Electrical systems
The most important technical details are briefly described below.
- Electrical system
- Drive
- Chassis
- Body
Electrical system
The new X5 is equipped with the Electrical System 2000. For the first time ever the FlexRay databus will be introduced in a BMW vehicle. FlexRay is a new bus standard.
The Electrical System 2000 is made up of the following databuses:
- Body CAN K-CAN
- Media Oriented System Transport: MOST
- Powertrain CAN PT-CAN
- FlexRay: Databus with a data transmission rate of 10 Mbit/s
- Chassis CAN F-CAN
- CAN interface for diagnosis: D-CAN (diagnosis-on CAN)
Between the diagnosis socket and the Junction Box Electronics (JBE) there is now a CAN that acts as the diagnosis interface. The D-CAN interface has a higher data transfer rate (500 kbit/s). D-CAN is a twin-wire connection. D-CAN stands for: Diagnosis-on-CAN.
ITEM DESCRIPTION CHART
| Control units on K-CAN (body CAN) databus | |||
|---|---|---|---|
| Item | Description | Item | Description |
| JBE | Junction Box Electronics | CHAMP | Central Head unit And Multimedia Platform |
| M-ASK | Multi-audio system controller | CCC | Car Communication Computer |
| HUD | Head-up display | CID | Central Information Display |
| CON | Controller | FD | Rear seat display |
| RSE | Rear Seat Entertainment | AMPH | HiFi amplifier |
| KOMBI | Instrument cluster | EHC | Electronic height control |
| FLA | Mainbeam assistant | PDC | Park Distance Control |
| VSW | Video switch | CAS | Car Access System |
| CA | Comfort Access | AHM | Trailer module |
| SMBF | Seat module, passenger | ACSM | Crash Safety Module |
| FRM | Footwell module | SMFA | Seat module, driver |
| RFK | Reversing camera | HKL | Tailgate lift |
| RDC | Tyre pressure control, US | RLSS | Rain-light solar sensor |
| FZD | Roof control panel | FKA | Automatic rear seat climate control |
| IHKA | Integrated automatic heating and climate control system | SHZH | Parking heater via LIN |
| 8 | Connection K-Bus with EWS 4th Generation | 9 | Exterior door handle electronics (4x) |
| 10 | Switch block, seat adjustment, front passenger | 11 | Seat occupancy mat, passenger side, US |
| 12 | Step motor controller (2 x) | 13 | Exterior mirror (2x) |
| 14 | Switch block, driver's door | 15 | Switch block, seat adjustment, driver's seat |
| 16 | RDC aerial, US (4 x) | 17 | Siren with integrated tilt alarm sensor |
| 18 | Auxiliary heater, 3rd seating row | 19 | Actuator motor (number is equipment-dependent) |
ITEM DESCRIPTION CHART
| Control units on MOST (Media Oriented System Transport) databus | |||
|---|---|---|---|
| Item | Description | Item | Description |
| CHAMP | Central Headunit And Multimedia Platform | M-ASK | Multi-audio system controller |
| CCC | Car Communication Computer | CDC | CD changer |
| DVDC | DVD changer | AMPT | TOP-HiFi amplifier |
| TCU | Telematics control unit | ULF-SBX | Interface box (telephone) not simultaneously with ULF-SBX-H |
| ULF-SBX-H | Interface box High (USB audio interface) not simultaneously with ULF-SBX |
SDARS | Satellite tuner, US |
| IBOC | Digital tuner, US | DAB | Digital tuner, EURO |
| KHM | Headset module (from 09/2007) | JNAV | Japan navigation system |
| KNAV | Korea navigation system | CNAV | China navigation system |
| VM | Video module | HUD | Head-up display |
| 1 | MOST port | ||
ITEM DESCRIPTION CHART
| Control units on PT-CAN (powertrain CAN) databus | |||
|---|---|---|---|
| Item | Description | Item | Description |
| JBE | Junction Box Electronics | SZL | Only activation wire to switch cluster in middle console |
| DSC | Dynamic Stability Control | AL | Active Steering |
| ARS | Active Roll Stabilization (Dynamic Drive) | EMF | Electromechanical parking brake (parking brake) |
| ICM | > only E71 Integrated Chassis Management |
QMVH | > only E71 Transverse torque distribution, rear axle |
| VTG | Transfer case | EKPS | Fuel pump control (not on US version) |
| VDM | Vertical Dynamic Management | EGS | Electronic transmission control |
| GWS | Gear selector switch | DDE | Digital Diesel Electronics |
| DME | Digital engine electronics | VTC | Valvetronic via local CAN bus |
| 3 | Oil level sensor via bitserial data interface (BSD) | 4 | Electric coolant pump (BSD), spark-ignition engine |
| 5 | Intelligent Battery Sensor (IBS) | 6 | Preglow control device (BSD), diesel engine |
| 7 | Alternator via bitserial data interface (BSD) | ||
ITEM DESCRIPTION CHART
| Control units on FlexRay databus | |||
|---|---|---|---|
| Item | Description | Item | Description |
| VDM | Vertical Dynamic Management | EDCSVL | Shock absorber satellite, front left |
| EDCSVR | Shock absorber satellite, front right | EDCSHL | Shock absorber satellite, rear left |
| EDCSHR | Shock absorber satellite, rear right | ||
ITEM DESCRIPTION CHART
| Control units on F-CAN (chassis CAN) databus | |||
|---|---|---|---|
| Item | Description | Item | Description |
| SZL | Steering Column Switch with steering-angle sensor | DSC | Dynamic Stability Control |
| AL | Active Steering | ARS | Active Roll Stabilization (Dynamic Drive) |
| VDM | Vertical Dynamic Management | ACSM | Crash Safety Module |
| FRM | Footwell module | ||
| 2 | DSC sensor | ||
IMPORTANT:
Automatic terminal cutoff of Terminal 15 from 03/2007.
Terminal 15 is automatically switched off by the signal from the door contact when the driver's door is opened or closed. Terminal 15 is permanently reactivated if the START/STOP button is then pressed. Perform this operation before programming or diagnosing a vehicle.