General Electrical System - Service Techniques: Overview BMW X5 M E70 рестайлинг

Scheme 253

ALPHANUMERICAL OVERVIEW OF ABBREVIATED DESIGNATIONS

The WDS...DVD (Wiring Diagram System) alphanumerically lists the abbreviated designations from the overview "Component... and signal information".

Abbreviated designations are alphabetically sorted in the following groups

1. A Control units, modules
2. B Sensors, electric converters
3. D Diagnosis interfaces
4. E Lights, electric heating equipment
5. F Fuses
6. G Power supply, gas generators
7. H Acoustic and visual warning systems
8. I Components from BMW suppliers
9. K Relays
10. L Coils
11. M Electric motors, drives
12. N Amplifiers, regulators, control units
13. P Display instruments
14. R Resistors, potentiometers
15. S Switches, buttons
16. T Ignition coils
17. U Radio systems, suppressor filters
18. V Semiconductors, diodes
19. W Aerials, screening
20. X Connectors Connectors are not listed in this glossary.
21. Y Electromechanical components
22. Z Blocking circuits, suppressor filters

Subject to change.

Scheme 254

BRIEF DESCRIPTION OF COMPONENTS

The following components deliver signals for the digital compass

1. Magnetic field sensor > up to 09/2006 The magnetic field sensor is installed in the mirror base. The magnetic field sensor measures the current alignment of the magnetic field. The signal is sent to the control electronics for the compass in the interior mirror. > from 09/2006 The magnetic field sensor is on the PCB in the interior mirror.
2. Control electronics for the compass The interior mirror is electrically connected to the roof control panel (FZD). The control electronics for the compass are integrated into the board for the interior mirror. The signals from the magnetic field sensor are received by the control electronics. The LCD display is activated directly by the control electronics.

The following components are controlled

1. Display in interior mirror > up to 09/2006 The LC display (window) is situated at top right in the interior mirror. The points of the compass are presented digitally on the LCD display (LCD: Liquid Crystal Display). The display is divided into eight compass points. > from 09/2006 The point of the compass is displayed in transparent light technology in the interior mirror as well. The display is likewise situated at top right in the interior mirror. The display is divided into 8 points of the compass.

1. Basic variant on basic version The basic variant of the roof control panel does not have its own control unit. It comprises the following components: Interior light, front Rear interior light (not E93) These two lights are activated via the footwell module.
2. High variant The High variant of the roof control panel has its own control unit. The FZD control unit (FZD: roof control panel). The High version of the roof control panel contains the following components, depending on the equipment fitted and the national version: Interior light, front Reading light, front (for driver's side and passenger side) Rear interior light Reading light, rear (left and right) Switch for sliding/tilting sunroof Microphone for telephone and emergency call Emergency call button Indicator lamp for front-passenger airbag deactivation Ultrasonic interior motion sensor (E70 only)

The roof control panel is available in several colors to match the headliner. Due to the number of equipment specifications, there are a total of 62 variants of the roof control panel (E70: 68; E93: 4).

The following components send input signals to the FZD control unit in the High variant of the roof control panel

1. 3 interior-light switches The interior light and the reading lights are switched on and off via 3 switches.
2. Light switch Switching Terminal R on and setting the light switch to switch position "A" or "2" also switches on the top-light.
3. Sliding/tilting sunroof switch The sliding/tilting sunroof switch is used to open and close the sliding/tilting sunroof and to tilt it upwards.
4. Hall sensors in the sunroof drive The Hall sensors in the sliding/tilting sunroof drive indicate the position of the sliding/tilting sunroof to the FZD control unit (in the roof control panel). > E70, E91 The E70, E91 have 2 drives, each with 2 Hall sensors: 2 Hall sensors report the position of the glass sliding/tilting sunroof and the glass tilting roof (Panorama glass roof) 2 Hall sensors report the position of the sliding visor and the wind deflector. > E91 with Panorama glass sunroof The E91 with Panorama glass sunroof has its own control unit for the Panorama glass sunroof (SHD: sliding/tilting sunroof). The Hall sensors report to the SHD control unit.
5. Wiper/washer system The position of the windscreen wiper switch is reported to the rain-light sensor or rain-light solar sensor via the FZD control unit. The rain-light sensor or rain-light solar sensor is activated by the "automatic wipe" button.
6. Condensation sensor > Only vehicles with IHKA: integrated automatic heating and air-conditioning system The condensation sensor measures the moisture on the windscreen in the vehicle interior. The condensation sensor is able to detect condensation on the windscreen before it becomes visible. The condensation sensor is only active in the automatic program. The condensation sensor draws its power supply from the roof control panel. The roof control panel evaluates the condensation sensor data. The roof control panel sends appropriate data to the IHKA control unit (via the K-CAN). On receiving this data, the IHKA control unit starts the windscreen demisting program.
7. Electrochromic rear-view mirror If a strong light beam hits the electrochromic interior mirror, the electrochromic interior mirror sends an analogue signal to the FZD control unit. The FZD control unit controls the dimming of the electrochromic interior mirror. The electrochromic mirror glass darkens. In addition, the FZD control unit also converts the analogue signal into a CAN message. The CAN message is sent on the K-CAN, triggering the darkening of the electrochromic exterior mirror (optional equipment). The occupants of the vehicle are not dazzled by reflected light beams.
8. Ultrasonic interior motion sensor The ultrasonic interior motion sensor is a sensor for the anti-theft alarm system (DWA). The ultrasonic interior motion sensor is able to detect movements in the vehicle interior via ultrasonic signals. If the anti-theft alarm system is activated and movement is detected in the vehicle interior, an alarm is triggered. > E70 The ultrasonic interior motion sensor is integrated in the FZD control unit. > E81, E87, E90, E92 and E91 without Panorama glass roof The ultrasonic interior motion sensor is integrated in the rear interior light. > E91 with Panorama glass sunroof The ultrasonic interior motion sensor is installed at the FZD control unit.
9. Selector lever or shift lever in the center console If reverse gear is engaged, the electrochromic mirrors will not be dimmed.
10. Power supply from the distributor in the junction box The roof control panel draws its power supply from the distributor in the junction box. > E81, E87, E90, E91 E92 3 positive cables connect the distributor in the junction box to the roof control panel: Terminal 15 Terminal 30 Terminal 30g, not E91 with option 402 "Panorama glass roof" > E93 2 positive cables connect the distributor in the junction box to the roof control panel: Terminal 15 Terminal 30 > E70 3 positive wires lead from the power distributor in the junction box and from the rear power distributor to the roof control panel: Terminal 15 from rear power distributor Terminal 30g with option 402 "Panorama glass roof" from rear power distributor, without option 402 "Panorama glass roof" from power distributor in the junction box, Terminal 30 from power distributor in the junction box The junction box houses a distributor and a control unit. The control unit is called the junction box electronics. The junction box electronics (JBE control unit) is the data interface for the following data buses: K-CAN (body CAN) PT-CAN (powertrain CAN) Diagnosis wire The signals from the F-CAN (Chassis CAN) are simply looped through the junction box. This means that the signals from the F-CAN are not received and processed by the JBE control unit. The F-CAN cables are simply routed through the junction box housing.

The following control units are associated with the FZD control unit (depending on the equipment)

1. CAS: Car Access System The CAS (Car Access System) control unit supplies the terminal status Terminal R ON. The CAS control unit is connected to the FZD control unit via the K-CAN. The CAS control unit supplies the "convenience closing" or "convenience opening" message for the sliding/tilting sunroof. > E93 The CAS control unit is connected to the DWA control unit via the K-CAN (DWA control unit: siren with tilt alarm sensor and integrated DWA software)
2. CA: Comfort Access The CA (Comfort Access) control unit supplies the "convenience closing" or "convenience opening" message for the sliding/tilting sunroof. The request is sent when the outside door handle is pressed for longer than 2 seconds. Comfort Access is connected to the FZD control unit via the K-CAN.
3. DWA: Anti-theft alarm system For the DWA control unit, the FZD control unit is the interface to the K-CAN. The DWA control unit receives messages about the doors and engine hood as well as the boot lid (e.g. closed, open) via the K-CAN. The DWA control unit evaluates the signals from the ultrasonic interior motion sensor. The messages from the DWA are looped through the roof control panel. This means that the cables for the anti theft alarm system are routed through the roof control panel housing. Messages from the DWA control unit are fed via a direct wire to the DWA LED. The DWA control unit is connected to the siren with tilt alarm sensor via the K-bus. > E93 DWA control unit: siren with tilt alarm sensor and integrated DWA software The software for the DWA is integrated in the siren with tilt alarm sensor. > E70 DWA control unit: FZD control unit with integrated DWA software The DWA LED is actuated directly by the FZD.
4. EGS: Electronic transmission control The EGS control unit supplies the "Reverse gear engaged" message for the electrochromic interior mirror (with automatic transmission). Signal path: EGS (electronic transmission control) -> PT-CAN -> Junction box electronics (JBE) in junction box -> K-CAN -> FZD (roof control panel). If reverse gear is engaged, the electrochromic mirrors will not be dimmed.
5. FRM: Footwell module The footwell module (FRM) controls the interior and exterior lighting but not the reading light. The reading light is controlled by the roof control panel. The FRM control unit is connected to the roof control panel via the K-CAN.
6. IHKA: Integrated automatic heating and air-conditioning system The IHKA control unit receives the signals from the condensation sensor via the FZD control unit. The IHKA control unit is connected to the FZD control unit via the K-CAN.
7. KOMBI: Instrument cluster The instrument cluster control unit in the instrument cluster sends messages to the FZD control unit, e.g. regarding the dimming of the instrument lighting. The FZD control unit dims e.g. the LED in the sliding/tilting sunroof switch. The instrument cluster control unit also receives messages from the FZD control unit: e.g. the FZD control unit will send a message to the instrument cluster control unit when the anti-trap circuit on the sliding/tilting sunroof is triggered. The instrument cluster control unit then converts this message to a Check-Control message in the vehicle's system. The instrument cluster control unit is connected to the FZD control unit via the K-CAN.
8. RLS / RLSS: rain-light sensor / rain-light solar sensor The rain-light sensor or rain-light solar sensor is like the condensation sensor in the base of the electrochromic interior mirror. The RLS or RLSS detects water on the windscreen and the ambient brightness. The solar sensor in the RLSS also records the presence of light or heat sources (e.g. direct sunlight), which could affect the climate in the vehicle interior. The signals from the RLS or RLSS are used to control the wiper function and for automatic driving lights control. With the RLSS, the signals from the solar sensor are also used to control the functions of the air conditioning. The RLS or RLSS is a self-diagnosing control unit. The RLS or RLSS is connected by a LIN bus to the roof control panel (LIN: Local Interconnect Network, i.e. local data bus).
9. SZL: Steering Column Switch The SZL control unit sends signals to the FZD control unit, e.g. from the wiper switch. The SZL control unit is on the F-CAN (Chassis CAN). Data is transmitted to the K-CAN via a number of data buses and control units. Signal path: SZL-> F-CAN -> Junction box (merely looped through) -> F-CAN -> DSC (Dynamic Stability Control) -> PT-CAN -> JBE control unit in junction box -> K-CAN -> FZD -> Rain-light sensor or rain-light solar sensor.

In the High variant of the roof control panel, the following components are controlled by the FZD control unit

1. Interior lighting, front The interior lighting includes the interior lights and the reading lights, left and right. Front interior light The light source for the front interior light is a 6 W xenon lamp. Reading light for driver's side and passenger side There is one reading lamp each on the right and on the left. The light source for the reading lamp is a 6 W xenon lamp. LEDs for top-light The top-light comprises 2 orange LEDs.
2. Lighting for the make-up mirrors The lighting for the make-up mirror comes on automatically whenever the sliding visor for the make-up mirror is opened (regardless of whether or not the interior lighting is switched on). There is a make-up mirror on the driver's side and on the passenger side.
3. Rear interior light The rear interior light is activated by the FZD control unit as follows: On the basic variant of the rear interior light, the rear interior lighting is switched on together with the lighting in the front of the vehicle. The rear interior light in the basic variant does not have its own switch. The rear interior light is switched on by the FZD control unit. On the High variant, the signals from the rear interior lighting buttons are sent to the FZD control unit. The FZD control unit activates the required lights. The top-light is activated by the FZD control unit whenever the exterior lights are switched on. > E81, E87, E90, E91, E92 The following variant-specific versions of the rear-compartment interior light are available: Basic variant rear interior light The basic variant, the rear interior light simply provides interior light. Rear interior light on the basic variant with cover for the ultrasonic interior motion sensor On the basic variant with ultrasonic interior motion sensor, the ultrasonic interior motion sensor is fitted in the rear interior light. High variant rear interior light On the High variant, the rear interior light provides both interior lighting and reading lights on the left and right. High variant rear interior light with cover for ultrasonic interior motion sensor On the High variant with ultrasonic interior motion sensor, the rear-compartment interior light features the ultrasonic interior motion sensor in addition to the interior lighting and reading lights. > E70 and E91 with Panorama glass roof The ultrasonic interior motion sensor is located in the FZD (E70) or on the FZD (E91 with Panorama glass roof). > E70 and E91 with Panorama glass roof The E70, E91 has 2 rear interior lights: on the C-pillar left and right.
4. Sliding/tilting sunroof drive > E87, E90, E92 The FZD control unit actuates the sliding/tilting sunroof drive (dependent on the sliding/tilting sunroof switch or central locking system). > E70 The FZD control unit controls 2 drives. One drive operates the two glass roofs (Panorama glass roof), the other the sliding visor and the wind deflector. > E91 On the E91 with Panorama glass roof there is a separate SHD control unit for the 2 drives.
5. Rain-light sensor / rain-light solar sensor The FZD control unit sends important messages for the operation of the wipers to the rain-light sensor or rain-light solar sensor (via the LIN bus, see below in the " «SYSTEM FUNCTIONS»(ref-264882-S31615589602007091900000) " section)
6. Condensation sensor The condensation sensor draws its power supply from the roof control panel.
7. Electrochromic interior mirror and electrochromic exterior mirrors The roof control panel controls the dimming of the electrochromic mirrors as follows: the roof function center control unit converts the analogue signal from the electrochromic interior rear-view mirror into a CAN message for the electrochromic door mirrors.
8. Ultrasonic interior motion sensor > E70, E81, E87, E90, E91, E92 The ultrasonic interior motion sensor draws its power supply from the roof control panel. The ultrasonic interior motion sensor is in the DWA control unit. > E70 The DWA control unit and ultrasonic interior motion sensor are integrated in the roof control panel.
9. 4 microwave sensors > E93 The 4 microwave sensors use microwaves to record movement inside the vehicle interior. A movement is detected if the reflection (echo) of the microwaves changes. The range or sensitivity of the microwave sensors is preset (depending on the vehicle model and the equipment fitted). The microwave sensors are connected to the alarm system control unit by a single-wire bus (K-bus). The DWA control unit is connected to the K-CAN.
10. FBD receiver: Remote control receiver > E81, E87, E93 The FBD receiver for the central locking system is installed in the interior mirror (FBD receiver is the receiver for remote control). In the standard equipment version, the FBD receiver draws its power supply from the power distributor in the junction box. If an FZD control unit is fitted (depending on the equipment variant), power is supplied from the power distributor in the junction box to the FBD receiver by the FZD control unit (wire is merely looped through). > E90, E91, E92 The FBD receiver is located in the aerial amplifier in the headlining above the rear window. Power is supplied from the power distributor in the junction box. > E70 The FBD receiver is installed in the aerial amplifier with aerial diversity in the tailgate. Power is supplied from the rear power distributor.
11. DWA LED The DWA LED is located on the underside of the interior mirror. The DWA LED flashes when the anti-theft alarm system is activated. When an alarm is triggered, the DWA LED lights up. The DWA LED draws its power supply from the roof control panel. The signal from the ultrasonic interior motion sensor for the DWA LED is simply looped through the roof control panel (i.e. the cable for the sensor is routed through the roof control panel). > E70 The FZD directly actuates the DWA LED. > E93 The DWA LED draws its power from power distributor in the junction box. The DWA LED is actuated by the DWA control unit (DWA control unit: siren with tilt alarm sensor and integrated DWA software).
12. Garage-door remote controls The 3 buttons for the garage door opener (also known as "integrated universal remote control") are in the interior mirror. The garage door opener draws its power supply from the roof control panel.

OPERATION

This section describes

1. How to switch the interior lighting on and off
2. How to set the sensitivity of the rain-light sensor or rain-light solar sensor

AGM batteries can be recognized by the black housing and the lack of the so-called "magic eye".

Notes for service staff

When handling AGM batteries, certain special factors must be taken into consideration with regard to battery renewal and installation location.

Scheme 255

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.

The measuring range of the ultrasonic sensors is between approx. 25 centimeters and a maximum of approx. 250 centimeters. A continuous warning tone sounds when the distance is less than about 25 centimeters.

Dirty sensors, moisture, ice and snow can also cause the continuous warning tone to sound.

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.

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.

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"

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 CHART 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.