Overall network (GVN) function - GF00.19-P-0001SK: Notes
MODEL 171.4
Overall network
4 data bus systems are involved in the networking:
- Controller Area Network bus class B (interior compartment) (CANB)
- Controller Area Network bus, class C (engine compartment) (CAN-C)
- Controller Area Network bus class D (diagnosis) (CAN-D)
- Media Oriented System Transport (MOST)
The deployment areas differ as follows:
- MOST is an optical data bus system. Here, data are transferred via a fiber optic cable to the connected information, navigation and communications systems.
- The CAN-B is responsible for data transfers in the vehicle interior. It controls the different systems that can be operated by the driver or the front passenger (e.g. power windows, interior air conditioning). The CAN-B operates at a transfer rate of 83.3 kbits/s.
- The CAN-C is responsible for data transfers in the engine compartment for the propulsion and chassis systems. The CAN-C operates at a transfer rate of 500 kbits/s.
- CAN-D is responsible for the data transfer to STAR DIAGNOSIS. The CAN-D operates at a transfer rate of 500 kbits/s. Depending on the national version, a control unit for navigation or emergency call system is connected additionally.
The MOST interconnects the following control units:
- Radio
- CD player with changer (in glove compartment)
- Radio and navigation unit
- Hands-free system control unit
- Voice control system control unit
- COMAND operating, display and controller unit
- Navigation processor
- SDAR control unit
- Audio gateway control unit
- Universal Portable CTEL Interface (UPCI [UHI]) control unit
The CAN-B interconnects the following control units:
- Instrument cluster
- Radio
- Radio and navigation unit
- COMAND operating, display and controller unit
- Restraint systems control unit
- Driver-side SAM control unit with fuse and relay module
- Rear SAM control unit with fuse and relay module
- HEAT [HAU] control and operating unit
- AAC [KLA] control and operating unit
- Comfort AAC control and operating unit
- Front SH [SIH], AIRSCARF and steering wheel heater control unit
- Driver front seat adjustment control unit with memory
- Front passenger front seat adjustment control unit with memory
- Power soft top control unit
- PTS control unit
- Left door control unit
- Right door control unit
- Overhead control panel control unit
- Upper control panel control unit
- EIS [EZS] control unit
- Steering column module
- Central gateway control unit
- Audio gateway control unit
The CAN-C interconnects the following control units:
- Instrument cluster
- ME-SFI [ME] control unit (located at side next to air filter for engine 271, and on the engine for engine 272 and 113)
- EGS control unit
- Electronic selector lever module control unit
- ESP and BAS control unit
- Headlamp range adjustment control unit
- EIS [EZS] control unit
- Steering column module
- Central gateway control unit
- Fully integrated transmission control (VGS) control unit
CAN-D interconnects the following control units:
- GPS box control unit
- Emergency call system control unit
- STAR DIAGNOSIS (external tester)
Interfaces between the data bus systems (gateways):
- The EIS [EZS] control unit or the central gateway control unit forms the interface between CAN-B, CAN-C, and CAN-D.
Although the instrument cluster and the steering column module are also connected to CAN-B and CAN-C, they do not form any interface. They transmit the data that are needed to the respective data bus depending on what needs to be done.
- The radio or the radio and navigation unit or COMAND operating, display and controller unit or the audio gateway control unit forms the interface between CAN-B and MOST.
| Overall network (GVN), networking of components | GF00.19-P-0001-02SK | |
| Instrument cluster (IC), location / task | A1 | GF54.30-P-3039SK |
| Radio control panel, location/task/design/function | A2 With code (523) MB Audio 20 radio |
GF82.60-P-3115SK |
| With code (494) USA version | GF82.60-P-3115SKV | |
| CD player with changer, location/task/design/ function | A2/6 With code (819) 6-disk CD changer up to 31.5.05 |
GF82.64-P-3113SK |
| With code (819) 6-disk CD changer as of 1.6.05 | GF82.64-P-3113SKA | |
| Radio and navigation unit, location/task/design/function | A2/56 With code (525) MB Audio 50 APS radio |
GF82.61-P-4109SK |
| Hands-free system control unit location/task | A35/1 With code (498) Japan version |
GF82.70-P-4115SKJ |
| Operating-display unit with control unit, location/task/design/function | A40/3 With code (527) COMAND APS with single DVD drive (with navigation system) |
GF82.85-P-3114SK |
| With code (498) Japan version | GF82.85-P-3114SKJ | |
| With code (530) COMAND APS USA (with navigation system) | GF82.85-P-3114SKU | |
| Supplemental restraint systems control unit, location/task/design | N2/7 | GF91.60-P-4018SK |
| ME-SFI [ME] control unit, component description | N3/10 Engine 271: |
GF07.61-P-6000KE |
| On Engine 113 | GF07.61-P-6000SM | |
| On Engine 272 | GF07.61-P-6000V | |
| Driver-side SAM control unit with fuse and relay module, location/task/design | N10/1 | GF54.21-P-4109SK |
| Rear SAM control unit with fuse and relay module, location/task | N10/2 | GF54.21-P-4130SK |
| ETC control unit, location/task | N15/3 With TRANSMISSION 722.6 |
GF27.19-P-4012G |
| Electronic selector lever module control unit, location/task/design | N15/5 With TRANSMISSION 722.6 |
GF27.19-P-5138SK |
| Electronic selector lever module control unit, location/task | N15/5 With transmission 722.9 |
GF27.19-P-5140NK |
| Heating pushbutton control unit, location/task | N18 Without code (580) Automatic air conditioning and without code (581) Comfort automatic air conditioning |
GF83.20-P-2120SK |
| Control and operating unit for automatic air conditioning, location/task | N22 With code (580) Automatic air conditioning |
GF83.40-P-2180SK |
| Comfort automatic air conditioning control and operating unit, location/task | N22/7 with code (581) Comfort automatic air conditioning |
GF83.40-P-2181SK |
| Heated seats/head area ventilation/steering wheel heater control unit, location/task | N25/7 With code (403) Airscarf system or with code (443) Steering wheel heater or with CODE (873) Seat heater left and right front seats |
GF91.30-P-3008SK |
| Left front seat adjustment control unit with memory location/task | N32/1 With code (275) Memory package (driver seat, steering column, mirrors) or with code (242) Electrically adjustable front passenger seat with memory |
GF91.29-P-2106SK |
| Right front seat adjustment control unit, with memory location/task | N32/2 With code (242) Electrically adjustable front passenger seat with memory |
GF91.29-P-2107SK |
| Navigation processor, location/task/design/ function | N41/1 With code (527) COMAND APS with single DVD drive (with navigation system) or With code (530) COMAND APS USA (with navigation system) |
GF82.85-P-3103SK |
| GPS control unit, location/task/design | N41/6 With code (498) Japan version |
GF82.62-P-4111SKJ |
| ESP/BAS control unit, location/task | N47-5 | GF42.45-P-4501SK |
| Vario roof control unit, location/task | N52 | GF77.39-P-3310SK |
| PTS control unit, location/task | N62 With code (220) Parktronic system (PTS) |
GF54.65-P-4100SK |
| Left door control unit, location/task | N69/1 | GF72.29-P-4122SK |
| Right door control unit, location/task | N69/2 | GF72.29-P-4123SK |
| Overhead control panel control unit, location/task/design | N70 | GF82.20-P-4110SK |
| Headlamp leveling system control unit, location/task/design/function | N71 With code (614) Bi-xenon headlamp unit |
GF82.10-P-2102SKX |
| Upper control panel control unit, location / task / design / function | N72/1 | GF54.21-P-4105SK |
| Electronic ignition switch control unit, location/task | N73 | GF80.57-P-4120SK |
| Steering column module, location/task | N80 | GF54.21-P-4125SK |
| Satellite radio, location/task | N87/5 With code (494) USA version up to 31.5.05 |
GF82.85-P-3113SKU |
| With code (536) SIRIUS satellite radio as of 1.6.05 | GF82.85-P-3113SKA | |
| Central gateway control unit, location/task | N93 | GF00.19-P-4100SK |
| Audio gateway control unit, location/task/ design/function | N93/1 With code (498) Japan version or with code (525) MB Audio 50 APS radio or with code (527) COMAND APS with single DVD drive (with navigation system) or With code (530) COMAND APS USA (with navigation system) |
GF82.62-P-3102SK |
| Universal Portable CTEL Interface (UPCI [UHI]) control unit, location/task | N123/1 With code (494) USA version or with code (386) Preinstallation for telephone "Handy", UPCI system or with code (388) Telephone "Handy", UPCI system |
GF82.70-P-5100SK |
| TELE AID control unit/task/design/function | N123/4 With code (359) TELE AID emergency call system |
GF82.95-P-4100SKU |
| VGS control unit, location/task | Y3/8n4 With transmission 722.9 |
GF27.19-P-4013N |