Lights, Switches (Exterior - Except Cabriolet) Audi A4 B6

Headlights, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Halogen headlights, exploded view

Note. Headlights must be readjusted after performing measures which could affect their setting.

Note. The following list refers to (Scheme 22).

1. Gap cover
2. Headlight housing
3. Venting element
4. Light bulb for turn signal/parking light 12 V, 27/7 W Orange Light bulb replacement. See «LIGHT BULB FOR TURN SIGNAL/PARKING LIGHT, REPLACING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
5. Bulb carrier For turn signal/parking light
6. Housing cover For low beam
7. Light bulb for low beam H7 - 12 V, 55 W Light bulb replacement. See «DIPPED BEAM BULB (HALOGEN HEADLIGHTS), REPLACING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
8. Housing cover For high beam
9. Light bulb for high beam H7 - 12 V, 55 W Light bulb replacement. See «MAIN BEAM BULB (HALOGEN HEADLIGHTS), REPLACING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
10. 6 Nm
11. Venting element
12. 6 Nm
13. Impact screw For adjusting headlight housing to body contour Must make contact at lock carrier

High intensity gas discharge (Xenon) headlights, exploded view

Note. The following list refers to (Scheme 23).

1. 1.5 Nm
2. Igniter for gas discharge lamps -N195- Removing and installing. See «IGNITOR FOR GAS-DISCHARGE LAMPS -N195-, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__ignitor-for-gas-discharge-lamps-n195-removing) .
3. Surround
4. Headlight housing
5. Ventilation element Qty. 2
6. Light bulb for turn signal/parking light 12 V, 27/7 W Orange Light bulb replacement. See «LIGHT BULB FOR TURN SIGNAL/PARKING LIGHT, REPLACING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
7. Light bulb carrier For signal/parking light
8. Housing cover For low beam headlight
9. High intensity gas discharge (Xenon) bulb 35 W, D2S Replacing bulb. See «BULB FOR DIPPED BEAM (HIGH INTENSITY GAS DISCHARGE (XENON) HEADLIGHTS), REPLACING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__bulb-for-dipped-beam-high-intensity) .
10. Housing cover For main beam
11. Main beam bulb H7 - 12 V, 55 W Replacing bulb. See «LIGHT BULB FOR HIGH BEAM (HIGH INTENSITY GAS DISCHARGE (XENON) HEADLIGHTS), REPLACING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
12. Positioning motor for headlight beam adjusting motor -V48-/-V49- Removing and installing. See «SIDE LIGHT BULB (HIGH INTENSITY GAS DISCHARGE (XENON) HEADLIGHTS), REPLACING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) . NOTE: Performing measures which could affect their setting headlights must be readjusted.
13. O-ring For positioning motor for headlight vertical aim control
14. 6 Nm
15. Stop bolt For aligning headlight housing to body contour Must sit against lock carrier

Left headlight

1. If installed, detach cover -1- in left of engine compartment.

Right headlight

1. If installed, detach cover -1- in right of engine compartment.
2. Remove bolts -arrows-.
3. Disengage activated charcoal filter solenoid valve -N80- -1- on air duct.
4. Remove air duct -2-.

Continuation for both sides

1. Apply adhesive tape in area below the headlight to protect the paint.
2. Remove screws -1- and -5-.
3. Loosen screws -2- and -4- several turns but do not remove completely.
4. Separate wire connectors where installed.
5. Disconnect electrical harness connector -3-.
6. Remove headlight from body toward the front.

Installing

Install in reverse order, paying attention to the following

1. Check that ventilation elements at bottom of headlights are inserted.
2. Push headlight horizontally up to stop on bottom headlight mount.
3. Bring stop bolt -1- into contact with lock carrier.
4. Align headlight to contours of body (gap widths) using stop bolt. NOTE: Note area of fender panel cut out when aligning headlight.
5. Tighten bolts -2 to 5-.
6. Adjust headlights after installation. See «HEADLIGHTS, ADJUSTING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__headlights-adjusting) .

Tightening torque

TORQUE SPECIFICATION: HEADLIGHT

Headlights, adjusting

For specified headlight settings and adjustment instructions

See HEADLIGHTS, CHECKING AND ADJUSTING .

Special tools and equipment

1. VAS 5051 with VAS 5051/1 and VAS 6017

Note. On vehicles with high intensity gas discharge (Xenon) headlights, always check, erase and then perform basic setting of fault memory before manually adjusting adjuster screws.

Test requirement

1. Vehicle diagnostic, testing and information system VAS 5051 with K-wire adapter VAS 6017 connected, vehicle self-diagnosis and vehicle system "55 - headlight vertical aim control" selected.

Indicated on VAS 5051

Scheme 22

1. Enter diagnostic function "04 - Basic setting" in selection -1-.

Indicated on VAS 5051

Scheme 23

1. Enter display group max. input value = 255

1. Use keypad -2- to enter "001" for "display group number 001" and confirm by pressing Q key. The headlights will now be moved into setting position.

Indicated on VAS 5051

Scheme 24

1. Display group 1 System in basic setting
2. Headlight Adjusting

The headlights are now in setting position.

Note. Basic setting function 1 switches off automatic range control and fault "Headlights not set" will be stored in DTC memory.

All models

Adjusting screws on left headlight.

Scheme 25

The arrangement for right headlight is symmetrically opposite.

1. Height adjustment screw
2. Height/lateral adjustment screw

1. For height adjustment, turn adjustment screws -1- and -2- the same number of turns.
2. For lateral adjustment, turn only adjustment screw -2-.

Vehicles with High intensity gas discharge (Xenon) headlights

Indicated on VAS 5051

Scheme 26

1. To change into display group 002 press s key -3-.

1. 2-Display group 1 System in basic setting
2. 2-Control position Learned

The control module has now learned this setting.

Note. The fault "Headlights not set" in DTC memory will be erased and automatic range control function will be restored.

1. End function "04 - Basic setting" by pressing < key.

Indicated on VAS 5051

Scheme 27

1. Enter diagnostic function "06 - End output" in selection -1-.

1. Remove headlight. See «HEADLIGHTS, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .

Scheme 28

1. If installed, detach cover -1- in right of engine compartment. see scheme 17
2. Remove bolts -arrows-. see scheme 18
3. Disengage activated charcoal filter solenoid valve -N80 -1- on air duct
4. Remove air duct -2-.

Scheme 29

Scheme 30

1. Detach cover for dipped beam from headlight housing.
2. Unplug connector -2- at dipped beam bulb.
3. Disengage wire clip -1- and take bulb -3- out of housing.

Install in reverse order, paying attention to the following

1. Insert new bulb in housing, taking care not to touch glass bulb with bare hands.
2. Secure bulb with spring clip.
3. Re-attach connector and close housing cover.
4. Secure housing cover with spring clip.

1. If installed, detach cover -1- in left of engine compartment.
2. Remove connectors -1- and -2- from holder.
3. Unclip holder for connector and pull off upward -arrow-.

1. If installed, detach cover -1- in right of engine compartment.
2. Remove bolts -arrows-. see scheme 23
3. Disengage activated charcoal filter solenoid valve -N80- -1- on air duct.
4. Remove air duct -2-.

1. Remove housing cover for high beam from headlight housing
2. Unplug connector -3- at main beam bulb.
3. Disengage wire clip -2- and take bulb -1- out of housing.

Install in reverse order, paying attention to the following

1. Insert new bulb in housing, taking care not to touch glass bulb with bare hands.
2. Secure bulb with spring clip.
3. Re-attach connector and close housing cover.
4. Secure housing cover with spring clip.

Bulb for dipped beam (High intensity gas discharge (Xenon) headlights), replacing

See Caution before beginning repairs on the electrical system . See HEADLIGHTS, SERVICING .

1. Remove headlight. See «HEADLIGHTS, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .

1. If installed, detach cover -1- in right of engine compartment.
2. Remove bolts -arrows-.
3. Disengage evaporative emission (EVAP) canister purge regulator valve -N80- -1- on air duct.
4. Remove air duct -2-.

1. Remove housing cover for low beam from headlight housing.
2. Disconnect connector -1- at High intensity gas discharge (Xenon) headlight by turning counter-clockwise.
3. Disengage wire clamp -arrows- and pull High intensity gas discharge (Xenon) light bulb out of headlight housing.

Install in reverse order, paying attention to the following

1. Insert new bulb in housing, taking care not to touch glass bulb with bare hands. NOTE: Observe installation position: tab at top of light bulb socket must engage at recess of light bulb.
2. Secure High intensity gas discharge (Xenon) bulb with spring clip.
3. Secure housing cover with spring clip.

1. If installed, detach cover -1- in left of engine compartment.
2. Remove connectors -1- and -2- from holder.
3. Unclip holder for connector and pull off upwards -arrow

1. If installed, detach cover -1- in right of engine compartment.
2. Remove bolts -arrows-.
3. Disengage evaporative emission (EVAP) canister purge regulator valve -N80- -1- on air duct.
4. Remove air duct -2-.

1. Detach cover for main beam from headlight housing.
2. Unplug connector -3- at main beam bulb.
3. Disengage wire clip -2- and take bulb -1- out of housing.

Install in reverse order, paying attention to the following

1. Insert new bulb in housing, taking care not to touch glass bulb with bare hands.
2. Secure bulb with spring clip.
3. Re-attach connector and close housing cover.
4. Secure housing cover with spring clip.

Removing

1. Remove headlight. See «HEADLIGHTS, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
2. Turn socket -arrow- counter-clockwise and pull out of housing.
3. Remove light bulb from socket.

Installation is the reverse order of removal while observing the following

1. Insert new light bulb into housing, without touching glass portion with bare hand.
2. Install headlight. See «INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__installing) .

1. If installed, detach cover -1- in left of engine compartment.
2. Remove connectors -1- and -2- from holder.
3. Unclip holder for connector and pull off upward -arrow-.

1. If installed, detach cover -1- in right of engine compartment.
2. Remove bolts -arrows-.
3. Disengage evaporative emission (EVAP) canister purge regulator valve -N80- -1- on air duct.
4. Remove air duct -2-.
5. Detach cover for high beam from headlight housing.
6. Disengage headlight beam adjusting motor: Turn counterclockwise -arrow- for right headlight; turn clockwise for left headlight.
7. Slide ball head of adjustment axle out of ball head mount toward bottom by bending.
8. Disconnect electrical harness connector.

Install in reverse order, paying attention to the following

Note. If adjustment motors are removed and installed or replaced, a headlight adjustment must always be performed. See HEADLIGHTS, ADJUSTING .

Ignitor for gas-discharge lamps -N195-, removing and installing

See Caution before beginning repairs on the electrical system . See HEADLIGHTS, SERVICING .

Scheme 31

1. Remove headlight. See «HEADLIGHTS, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
2. Detach cover for dipped beam from headlight housing.
3. Detach connector -1- on High intensity gas discharge (Xenon) bulb by turning counter-clockwise. NOTE: Do not remove retaining spring -arrows- for High intensity gas discharge (Xenon) bulb.
4. Remove bolts -arrows
5. Detach igniter from headlight housing.
6. The connector on High intensity gas discharge (Xenon) bulb can then be guided through headlight housing

Installation is carried out in the reverse order.

Repair kit for headlight housing, installing

Note. Broken-off headlight securing lugs can be replaced by installing repair kit. Complete headlight replacement is not necessary. Different repair sets are available for left and right headlight

1. Remove headlight with broken securing lug. See «HEADLIGHTS, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet).
2. Remove remains of broken lug -3- and -4- on headlight housing.
3. Attach lug -2- from repair kit to edge of headlight housing and secure it with two screws -1- from rear. see scheme 41

TORQUE SPECIFICATION: HEADLIGHT

Fog lights, servicing

1. Disconnect battery Ground strap with ignition switched off. NOTE: Steps after re-connecting voltage supply. See «BATTERY DISCONNECT PRECAUTIONS»(/audi/a4/b6-2000-2006/remont/charging-system/#generators-regulators) .

1. Disengage catches -1 to 4- using a screwdriver -arrow- and pull off air inlet grid in lower part of bumper.
2. Remove bolts -arrows-.
3. Disengage and remove headlight inserts.
4. Unplug connector.

Install in reverse order, paying attention to the following

1. Attach fog light to inside of bumper.
2. Adjust fog lights. See «FOG LIGHTS, ADJUSTING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__fog-lights-adjusting) .

TORQUE SPECIFICATION: FOG LIGHTS

1. Remove fog light. See «FOG LIGHTS, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
2. Unplug connector -1- at bulb.
3. Turn bulb counter-clockwise -arrow- and pull out of fog light housing.

Install in reverse order, paying attention to the following

1. Do not touch glass bulb with bare hands.
2. Tighten bulb by turning clockwise.
3. Adjust fog lights. See «FOG LIGHTS, ADJUSTING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__fog-lights-adjusting) .

Fog lights, adjusting

1. Turn the adjuster screw -arrow- counter-clockwise to lower the beam. There is no provision for lateral adjustment.

Note. Right fog light is shown in illustration. The location of adjuster screw is symmetrically opposite on left fog light. Illustration shows fog light without cover.

Side mounted turn signals

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

1. Push turn signal towards front of vehicle against retaining tab -arrow- and carefully remove from opening in wing.
2. Unplug connector.

Installation is carried out in the reverse order.

Rear lights, servicing

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Overview

Note. The following list refers to see scheme 47.

1. Tail light bulb 12 V, 5 W
2. Brake light/rear light bulb 12 V, 21/5 W
3. Clip nut Qty. 2
4. Connector
5. Retainer piece
6. Nut - 12 Nm
7. O-ring Replace if damaged
8. Bolt - 6 Nm
9. Turn signal bulb 12 V, 21 W Amber color
10. Reversing light bulb 12 V, 21 W
11. Bulb carrier
12. Fog light bulb 12 V, 21 W
13. Housing

1. Fold pre-punched area -1- of luggage compartment lining forward.
2. Remove bolt -3-.
3. Swivel tail light outward and disengage retaining pins from body.
4. Unplug connector at bulb carrier.
5. Press retaining catches inward -arrows- and take bulb carrier out of tail light unit.
6. Turn bulbs to remove them from their holders.

Install in reverse order, paying attention to the following

Note. Make sure that seal between body and tail light housing is properly seated.

1. Position tail light on body and press retaining pins into holes.
2. Tighten bolts -3- to 6 Nm.

Note. After loosening nut -2-, tail lights can be aligned to body contours (even gap widths).

Tightening torques

TORQUE SPECIFICATION: TAIL LIGHT

Overview (Avant)

Note. The following list refers to see scheme 51.

1. Bulb carrier
2. Clip nut Qty. 2
3. Electrical harness connector
4. Securing piece Replace if seal is damaged
5. Nut - 12 Nm
6. O-ring Replace if damaged
7. Bolt - 6 Nm
8. Light bulb for fog light 12 V, 21 W
9. Light bulb for turn signal 12 V, 21 W Orange
10. Light bulb for back up light 12 V, 21 W
11. Light bulb for brake light/rear light 12 V, 21/5 W
12. Housing

1. Unclip plug cap -arrow- from luggage compartment trim.
2. Remove screw -1-.
3. Swing taillight outward while unhooking securing bolt from chassis.
4. Disconnect electrical harness connector at bulb carrier.
5. Spread mounting bracket -arrows- and remove bulb carrier from taillight.
6. Remove light bulbs from sockets.

Installation is the reverse order of removal while observing the following

Note. Make sure seal between chassis and taillight housing seals evenly.

1. Place taillight on chassis and press securing bolts into bores.
2. Tighten screw -1- to 6 Nm.

Note. Taillight can be adjusted to vehicle contour (same gap dimensions) after loosening nut -2-.

TORQUE SPECIFICATION: TAIL LIGHT (AVANT)

High-mount brake light, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

High-mount brake light (sedan), removing and installing

Note. The high-mount brake light is accessible from luggage compartment via panel opening below rear shelf.

1. Unplug connector -1- at high-mount brake light -2-.
2. Pry off retaining clips in direction of arrow.
3. Pull high-mount brake light out of panel opening from below.

Install in reverse order, paying attention to the following

Note. Complete high-mount brake light must be replaced if LEDs are burned out.

1. Special hook 3370

1. Remove upper trim of rear lid See «REAR LID TRIM, ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet) .
2. Insert a screwdriver -1- into the hole in the rear lid through which the wire leads to high-mount brake light.
3. Disengage securing rail -2- of spring tabs toward the right - arrow in exploded view- by pressing screwdriver handle to the left -arrow- with force.
4. Using 3370 special hook, pull high-mount brake light -2- out of chassis cutout starting at right -arrow-.
5. Disconnect electrical harness connector -1-.
6. Remove securing rail for high-mount brake light (5x) from rear lid.

Installation is the reverse order of removal, while observing the following

Note. In the case of faulty LEDs, complete high-mount brake light must be replaced

1. Insert spring clips at housing of high-mount brake light while observing installation position.
2. Line up spring clips with securing rail.

License plate light, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Note. The illustration shows right hand-license plate light.

1. Remove bolt -arrow- in handle recess.
2. Pry bulb carrier out of handle recess.
3. Remove bulb (12 V, 5 W) from clamp-type holder.

Installation is carried out in the reverse order.

Steering Column Switch Module (SCSM)

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

General description

Steering column switch module (SCSM) is composed of return ring with slip ring, Steering Angle Sensor -G85-, steering column switch (signal switch, wiper switch, cruise control switch) and Steering Column Electronic Systems Control Module -J527-.

Use VAS5051 tester to check Steering Column Electronic Systems Control Module -J527-.

1. Remove airbag unit and steering wheel: See appropriate air bag article in Restraints.
2. Pull steering column all the way out and down.
3. Remove Torx bolts -3- and -5- as well as the hex socket bolt -4-. see scheme 61
4. Separate top trim -2- for steering column switches from bottom trim -2- and remove both parts.

To install, insert top trim piece into catches of bottom trim piece, press together and bolt.

Note. Wheels must be in straight-ahead position when removing or installing return ring with slip ring.

1. Disconnect harness connector -1-.
2. Carefully release catch (arrows) and pull return ring with slip ring from steering column switch module (SCSM).
3. Remove bolt 9. See «STEERING COLUMN SWITCH MODULE (SCSM), DISASSEMBLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__steering-column-switch-module-scsm-disassembling) .
4. Disconnect electrical harness connectors.
5. Carefully pull off steering column switch together with steering column electronic systems control module.

Installation is reverse of removal, noting the following

1. Make sure that all 3 catches as well as the harness connector are engaged cleanly.
2. Zero the Steering Angle Sensor -G85-.

Use VAS5051 tester to do so.

TORQUE SPECIFICATION: STEERING COLUMN SWITCH MODULE

Steering Column Switch Module (SCSM), disassembling

Note. The following list refers to see scheme 63.

1. Return spring with slip ring Clipped in at switch for turn signals, high beam and low beam and flasher WARNING: Return ring with slip ring must not be moved in removed condition.
2. Steering Angle Sensor -G85- Clipped on at return ring with slip ring
3. Cylinder bolt
4. Cruise control switch
5. Cylinder bolt
6. Switch for turn signals, high beam and low beam and flasher
7. Retaining bracket
8. Steering Column Electronic Systems Control Module -J527- Terminal assignment of Steering Column Electronic Systems Control Module -J527-. See «TERMINAL ASSIGNMENT AT STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE -J527- (FRONT)»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__terminal-assignment-at-steering-column-electronic) .
9. Clamping screw - 3 Nm
10. Switch for windshield wiper and wiper-washer operation
11. Cylinder bolt

Steering Column Electronic Systems Control Module -J527- is part of the complete system" steering column switch module (SCSM). It receives its signals e.g. from steering column switch.

Use VAS5051 tester to check Steering Column Electronic Systems Control Module -J527-.

Terminal assignment at Steering Column Electronic Systems Control Module -J527- (front)

Note. The following list refers to see scheme 64.

1. Cruise control system harness connector 2-Ground (GND) 2-Set 3-Distance 4-12 V voltage supply 5-Mount/Tip function "Off" 6-Acceleration/Deceleration 7-Engaged "Off"
2. Turn signal harness connector 2-Ground (GND) 2-Radio remote control (special vehicles) 3-Alarm (special vehicles) 4-Not occupied 5-Flasher/light changeover 6-Blinking
3. Harness connector of multi-function steering wheel/Tiptronic/heated steering wheel 7-Tip- "-" 8-Multi-function steering wheel "+"- Voltage supply 9-Multi-function steering wheel data 10-Sensor heater/tip- "+" 11-Multi-function steering wheel dimmer 12-Tiptronic gate 13-Steering wheel heating "+" 14-Steering wheel heating "-"
4. Steering angle sensor Light barrier 5 Light barrier 3 Light barrier 1 12 V voltage supply 5 V voltage supply Light barrier 6 Light barrier 4 Light barrier 2 Steering angle sensor Ground (GND) Light barrier 7
5. Signal horn Horn Ground (GND) Horn
6. Wiper system 2-Ground (GND) 2-Interval-potentiometer 3-Board computer 4-Not occupied 5-Washing 6-Wiping

16-pin multi-pin connector

Note. The following list refers to see scheme 65.

1. Ground (GND)
2. Terminal 30
3. Powertrain CAN-bus shielding
4. Not assigned
5. Cruise Control System engaged Off
6. Alarm (special vehicles)
7. Two-way radio transmitter (special vehicles)
8. Comfort system CAN-bus Low
9. Comfort system CAN-bus High
10. Powertrain data-BUS (shielded) High
11. Powertrain data-BUS (shielded) Low
12. Ignition lock terminal 75
13. Ignition lock terminal 15
14. Ignition lock S-contact
15. Ignition lock terminal 50
16. Ignition lock terminal P

Lock cylinder and ignition/starter switch, servicing

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Note. Induction coil for anti-theft immobilizer is connected to lock cylinder and cannot be replaced individually. If the induction coil is faulty, the lock cylinder must be replaced. Observe induction coil specifications when replacing lock cylinders. See READER COIL, REPLACING .

1. Remove steering column switch: See «STEERING COLUMN SWITCH MODULE (SCSM), REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
2. Check whether the electrical harness connector at induction coil is disconnected.

Vehicles with automatic transmission

1. Place selector lever in position "P".
2. Turn ignition key to "Ignition ON" position -arrow-. see scheme 66
3. Then lift locking bracket -1- slightly and pull locking cable - 2- from ignition lock housing.

All

Note. The spare key is necessary for removing the lock cylinder, because the following sequence can only be performed using an ignition key with flat key grip, i.e. without illumination and without remote control.

1. Turn replacement key to "Ignition ON" position, this lines up the cutout in the trim -arrow- with the hole in ignition lock. NOTE: The illustration shows the correct lock position without the ignition key.
2. Insert steel wire or pin (approx. 1.5 mm diameter) into hole -1- up to stop while pulling lock cylinder -2- with induction coil out of steering lock housing -3-.

Note. Always observe specifications for replacing induction coil for anti-theft immobilizer if lock cylinder must be replaced. See READER COIL, REPLACING .

Installation is reverse of removal, noting the following

1. Insert spare key into lock cylinder and turn to position "ignition on".

1. Re-insert steel wire or pin -1- into the hole in front of lock up to stop.
2. Slide lock cylinder -2- with induction coil into steering lock housing -3-.
3. Then pull out wire and press in lock cylinder firmly until catch engages audibly.
4. Install steering column switch: See «STEERING COLUMN SWITCH MODULE (SCSM), REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
5. Connect electrical harness connector at induction coil for anti-theft immobilizer when installing steering column switch.

1. Remove steering column switch: See «STEERING COLUMN SWITCH MODULE (SCSM), REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
2. Check whether the electrical harness connector at reading coil is disconnected.
3. Disconnect harness connector -1- at ignition/starter switch.
4. Remove sealing paint from both mounting screws -arrows-.
5. Loosen mounting bolts -arrows- somewhat and pull ignition/starter switch out of steering lock housing -2-.

Installation is reverse of removal, note the following

Note. Make sure ignition/starter switch and lock cylinder are both in the same position, for example "ignition on" when installing.

1. Secure mounting bolts -arrows- at steering lock housing -2- with sealing paint.

Ignition/starter switch, terminal assignments

1. 15 - Terminal 15
2. 30 - Terminal 30
3. 50 - Terminal 50
4. 50b - Terminal 50b
5. 75 - Terminal 75
6. 86s - Terminal 86s
7. P - Park position

Parking aid, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

Parking aid, exploded view

Note. The following list refers to see scheme 73.

1. Parking aid sensor In front bumper Only with 8-channel parking aid Removing and installing. See «FRONT PARKING AID SENSOR, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
2. Parking aid button -E266- Only with 8-channel parking aid With parking aid switch illumination -L117- With integrated parking aid warning lamp -K136- Location. See «LOCATION FOR PARKING AID BUTTON -E266»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__location-for-parking-aid-button-e266) .
3. Front parking aid warning buzzer -H22- Only with 8-channel parking aid Behind driver's storage compartment Removing and installing. See «FRONT PARKING AID WARNING BUZZER -H22- (8-CHANNEL PARKING AID), REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
4. Rear parking aid warning buzzer -H15- Sedan: Below rear shelf Removing and installing. See «WARNING BUZZER FOR PARKING -H15- (SEDAN), REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) . Avant: In luggage compartment at left rear below side trim. Removing and installing. See «WARNING BUZZER FOR PARKING -H15- (AVANT), REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet__warning-buzzer-for-parking-h15-avant) .
5. Parking aid sensors In rear bumper Removing and installing. See «REAR PARKING AID SENSOR, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
6. Control module for parking aid -J446- Behind luggage compartment side trim (left side) Removing and installing. See «CONTROL MODULE FOR PARKING AID -J446-, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .

Location for parking aid button -E266

1. In switch strip of center console
2. See «SWITCHES IN CENTER CONSOLE, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/communication-devices/#lights-switches-interior-anti-theft-except-cabriolet) .

Location: At rear left of luggage compartment rear panel, below rear light.

1. Remove left luggage compartment side trim. See «LUGGAGE COMPARTMENT SIDE TRIM, ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet__luggage-compartment-side-trim-assembly-overview) or «SIDE LUGGAGE COMPARTMENT TRIM, ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet__side-luggage-compartment-trim-assembly-overview) (Avant).
2. Unplug connectors -1 to 3-.
3. Remove bolts -arrows-.
4. Detach Control module for parking aid.

Installation is carried out in the reverse order.

TORQUE SPECIFICATION: PARKING AID CONTROL MODULE

The front parking aid warning buzzer is secured to support for instrument panel in driver's side footwell.

1. Remove driver's storage compartment: See «DRIVER-SIDE STORAGE COMPARTMENT (WITH AND WITHOUT KNEE BOLSTER), ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/mirrors/#interior-equipment-except-cabriolet__driver-side-storage-compartment-with-and-without) .
2. Unplug connector -arrow-.
3. Unscrew bolts -1-.
4. Detach warning buzzer.

Installation is the reverse order of removal while observing the following

1. Press threaded pins into expanding clips.

Location: Right rear, below rear shelf.

1. Remove rear shelf: See «REAR SHELF, ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/gauges-instrument-panels/#interior-trim-except-cabriolet__rear-shelf-assembly-overview) .
2. Disconnect electrical harness connector.
3. Using a TORX screwdriver, turn to remove threaded pin of expanding clip
4. Remove warning buzzer -arrow- from luggage compartment separating wall upward.

Installation is the reverse order of removal, while observing the following

1. Press threaded pins into expanding clips.

Warning buzzer for parking -H15- (Avant), removing and installing

Location: In luggage compartment at left rear below the side trim.

1. Disconnect electrical harness connector.
2. Using a TORX screwdriver, turn to remove threaded pin of expanding clip
3. Remove warning buzzer -arrow- upward.

Installation

Installation is the reverse order of removal, while observing the following

1. Press threaded pins into expanding clips.

Location: In bumper -arrows-.

Scheme 32

1. To remove exterior sensors, remove concerned headlight. See «HEADLIGHTS, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet).
2. To remove interior sensors, open hood.
3. Remove front bumper and detach bumper cover: See «FRONT BUMPER, ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/exterior-body-panels/#bumpers-except-cabriolet__front-bumper-assembly-overview).
4. Unplug connector -1- on sensor. see scheme 80
5. Push both retainer tabs sideways -arrows- and push sensor inward through from outside.

Installation is carried out in the reverse order.

Location: In bumper -arrows-.

Scheme 33

1. Remove rear bumper cover: See «BUMPER COVER (SEDAN), ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/exterior-body-panels/#bumpers-except-cabriolet__bumper-cover-sedan-assembly-overview) or «BUMPER COVER (AVANT), ASSEMBLY OVERVIEW»(/audi/a4/b6-2000-2006/remont/exterior-body-panels/#bumpers-except-cabriolet__bumper-cover-avant-assembly-overview).
2. Unplug connector -1- on sensor. see scheme 82
3. Push both retainer tabs sideways -arrows - and push sensor inward through from outside.

Installation is carried out in the reverse order.

Headlight range control, servicing

1. Disconnect battery Ground strap with ignition switched off.

Note. Steps after re-connecting voltage supply. See BATTERY DISCONNECT PRECAUTIONS .

General layout of automatic headlight vertical aim control

Note. The following list refers to see scheme 83.

1. Headlight beam adjusting motor -V48-/-V49
2. Headlight range control module -J431- Location: Behind glove box on dash panel support Removing and installing. See «HEADLIGHT RANGE CONTROL MODULE -J431-, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/steering-column-switches/#lights-switches-exterior-except-cabriolet) .
3. Vehicle level sensor, RL-G76- On rear left control arm Removing and installing: See «SUSPENSION - REAR»(/audi/a4/b6-2000-2006/remont/suspension-rear/#suspension-rear) .
4. Vehicle level sensor, FL -G78- On front left track control link Removing and installing: See «SUSPENSION - REAR»(/audi/a4/b6-2000-2006/remont/suspension-rear/#suspension-rear) .

Location: Behind glove box on instrument panel support.

1. Remove glove box: See «GLOVE COMPARTMENT, REMOVING AND INSTALLING»(/audi/a4/b6-2000-2006/remont/mirrors/#interior-equipment-except-cabriolet__glove-compartment-removing-and-installing) .
2. Unplug connector -arrow-.
3. Remove screws -1- and -2- and detach headlight range control module.

Installation is carried out in the reverse order.

TORQUE SPECIFICATION: HEADLIGHT RANGE CONTROL MODULE

See also:
• TELEMATICS
• BATTERY DISCONNECT PRECAUTIONS
• HEADLIGHTS, CHECKING AND ADJUSTING
• REAR LID TRIM, ASSEMBLY OVERVIEW
• READER COIL, REPLACING
• SWITCHES IN CENTER CONSOLE, REMOVING AND INSTALLING
• LUGGAGE COMPARTMENT SIDE TRIM, ASSEMBLY OVERVIEW
• SIDE LUGGAGE COMPARTMENT TRIM, ASSEMBLY OVERVIEW
• DRIVER-SIDE STORAGE COMPARTMENT (WITH AND WITHOUT KNEE BOLSTER), ASSEMBLY OVERVIEW
• REAR SHELF, ASSEMBLY OVERVIEW
• FRONT BUMPER, ASSEMBLY OVERVIEW
• BUMPER COVER (SEDAN), ASSEMBLY OVERVIEW
• BUMPER COVER (AVANT), ASSEMBLY OVERVIEW
• SUSPENSION - REAR
• GLOVE COMPARTMENT, REMOVING AND INSTALLING
• LIGHT BULB FOR TURN SIGNAL/PARKING LIGHT, REPLACING
• IGNITOR FOR GAS-DISCHARGE LAMPS -N195-, REMOVING AND INSTALLING
• BULB FOR DIPPED BEAM (HIGH INTENSITY GAS DISCHARGE (XENON) HEADLIGHTS), REPLACING
• HEADLIGHTS, ADJUSTING
• HEADLIGHTS, SERVICING
• INSTALLING
• FOG LIGHTS, ADJUSTING
• STEERING COLUMN SWITCH MODULE (SCSM), DISASSEMBLING
• TERMINAL ASSIGNMENT AT STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE -J527- (FRONT)
• LOCATION FOR PARKING AID BUTTON -E266
• WARNING BUZZER FOR PARKING -H15- (AVANT), REMOVING AND INSTALLING