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