Diagnostic Aids

GF00.19-P-0001-03LEA Overall Network (GVN) Block Diagram







A6n1 STH control unit (model 216 with code (228) Stationary heater), STH or HB [ZUH] control unit (model 221 with code (228) Stationary heater)
A98 Panoramic sliding roof control module (model 221.1 with code (413) Panoramic glass sunroof with top sliding sunroof )
M40 Multicontour seat pneumatic pump (with code (409) Left/right front multicontour seats)
M40/1 Pneumatic pump for dynamic seat control (with code (432) Left and right dynamic multicontour seat)
N10/1 Front SAM control unit with fuse and relay module
N10/2 Rear SAM control unit with fuse and relay module
N22/1 AAC [KLA] control unit
N25/6 Rear seat control unit (Model 221 with code (223) Rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints or code (402) Rear comfort seats including seat heating and seat ventilation or with code (872) Electric seat heater for left and right rear seat)
N26/9 Special vehicle multifunction control unit (MSS) (Model 221 with code (965) Electrical equipment for rental cars)
N26/14 Special vehicle multifunction control unit (SVMCU [MSS]) (Model 221.1 with code (Z07) Top protection, code (Z21) Fire extinguishing system, code (Z22) Panic alarm system (PAS [GAS]) or code (Z25) Emergency fresh air system incl. device carrier plate)
N28/1 Trailer recognition control unit (model 221 with code (550) Trailer hitch)
N32/1 Left front seat control unit
N32/2 Right front seat control unit
N32/15 Left front multicontour backrest control unit (with code (409) Left/ right front multicontour seats)
N32/16 Right front multicontour backrest control unit (with code (409) Left/ right front multicontour seats)
N32/19 Left front dynamic seat control unit (with code (432) Left and right dynamic multicontour seat)
N32/20 Left rear multicontour backrest control unit (model 221 with code (406) Rear multicontour seat)
N32/21 Right rear multicontour backrest control unit (model 221 with code (406) Rear multicontour seat)
N32/22 Right front dynamic seat control unit (with code (432) Left and right dynamic multicontour seat)
N66/2 Reversing camera control unit (with code (218) Reversing camera and code (498) Japan version)
N69/1 Left door control unit (model 216), Left front door control unit (model 221)
N69/2 Right door control unit (model 216), Right front door control unit (model 221)
N69/3 Left rear door control unit (model 221)
N69/4 Right rear door control unit (model 221)
N69/5 Keyless-Go control unit (with code (889) Keyless-Go)
N70 Overhead control panel control unit
N72/1 Upper control panel control unit
N73 EZS control unit
N93 Central gateway control unit
N110 WSS (Weight Sensing System) control unit (with code (494) USA version)
N121 TLC [HDS] control unit (model 221 with code (881) remote trunk closing (RTC), model 216)
CAN B Interior CAN
CAN D Diagnostic CAN
CAN E Chassis CAN
CAN F Central CAN
CAN G Front end CAN







A1 Instrument cluster
A2/69 Digital sound processor (for model 221 with code (811) Advanced sound system)
A13 Electric parking brake control unit
A9/5 Electric refrigerant compressor (Model 221.095/195)
A40/3 COMAND control unit
A40/4 DVD player (model 221 with code (864) Rear Entertainment System)
A40/5 Left rear display (model 221 with code (864) Rear entertainment system)
A40/6 Right rear display (model 221 with code (864) Rear entertainment system)
A40/8 COMAND display (without (867) SPLITVIEW)
A40/9 Front central operating unit
A40/10 SPLITVIEW display (with code (867) SPLITVIEW)
A80 Intelligent servo module for DIRECT SELECT
A90/1 TV combination tuner (analog/ digital) (for code (863) Digital/ analog TV tuner)
E1n1 Xenon headlamp control unit
E2n1 Xenon headlamp control unit
N3/9 CDI control unit (model 221 with diesel engine)
N3/10 ME-SFI [ME] control unit (with gasoline engine)
N15/3 EGS control unit (with transmission 722.6)
N22/4 Rear air conditioning control unit (model 221 with code (582) Rear air conditioner)
N37/5 Left NOx sensor control unit (model 221 with 276.9, with engine with stratified-charge mode)
N37/6 Right NOx sensor control unit (model 221 with 276.9, with engine with stratified-charge mode)
N37/7 NOx sensor control unit downstream of diesel particulate filter (model 221 with engine 642.862/868 and code (U42) BlueTEC (SCR) diesel exhaust treatment)
N37/8 NOx sensor control unit downstream of SCR catalytic converter (model 221 with engine 642.862/868 and code (U42) BlueTEC (SCR) diesel exhaust treatment)
N72/2 RCP [HBF] control unit (for model 221 with code (406) Rear multicontour seats or code (864) Rear entertainment system)
N73 EZS control unit
N82/2 Battery management system control unit (model 221.095/195)
N83/1 DC/DC converter control unit (model 221.095/195)
N87/3 Digital Audio Broadcasting control unit (with code (537) Digital radio)
N87/5 SDAR control unit (with code (536) SIRIUS satellite radio)
N87/8 High definition tuner control unit (with code (517) HD radio)
N89 Gear oil auxiliary pump control unit (Model 221.095/195, model 221.074/174, model 216.374)
N93 Central gateway control unit
N93/1 Audio tuner control unit
N118 Fuel pump control unit
N118/5 AdBlue� control unit (Model 221 with engine 642.8)
N123/4 Emergency call system control unit (with code (359) TELE AID emergency call system)
N125/1 Media interface control unit (with code (518) Media interface)
N129/1 Power electronics control unit (model 221.095/195)
Y3/8n4 Fully integrated transmission control unit (VGS) (with transmission 722.9)
CAN A Telematics CAN
CAN B Interior CAN
CAN C Drive train CAN
CAN D Diagnostic CAN
CAN E Chassis CAN
CAN F Central CAN
CAN G Front end CAN
CAN I Drive train sensor CAN
MOST Media Oriented System Transport







A40/11 Multifunction camera (with code (238) Active Lane Keeping Assist, code (476) Automatic Lane Recognition, code (513) Speed Limit Assist or code (608) Adaptive Highbeam Assist)
A76 Left front reversible emergency tensioning retractor (model 221)
A76/1 Right front reversible emergency tensioning retractor (model 221)
A86/1b2 Front bumper, inner left radar sensor (with code (233) DISTRONIC PLUS or code (237) Active Blind Spot Assist)
A86/1b3 Front bumper, inner right radar sensor (with code (233) DISTRONIC PLUS or code (237) Active Blind Spot Assist)
A86/2b1 Rear bumper, outer right radar sensor (with code (234) Blind Spot Assist or code (237) Active Blind Spot Assist)
A86/2b4 Rear bumper, outer left radar sensor (with code (234) Blind Spot Assist or code (237) Active Blind Spot Assist)
A89 DTR controller unit (with code (219) Distronic (DTR), code (233) DISTRONIC PLUS or code (237) Active Blind Spot Assist or code (239) Adaptive Cruise Control Plus Light)
A91/1 Electrohydraulic power steering (for model 221.003/026/057/073/ 074/082/083/094/103/126/ 157/173/174/182/183/194, for model 221.054/056/080/084/ 086/087/154/156/180/184/186/ 187 as of 1.6.09, for model 221.070/ 170 as of 1.6.09 up to 31.8.10 without code (487) Active Body Control (ABC), for model 221.070/170 as of 1.9.10, for model 221.071/171 as of 1.6.09 without code (487) Active Body Control (ABC) model 221.095/195, model 216.373/394)
B24/15 Yaw rate, lateral and longitudinal acceleration sensor
N2/7 Restraint systems control unit
N3/9 CDI control unit (model 221 with diesel engine)
N3/10 ME-SFI [ME] control unit (with gasoline engine)
N30/6 Regenerative braking system control unit (model 221.095/195)
N47-5 ESP control unit (model 221 except 221.095/195, model 216)
N51 AIRmatic with ADS control unit (model 221 without code (487) Active Body Control (ABC), without code (Z07) Top protection, model 216 with code (489) AIRmatic (air suspension with continuous adjustment damping))
N51/2 ABC control unit (Model 221 with code (487) Active Body Control (ABC), model 216 without code (489) AIRmatic (air suspension with continuous adjustment damping))
N62 PTS control unit (with code (220) PARKTRONIC or code (230) Exclusive parking assist)
N62/1 Radar sensors control unit (SGR) (Model 221 up to 31.8.10 with code (233) DISTRONIC PLUS or model 221 with code (234) Blind Spot Assist or code (239) Adaptive Cruise Control Plus Light)
N62/2 Video and radar sensor system control unit (with code (233) DISTRONIC PLUS, code (237) Active Blind Spot Assist or code (238) Active Lane Keeping Assist)
N73 EZS control unit
N80 Steering column module
N88 TPM [RDK] control unit (with code (475) Tire pressure monitor (Premium), Schrader company)
N93 Central gateway control unit
N101 Night View Assist control unit (for code (610) Night View Assist)
CAN B Interior CAN
CAN C Drive train CAN
CAN D Diagnostic CAN
CAN E Chassis CAN
CAN F Central CAN
CAN G Front end CAN
CAN H Vehicle dynamics CAN
CAN I Drive train sensor CAN
CAN S Sensor CAN