Distance Systems, Cruise Control (Service Techniques) BMW X5 E70

Scheme 65

INTRODUCTION

Park Distance Control (PDC) is an item of special equipment. Park Distance Control (i.e.: parking aid) assists the driver when he is parking and maneuvering in tight spaces. This means that even small parking spaces can be used. At the same time, parking damage is reduced.

PDC uses ultrasonic sensors to measure the distance to objects within the effective range.

1. > E70 (system supplier Valeo)
2. > E87, E90, E91, E92, E93 (system supplier Bosch)
3. > R56 (system supplier Bosch)

PDC is available in the following versions

1. Option 507: Park Distance Control (PDC), rear
2. Option 508: Park Distance Control (PDC), front and rear

The PDC button in the center console switch cluster is only provided with option 508.

Compared to earlier systems, PDC has the following new features

1. Modified ultrasonic sensor with decoupling element on sensor housing
2. Increased range for ultrasonic sensor: 2.5 meters front and rear
3. Good detection of obstacles while remaining insensitive to echo pulses from the ground

The driver is warned of an object that could cause a collision as follows

1. Acoustic warning via (depends on equipment fitted): > E70 Mid-range loudspeakers with Multimedia Platform (CHAMP), Multi-audio system controller (M-ASK) or Car Communication Computer (CCC) > E87, E90, E91, E92, E93 2 acoustic generators (1 front, 1 rear) with radio without audio system Mid-range loudspeaker with BMW "Professional" radio, multi-audio system controller or Car Communication Computer > R56 1 acoustic generators (rear) with Radio Wave Mid-range loudspeaker with Radio Wave CD, Radio Boost CD or Car Communication Computer
2. Visual warning by PDC image with multi-audio system controller and Car Communication Computer

The visual warning function in particular enables PDC to provide assistance for drivers who are hard of hearing or have restricted mobility.

The visual warning has additional benefits if the noise level inside the vehicle is very high (e.g. loud music).

BRIEF DESCRIPTION OF COMPONENTS

PDC consists of the following components

1. Ultrasonic sensors > E70 8 ultrasonic sensors with option 508: Park Distance Control (PDC), front and rear > E87, E90, E91, E92, E93 4 ultrasonic sensors with option 507: Park Distance Control (PDC), rear 8 ultrasonic sensors with option 508: Park Distance Control (PDC), front and rear > R56 4 ultrasonic sensors with option 507: Park Distance Control (PDC), rear There are 4 ultrasonic sensors in each of the front and rear bumpers. The ultrasonic sensors emit ultrasonic pulses. These ultrasonic pulses are reflected by obstacles (echo pulses). The ultrasonic sensors receive and amplify these echo pulses. The amplified echo pulses are then converted into a digital signal. Each ultrasonic sensor has its own electronics, its own power supply and its own data connection to the PDC control unit.

Note. Cleaning the ultrasonic sensors To make sure the system remains fully operational, keep the ultrasonic sensors clean and free from ice. Do not clean by spraying high-pressure washers directly at the ultrasonic sensors. When cleaning, always maintain a minimum distance of at least 10 centimeters.

Note. Make sure the decoupling element on ultrasonic sensor is correctly located. The respective decoupling element must be correctly located. Otherwise, transmission and reception will be impaired.

1. PDC button > E70, E87, E90, E91, E92, E93 The PDC button is integrated in the center console switch cluster (no control unit). The signal from the PDC button is read by the IHKA (or IHKR/IHR control unit) control unit. In turn, the IHKA control unit sends a signal on the K-CAN. The PDC button is used to manually switch the Park Distance Control system on and off. When the PDC is switched on, the function LED in the PDC button lights up. If a fault develops in the PDC, the function LED in the PDC button flashes.
2. PDC control unit The PDC control unit controls the ultrasonic sensors for transmitting ultrasonic pulses. The PDC control unit also receives the digital signals from the individual ultrasonic sensors. From the individual digital signals, the PDC control unit calculates the minimum distance between the ultrasonic sensor and the object. When an object is detected, an acoustic warning and a visual warning are given. > E70 > E87, E90, E91, E92, E93 > R56

The PDC control unit is connected to various other control units via the bus system

1. RAD2, CHAMP, M-ASK or CCC: BMW "Professional" radio, Multimedia Platform, multi-audio system controller or Car Communication Computer > E70, E87, E90, E91, E92, E93 Depending on the equipment fitted, the audio master emits acoustic PDC warnings via the mid-range loudspeaker.
2. Radio Wave CD, Radio Boost CD or CCC: Radio Wave CD, Radio Boost CD or Car Communication Computer > R56 Depending on the equipment fitted, the audio master emits acoustic PDC warnings via the mid-range loudspeaker.
3. CID: Central Information Display > E70, E87, E90, E91, E92, E93 The visual PDC warnings are given in the Central Information Display (CID). In addition, information regarding a Check-Control message that may be present is shown.
4. KOMBI: Instrument cluster > E70, E87, E90, E91, E92, E93 A current Check-Control message is indicated by a symbol in the LCD display in the instrument cluster. Moreover, the instrument cluster also provides the exterior temperature and the kilometer reading for the PDC control unit. The PDC control unit is then able to correct the calculated distance with a factor corresponding to the outside temperature.
5. KOMBI and CID: Instrument cluster and Central Information Display > R56 The instrument cluster has two section. The instrument cluster itself is in the middle of the dashboard. The auxiliary instrument is on the steering column. The KOMBI and the CID are both control units. These control units are plugged into one another an installed together in the dashboard. All equipment versions are connected to the auxiliary instrument via a K-bus. The auxiliary instrument is the gateway to the K-CAN. A current Check-Control message is indicated by a symbol in the LCD display in the auxiliary instrument. The instrument cluster provides the exterior temperature and the kilometer reading for the PDC control unit. The PDC control unit is then able to correct the calculated distance with a factor corresponding to the outside temperature.
6. EGS: Electronic transmission control On vehicles with automatic transmission, the electronic transmission control (ESG) supplies the signal that reverse gear is engaged. The PDC control unit activates PDC after a short delay (approx. 1 second). This prevents PDC from being unexpectedly activated on vehicles with automatic transmission, fro example when the selector lever is moved from "P" to "N" via "R".
7. DSC: Dynamic Stability Control The DSC control unit supplies the PDC with information about the road speed and distance travelled.
8. FRM: Footwell module On vehicles with manual transmission, the footwell module (FRM) supplies the signal that reverse gear is engaged.
9. CAS: Car access system The CAS control unit supplies the PDC with the terminal status (e.g. terminal 15).
10. AHM: Trailer module The trailer module (AHM) sends a signal indicating whether the vehicle is towing a trailer or if a rear carrier rack is fitted. If a trailer or rear carrier rack is recognized, the acoustic and visual warnings for the rear bumper are deactivated.

SYSTEM FUNCTIONS

PDC incorporates the following functions

1. Acoustic warnings
2. Visual warning with multi-audio system controller and Car Communication Computer
3. Check Control
4. System limits

Acoustic warnings

The acoustic warnings are emitted by

1. > E70 Mid-range loudspeaker with CHAMP, M-ASK or CCC If an object is detected by 2 ultrasonic sensors, the loudspeaker closest to the object is actuated. The mid-range loudspeakers can be actuated. (depending on the model concerned, the mid-range loudspeakers in the left/right front doors or left/right rear doors are actuated, for example) If an object is detected by the central ultrasonic sensors, the mid-range loudspeakers on the left and right-hand sides are actuated together.
2. > E87, E90, E91, E92, E93 2 acoustic generators (1 front, 1 rear) with radio without audio system The PDC control unit directly actuates the acoustic generators (front/rear in vehicle interior). Within the acoustic generator, the control signal is transformed to approx. 48 volts. This voltage excites a piezo ceramic element that together with the resonator (housing) generates a warning tone. Up to 09/2006, the tone is in the frequency range of approximately 1 kHz. From 09/2006 the tone is in the frequency range of approximately 1.5 kHz (front) or 1.0 kHz (rear). Mid-range loudspeaker with RAD 2, M-ASK or CCC If an object is detected by 2 ultrasonic sensors, the loudspeaker closest to the object is actuated. The mid-range loudspeakers can be actuated. (e.g. the mid-range loudspeakers in the front doors, left/right, in the rear shelf, left/right, in the rear doors, left/right, in the rear shelf, left/right or in the rear side trim, left/right are actuated, depending on the vehicle model.) If an object is detected by the central ultrasonic sensors, the mid-range loudspeakers on the left and right-hand sides are actuated together.
3. > R56 1 acoustic generator (rear) with Radio Wave The PDC control unit directly actuates the acoustic generators (in rear of vehicle interior). Within the acoustic generator, the control signal is transformed to approx. 48 volts. This voltage excites a piezo ceramic element that together with the resonator (housing) generates a warning tone. The tone is in the frequency range of approximately 1 kHz. Mid-range loudspeakers with Radio Wave CD, Radio Boost CD or CCC If an object is detected by 2 ultrasonic sensors, the loudspeaker closest to the object is actuated. The mid-range loudspeaker on the left/right can be actuated. If an object is detected by the central ultrasonic sensors, the mid-range loudspeakers on the left and right-hand sides are actuated together.

The distance to the object determines the tone sequence for the acoustic warning (the smaller the distance, the faster the tone sequence).

A distance of less than approx. 25 centimeters is indicated by a continuous tone. The continuous tone is emitted alternately from the front and the rear.

If the vehicle moves away from the object, the warning tone will be cancelled when the distance increases by more than 10 centimeters.

Effective range for acoustic warnings

1. approx. 60 centimeters for the ultrasonic sensors at the two corners of the front bumper
2. approx. 70 centimeters for the two middle ultrasonic sensors in the front bumper
3. approx. 60 centimeters for the ultrasonic sensors at the two corners of the rear bumper
4. approx. 150 centimeters for the two middle ultrasonic sensors in the rear bumper

Optical warning with multimedia platform or multi audio system controller or Car Communication Computer

The visual PDC warnings are given in the Central Information Display (CID). This is subject to the PDC display in the CID being active.

The visual warnings are given earlier than the acoustic warnings.

The effective range is approx. 2.5 meters at the front and rear.

The graphic display is shown on the CID. The PDC control unit supplies the distance between the ultrasonic sensor and the object detected via the K-CAN.

The PDC display on the CID is an overhead view of the vehicle with the effective range of the ultrasonic sensors.

The distance to objects detected is shown in the colors of traffic lights

1. Distance between 200 (250) and 101 centimeters: green
2. Distance between 100 an 51 centimeters: yellow
3. Distance less than 50 centimeters: Red

The PDC display appears as soon as the PDC is switched on (manually or automatically). The PDC display overrides other displays in the CID. When the PDC is switched off again, the previous display automatically appears again in the Central Information Display.

Check Control

If a fault should develop in the PDC, the function LED in the PDC button will flash with a frequency of 2 Hz.

In this situation, PDC cannot be switched on.

At the same time, a Check-Control message is displayed in the following form

1. Symbol in the LCD display in the instrument cluster
2. The following text appears in the status line of the Central Information Display: "PDC failure!" In the menu "BMW Service", the following text can be called up in the submenu "Check-Control messages": "Park Distance Control No acoustic warning available for Park Distance Control PDC. Have the problem checked by BMW Service as soon as possible."

If a fault memory entry is recorded, the kilometer reading and the outside temperature are recorded along with the type of fault.

System limits

During operation, the following system functions, which require explanation, can occur due to the limits of the functional range (for the driver)

1. Under the following conditions, it could happen that the PDC gives a warning, even though there is no obstacle within the effective range: Ultrasonic sensor incorrectly located in its bracket Heavy rainfall Ultrasonic sensors covered in snow Exhaust gases Echo pulses caused by ground, e.g. extremely coarse road surface or high grass Very smooth walls in large, enclosed, rectangular spaces, e.g. in underground car parks (interference from previously reflected echo pulses) Protective cap for trailer coupling ball head incorrectly seated or objects being transported protruding into the effective range of the ultrasonic sensors.
2. Under the following conditions, the PDC may not recognize an obstacle that is present: Objects close to the ground (no reflection) Objects with corners and sharp edges (no reflection) If you drive alongside a wall for more than 3 seconds, the acoustic warning will be deactivated. Here, the distance must be greater than the effective range for the continuous tone (approx. 25 centimeters). As soon as the distance drops below 25 centimeters, the continuous tone will sound again. If the vehicle approaches an object too fast Starting up and moving away too quickly while PDC is starting

CONDITIONS FOR SWITCHING ON AND OFF

PDC is switched on under the following conditions

1. PDC button pressed (PDC switched on manually), option 508 only
2. Reverse gear engaged (PDC switched on automatically)

PDC is switched off under the following conditions

1. Reverse gear disengaged, option 507 only
2. PDC button pressed (PDC switched off manually), option 508 only
3. Ignition switched off (PDC switched off automatically
4. After driving approx. 50 meters
5. After exceeding a speed of 30 km/h

When towing a trailer or driving with a rear carrier rack, the acoustic and visual warnings for the rear bumper are deactivated by the trailer module (AHM).

The trailer or rear carrier rack must be electrically connected.

OPERATION

The visual warning (PDC display) is switched on in the Central Information Display (CID) as follows

1. "Settings (i)" menu
2. "Vehicle settings" menu
3. "PDC" menu
4. Activate "Display on"

JAPANESE NATIONAL VERSION

So long as reverse gear is engaged, an acoustic signal (reversing gong) is given via the acoustic generator or the mid range loudspeaker.

The reversing gong is deactivated immediately if the PDC detects an object in the effective range and emits its own acoustic warning.

Scheme 66

The BMW 1-Series, 3-Series and X5 can be equipped with option 322 "Comfort Access".

This comfort system has been derived from the BMW 7-Series.

From 09/2005, Comfort Access will also be introduced to the BMW 5-Series and BMW 6-Series. The system has been taken from the BMW 3-Series, albeit with a few modifications.

With Comfort Access, an ID transmitter is needed instead of the usual remote control. The ID transmitter also performs standard remote control functions.

Comfort Access can be used to carry out the following functions

1. Passive Entry Opening the vehicle or luggage compartment without actively using the ID transmitter
2. Passive Go Engine start without actively using the ID transmitter
3. Passive Exit Closing the vehicle without actively using the ID transmitter

Comfort Access prevents an ID transmitter being disabled accidentally.

The CAS control unit is the master control unit for all functions carried out via Comfort Access. Vehicles with Comfort Access are fitted with a CA control unit.

New or modified for the E90/E91/E92 compared to E87

1. The detection range of the interior aerials has been modified as a consequence of the different vehicle design.
2. The remote control (FBD) receiver is integrated into the aerial amplifier. (> E87, E93: FBD receiver integrated in interior mirror)

New or modified for the E60, E61, E63, E64

1. The outside door handle electronics is on the reverse of the door handle mounting bracket.
2. The CA control unit is installed in the carrier behind the glove compartment.

The following components are described for Comfort Access

1. Interior and exterior aerials Different aerials are required for communication with the ID transmitter: Interior and exterior aerials The number of aerials depends on the model concerned: INTERIOR AND EXTERIOR AERIALS REFERENCE Interior aerials E60 E61 E63 E64 E70 E87 E90 E91 E92 E93 Front center console x x x x x x x x x x Rear center console x x x x x x x x x x Rear window shelf (parcel shelf) x - x - - - - - - - Back of rear seat - x - - - - - - - - Luggage compartment, middle x - x x - x x x x x Luggage compartment, right - - x x x - - - - - Luggage compartment, left - - - - x - - - - - Luggage compartment, load edge - x - - - - - - - - Exterior aerials E60 E61 E63 E64 E70 E87 E90 E91 E92 E93 Rear bumper, left x - x x - - - - - - Rear bumper, middle - x - - x x x x x x Outside door handle electronics 4 4 2 2 4 2 2 2 2 2 The aerials emit 125 kHz radio signals which are evaluated by the ID transmitter.
2. Outside door handle electronics The number of outside door handle electronic units depends on the model concerned (see table above). The 3 sensors in the outside door handle electronics send the following signals to the CAS control unit and the CA control unit: Unlock: When a hand reaches into the handle recess via capacitive sensor 1 Unlock: When a hand pulls on the outside door handle via tension sensor (redundant to capacitive sensor 1) Locking and deadlocking: On contact with the sensitive area of the door handle via capacitive sensor 2 A built-in aerial also sends radio signals in order to check for an ID transmitter located on the outside of the driver's door or front-passenger door. > E70, E87, E90, E91, E92, E93 The outside door handle electronics are installed in the outside door handle. > E60, E61, E63, E64 The outside door handle electronics are behind the grip recess plate.
3. ID transmitter The ID transmitter evaluates the signals from the aerials. It also sends high-frequency radio signals to the FBD receiver. Inserting the ID transmitter into the insert compartment deactivates all Comfort Access functions.
4. Remote control receiver for remote control services > E64, E87, E93 The remote control receiver is integrated in the interior mirror. > E60, E61, E63, E70, E90, E91, E92 The remote control receiver is integrated into the aerial amplifier. The remote control (FBD) receiver picks up radio signals from the ID transmitter and forwards them to the CAS control unit. The Comfort Access control unit (CA control unit) activates the FBD receiver.
5. CAS control unit The CAS control unit (CAS: Car Access System) is the master control unit for all Comfort Access functions. The CAS control unit is the interface to the START/STOP button and to the insert compartment for the ID transmitter. The electronic steering lock is also activated by the CAS control unit. The CAS control unit is connected with the following components via the K-bus (sub-bus): Outside door handle electronics (number depends on model concerned) Comfort Access control unit (CA control unit) Electronic steering lock When the vehicle is idle, communication may take place on the K-bus without waking up the vehicle.
6. START/STOP button The START/STOP button can be used to switch the terminals in sequence (0, R, 15, R, 0). The engine can be started by depressing the clutch or the brake (manual transmission/automatic transmission) and pressing the START-STOP button.
7. Insert compartment for the ID transmitter/remote control On vehicles without Comfort Access: In order to start the engine, the remote control must be latched in place in the insert compartment. On vehicles with Comfort Access: The remote control must be inserted into the insert compartment if the battery in the ID transmitter is discharged. The engine can then be started up. Inserting the ID transmitter into the insert compartment deactivates Comfort Access.
8. JBE: Junction box electronics > E70, E87, E90, E91, E92, E93 The junction box electronics activates the central locking system. If the CAS control unit approves the unlocking of the vehicle, for example, the doors will be unlocked.
9. KGM and KBM: Body gateway module and body basic module > E60, E61, E63, E64 The body gateway module actuates the central locking in the front doors. The body basic module controls the central locking in the rear doors. If the CAS control unit approves the unlocking of the vehicle, for example, the doors will be unlocked.
10. Comfort Access control unit The Comfort Access control unit (CA control unit) actuates the internal and exterior aerials. An ID transmitter scan is carried out. At the same time, the FBD receiver is activated for any ID transmitters which may respond. > E60, E61, E63, E64 > E70 > E87, E90, E91, E92, E93

Comfort Access is used to implement the following functions

1. Passive Entry via driver's door or front passenger door
2. Passive Entry via boot lid
3. Passive Go
4. Passive Exit
5. Disabling an ID transmitter located inside the vehicle
6. Disabling an opposing command
7. Tamper-proof lock

Passive Entry via doors

The vehicle is unlocked when the outside door handle is gripped or pulled. Condition: The ID transmitter must be located no further than 1.5 m from the aerial in the outside door handle.

Ideally, the user should carry the ID transmitter in a pocket.

First, the user is authenticated (= authenticity check).

The data transferred during the authenticity check is of course encrypted.

If the ID transmitter authenticity check is successful, the user will be granted access to the vehicle. The central locking is unlocked. The door can be opened.

The same principle is applied for the authenticity check for Passive Entry and Passive Go.

Authenticity check using the example of Passive Entry

1. Trigger signal at outside door handle electronics via capacitive sensor 1.
2. Request sent to outside door handle electronics to locate an ID transmitter via the aerials in the outside door handle. All ID transmitters associated with the vehicle and located outside of it are included in the search (low-frequency radio signal at 125 kHz). The search determines whether an ID transmitter associated with the vehicle is located in the operating range of the aerials in the outside door handle.
3. At the same time, the outside door handle electronics send a message to the CAS control unit via the sub bus (K-bus).
4. All ID transmitters located register with the CAS control unit by sending a radio signal via the FBD receiver (high-frequency radio signal, country-specific, e.g. 868 MHz).
5. The CAS control unit decides which of the registered ID transmitters will be used for the subsequent authenticity check.
6. This selection is sent to the outside door handle electronics in a message via the K-bus. At the same time, a request is sent to the outside door handle electronics to carry out a selective scan of the ID transmitter concerned.
7. All ID transmitters not picked up in this scan end reception readiness for the communication operation currently in progress.
8. The ID transmitter picked up via the selective scan responds by sending a radio signal to the CAS control unit via the FBD receiver (high-frequency radio signal at 868 MHz).
9. The CAS control unit evaluates the response signal and, if confirmation is valid, authorizes Passive Entry. The vehicle is unlocked. In order that the vehicle can be opened quickly, the door lock is mechanically pretensioned with a spring. The spring ensures that the door unlocks whenever the user pulls the outside door handle to its full extent.
10. The tension sensor is set up with redundancy to the capacitive sensor (e.g. capacitive sensor 1 deactivated due to long-term lack of use). When the tension sensor detects the "Outside door handle pulled" signal, the door is unlocked. The door can be opened by pulling on the outside door handle again.

Passive Entry via the tailgate or front rear window

Comfort Access can be used to open the tailgate without actively using the ID transmitter. Condition: The ID transmitter must be located no further than 1.5 m from the aerial. Ideally, the user should carry the ID transmitter in a pocket.

To open the tailgate, it is necessary to press and hold the boot lid button for approximately 500 ms (top half of BMW logo on the E87, grip on all other vehicles). If an ID transmitter is located in the vicinity of the luggage compartment, the tailgate will open.

If an ID transmitter is located inside the luggage compartment when the boot lid is closed (and there are no authorized ID sensors outside the vehicle), the boot lid will open up again.

The user's attention is drawn to the anti-theft alarm as follows

1. Visual signal via turn signal lights
2. Acoustic signal via siren, US version only

1. > E61, 91: rear window

To open the rear window, the rear window button must be pressed for approx. 500 ms (under the rear window wiper arm).

If an ID transmitter is located in the vicinity of the rear of the vehicle, the rear window will open.

If an ID transmitter is located inside the luggage compartment when the rear window is closed (and there are no authorized ID sensors outside the vehicle), the rear window will open again.

The user's attention is drawn to this as follows: Visual signal via indicators and acoustic signal via sirens (on anti theft alarm system).

Passive Go

In order to switch the terminal and/or start up the engine, the ID transmitter must simply be located inside the vehicle ( not necessarily in the insert compartment).

On the following models, the luggage compartment counts as part of the interior: E61, E70, E87, E91.

On all other models, it is not possible to start the engine if an ID transmitter is detected in the luggage compartment.

In principle, the authenticity check required is the same as that for Passive Entry (except that it is run via the interior aerials).

If there are no ID transmitters inside the vehicle when the START-STOP button is pressed: Check-Control message on instrument cluster.

Press the START/STOP button to switch the terminals. The terminal switching sequence is as follows: 0 -> terminal R -> terminal 15 -> terminal R -> 0.

The START/STOP button must be pressed for approximately 500 ms in order to start up the engine. The clutch pedal or brake pedal (manual transmission or automatic transmission respectively) must be depressed at the same time.

The engine may be started up in any terminal position.

Once the engine has been switched off, it may be restarted within 5 seconds even if no ID transmitter is detected inside the vehicle (i.e. no valid drive authorization). This safety measure is required for possible emergencies.

Passive Exit

The sensitive area on the outside door handle must be touched (depends on model concerned) for the vehicle to be locked and then secured. Your hand must touch the middle of the sensitive area for at least 1 second. If the locking area is touched for approx. 3 seconds, auto-remote closing will start. The side windows and sliding/tilting sunroof or Panorama glass sunroof on the E61/E91 then close. On the E64, the convertible top closes. If applicable, the exterior mirrors are folded in.

Auto-remote opening via the outside door handle is not possible.

Terminal R is deactivated when the outside door handle is locked.

Terminal 15 is not deactivated when the vehicle is locked. A Check-Control message appears as a warning when the driver's door is opened with terminal 15 ON.

Special feature: Comfort Access allows the vehicle to be locked while the engine is running.

1. > E93

Note. No convenience closing of the hardtop via the exterior door handle electronics. It is not possible to close the hardtop via the exterior door handle electronics. Convenience closing is performed at the lock cylinder.

Disabling an ID transmitter located inside the vehicle

When the vehicle is closed via the outside door handle, any ID transmitter inside the vehicle will be detected.

This ID transmitter is disabled for all Comfort Access functions. However, it is still possible to access the luggage compartment. The ID transmitter is reactivated when the vehicle is unlocked again.

Disabling an opposing command

When the vehicle is unlocked via the outside door handle, it cannot be locked again for approx. 2 seconds.

Similarly, when the vehicle is locked via the outside door handle, it cannot be unlocked again for approximately 2 seconds.

This allows the user to pull on the outside door handle to check that the vehicle is actually locked.

Tamper-proof lock

The vehicle may only be locked and unlocked consecutively a maximum of 8 times. After this, the tamper-proof lock is activated.

Operation is disabled for 10 seconds. The tamper-proof lock is deactivated completely after 5 minutes. Once again, the vehicle may then only be locked and unlocked consecutively a maximum of 8 times.

Almost all functions of the Car and Key Memory are programmed inside the vehicle itself (please refer to the "Personal profile" section of Owner's Handbook: individual settings for a maximum of 3 remote control units via the display in the instrument cluster or via the Central Information Display)

NATIONAL VERSIONS

The following details are available with regard to national versions

1. > E93

Convenience functions performed using the remote control or ID transmitter depend on the national version concerned.

Conditions for operating Comfort Access (option 322) with the remote control or ID transmitter

OPERATING COMFORT ACCESS REFERENCE