Wheels, Tires and Vehicle Alignment (sedan) Audi A4 B8

WHEELS AND TIRES

This information can be found in Repair Manual General Information .

TIRE PRESSURE MONITORING SYSTEM, INDIRECT SYSTEM

Refer to the Owner's Manual.

If the vehicle has a tire pressure monitoring system display, it will be documented on the vehicle data label or in ELSA under "Vehicle Data" by the PR number TIRE PRESSURE MONITORING SYSTEM, DIRECT SYSTEM .

With the help of the ABS speed sensor, the tire pressure monitoring system compares both the rolling circumference and the vibration behavior of the individual wheels. The instrument cluster display shows if there are any changes to one or more wheels. If only one wheel is affected, the location of the wheel will be indicated.

The tire pressure monitoring system is a software module in the ESP/ABS control module for detecting slow losses of pressure at a wheel location. With the help of the ABS speed sensors, the TPMS compares the speed and rolling circumference of the individuals wheels. If the rolling circumference of a wheel changes, the tire pressure monitoring display indicator lamp lights up in the instrument cluster. Rolling circumference of tire may be change if

1. the tire pressure is too low.
2. the tire has structural damage.
3. the tire or the pressure was changed and the tire pressures were not saved.
4. the vehicle is loaded on one side.
5. the tires on one axle are loaded more heavily (for example when towing a trailer or driving up and down inclines).
6. snow chains are installed.
7. the spare tire is installed.
8. one tire per axle was changed (or if the tires were rotated from front to back or the other way around).
9. The left and right wheels drive on different surfaces for an extended period of time.

Tire Pressure Monitoring Display Appearing

The tire pressure monitoring display in the instrument cluster informs the driver if the tire pressure is too low or if there is a system malfunction.

System Fault in the TPMS Display (TPMS Display +)

If the indicator lamp blinks for approximately 1 minute after switching the ignition on and then stays on continuously, there is a system malfunction. "TPMS" is also displayed in the instrument cluster.

A system malfunction is stored in the Diagnostic Trouble Code (DTC) memory for the ABS/ESP control module and indicated by the yellow TPMS lamp in the instrument cluster. The TPMS lamp cannot be turned off by pressing the multimedia control head -E380- button. Proceed as follows if there is a fault stored in the DTC memory.

Connect the vehicle diagnostic tester and select "Guided Fault Finding".

Select the corresponding program in "Guided Functions".

Follow the prompts on the screen.

Perform Calibration: (readapt tire pressure)

The tire pressures must be saved in either the radio or MMI (depending on equipment) each time the pressure or a tire is changed.

Turn the ignition on, select the "CAR" function button and select the tire pressure monitoring system using the rotary switch on the multimedia control head -- knob and save the tire pressure by pressing the rotary knob.

TIRE PRESSURE MONITORING SYSTEM, DIRECT SYSTEM

Refer to the Owner's Manual.

If the vehicle has a tire pressure monitoring system display, it will be documented on the vehicle data label or in ELSA under "Vehicle Data" by the PR number Tire Pressure Monitoring System/Tire Pressure Monitoring System Display .

The tire pressure monitoring system monitors the pressure of the four tires while driving.

Damaged tire pressure sensors -- should be replaced for safety reasons.

Do not clean tire pressure sensors -- with steam blasting or strong compressed air.

For safety reasons, replace the tire pressure monitoring sensor -- and clean the rim after using tire sealant.

The tire pressure monitoring system consists of a control module, a central antenna integrated in the control module and one tire pressure sensor -- in each of the four wheels.

If the wheel positions on the vehicle are changed, tires are changed, tire pressure sensors -- are replaced or pressures are changed, control module must be readapted.

Note. When changing a tire with tire pressure monitoring sensors -- (summer/winter tires), check the tire pressure and adapt the sensor to the control module.

A Fault May be Saved in the Diagnostic Trouble Code (DTC) Memory if

There is a system malfunction.

When installing less than four wheels with tire pressure sensors --.

When installing tires or incorrect tire pressure sensors --. (If this is the case, the yellow warning lamp in the instrument cluster "system malfunction diagram" illuminates and cannot be deactivated by the system.)

The system has detected new sensors but the multimedia system control head -E380- button was not been pressed to confirm the current tire pressures. (In this case, the system malfunction is erased by pressing the button.)

WHEEL ALIGNMENT INFORMATION

Wheel alignment must only performed using VW/Audi-approved wheel alignment equipment.

Each time wheels are aligned, both front and rear wheels must be aligned.

Otherwise, proper vehicle driveability cannot be ensured.

Note. Axle alignment should not be performed until the vehicle has been driven 1, 000-2, 000 km, since it takes this long for the suspension to settle. The individual specifications should be followed as exactly as possible when making adjustments.

WHEN VEHICLE ALIGNMENT IS NECESSARY

1. Vehicle shows handling problems.
2. Involved in an accident.
3. Axle components were removed.
4. Tire wear patterns are uneven.

EXPLANATIONS OF THE PRODUCTION CONTROL NUMBERS (PR NUMBER)

The vehicle data plate documents which front/rear axle or tire pressure monitoring system is installed using the corresponding PR numbers.

There is a vehicle data label in the spare wheel well and also one in the customer Maintenance booklet.

Front/Rear Axle

Scheme 1

The front/rear axle PR No. is in illustration -A and B-.

The front axle PR number is item -A-.

Item -B- shows PR number for the rear axle

Suspension Versions

The suspension version PR No. is in illustration -arrow

In this example the vehicle has standard suspension 1BA installed.

1BA = Standard suspension

1BE = Sport suspension

1BD = Sport suspension S4

1BR = Heavy duty suspension

1BV = Sport suspension S line

1BL = Chassis with electronic damping

1BB = China City Suspension

1BP = Steel Spring Suspension allroad

Tire Pressure Monitoring System/Tire Pressure Monitoring System Display

The tire pressure monitoring system PR number can be found in ELSA under "Vehicle Data".

7K0 = without tire pressure monitoring system

7K6 = tire pressure monitoring system display

7K8 = tire pressure monitoring system, frequency 315 MHz Basis

Driver Assist System

The driver assist system PR number can be found in ELSA under "Vehicle Data".

7Y2 = lane assist

7Y3 = lane change assistance and lane assist

8T4 = Adaptive Cruise Control (ACC)

WHEEL ALIGNMENT MEASUREMENT PREPARATIONS

Special tools and workshop equipment required

1. Brake Pedal Actuator V.A.G 1869/2
2. Vehicle Diagnostic, Testing and Information System VAS 5051 B with corresponding diagnostic cable.
3. Steering Wheel Sales VAS 6458
4. Wheel alignment computer released by VW/Audi

The measurement sensor must be properly adjusted and attached to the vehicle; observe device manufacturer's operating instructions.

Make sure that the sliding plates and turn tables are not touching the end stop when checking the wheel alignment.

Drive the vehicle onto the alignment rack without tension. Move the vehicle back and forth if necessary to relieve any tension on the axle components.

The steering wheel must be "evened out" into the center position before beginning the measuring and adjusting. Use VAS 6458 for this.

VEHICLE ALIGNMENT OVERVIEW

Special tools and workshop equipment required

1. Steering Wheel Sales VAS 6458

Note. Vehicle must only be measured at curb weight. Refer to TEST PREREQUISITES ! Check which suspension is installed in the vehicle. This information can be found on the vehicle data plate. Refer to EXPLANATIONS OF THE PRODUCTION CONTROL NUMBERS (PR NUMBER) .

Observe the Following Work Sequence!

1 - Drive the vehicle onto the alignment rack without tension. Move the vehicle back and forth if necessary to relieve any tension on the axle components.

2 - The steering wheel must be "evened out" into the center position before beginning the measuring and adjusting. Use VAS 6458 for this.

3 - Steering rack, checking center position, refer to STEERING RACK, CHECKING MECHANICAL CENTER POSITION .

4 - Perform wheel run-out compensation, refer to WHEEL RUN-OUT COMPENSATION .

5 - Check the maximum steering angle, refer to MAXIMUM STEERING ANGLE, CHECKING .

6 - Check front axle camber and adjust if necessary, refer to FRONT AXLE CAMBER, CHECKING AND ADJUSTING

7 - Check rear axle camber and adjust if necessary, refer to REAR AXLE CAMBER, ADJUSTING .

8 - Check rear axle toe and adjust if necessary, refer to REAR AXLE TOE, ADJUSTING .

9 - Check the front axle toe angle and adjust if necessary, refer to FRONT AXLE TOE, ADJUSTING .

10 - If adjustments have been made on the front axle, calibrate the dynamic steering, refer to DYNAMIC STEERING BASIC SETTING

11 - If adjustments have been made on the suspension, perform a zero adjustment on the steering angle sensor -G85

12 - If adjustments have been made on the rear axle, calibrate the dynamic steering. Refer to DYNAMIC STEERING BASIC SETTING vehicle diagnosis, testing and information system VAS5051.

13 - If adjustments have been made on the rear axle, calibrate the adaptive cruise control. Refer to ADJUSTMENT PROCEDURE USING ACC Setting Device VAS 6190 , ADJUSTMENT PROCEDURE USING ACC Setting Device VAS 6430 and/or lane assist CALIBRATION PROCEDURE .

DYNAMIC STEERING

In conventional steering system, there is a direct mechanical connection between the steering wheel and the steering gear. That means there is a constant, specific relationship between the angle of the steering wheel and the angle of the wheels. In this version, only one ratio can be used in a vehicle. Selecting the appropriate ratio is a compromise because the different and somewhat contradictory requirements must be satisfied as best as possible.

The important requirements can only be fulfilled optimally by a variable ratio. Such a ratio changes the actual steering angle of the wheels depending on the vehicle speed and steering angle. Dynamic steering generally implements two variable ratios with comfortable and sporty characteristics.

The variable ratios are implemented by an additional electro-mechanical steering pinion actuator that superimposes the driver's steering movement. In emergencies such as an actuator malfunction, the steering functions exactly like conventional steering. The mechanical connection between the steering wheel and the front axle is not disconnected.

The advantages of dynamic steering are even more extensive. The system is also activated in conjunction with the ESP and its sensors under poor driving conditions. Through selective variation of the front wheel steering angle, the dynamic steering supports the ESP within dynamic driving limits.

The "actuator" located on the steering column is a fixed component of the column. If the "actuator" is faulty, the entire steering column must be replaced.

The "valve" located on the power steering pump is a fixed component of the pump. If the "valve" is faulty, the entire power steering pump must be replaced.

Correct basic setting is required for proper dynamic steering function.

Note. To make a basic setting successfully, the steering angle sensor -G85- must first be calibrated using the steering wheel balance VAS 6458.

A Basic Setting is Necessary If

1. the active steering control module -J792- is replaced.
2. the front axle toe is adjusted.
3. the rear axle toe is adjusted.
4. the vehicle suspension was changed, for example, changing from standard to sport suspension.
5. the steering angle sensor -- was calibrated.
6. the steering column was replaced.
7. the steering wheel is at an angle when driving straight.

Note. Before performing a basic setting on the dynamic steering, check the Diagnostic Trouble Code (DTC) memory and correct any faults. A basic setting to the dynamic steering must only be performed using alignment equipment approved by VW/Audi.

ADAPTIVE CRUISE CONTROL

Distance regulation sensor and distance regulation control module -J428- are installed in one housing. If sensor/control module is faulty, entire unit must be replaced.

In the following description, the sensor/control module unit is identified as the "sensor".

The sensor is located behind the front bumper right air intake grille.

Malfunctions can occur due to contamination on the sensor. Remove the air intake grille in front of the sensor according to the repair information and clean the sensor.

A new sensor generation with a revised bracket is being installed in production as a running change from MY 12; allocation.

Before performing Adaptive Cruise Control (ACC) adjustment, Diagnostic Trouble Code (DTC) memory must be interrogated and malfunctions corrected.

ACC control module "measured value block 2" shows whether sensor is only slightly misaligned.

The ACC adjustment may only be set using a VW/Audi-approved wheel alignment tester and adjustment device!

A correct adjustment is required for perfect ACC function.

Note. A new adjustment is necessary if: Rear axle toe is adjusted. The complete adaptive cruise control sensor -G550- must be replaced. Alignment work performed on the right longitudinal member. There is damage on the front end. The adjustment angle is greater than -0.8° to +0.8°.

LANE ASSIST

Lane assist helps the driver keep the vehicle in its lane. If the system is in operation and the vehicle approaches a recognized boundary line and will leave the lane, the driver is notified by a vibration in the steering wheel. If the system is in operation and the turn signal is activated before driving over a recognized boundary, the warning is not given because the system assumes it is an intentional lane change.

The steering wheel is equipped with a vibration motor to create the steering wheel vibration. The vibration motor is encased in foam in the lower right spoke of the steering wheel. The steering wheel vibrations are generated by a rotating weight installed on the motor. It cannot be replaced separately. The entire steering wheel motor must be replaced if the vibration motor is faulty. Refer to AIRBAG STEERING WHEEL . The duration of the steering wheel vibration depends on the driver reaction and generally lasts about one second.

The camera -- and directional stabilization assistance control module -J759- are installed in one housing. The entire unit must be replaced if the camera or control module is faulty.

The directional stabilization assistance control module is installed at the center of the top edge of the windshield at the level of the interior rearview mirror. It is secured in a bracket that is bonded to the windshield.

Changes that restrict the visual area of the camera (such as applying labels, stone damage) can lead to malfunctions.

The button -- for the directional stabilization assistance button -E517- is integrated in a mount with the turn signal lever. Pressing the button switches the system on and off. If the directional stabilization assistance button -- is faulty, the mount must be completely replaced with the cruise control switch -E45- and the windshield wiper intermittent mode switch -E22-. Refer to Removal and Installation .

Note. The message "Audi lane assist not available: no sensor range at this time" appears if the camera function is no longer available due to ongoing poor visibility of the lane lines. The following could cause this

1. The camera visual field is dirty or icy. If that is the problem, it should be corrected.
2. There is condensation on the camera visual field. If this is the case, wait until the condensation disappears.
3. Lane lines are not visible for an extended period of time due to road conditions (such as snow on the road surface).

If the condensation does not clear on its own or if there is heavy dirt on the inside of the lens (in the camera visual field), the camera visual field must be cleaned by hand. To do this, remove the control module and the lens screen and clean the front window using cleaning solution. Control module and lens screen, removing, refer to Directional Stabilization Assistance Control Module -J759- AND LENS SCREEN .

The calibration must be correct for proper lane assist function.

Calibration is Necessary If

1. "No or incorrect basic setting/adaptation" is stored actively in the Diagnostic Trouble Code (DTC) memory.
2. the directional stabilization assistance control module -- is replaced.
3. The windshield is replaced or removed.
4. the rear axle toe is adjusted.
5. the vehicle suspension was changed, for example, changing from standard to sport suspension.
6. The vehicle level sensor on vehicles with electronic damping was adapted

Note. Before calibrating the lane assist, check the DTC memory and correct any faults. To calibrate the lane assist, the vehicle driving direction must be specified and serves as the reference position for the tool VAS 6430. The lane assist must only be calibrated using alignment equipment approved by VW/Audi. Only use the VAS 6430 to calibrate the lane assist.

Scheme 2

1. Multimedia Control Head -E380- Component location: the multimedia control head -- is installed in the center console. The "Tire Pressure Monitoring" function is selected by pressing the "CAR" function button and using the knob in the "Systems" car menu.
2. Display in Instrument Cluster See Vehicle diagnostic, test and information system VAS 5051 B
3. Left Front Tire Pressure Monitoring Sensor -G222-, Right Front Tire Pressure Monitoring Sensor -G223-, Left Rear Tire Pressure Monitoring Sensor -G224- and Right Rear Tire Pressure Monitoring Sensor -G225- Removing and installing, refer to «Tire Pressure Sensor»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__tire-pressure-sensor) If wheel positions on the vehicle are changed, tires are changed, tire pressure sensors -- are replaced or pressures are changed, control module must be readapted. Refer to «TIRE PRESSURE MONITORING SYSTEM, USING THE SYSTEM»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__tire-pressure-monitoring-system-using-the) .
4. Tire Pressure Monitoring Control Module -J502- If tire pressure monitoring control module -- is replaced, system must be coded, refer to «TIRE PRESSURE MONITORING SYSTEM, USING THE SYSTEM»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__tire-pressure-monitoring-system-using-the) . Removing and installing, refer to «Tire Pressure Monitoring Control Module -J502»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__tire-pressure-monitoring-control-module-j502)

TIRE PRESSURE MONITORING SYSTEM, USING THE SYSTEM

Function

The tire pressure monitoring system is controlled using the multimedia system control head -E380-, which is installed in the center console.

The system monitors the tire pressure that was set for monitoring in each of the four tires.

The tire pressures must be checked, corrected and saved via the multimedia system control head -- under the menu items "CAR", "Systems" and "Tire Pressure Monitoring".

Then check and correct the tire pressure for the tires on the vehicle (including spare tire) according to the specifications on the sticker on the fuel filler flap/B-pillar.

Tire Pressure Monitoring Active

If the tire pressure monitoring system detects a loss of pressure in one or more tires, this is indicated to the driver by the tire pressure warning light illuminating in the instrument cluster. A tire pressure warning symbol with the text "Check tire pressure" also appears in the instrument cluster driver information system. In this case, the tire pressures must be checked (according to the specifications on the label on the fuel tank door/B-pillar). If the tire pressure is very different in one or more tires, check that tire for damage or foreign objects. Replace the tire if necessary, refer to TIRES, CHANGING .

If the cause of the tire pressure warning has been corrected: Correct and save the tire pressures via the multimedia system control head --.

Fault in the TPMS

A system malfunction is stored in the tire pressure monitoring control module -J502- Diagnostic Trouble Code (DTC) memory. If a malfunction occurs or there is already one present, this is indicated when the ignition is switched on by the yellow malfunction lamp in the instrument cluster blinking for 1 minute and then staying on. The yellow warning lamp cannot be switched off by pressing the multimedia system control head -- button in the center console. Except in the case that 1 - 4 tire pressure monitoring sensors -- recognized, the pressures were not stored. Moreover, the "TPMS" warning lamp in the instrument cluster comes on and "Tire Pressure System Fault". If there is a fault stored in the DTC memory, connect the vehicle diagnostic tester and select "Guided Fault Finding".

Recode the Tire Pressure Monitoring Control Module --.

The tire pressure monitoring control module -- must be coded if it is replaced. To do this, proceed as follows.

Connect vehicle diagnostic tester perform vehicle-specific entry into Guided Fault Finding and select go to button "function/component selection".

Select the corresponding program in "Guided Functions".

Follow the prompts on the screen.

Tire Pressures, Saving

The correct saving of the specified values in the basic requirement for dependable tire pressure monitoring.

Each time a tire or tire pressure monitoring system -- is replaced, press the multimedia system control head -- button in the center console when in the tire pressure monitoring menu when the ignition is switched on and the vehicle is standing.

The procedure for saving the tire pressures must be initiated each time the tire specified pressures are changed. The procedure takes place while driving.

Changing a Tire or Replacing Just One Tire Pressure Sensor --, Change.

Adapting the tire pressure sensors -- is a basic requirement for the tire pressure monitoring system to function properly.

Each time a tire or tire pressure monitoring system -- is replaced, press the multimedia system control head -- button in the center console when in the tire pressure monitoring menu when the ignition is turned on and the vehicle is standing.

The vehicle must stand for 20 minutes and then be driven on a 10 minute adaptation drive at speeds higher than 25 km/h.

If the multimedia system control head -- button is not pressed, the system adapts the new sensors but still illuminates the warning lamp to request actively the confirmation the actual tire pressures.

The system detects a malfunction if the control module is not ready for adapting because the 20 minute waiting period was not completed. The system only adapts the tire pressure monitoring sensors automatically after a 20 minute waiting period. If the control module is ready, "YES/NO" can be read in measured values block 126.

Scheme 3

1. Left Front Tire Pressure Monitoring Sensor -G222-, Right Front Tire Pressure Monitoring Sensor -G223-, Left Rear Tire Pressure Monitoring Sensor -G224- and Right Rear Tire Pressure Monitoring Sensor -G225- Replace the valve insert each time a tire is changed. When using used tire pressure sensors --, replace the union nut, valve insert, seal, sealing washer and valve cap. After installing, visually check if the sensor is secure in its bed. Replace damaged sensors. Do not clean the sensors with steam blasting or strong compressed air. Removing and installing, refer to «Tire Pressure Sensor»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__tire-pressure-sensor)
2. Valve Core Replace damaged valves. When changing a tire, replace the valve insert.
3. Sealing Washer When installing the new sealing washer, counter hold it to prevent the valve body from pushing through. If the connection breaks, then replace the tire pressure monitoring sensor --.
4. Seal When installing the new seal, counter hold it to prevent the valve body from pushing through. If the connection breaks, then replace the tire pressure monitoring sensor --.
5. Rim Tires, removing and mounting, refer to «TIRES, CHANGING»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__tires-changing)
6. Union Nut 8 Nm
7. Valve Cap Use only original valve caps from the repair set. Do not use comfort valve caps and metal caps

Scheme 4

1. Power Steering Pump With an electric control valve The control valve is only installed on vehicles with 6- and 8-cylinder engines. The power steering pump and control valve are one component and are replaced together. Installation location in vehicles with 4 and 6-cylinder engines: on the left front of the engine (belt drive). Installation location on vehicles with 8-cylinder engines: on the rear left of the engine (chain drive).
2. Actuator Must not be loosened or removed from the steering column. The actuator and steering column are one component and are replaced together. The system must be calibrated if the actuator is replaced. Refer to «DYNAMIC STEERING BASIC SETTING»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__dynamic-steering-basic-setting) . Removing and installing, refer to «STEERING COLUMN»(/audi/a4/b8-2007-2012/remont/manual-power-steering/#steering-sedan__steering-column)
3. Active Steering Control Module -J792- The basic setting must be made if the active steering control module is replaced --. Refer to «DYNAMIC STEERING BASIC SETTING»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__dynamic-steering-basic-setting) . Removing and installing, refer to «Active Steering Control Module -J792»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__active-steering-control-module-j792)

Scheme 5

1. Cover
2. Clip Installed from MY 12 Always replace the clip if the stud bolt -3- was removed. Removing and installing, refer to «Distance Regulation Control Module -- CLIP, REPLACING, FROM MY 12»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__distance-regulation-control-module-clip)
3. Stud If the stud bolt is being removed, then the clip -2- must always be replaced. Observe adjustment dimension when installing (Scheme 53)
4. Bracket For vehicles through MY 12
5. Nut
6. Bolt 8 Nm
7. Bolt 8 Nm
8. Angle Bracket Installed on vehicles from MY 12
9. Spring Nut
10. Bracket For vehicles from MY 12 If a repair is required, the bracket is replaced by bracket -4-. Allocation.
11. Adaptive Cruise Control Sensor -- There are different versions; allocation. Removing and installing, refer to «Adaptive Cruise Control Sensor -G550»(/audi/a4/b8-2007-2012/remont/wheel-tire-system/#wheels-tires-and-vehicle-alignment-sedan__adaptive-cruise-control-sensor-g550)
12. Connector Squeeze both clips to release the connector.

WHEEL ALIGNMENT SPECIFIED VALUES

Front and All Wheel Drive

Specifications valid for all engine versions

Calculating the camber adjustment value

camber adjustment value = -43' + [(vehicle height left + vehicle height right) : 2] - 391

Note. 1' camber = 1 mm vehicle height

The camber values are defined in the following table based on the vehicle heights at the front axle.

Additional vehicle data for vehicles with front and all wheel drive

This additional vehicle data only serves for a faster diagnosis in the case of accidents.

Table SPECIFICATIONS

Specified values valid for all engine versions.

TEST PREREQUISITES

1. Check suspension, steering and steering linkage for excessive play and damage, repair if necessary.
2. Tread depth difference may be no more than 2 mm on an axle.
3. Tires inflated to prescribed pressure.
4. Drive the vehicle onto the alignment rack without tension. Move the vehicle back and forth if necessary to relieve any tension on the axle components.
5. Vehicle accurately aligned, suspension bounced and rocked several times
6. Make sure that the sliding plates and turn tables are not touching the end stop when checking the wheel alignment.
7. The steering wheel must be "evened out" into the center position before beginning the measuring and adjusting. Use steering wheel scales VAS 6458 for this.
8. The measurement sensor must be properly adjusted and attached to the vehicle; observe device manufacturer's operating instructions.
9. Make sure that the sliding plates and turn tables are not touching the end stop when checking the wheel alignment.
10. Vehicle curb weight "Curb weight means: the weight of a vehicle ready to be driven (the fuel tank is full, the windshield washer fluid reservoir is full, spare wheel, vehicles tool and vehicle jack and no people in the vehicle)"
11. Spare wheel, vehicle tools and vehicle jack must be located in the position specified by the vehicle manufacturer.
12. Perform wheel run-out compensation: Permissible axial run-out of the wheel rims can exceed the specified toe setting tolerance. If compensation for wheel run-out is not performed, it will not be possible to obtain a correct toe-in adjustment.
13. After a certain period, wheel alignment platforms and computer equipment can lose their original leveling setting and adjustments.
14. Alignment platforms and alignment units/alignment computers should be calibrated at least once a year during maintenance.
15. Treat these highly sensitive units carefully and conscientiously.
16. If necessary, contact the manufacturer for familiarization with the proper use of the equipment.

FASTENER TIGHTENING SPECIFICATIONS

STEERING RACK, CHECKING MECHANICAL CENTER POSITION

The general mechanical center position of the rack can be checked with the appropriate markings on the power steering gear. Refer to HYDRAULIC POWER STEERING GEAR STEERING, CENTERING .

WHEEL RUN-OUT COMPENSATION

The lateral run-out of the wheel must be compensated for. Otherwise, measurement will result in false readings.

Permissible axial run-out of the wheel rims can exceed the specified toe setting tolerance. If compensation for wheel run-out is not performed, it will not be possible to obtain a correct toe-in adjustment.

A correct toe-in adjustment will not be possible without performing lateral run-out compensation!

For this, observe notes by manufacturer of wheel alignment equipment.

MAXIMUM STEERING ANGLE, CHECKING

If the maximum steering angle has been determined on the alignment equipment, so that the value is not within the tolerance, then check for damage or deformations to the steering and suspension components and inspect the symmetry of the ties rod. In this case, shorten the "longer" tie rod end (install it deeper into the tie rod) and replace any damaged components.

If a steering wheel fault is determined on the alignment equipment when setting the center position of the steering, then check the steering and suspension for damage or deformations and replace any damaged components. Check the tie rod symmetry as well.

Measure dimension -a- on the "shorter" tie rod head. Shorten the "longer" tie rod head to the same dimension. To do this, install the tie rod head -1- deeper into the tie rod -2-.

Scheme 6

Dimension -a- right tie rod end = dimension -a- left tie rod end; maximum permissible difference between right and left < 2.5 mm.

When the steering wheel returns to its center position, let the steering wheel "come to its center" using even movements.

FRONT AXLE CAMBER, CHECKING AND ADJUSTING

Camber cannot be adjusted.

Camber can be centered evenly within specified tolerance range by shifting subframe.

Remove noise insulation. Refer to Description and Operation .

Note. The tunnel crossmember must be loosened before adjusting the camber. Refer to [For engine(s) CCBA] Removal and Installation or to [For engine(s) CAEB, CALA] Removal and Installation or [For engine(s) CCBA] Removal and Installation or to Removal and Installation . The tunnel crossmember must be loosened to prevent the transmission mount from being stressed.

Depending on the engine version, the subframe shield must be loosened in order to be able to mount the plastic coated tire iron for moving the subframe.

Remove the bolts -arrows-.

Scheme 7

Move the subframe shield -1- to the side.

Loosen the bolts -1- through -8-.

Depending on the engine version, the following steps are necessary to loosen the bolt -1-.

1. Remove the right protective joint boot, if applicable.
2. Remove one wheel housing liner clip.
3. Tilt the wheel housing liner to the side slightly.

Scheme 8

Note. If the subframe is moved, the front of the vehicle must be lifted at the jack points using an axle lift.

Using a plastic-coated tire iron, slide the subframe with the engine mount and stabilizer bar in the appropriate location.

Push in the center of the subframe near the lower control arm between the subframe and the body longitudinal member.

Scheme 9

If you do not have a plastic-coated tire iron, wrap a standard tire iron in adhesive tape.

The vehicle must be bounced several times at the front axle before checking the camber values.

Axle alignment specified values, refer to WHEEL ALIGNMENT SPECIFIED VALUES .

Tighten the bolts -2 and 3- to the specifications.

Install the new bolts -1 and 4- one after another and tighten. Refer to SUBFRAME, CROSSBRACE, STABILIZER BAR, COUPLING ROD AND SUBFRAME SHIELD OVERVIEW .

Install the new bolts -2- and -3- one after another and tighten. Refer to SUBFRAME, CROSSBRACE, STABILIZER BAR, COUPLING ROD AND SUBFRAME SHIELD OVERVIEW .

Install the new bolts -8 and 5- one after another and tighten. Refer to SUBFRAME, CROSSBRACE, STABILIZER BAR, COUPLING ROD AND SUBFRAME SHIELD OVERVIEW .

Install the new bolts -7 and 6- one after another and tighten. Refer to SUBFRAME, CROSSBRACE, STABILIZER BAR, COUPLING ROD AND SUBFRAME SHIELD OVERVIEW .

Tighten the tunnel crossmember, the tunnel crossmember must be loosened before adjusting the camber. Refer to [For engine(s) CCBA] Removal and Installation or to [For engine(s) CAEB, CALA] Removal and Installation or [For engine(s) CCBA] Removal and Installation or to Removal and Installation .

Check camber value once more. Refer to WHEEL ALIGNMENT SPECIFIED VALUES .

Install the right protective joint boot and the wheel housing fastener, if removed.

Install the subframe shield, if it was removed. Tightening specifications, refer to SUBFRAME, CROSSBRACE, STABILIZER BAR, COUPLING ROD AND SUBFRAME SHIELD OVERVIEW .

Install noise insulation. Refer to Description and Operation .

REAR AXLE CAMBER, ADJUSTING

Remove the nut -A- of threaded connection of the wheel bearing housing/control arm, and bolt on new nut until stop.

Scheme 10

Adjust the camber by rotating the adjusting bolt -B-. To turn the adjusting bolt -B-, turn the hex head at the >>top of the bolt<<.

Axle alignment specified values, refer to WHEEL ALIGNMENT SPECIFIED VALUES .

Note. The maximum adjustment range is 135° to left or right of center position. Do not rotate the adjusting bolt -B- further once the end position has been reached or the components will be damaged. For a better illustration, camber adjustment is shown with wheel removed.

Tighten nut -A- -item 9- UPPER TRANSVERSE LINK, TIE ROD, COIL SPRING, LOWER CONTROL ARM AND LEVEL CONTROL SYSTEM SENSOR OVERVIEW .

After tightening nut -A-, check camber value once more. Refer to WHEEL ALIGNMENT SPECIFIED VALUES .

REAR AXLE TOE, ADJUSTING

Special tools and workshop equipment required

1. Tool Insert T40183
2. No illustration, commercially available pawl with fine gear

Remove the nut -A- of threaded connection tie rod/subframe, and screw on new nut until stop.

Scheme 11

Adjust toe by turning eccentric bolt -B-.

Axle alignment specified values, refer to WHEEL ALIGNMENT SPECIFIED VALUES .

Tighten the nut -A- using the T40183 -item 25- UPPER TRANSVERSE LINK, TIE ROD, COIL SPRING, LOWER CONTROL ARM AND LEVEL CONTROL SYSTEM SENSOR OVERVIEW .

After tightening nut -A-, check toe value once more. Refer to WHEEL ALIGNMENT SPECIFIED VALUES .

Note. The maximum adjustment range is 90° to left or right of center position. The geometric drive axle is automatically changed when individual toe settings are changed.

FRONT AXLE TOE, ADJUSTING

Measure the dimension -a- between the tie rod head -1- and the left and right tie rod -2- and make a note of the value. Dimension -a- should be the same before and after adjusting on the left and right.

Loosen lock nut -B-.

Scheme 12

Note. Counter hold the tie rod end -C- when loosening the lock nut -B-.

Adjust toe on the left and right hand wheels at hex -A-.

Be sure that boot is not twisted after turning tie rods.

Twisted boots wear out quickly.

Tighten lock nut -B-, refer to HYDRAULIC POWER STEERING GEAR, SERVICING and check toe-in value again.

After tightening lock nut -B- it is possible that the value deviates slightly.

If the measured toe nevertheless lies within the tolerance, the adjustment is correct.

DYNAMIC STEERING BASIC SETTING

Special tools and workshop equipment required

1. Vehicle Diagnostic, Testing and Information System VAS 5051 B with corresponding diagnostic cable.
2. Steering Wheel Sales VAS 6458
3. Wheel alignment computer

There are two choices for performing a basic setting on the dynamic steering

The "Quick Access"

This procedure should be selected for the following activities if

1. the active steering control module -J792- was replaced
2. the steering angle sensor -G85- was calibrated
3. the steering column was replaced
4. the steering wheel is at an angle when driving straight.

The "Complete Alignment"

This procedure should be selected for the following activities if

1. the suspension was adjusted during an axle alignment
2. the front axle toe was adjusted
3. the rear axle toe was adjusted
4. the vehicle suspension was changed, for example, changing from standard to sport suspension.

Note. Both procedures are programmed into the axle alignment computer. The respective procedure is performed automatically. It is only necessary to select the appropriate program for the procedure that will be performed.

Note. A basic setting to the steering angle sensor -- must be made using the VAS 6458 before beginning the calibration. Before beginning the basic setting, check the Diagnostic Trouble Code (DTC) memory and correct any malfunctions present.

Connect the battery charger. Refer to General Information .

Connect the VAS 5051 B to the vehicle.

Select the basic setting procedure for dynamic steering in the alignment computer.

Install the quick clamps on all four wheels.

Install the measurement sensors on the front and rear wheels.

Perform wheel run-out compensation. Refer to WHEEL RUN-OUT COMPENSATION .

Position the wheels so they are straight according to the alignment computer.

Note. Disregard the steering wheel position when doing this. Only the display on the alignment computer is valid.

Subsequent procedures are performed via the vehicle diagnosis, testing and information system.

Turn on ignition.

Touch Guided Fault Finding .

Select in succession

1. Brand
2. Type
3. Model year
4. Version
5. Engine Code

Confirm data entered.

Wait until the VAS 5051 B has checked all available control modules in vehicle.

Press the go to button and select "function/component selection".

Select the corresponding program in "Guided Functions".

Now follow the instructions on the screen to perform the basic setting.

ACC SETTING DEVICE VAS 6190, CONVERTING FOR ADJUSTMENT PROCEDURE

Special tools and workshop equipment required

1. ACC Adjustment Device VAS 6190

Before performing adjustment, check in which mounts have the vertical slits on the VAS 6190 are located. VAS 6190 may have to be adapted before performing adjustment.

The VAS 6190 must be adapted before adjustment procedure. If this is done during the adjustment procedure, the pre-calibration on the VAS 6190 must be repeated.

For the adjustment procedure, the vertical slits in mounts -1- through -4- must be inserted so that laser beam is approximately centered vertically when it contacts the sensor lens.

Scheme 13

The original nut at the top of the horizontal slits must be replaced with a standard nut -3-.

Scheme 14

Note. The original nut at the top of the horizontal slits must be replaced with a standard nut so that the mirror can be slide far enough to the center.

The mirror at the center -1- must be removed and installed again all the way to the left -arrow- near the vertical slits -2-.

Scheme 15

Then the mirror -1- must be slide on horizontal slits as far as stop on vertical slits -2-.

ADJUSTMENT PROCEDURE USING ACC SETTING DEVICE VAS 6190

Special tools and workshop equipment required

1. Vehicle Diagnosis, Testing and Information System VAS 5051 A
2. Diagnostic Cable VAS 5051/5A
3. ACC Adjustment Device VAS 6190
4. Adjuster for ACC VAS 6190/2
5. Wheel alignment computer
6. ADC Test Fixture VAS 6041
7. ADC Reflector Mirror VAS 6041/1

Note. The VAS 6190 may have to be adapted for the adjustment procedure. Refer to ACC Setting Device VAS 6190, CONVERTING FOR ADJUSTMENT PROCEDURE . Before driving the vehicle onto the alignment stand, check whether there is a sufficiently large space between the vehicle and the VAS 6190. The distance between the VAS 6190 and the vehicle must be 120 cm +/- 5 cm. If there is not sufficient space, drive vehicle backward on the alignment stand in order to be able to use the corresponding space.

1. Before beginning the adjustment, check the Diagnostic Trouble Code (DTC) memory and correct any malfunctions present.

The adjustment procedure is described here with the VAS 6190. However the VAS 6041 and VAS 6041/1 can also be used.

Note. If there was a previous axle alignment, the steps under "Calibration procedure without a previous axle alignment" should not performed.

Calibration procedure without a previous axle alignment.

Connect battery charger. Refer to General Information .

Select the ACC calibration button on the alignment computer.

Install quick clamps on the rear wheels.

Install measuring sensors on the rear wheels.

Perform a rim run-out compensation on the rear wheels.

Note. The VAS 6190 must not be moved on the calibration beam.

Calibration procedure with or without a previous axle alignment

Remove the right front air intake grille. Refer to "Front Bumper" in Removal and Installation .

Remove all dirt on the sensor lens.

Position VAS 6190 at a distance -A- of 120 cm +/- 5 cm from sensor lens to mirror surface.

Scheme 16

Load the VAS 6190 with the weight -arrow- as shown in the illustration.

Scheme 17

Install the front wheel measuring sensors -1- on the VAS 6190.

Scheme 18

In area -A-, bring item -2- on rotary knob into alignment with marking on mirror (number 2 on rotary knob must face toward vehicle).

Now align by sliding it sideways -arrows B- VAS 6190 so that the laser beam is horizontally centered on the senor lens.

Bring bubble levels -2- on VAS 6190 into balance using adjustment screws -1-.

Scheme 19

Adjust vertical slits -4- on VAS 6190 so that laser beam is vertically centered on sensor lens.

Adjust the same front axle individual toe settings using fine adjustment screw -3-.

The difference between individual toe values must be less than 6' or they must be the same.

Bring bubbles -2- on measurement sensor -1- into balance.

Now using laser beam -3- on VAS 6190, check whether laser beam contacts sensor lens.

Note. If the laser beam still meets the sensor lens at this step after adjusting the same individual toe values, the VAS 6190 is aligned correctly (positioned). If the laser beam does not meet the sensor lens, VAS 6190 alignment must be performed again.

Connect VAS 5051 B.

Connect VAS 5051/5A to Data Link Connector (DLC).

Scheme 20

Turn VAS 5051 A on.

VAS 5051 A is ready to operate when it displays operating modes in button fields.

Turn on ignition.

Touch Guided Fault Finding .

Select in succession

1. Brand
2. Type
3. Model year
4. Version
5. Engine Code

Confirm data entered.

Wait until the VAS 5051 A has checked all available control modules in vehicle.

Press the go to button and select "function/component selection".

Select the corresponding program in "Guided Functions".

Now follow instructions on screen to perform adjustment.

Turn the VAS 6190/2 in direction of -arrow A or B- and use the upper screw -2- and the lower screw -1- for precision adjustment in "Guided Fault Finding".

Scheme 21

Turn ignition off.

Disconnect VAS 5051/5A connector from DLC.

Disconnect the battery charger. Refer to General Information .

Install the air intake grille. Refer to "Front Bumper" in Removal and Installation .

ADJUSTMENT PROCEDURE USING ACC SETTING DEVICE VAS 6430

Special tools and workshop equipment required

1. Vehicle Diagnostic, Testing and Information System VAS 5051 B with corresponding diagnostic cable.
2. ACC Adjustment Device VAS 6430
3. Wheel Alignment Computer
4. Adjuster for ACC VAS 6190/2

Note. Before driving the vehicle onto the alignment stand, check whether there is a sufficiently large space between the vehicle and the VAS 6430. The distance between the VAS 6430 and the vehicle must be 120 cm +/- 5 cm. If there is not sufficient space, drive vehicle backward on alignment stand in order to be able to use the corresponding space. Before performing the calibration procedure, check the position of the calibration mirror. The calibration mirror may need to be adapted before performing the calibration. The VAS 6430 must be adapted before adjustment procedure. If this is done during the adjustment procedure, the pre-calibration on the VAS 6430 must be repeated.

1. Before beginning the adjustment, check the Diagnostic Trouble Code (DTC) memory and correct any malfunctions present.

The adjustment procedure is described here with the VAS 6430.

Note. If there was a previous axle alignment, the steps under "Calibration procedure without a previous axle alignment" should not performed.

Calibration procedure without a previous axle alignment

Connect the battery charger. Refer to General Information .

Select the ACC calibration button on the alignment computer.

Install quick clamps on the rear wheels.

Install measuring sensors on the rear wheels.

Perform a rim run-out compensation on the rear wheels.

Note. The VAS 6430 must not be moved on the calibration beam.

Calibration procedure with or without a previous axle alignment.

Remove the right front air intake grille. Refer to "Front Bumper" in Removal and Installation .

Remove all dirt on the sensor lens.

If necessary, remove the mirror installed at the center and install it all the way at the right near the vertical slits.

Scheme 22

Position VAS 6430 at a distance -A- of 120 cm +/- 5 cm from sensor lens to mirror surface.

Scheme 23

Install the front wheel measuring sensors -1- on the VAS 6430.

In area -A-, bring item -2- on rotary knob into alignment with marking on mirror (number 2 on rotary knob must face toward vehicle).

Scheme 24

Now align by sliding it sideways -arrows B- VAS 6430 so that the laser beam is horizontally centered on the senor lens.

Level the bubble levels -A and B- on the VAS 6430 using the adjusting screws -1, 2 and 3-.

Scheme 25

Adjust the mirror -4- using the crank -arrow- on the VAS 6430 so the laser beam is vertically centered on the sensor lens.

Adjust the same front axle individual toe settings using fine adjustment screw -5-.

The difference between individual toe values must be less than 6' or they must be the same.

Bring bubbles -2- on measurement sensor -1- into balance.

Now using the laser beam -3- on the VAS 6430, check if the laser beam contacts sensor lens.

Note. If the laser beam still meets the sensor lens at this step after adjusting the same individual toe values, the VAS 6430 is aligned correctly (positioned). If the laser beam does not meet the sensor lens, VAS 6430 alignment must be performed again.

Connect the VAS 5051 B.

Connect VAS 5051/5A to Data Link Connector (DLC).

Turn VAS 5051 B on.

VAS 5051 B is ready to operate when it displays operating modes in button fields.

Turn on ignition.

Touch Guided Fault Finding .

Select in succession

1. Brand
2. Type
3. Model year
4. Version
5. Engine Code

Confirm data entered.

Wait until the VAS 5051 B has checked all available control modules in vehicle.

Press the go to button and select "function/component selection".

Select the corresponding program in "Guided Functions".

Now follow instructions on screen to perform adjustment.

Turn the VAS 6190/2 in direction of -arrow A or B- and use the upper screw -2- and the lower screw -1- for precision adjustment in "Guided Fault Finding".

Turn ignition off.

Disconnect VAS 5051/5A connector from DLC.

Disconnect the battery charger. Refer to General Information .

Install the air intake grille. Refer to "Front Bumper" in Removal and Installation .

CALIBRATION PROCEDURE

Special tools and workshop equipment required

1. Vehicle Diagnostic, Testing and Information System VAS 5051 B with corresponding diagnostic cable.
2. ACC Adjustment Device VAS 6430
3. Wheel Alignment Computer

Note. Check if the directional stabilization assistance control module -J759- is seated in the bracket correctly. Perform a visual inspection to see if the camera visual area is free. Check the Diagnostic Trouble Code (DTC) memory and correct any malfunctions before beginning the calibration. Before driving the vehicle onto the alignment stand, check if there is enough space between the center of the wheel hub on the front wheels and the VAS 6430. The distance between the VAS 6430 and the center of the wheel hub on the front wheels must be 150 cm +/- 2.5 cm. If there is not sufficient space, drive the vehicle backward on the alignment stand in order to be able to use the corresponding space. Check the position of the calibration board on the calibration beam and align it with the center of the board if necessary.

Follow the prerequisites for alignment. Refer to TEST PREREQUISITES .

Connect battery charger. Refer to General Information .

Connect the VAS 5051 B to the vehicle. (Guide the diagnostic cable through the door window.)

Note. During the calibration procedure, make sure all the vehicle doors remain closed and the vehicle exterior lighting is turned off.

Position the front wheels so they are straight.

Select the lane assist calibration procedure in the alignment computer.

Install the quick clamps on all four wheels.

Install measuring sensors on the rear wheels.

Perform a rim run-out compensation on the rear wheels.

Note. The VAS 6430 must not be moved on the calibration beam.

Position the VAS 6430 at a distance of -A- 150 cm +/- 2.5 cm from the center of the wheel hub on the front wheels to the beam on the VAS 6430 as shown in the illustration.

Scheme 26

Install the front wheel measuring sensors -1- on the VAS 6430.

Scheme 27

Note. The alignment stand must be in the lowest level position for the next step.

Enter the height value -A- between the VAS 6430 contact patch and the wheel contact surface as shown in the illustration and enter it in the alignment computer.

Scheme 28

Check the position of the calibration board on the calibration beam and align it with the center of the board if necessary.

Scheme 29

a = a

Loosen the bolt -arrow- and place the measuring bar -1- on the floor.

Scheme 30

Adjust the calibration panel to the specified height -2- according to the alignment computer using the crank -1-.

Scheme 31

If the specified height was reached -2-, then the measuring bar must be pushed slightly forward and secured with the locking bolt.

Note. If in later procedure the height of the calibration board must be corrected, make sure the measuring bar is touching the ground when this is being done.

Level the bubble level -A- using the adjusting screw -1-.

Scheme 32

The bubble adjustment -A- serves to compare the ground conditions.

Move the VAS 6430 sideways -arrow B- until the display on the alignment computer is within the tolerance range.

Scheme 33

Secure the VAS 6430 by tightening the bolts -2- and -3- slightly. (This prevents the VAS 6430 from rolling away.)

Scheme 34

Turn the precision adjustment screw -1- until the display on the alignment computer is located within the tolerance range.

Scheme 35

Level the bubble level -A- using the adjusting screw -1-.

Level the bubble level -B- using the adjusting screw -2-.

Subsequent procedures are performed using the VAS 5051 B.

Turn on ignition.

Touch Guided Fault Finding .

Select in succession

1. Brand
2. Type
3. Model year
4. Version
5. Engine Code

Confirm data entered.

Wait until the VAS 5051 B has checked all available control modules in vehicle.

Press the go to button and select "function/component selection".

Select the corresponding program in "Guided Functions".

Now follow the instructions on the screen to perform the calibration.

Note. A step is performed in guided fault finding next to determine the body height.

Determine the body height -a- at all four wheels in the center of the wheel between the wheel contact surface and the lower edge of the fender.

Scheme 36

TIRE PRESSURE MONITORING CONTROL MODULE -J502

Special tools and workshop equipment required

1. Torque Wrench V.A.G 1783

Removing

The tire pressure monitoring control module -- is located in the right front footwell under the instrument panel.

Before removing the tire pressure monitoring control module --, perform Guided Fault Finding under "replace control module".

Remove the glove compartment. Refer to Removal and Installation .

Remove the sill panel strip. Refer to Removal and Installation .

Remove the locking mechanisms -A arrows- and the cover -arrow B-.

Scheme 37

Remove the bolt -1- and the vent -2-.

Scheme 38

Remove the cover -arrow- and the pollen filter.

Scheme 39

Carefully lay the carpet aside with the help of a second technician.

Move the insulating mat -arrow- up.

Scheme 40

Release and remove the connector -3-.

Scheme 41

Remove the nuts -1- and remove the tire pressure monitoring control module -- -1- upward.

Installing

Scheme 42

Install in reverse order of removal. Note the following

If the center console was pulled out of the instrument panel when pulling the carpet back, insert the center console with the pins -1- in the instrument panel -2-.

Tighten the nuts -1- to 2 Nm.

The system must be coded if the tire pressure monitoring control module -- is replaced TIRE PRESSURE MONITORING SYSTEM, USING THE SYSTEM use vehicle diagnostic tester.

TIRES, CHANGING

Replace the nickel-plated valve insert each time a tire is changed.

The tire pressure sensor -- can be reused.

For safety reason, replace the tire pressure monitoring sensor -- and clean the rim after using tire sealant.

Let air out of the tire by removing nickel-plated valve insert.

Remove the tires (Scheme 43)

When changing a tire, replace the valve insert -item 2- TIRE PRESSURE MONITORING SYSTEM, DIRECT SYSTEM .

Do not clean the sensors with steam blasting or strong compressed air.

When reusing used tire pressure sensors --, check the connection between the sensor and the metal valve for damage.

Replace damaged sensors.

Install tires (Scheme 44)

Install new nickel-plated valve insert.

Fill tires.

Balance the tire.

Scheme 43

Roll or press the tire off.

When using pressure paddles, first separate tires from side opposite of valve.

Do not use pressure paddles in hatched area -a-.

Position mounting head near valve so that so that tire iron can be put on approximately 30° -b- next to tire valve.

Then remove tire in valve area first.

Scheme 44

Do Not Use Pressure Paddles in Valve Area.

Position tire pressure sensor -- approximately 180° opposite the mounting head.

Press tire in bed approximately 90° in front of mounting head -arrow-.

Mount tire.

TIRE PRESSURE SENSOR

Special tools and workshop equipment required

1. Torque Wrench V.A.G 1410

Removing

Scheme 45

Remove the union nut -1-.

Remove tire pressure sensor -- -2- from rim well.

Installing

Note. Replace damaged sensors. When using used tire pressure monitoring sensors, check the connection between the sensor and the valve for damage. For safety reason, replace the tire pressure monitoring sensor and clean the rim after using tire sealant. Do not clean the tire pressure sensors with steam jet cleaners or strong compressed air. When sliding the new seal and sealing washer on, prevent the valve body from being pressed through by counter holding it (the antenna connection could be damaged).

Insert the sensor -2- with the new seal and sealing washer through the rim from the inside and press the seal into the valve bore. Make sure the valve shaft is in the center inside the valve hole.

Install union nut -1- on tire pressure sensor -- -2-. When doing this, press the sensor into the bed and hold it there.

Press tire pressure sensor -- -1- onto rim well and tighten union nut. Refer to Tire Pressure Monitoring Sensor -- OVERVIEW .

Scheme 46

Note. After installing, tire pressure sensor -- must lie firmly in its bed. Sealing washer -arrow- becomes slightly deformed when doing this.

ACTIVE STEERING CONTROL MODULE -J792

Special tools and workshop equipment required

1. Torque Wrench V.A.G 1783

Removing

The active steering control module -J792- is located in the footwell under the driver seat.

Before removing control module, read out code using Guided Fault Finding in "Replace control module" function.

Loosen the driver seat and slide it back with the wires connected.

Remove the sill panel strip. Refer to Removal and Installation .

Remove the foot rest. Refer to Removal and Installation .

Disengage the carpet and support it using a suitable block of wood -6-.

Scheme 47

Remove nuts -7-.

Remove the nuts -1- and remove the ground wire -2- from the threaded pin.

Carefully disconnect the wiring harness clip connection -3- from the bracket -4-.

Remove the wiring harness connectors -3- from the control module -8-.

Remove the bolts -5- from the control module -8- and remove the bracket -4-.

Installing

Install in reverse order of removal. Note the following

Follow the sequence when installing the control module

Tighten the bracket -4- with the bolts -5- to the control module -8- to 8 Nm.

Connect the wiring harness connectors -3- to the control module -8-.

Carefully slide the wiring harness clip connection -3- into the bracket -4-.

Insert the control module with the bracket.

Connect the ground wire -2- to the threaded pin and tighten the nuts -1- to 6 Nm.

Tighten nuts -7- to 6 Nm.

The system must be calibrated if the active steering control module is replaced --. Refer to DYNAMIC STEERING BASIC SETTING .

Tightening specifications

Scheme 48

ADAPTIVE CRUISE CONTROL SENSOR -G550

The adaptive cruise control sensor -- is located behind the right air intake grille in the front bumper.

Special tools and workshop equipment required

1. Torque Wrench V.A.G 1783

Removing

If it necessary to replace the distance regulation control module, then start the program on the vehicle diagnostic tester in "Guided Functions".

Remove the right front air intake grille. Refer to "Front Bumper" in Removal and Installation .

Remove the cover -item 1- Distance Regulation Control Module -- CLIP, REPLACING, FROM MY 12 from the adaptive cruise control sensor --.

Vehicles through MY 12

Scheme 49

Turn the nuts -2- approximately 45° to the left and remove them.

Release and remove the connector -3-.

Remove the adaptive cruise control sensor -- -1- forward through the bumper cover.

Remove the bolts -1- and the bracket -2-.

Scheme 50

Vehicles from MY 12

Scheme 51

Turn the nuts -2- approximately 45° to the left and remove the adaptive cruise control sensor -- -1- with the stud bolts from the nuts.

Release and remove the connector -3-.

Remove the adaptive cruise control sensor -- -1- forward through the bumper cover.

Turn the bolt -1- just far enough so that the tip of the bolt does not extend past the spring nut.

Scheme 52

Remove the bolt -2 and 3- and the bracket.

Installing

Install in reverse order of removal. Note the following

Note. Studs in bracket are preset. If necessary, correct adjustment.

Place sensor on a soft and clean surface.

Scheme 53

Dimension -a- must be 43 mm.

Insert bracket and tighten bolts.

Tightening specification, refer to Adaptive Cruise Control Sensor -G550- OVERVIEW

Install the adaptive cruise control sensor -- and carefully push the nuts onto the threaded pins in the sensor.

Install the air intake grille. Refer to "Front Bumper" in Removal and Installation .

Calibrate the adaptive cruise control. Refer to ADJUSTMENT PROCEDURE USING ACC Setting Device VAS 6190 .

DISTANCE REGULATION CONTROL MODULE -- CLIP, REPLACING, FROM MY 12

If the stud bolt is being removed, then the clip -item 3- Adaptive Cruise Control Sensor -G550- OVERVIEW must always be replaced. -item 2

The clip will get damaged when it is being removed.

1. The adaptive cruise control sensor -G550- is removed and the nuts are removed from the stud bolts.

Remove the stud bolt -1- with a suitable tool -2-.

Scheme 54

Place a screwdriver between the hook and the housing.

Scheme 55

Using the screwdriver, bend the hook to the center point until it audibly breaks off.

1. Repeat this until all the hooks are broken.

To prevent the broken hooks from getting caught on the housing, remove them using needle nose pliers.

Remove the clip with needle nose pliers as illustrated.

Insert the new clip into the hole for the housing from the left side and push it in by hand until it audibly engages.

Scheme 56

1. Make sure the tabs are lined up correctly.

Mount the stud bolt making sure is it parallel to the hole.

The stud bolt can be tighten once is it correctly aligned.

Install the stud bolt until the dimension -a- is reached.

Dimension -a- = 43.3 mm

Repeat this on the other clips.

Install the ACC sensor in the bracket and then adjust the ACC. Refer to ADJUSTMENT PROCEDURE USING ACC Setting Device VAS 6190 or ADJUSTMENT PROCEDURE USING ACC Setting Device VAS 6430 .

DIRECTIONAL STABILIZATION ASSISTANCE CONTROL MODULE -J759- AND LENS SCREEN

Removing

Remove the cover trim -1- down from the bracket in the direction of the -arrow-.

Scheme 57

Press the retaining clamp -1- in the direction of the -arrow- and remove the directional stabilization assistance control module sideways and down from the bracket.

Scheme 58

Disconnect the electrical connector and remove the directional stabilization assistance control module.

Press the clamps -arrows-, pull the lens screen out of the bracket and remove it toward the rear.

Scheme 59

Installing

Install in reverse order of removal. Note the following

Note. The camera visual area on the inside of the window must not be covered with condensation or dirty. If it is, clean the visual window by hand using a cleaning solution. If the directional stabilization assistance control module -- is replaced, the camera -- and the control module must be recalibrated -- CALIBRATION PROCEDURE .

Scheme 60

Special tools and workshop equipment required

1. Vehicle Diagnosis, Testing and Information System VAS 5051 A
2. Diagnostic Cable VAS 5051/5A
3. ACC Adjustment Device VAS 6190
4. Adjuster for ACC VAS 6190/2

Special tools and workshop equipment required

Scheme 61

Scheme 62

Scheme 63

Scheme 64

Scheme 65

Scheme 66

Scheme 67

Scheme 68

1. Tool Insert T40183
2. Torque Wrench V.A.G 1410
3. Torque Wrench V.A.G 1783
4. Brake Pedal Actuator V.A.G 1869/2
5. Vehicle Diagnostic, Testing and Information System VAS 5051 B with corresponding diagnostic cable.
6. Adjuster for ACC VAS 6190/2
7. ACC Adjustment Device VAS 6430
8. Steering Wheel Sales VAS 6458
9. Wheel alignment computer released by VW/Audi
10. Not illustrated
11. ADC Test Fixture VAS 6041
12. ADC Reflector Mirror VAS 6041/1

See also:
• General Information
• AIRBAG STEERING WHEEL
• Removal and Installation
• STEERING COLUMN
• SPECIFICATIONS
• HYDRAULIC POWER STEERING GEAR STEERING, CENTERING
• Description and Operation
• [For engine(s) CAEB, CALA] Removal and Installation
• SUBFRAME, CROSSBRACE, STABILIZER BAR, COUPLING ROD AND SUBFRAME SHIELD OVERVIEW
• UPPER TRANSVERSE LINK, TIE ROD, COIL SPRING, LOWER CONTROL ARM AND LEVEL CONTROL SYSTEM SENSOR OVERVIEW
• HYDRAULIC POWER STEERING GEAR, SERVICING
• General Information
• Removal and Installation
• Removal and Installation
• Removal and Installation
• TIRE PRESSURE MONITORING SYSTEM, DIRECT SYSTEM
• Tire Pressure Monitoring System/Tire Pressure Monitoring System Display
• TEST PREREQUISITES
• EXPLANATIONS OF THE PRODUCTION CONTROL NUMBERS (PR NUMBER)
• STEERING RACK, CHECKING MECHANICAL CENTER POSITION
• WHEEL RUN-OUT COMPENSATION
• MAXIMUM STEERING ANGLE, CHECKING
• FRONT AXLE CAMBER, CHECKING AND ADJUSTING
• REAR AXLE CAMBER, ADJUSTING
• REAR AXLE TOE, ADJUSTING
• FRONT AXLE TOE, ADJUSTING
• DYNAMIC STEERING BASIC SETTING
• ADJUSTMENT PROCEDURE USING ACC Setting Device VAS 6190
• CALIBRATION PROCEDURE
• Directional Stabilization Assistance Control Module -J759- AND LENS SCREEN
• Tire Pressure Sensor
• TIRE PRESSURE MONITORING SYSTEM, USING THE SYSTEM
• Tire Pressure Monitoring Control Module -J502
• TIRES, CHANGING
• Active Steering Control Module -J792
• Distance Regulation Control Module -- CLIP, REPLACING, FROM MY 12
• Adaptive Cruise Control Sensor -G550
• WHEEL ALIGNMENT SPECIFIED VALUES
• WHEN VEHICLE ALIGNMENT IS NECESSARY
• Subsequent procedures are performed via the vehicle diagnosis, testing and information system.
• ACC Setting Device VAS 6190, CONVERTING FOR ADJUSTMENT PROCEDURE
• Tire Pressure Monitoring Sensor -- OVERVIEW