Diagnostic Aids

GF00.19-P-0001-03LE Overall Network (GVN) Block Diagram
- MODEL 216.3 up to 31.8.10, 221.0 /1 up to 31.5.09 as of Model Year 2009 /AEJ 08






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)
N2/13 WSS control unit (weight sensing system) (model 221 up to 31.8.08 with code (494) USA version)
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
N22/6 Rear control unit (model 216)
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)
N62 PTS control unit (with code (220) PARKTRONIC)
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
N88 TPM [RDK] control unit (up to 31.5.09 with code (475) Tire pressure monitor (Premium), Siemens company as of 1.6.09 with code (475) Tire pressure monitor (Premium), Schrader company)
N93 Central gateway control unit
N110 Weight sensing system control unit (WSS) (model 216 with code (494) USA version, model 221 as of 1.9.08 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
A13 Electric parking brake control unit
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)
A76 Left front reversible emergency tensioning retractor (model 221)
A76/1 Right front reversible emergency tensioning retractor (model 221)
A80 Intelligent servo module for DIRECT SELECT
A86/1b1 Front bumper, outer left radar sensor (with code (233) DISTRONIC PLUS)
A86/1b2 Front bumper inner left radar sensor (with code (233) DISTRONIC PLUS)
A86/1b3 Front bumper inner right radar sensor (with code (233) DISTRONIC PLUS)
A86/1b4 Front bumper, outer right radar sensor (with code (233) DISTRONIC PLUS)
A86/2b1 Rear bumper, outer right radar sensor (with code (233) DISTRONIC PLUS)
A86/2b2 Rear bumper, inner right radar sensor (with code (233) DISTRONIC PLUS)
A86/2b3 Rear bumper, inner left radar sensor (with code (233) DISTRONIC PLUS)
A86/2b4 Rear bumper, outer left radar sensor (with code (233) DISTRONIC PLUS)
A89 DTR controller unit (with code (219) Distronic (DTR) or code (233) Distronic Plus)
A90/1 TV combination tuner (analog/ digital) (for code (863) Digital/ analog TV tuner)
B24/15 Yaw rate, lateral and longitudinal acceleration sensor
E1n1 Xenon headlamp control unit (on model 221 with code (615) Bi- xenon headlamp unit with integrated curve illumination or code (616) Xenon headlamp unit with asymmetrical integrated curve illumination, model 216)
E2n1 Xenon headlamp control unit (on model 221 with code (615) Bi- xenon headlamp unit with integrated curve illumination or code (616) Xenon headlamp unit with asymmetrical integrated curve illumination, model 216)
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)
N15/3 EGS control unit (with transmission 722.6)
N22/4 Rear air conditioning control unit (model 221 with code (582) Rear air conditioner)
N41/3 Voice control system (VCS) (up to 31.5.09 with code (813) Voice control system (VCS))
N47-5 ESP control unit
N51 AIRmatic with ADS control unit (Model 221 without code (487) Active Body Control (ABC), model 216.3 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))
N62/1 Radar sensors control unit (SGR) (with code (233) DISTRONIC PLUS, code (234) Blind Spot Assist or code (239) Adaptive Cruise Control Plus Light)
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 N80 Steering column module
N87/3 Digital Audio Broadcasting control unit (with code (537) Digital radio)
N87/5 SDAR control unit (with code (536) SIRIUS satellite radio)
N93 Central gateway control unit
N93/1 Audio tuner control unit
N101 Night View Assist control unit (for code (610) Night View Assist)
N118 Fuel pump control unit
N123/1 UPCI control unit (universal portable cell phone interface) (up to 31.5.09 with code (386) Preinstallation for portable cell phone, UPCI system or code (389) Mobile phone preinstallation with universal interface USA/Canada)
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)
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 H Vehicle dynamics CAN
CAN S Sensor CAN
MOST Media Oriented System Transport