Diagram sections — 34 (108 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ELECTRONIC SUSPENSION EMERGENCY VEHICLE SYSTEMS ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION PASSIVE RESTRAINTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 3) for Mercedes-Benz S550 2008 List of elements for Automatic A/C Wiring Diagram (1 of 3) for Mercedes-Benz S550 2008: 29 +5v 58d Aac (kla) control unit Can-b h Can-b l Computer data lines system Front center air outlet potentiometer Front sam control module w/ fuse & relay module Fuse 15a Fuse 40a Hot at all times Klb 12v Klb data Klb gnd Left side air outlet potentiometer Lin 12v Lin data Lin gnd Lin-bus Mr7 Mr9 Pnk Rear center air outlet potentiometer Red Refrigerant pressure sensor Right side air outlet potentiometer Sig W17 W34 Automatic A/C Wiring Diagram (2 of 3) for Mercedes-Benz S550 2008 List of elements for Automatic A/C Wiring Diagram (2 of 3) for Mercedes-Benz S550 2008: 29 (if equipped) a/c water valve (right rear of engine compt) a/c multi-function sensor A/c compressor A/c recirculation unit A/c sun sensor Air conditioning connector Blower motor Blower regulator Can-e h Can-e l Computer data lines Computer data lines system Coolant temperature sensor (front of engine) Egs Electric suction fan engine & a/c w/ integrated control Engine controls system Heated windshield control module (w/special protection) Left b-pillar air distribution actuator motor Left rear center vent flap actuator motor Me-sfi (me) control unit (right rear of engine compt) Pnk Red Right b-pillar air distribution actuator motor Right rear center vent flap actuator motor System W/ rear a/c W/o rear a/c W15 W2 (right side of engine compt) Automatic A/C Wiring Diagram (3 of 3) for Mercedes-Benz S550 2008 List of elements for Automatic A/C Wiring Diagram (3 of 3) for Mercedes-Benz S550 2008: 30 (in center console) evaporator temperature sensor Coolant circulation pump (in left rear of engine compt) Early production Engine compartment prefuse box Fresh air/ recirculated air flap actuator motor (right side of hvac unit) Front prefuse Fuse 100a Fuse 150a Hot at all times Late production Left center air flap actuator motor Left defroster vent flap actuator motor (left side of hvac unit) Left footwell flap actuator motor (lower left side of hvac unit) Left footwell temperature sensor Left side outlet flap actuator motor Left side outlet temperature sensor Lower left blending air flap actuator motor Lower right blending air flap actuator motor Non-ventilated interior air in-car temperature cockpit sensor Pnk Red Right center air flap actuator motor Right defroster vent flap actuator motor (center of hvac unit) Right footwell flap actuator motor (lower center of hvac unit) Right footwell temperature sensor Right side outlet flap actuator motor Right side outlet temperature sensor Upper left bending air flap actuator motor Upper right blending air flap actuator motor W3/2 Fresh Air Emergency System Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Fresh Air Emergency System Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 26 (near right taillight) w7/1 15c Buzzer emergency C12 Fresh air system Fresh air system diagnostic interface connector Fresh air system emergency control unit Fresh air system emergency pressure medium reservoir solenoid valve Fuse 5a Hot at all times Irritant gas system solenoid valve Irritant gas system solenoid valve double contact relay Left exhaust air flap motor Left exhaust air flap motor polarity- reversing relay Left exhaust air flap motor polarity-reversing relay Overvoltage protection diode Oxygen cylinder pressure sensor Rear fuse box i Right exhaust air flap motor Right exhaust air flap motor polarity- reversing relay Right exhaust air flap motor polarity-reversing relay Solenoid valve W/ medium reservoir solenoid valve W/o medium reservoir W7/1 (near right taillight) Warning buzzer Fresh Air Emergency System Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Fresh Air Emergency System Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 20 (not used) 58d Emergency vehicle system Fire extinguishing system control module Fire extinguishing system switch Fresh air sensor Fresh air system emergency activate button Fresh air system/fire extinguishing system emergency activate button Fresh air system/fire extinguishing system emergency activate button balance resistor Front sam control module w/ fuse & relay module Mr8 Nca Pas (gas) & special signal system control module Red Solenoid valve Special vehicle multifunction control module (svmcm (mss)) W/ medium reservoir solenoid valve W/o medium reservoir W3/2 Windshield washer fluid pump (right front of engine compt) Rear A/C Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Rear A/C Wiring Diagram for Mercedes-Benz S550 2008: 48 Aac (kla) control unit Can-a h Can-a l Can-b h Can-b l Can-e h Can-e l Computer data lines system Coolant circulation pump Coolant temperature sensor (front of engine) Early production Egs Electric suction fan engine & a/c w/ integrated control Engine compartment prefuse box Engine controls system Front prefuse Front sam control module w/ fuse & relay module Fuse 100a Fuse 150a Fuse 15a Fuse 5a Heated windshield control module (w/ special protection) Hot at all times Late production Left b-pillar air distribution actuator motor Left duovalve Left instrument panel fuse box Left rear center vent flap actuator motor Left rear heater exchanger temperature sensor Lin (+) Lin (-) Lin-data Me-sfi (me) control unit (right rear of engine compt) Pnk Rear a/c control module Rear a/c electronic blower regulator (in rear of center console) Rear blower motor (in rear of center console) Rear evaporator temperature sensor (rear of center console) Rear refrigerant shut-off valve (at left front wheelhouse) Red Right b-pillar air distribution actuator motor Right duovalve Right rear center vent flap actuator motor Right rear heater exchanger temperature sensor W/ rear window defroster W/o rear window defroster W18 W2 (right side of engine compt)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 59 (early production) (late production) (left side of engine compt) esp control module Bav 12v Bav a Bla Can e h Can e l Can h h Can h l Clu 12v Clu m Computer data lines system Df hl m Df hl s Df hr m Df hr s Front axle brake pressure sensor Front axle inlet solenoid valve Front axle switchover solenoid valve Front prefuse (early production) engine compartment prefuse box (late production) Fuse 25a Fuse 40a Fuse 7.5a High pressure & return pump Hot at all times Left front axle solenoid valve (hold) Left front axle solenoid valve (release) Left front pressure sensor Left front wheel speed sensor (at left front wheel) Left instrument panel fuse box Left rear axle solenoid valve (hold) Left rear axle solenoid valve (release) Left rear pressure sensor Left rear wheel speed sensor (at left rear wheel) Ls a Ls1 Ls2 Mp 5v Mp m Mp s Nca Pml 12v Pml a Rear axle inlet solenoid valve Rear axle switchover solenoid valve Red Right front axle solenoid valve (hold) Right front axle solenoid valve (release) Right front pressure sensor Right front wheel speed sensor (at right front wheel) Right rear axle solenoid valve (hold) Right rear axle solenoid valve (release) Right rear pressure sensor Right rear wheel speed sensor (at right rear wheel) Sps (pml) solenoid valve Traction system hydraulic unit Ub s W14/3 Anti-lock Brakes Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 17 Abs ind Bas brake booster Bas release switch Bas solenoid valve Brake fluid warning lamp ind Can-h-h Can-h-l Computer data lines system Esp warning lamp ind Front sam control module w/ fuse & relay module Fuse 7.5a Hot at all times Instrument cluster Power distribution system Rear sam control module w/ fuse & relay module W43 Yaw rate, lateral & longitudinal acceleration sensor
ANTI-THEFT Anti-theft Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Anti-theft Wiring Diagram for Mercedes-Benz S550 2008: 41 +5v 56a r Alarm siren w/ auxiliary battery (at left front wheelhouse) Ata (edw) function indicator Can-b h Can-b l Can-f h Can-f l Computer data lines system Data Driver door infrared sensor Engine hood open/ closed switch (ata) (center front of engine compt) Fan relay module Front sam control module w/ fuse & relay module Fuel filler flap cl motor Fuse 40a Fuse 5a Fuse 7.5a Hd-as Headlights system Horns system Hot at all times Instrument cluster Left front door control module (in left front door) Mr1 Mr6 Nca Pnk/ red Pnk/red Rear sam control module w/ fuse & relay module Red Right instrument panel fuse box Spiegel r Trunk lid contact switch Trunk lid emergency release switch Trunk lid external operation switch Upper control panel control module W15/1 W17/1 (under left rear seat) W34/1 W54 Panic Alarm Wiring Diagram, Early Production (1 of 2) for Mercedes-Benz S550 2008 List of elements for Panic Alarm Wiring Diagram, Early Production (1 of 2) for Mercedes-Benz S550 2008: 24 (+) (-) +12v +5v 15r 58d Authorities peripherals separation point C20 Data + Data - Fuse 30a Ground connector sleeve Hot at all times Interior speaker Left outside mirror microphone Mikro + Mikro - Nca Outside speaker Pas (gas) & special signal system control module Rear fuse box 1 Red Right outside mirror microphone W7/1 (near right taillight) Panic Alarm Wiring Diagram, Early Production (2 of 2) for Mercedes-Benz S550 2008 List of elements for Panic Alarm Wiring Diagram, Early Production (2 of 2) for Mercedes-Benz S550 2008: 15 58d C1 police beacon separation point Fresh air system emergency active button Fresh air system/ fire extinguishing system emergency activate button balance resistor Interior lights system Left knee bolster emergency alarm active button Microphone separation point Nca Overvoltage protection diode Rear fresh air outlet emergency alarm active button Red Right knee bolster emergency alarm active button Special signal system push button control module Special vehicle multi-function control module (svmcm (mss)) W19 Panic Alarm Wiring Diagram, Late Production (1 of 2) for Mercedes-Benz S550 2008 List of elements for Panic Alarm Wiring Diagram, Late Production (1 of 2) for Mercedes-Benz S550 2008: 24 (+) (-) +12v +5v 15r 58d Authorities peripherals separation point C20 Data + Data - Fire extinguishing control module Fuse 30a Hot at all times Interior speaker Left outside mirror microphone Mikro + Mikro - Nca Outside speaker Pas (gas) & special signal system control module Rear fuse box 1 Red Right outside mirror microphone W7/1 (near right taillight) Panic Alarm Wiring Diagram, Late Production (2 of 2) for Mercedes-Benz S550 2008 List of elements for Panic Alarm Wiring Diagram, Late Production (2 of 2) for Mercedes-Benz S550 2008: 15 58d C1 police beacon separation point Fresh air system emergency active button Fresh air system/ fire extinguishing system emergency activate button balance resistor Interior lights system Left knee bolster emergency alarm active button Microphone separation point Nca Overvoltage protection diode Rear fresh air outlet emergency alarm active button Red Right knee bolster emergency alarm active button Special signal system pushbutton control module Special vehicle multi-function control module (svmcm (mss)) W19
BODY CONTROL MODULES Front SAM Control Module Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Front SAM Control Module Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 46 +12v +5v 11a 12v 58d Air conditioning system Anti-lock brakes system Can-b h Can-b l Can-c h Can-c l Can-e h Can-e l Computer data lines system Data Electronic power steering system Electronic suspension system Engine controls system Exterior lights system Front prefuse Front sam control module w/ fuse & relay module Fuse 100a Fuse 200a Fuse 5a Gnd Hot at all times Instrument cluster system Interior lights system Left front door control module (in left front door) Lin-bus Memory systems Mls+ Mls- Mr8 Mr9 Pnk Pnk/red Power distribution system Rear sam control module circuit Red Seats system Shift interlock system Starting/charging system Transmissions system W34 Wiper/washer system Front SAM Control Module Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Front SAM Control Module Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 52 +12v 49a r 49al 55r 56a r 56al 56d 56d r 57 l 57 r Air conditioning system Austemp+ Austemp- C60 C61 C62 C63 C64 C65 C66 Can-e h Can-e l Computer data lines system Cruise control system Data Electronic power steering system Electronic suspension system Engine controls system Exterior lights system Front prefuse Front sam control module w/ fuse & relay module Fuse 20a Gnd Headlights system Horns system Hot at all times Instrument cluster system Mr1 Mr2 Mr3 Mr5 Mr6 Mr7 Navigation system Pnk/red Power distribution system Red Sig Spiegel r W34 Warning systems Wiper/washer system Rear SAM Control Module Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Rear SAM Control Module Wiring Diagram for Mercedes-Benz S550 2008: 51 (under left rear seat) w17/1 3 bl Anti-theft system Bi l Bi r Bsl l Bsl r Can-b h Can-b l Cellular phones system Computer data lines system Defogger system Engine controls system Exterior lights Exterior lights system Front sam control module w/ fuse & relay module Fuse 150a Fuse 200a Gk l Gk r Hd as Headlights system Hot at all times Hs + Hs - Hs 1 Hs 2 I10 Instrument cluster & cellular phones systems Instrument cluster system Interior lights system Kzl l Memory systems Navigation system Nsl l Nsl r Passive restraint system Pnk/red Power distribution system Power windows system Rear sam control module w/ fuse & relay module Red Rfl l Seats system Shift interlock system Sig Sound systems Trunk, tailgate, fuel doors system Volume control intermediate connector (w/ dvd) W54/3 Warning systems
COMPUTER DATA LINES Data Link Connector Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Data Link Connector Wiring Diagram for Mercedes-Benz S550 2008: 23 Can-b h Can-b l Can-c h Can-c l Can-d h Can-d l Can-e h Can-e l Can-f h Can-f l Can-g h Can-g l Central gateway control module Data link connector (under left end of dash) Electric parking brake control unit Emergency call system control unit Front sam control module w/ fuse & relay module Fuse 10a Fuse 7.5a High/low bus circuit Hot at all times Red W34 High/Low Bus Wiring Diagram (1 of 4) for Mercedes-Benz S550 2008 List of elements for High/Low Bus Wiring Diagram (1 of 4) for Mercedes-Benz S550 2008: 23 Can-c h Can-c l Can-f h Can-f l Can-h h Can-h l Central can voltage distributor connector Central gateway control module Comand control unit Drivetrain can voltage distributor connector Dtr control unit (if equipped) (under plate in right front footwell) Early production Electric control unit (vgs) Esp control unit (left side of engine compt) Instrument cluster Intelligent servo module for direct select (if equipped) Late production Me-sfi (me) control module (right rear of engine compt) Night vision assist control unit (if equipped) Radar sensors control unit (sgr) (w/ city assist system) Vehicle dynamics can voltage distributor connector W18 Yaw rate, lateral, longitudinal & acceleration sensor High/Low Bus Wiring Diagram (2 of 4) for Mercedes-Benz S550 2008 List of elements for High/Low Bus Wiring Diagram (2 of 4) for Mercedes-Benz S550 2008: 24 11a Abc control module (left rear of engine compt) Airmatic w/ ads control module (left rear of engine compt) C10 C11 C12 C13 Can-e h Can-e l Central gateway control module Chassis can/cockpit voltage distributor connector Chassis can/ffs (rba) voltage distributor connector Eis (ezs) control unit Esp control module left side of engine compt) Front sam control module w/ fuse & relay module Left front reversible emergency tensioning retractor Me-sfi (me) control module (right rear of engine compt) Radar sensors control unit (sgr) (w/ city assist system) Restraint systems control module Right front reversible emergency tensioning retractor Steering column module (at top of steering column) W/ abc W/ airmatic W15/1 High/Low Bus Wiring Diagram (3 of 4) for Mercedes-Benz S550 2008 List of elements for High/Low Bus Wiring Diagram (3 of 4) for Mercedes-Benz S550 2008: 22 Aac (kla) control unit C10 C11 C12 C13 Can-b h Can-b l Central gateway control module Eis (ezs) control unit Front sam control module w/ fuse & relay module Interior can/cockpit voltage distributor connector Keyless go control unit (if equipped) Left front door control module (in left front door) Left front seat control module Left interior can/ffs (rba) voltage distributor connector Left rear door control module (in left rear door) Left rear multicontour backrest control module (if equipped) Pneumatic pump for dyanamic seat control (w/ dynamic seat ds (fds)) Rear sam control module w/ fuse & relay module Reverse camera control module (if equipped) Right rear multicontour backrest control module (if equipped) Upper control panel control module High/Low Bus Wiring Diagram (4 of 4) for Mercedes-Benz S550 2008 List of elements for High/Low Bus Wiring Diagram (4 of 4) for Mercedes-Benz S550 2008: 28 C10 C11 C12 C13 Can-a h Can-a l Can-b h Can-b l Comand control unit Comand display Front central operating unit Late production early production Overhead control panel control module (center front of roof) Pts control module (if equipped) Rcp (hbf) control module Rear ac control module (if equipped) Rear seats control module Right front door control module (in right front door) Right front seat control module Right interior can/ffs (rba) voltage distributor connector Right rear door control module (in right rear door) Special vehicle multifunction control module (svmcm (mss)) (if equipped) Telematics can voltage distributor connector Tlc (hds) control module (w/ remote trunk locking) Tpm control module (if equipped) W15/1 W19 Wss control unit (weight sensing system)
COOLING FAN Cooling Fan Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Cooling Fan Wiring Diagram for Mercedes-Benz S550 2008: 23 Can-b h Can-b l Can-e h Can-e l Computer data lines system Coolant temperature sensor (front of engine) Early production Egs Electric suction fan engine & a/c w/ integrated control Engine compartment prefuse box Engine controls system Engine coolant circulation pump (right of radiator) Front prefuse Front sam control module w/ fuse & relay module Fuse 100a Fuse 150a Hot at all times Late production Me-sfi (me) control unit (right rear of engine compt) Mr9 Red W2 (right side of engine compt) W3/2
CRUISE CONTROL Cruise Control Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Cruise Control Wiring Diagram for Mercedes-Benz S550 2008: 43 (at top of steering column) steering column module Accel/ set Accelerator pedal sensor (top of accelerator pedal assembly) C135 C142 Can-e h Can-e l Can-h h Can-h l Computer data lines system Control contact Cruise control switch Decel/ set Dtr distance potentiometer Front bumper left inner radar sensor Front bumper left outer radar sensor Front bumper right inner radar sensor Front bumper right outer radar sensor Front sam control module with fuse & relay module Fuse 10a Fuse 7.5a Hot at all times Hot in on or start Me-sfi control module (right rear of engine compt) Off Pwg+ Pwg1-0 Pwg1-1 Pwg2-0 Pwg2-1 Radar sensors control unit (sgr) Rear bumper left inner radar sensor Rear bumper left outer radar sensor Rear bumper right inner radar sensor Rear bumper right outer radar sensor Rear pts warning display Rear sam control module with fuse & relay module Red Resume from memory Throttle valve actuator (center rear of engine) W17/1 (under left rear seat) W34 W7/1 (under left rear seat) Electronic Accelerator/Cruise/Idle Speed Control Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Electronic Accelerator/Cruise/Idle Speed Control Wiring Diagram for Mercedes-Benz S550 2008: 41 58d Automatic child seat recognition airbag off ind lamp C66 Can-b h Can-b l Can-c h Can-c l Can-f h Can-f l Can-h h Can-h l Cockpit switch group Comand display dimmer Comand display swivel left switch Comand display swivel right switch Computer data lines lines system Computer data lines system Distronic (dtr) control unit (under plate in right front footwell) Dtr radar sensor Dtr warning lamp ind Electric control unit Esp off switch Exterior lights system & instrument cluster system Freely programmable button Front central operating unit Front sam control module with fuse & relay module Fuse 7.5a Hazard warning system button Hot at all times Instrument cluster Level adjustment switch Me-sfi (me) control module (right rear of engine compt) Output Pts off switch Red Sig Speed sensor Switch & controls illumination/ night vision assist display dimmer Upper control panel control module W3/1 W34
DEFOGGERS Heated Windshield Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Heated Windshield Wiring Diagram for Mercedes-Benz S550 2008: 15 42v (+) 42v (-) Air conditioning system Fuse 125a Heated windshield Heated windshield control module Hot at all times Left heated side window Lin (+) Lin (-) Lin-data Red Right heated side window W54 W7/1 (near right taillight) Rear Defogger Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Rear Defogger Wiring Diagram for Mercedes-Benz S550 2008: 26 Aac control unit Ambient temperature display temperature sensor (behind left side of front bumper) Can-b h Can-b l Computer data lines system Electrolytic capacitor (rear window noise suppressor) Electronic ignition-starter switch (eis) control module Esp/sps/bas control module (left side of engine compt) Front sam control module w/ fuse & relay module Fuse 200a Fuse 50a Heated rear window Hot at all times Left electrically adjustable & heated exterior mirror Left front door control module (in left front door) Mirror heater Mr7 Nca Overhead control panel control module (center front of roof) Rear sam control module w/ fuse & relay module Rear window defroster relay Rear window defroster switch Red Right electrically adjustable & heated exterior mirror Right front door control module (in right front door) W13 (at left "c" pillar)
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Electronic Power Steering Wiring Diagram for Mercedes-Benz S550 2008: 17 Can h Can l Clock spring contact Combination switch Computer data lines system Cruise control switch Front sam control module fuse & relay module Fuse 10a Gear selector switch direct select Hot at all times Red Steering angle sensor (on steering column) Steering column adjustment switch Steering column module (at top of steering column) Steering wheel gear shift signal processing module Steering wheel heater electronics W34
ELECTRONIC SUSPENSION Active Body Control Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Active Body Control Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 39 Abc control module (left rear of engine compt) Abc front axle valve unit (left side of engine compt) Abc pressure sensor (under right front of vehicle) Abvls Abvrm Abvrv Front sam control module w/ fuse & relay module Fuse 15a Hot w/ quiescent current cutout relay energized Left front abc pressure sensor Left front body acceleration sensor (left side of engine compt) Left front level sensor (at left front wheelwell) Left front suspension strut plunger check valve Left front suspension strut plunger valve Nvlm Nvls Nvlv Nvrm Nvrs Pfbhlm Pfbhls Pfbhlv Pfbvlm Pfbvls Red Right front body acceleration sensor (right side of engine compt) Right front level sensor (right front wheelwell) Right front suspension strut plunger check valve Right front suspension strut plunger valve Sdvs Sdvv Sensor Sig Vaa l Vaa r Vav l Vav r Vvav l W15/1 Active Body Control Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Active Body Control Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 43 Abc control module (left rear of engine compt) Abc lateral acceleration sensor (under front of center console) Abc rear axle valve unit (under center rear of vehicle) Abc suction restrictor valve (left front of engine compt) Abhrm Abhrs Abhrv Can Can-e h Can-e l Computer data lines system Haa l Haa r Hav l Hav r Left rear abc pressure sensor Left rear level sensor Left rear suspension strut plunger check valve Left rear suspension strut plunger valve Nhlm Nhls Nhlv Nhrm Nhrs Nhrv Pfbhlm Pfbhls Pfbhlv Pfbhrm Pfbhrs Pfbhrv Pnk Qbmm Qbms Qbmv Red Right front abc pressure sensor Right rear abc pressure sensor Right rear body acceleration sensor (right side of trunk) Right rear level sensor Right rear suspension strut plunger check valve Right rear suspension strut plunger valve Sig Electronic Suspension Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Electronic Suspension Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 46 (right side of engine compt) w2 Airmatic compressor unit Airmatic w/ ads control module (left rear of engine compt) Can-bh Can-bl Computer data lines system Datalink connector (at upper left footwell) Front prefuse Front sam control w/ fuse & relay module Fuse 200a Fuse 20a Fuse 40a Hot at all times Left front axle damper valve unit (at left front wheel house) Left front body acceleration sensor (left front of engine compt) Left front level sensor (left front wheelwell) Mr1 Mr5 Nca Nhl Nhr Nsp Nvl Nvlm Nvls 1 Nvlv Nvr Nvrm Nvrs 1 Nvrv Red Right front axle damper valve unit (at right front wheel house) Right front body acceleration sensor (right front of engine compt) Right front level sensor (right front wheelwell) Val 1 Val 2 Valv+ Var 1 Var 2 Varv+ Vkps Vkpv W15/1 Zamvl Zasvl Zavvl Electronic Suspension Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Electronic Suspension Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 25 (not used) (under right front of vehicle) level control valve unit Airmatic w/ ads control module (left rear of engine compt) Can-c h Can-c l Central reservoir charge valve Computer data lines system Hal 1 Hal 2 Hal v Har 1 Har 2 Har v Left front Left rear Left rear axle damper valve unit (at left rear wheel house) Leveling valves Nca Nhrm Nhrs 1 Nhrv Rear axle level sensor (under rear center of vehicle) Right front Right rear Right rear axle damper valve unit (at right rear wheel house)
EMERGENCY VEHICLE SYSTEMS Fire Suppression Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Fire Suppression Wiring Diagram for Mercedes-Benz S550 2008: 27 Air conditioning system Authorities peripherals separation point Early production Engine fire extinguishing system temperature sensor Extinguishing agent reservoir pressure monitoring switch 1 Extinguishing agent reservoir pressure monitoring switch 2 Extinguishing agent reservoir squib 1 Extinguishing agent reservoir squib 2 Fire extinguishing Fire extinguishing system control module Fire extinguishing system diagnostic interface Fire extinguishing system warning buzzer Fresh air system/fire extinguishing system emergency activate button Fresh air system/fire extinguishing system emergency activate button balance resistor Fuse 5a Hot at all times Late production Nca Pas (gas) & special signal system control module Rear fire extinguishing system temperature sensor Rear fuse box i Solenoid valve Special vehicle multifunction control module (svmcm (mss)) System switch W/ medium reservoir solenoid valve W/o medium reservoir W7/1 (near right taillight)
ENGINE PERFORMANCE
5.5L 5.5L, Engine Performance Wiring Diagram (1 of 5) for Mercedes-Benz S550 2008 List of elements for 5.5L, Engine Performance Wiring Diagram (1 of 5) for Mercedes-Benz S550 2008: 29 (front of left cylinder bank) left exhaust camshaft hall sensor (front of left cylinder bank) left intake camshaft hall sensor (top right front of engine) pressure sensor Check engine mil indicator Circuit relay Computer data lines system Crankshaft hall sensor Ev 1 Ev 2 Ev 3 Ev 5 Ev 8 Front prefuse Front sam control module w/ fuse & relay module Fuse 200a mr2 Fuse 7.5a Hot at all times Hot film maf sensor (center rear of engine) Instrument cluster Late production Left intake manifold tumble flap position sensor Left knock sensor 2 (under intake manifold) Left o2 sensor upstream twc (kat) (left rear of engine compt) Me-sfi (me) control unit (right rear of engine compt) Red Right intake manifold tumble flap position sensor Right knock sensor 1 (under intake manifold) Sig Throttle valve actuator (on throttle body assembly) 5.5L, Engine Performance Wiring Diagram (2 of 5) for Mercedes-Benz S550 2008 List of elements for 5.5L, Engine Performance Wiring Diagram (2 of 5) for Mercedes-Benz S550 2008: 14 (not used) (top left front of engine) variable intake manifold switchover valve (under left front of vehicle) left o2 sensor downstream twc (kat) (under right front of vehicle) right o2 sensor downstream twc (kat) Ev 4 Ev 6 Ev 7 Intake manifold tumble flap switchover valve Me-sfi (me) control unit (right rear of engine compt) Nca O s kw out Oil level switch Red Starting/ charging system 5.5L, Engine Performance Wiring Diagram (3 of 5) for Mercedes-Benz S550 2008 List of elements for 5.5L, Engine Performance Wiring Diagram (3 of 5) for Mercedes-Benz S550 2008: 19 (top of engine, above each cylinder) fuel injectors Cylinder ignition coil 1 (top right side of engine) Cylinder ignition coil 2 (top right side of engine) Cylinder ignition coil 3 (top right side of engine) Cylinder ignition coil 4 (top right side of engine) Cylinder ignition coil 5 (top left side of engine) Cylinder ignition coil 6 (top left side of engine) Cylinder ignition coil 7 (top left side of engine) Cylinder ignition coil 8 (top left side of engine) Left camshaft intake solenoid Nca Radio interference suppression capacitor 1 Radio interference suppression capacitor 2 Red Right camshaft exhaust solenoid Right camshaft intake solenoid Spark plug W11w1 W11w2 5.5L, Engine Performance Wiring Diagram (4 of 5) for Mercedes-Benz S550 2008 List of elements for 5.5L, Engine Performance Wiring Diagram (4 of 5) for Mercedes-Benz S550 2008: 12 (top front of engine) air pump switchover valve (top front of engine) coolant temperature sensor Accelerator pedal sensor (top of accelerator pedal assembly) Fuel tank pressure sensor (in fuel tank) Heating system shutoff valve Power steering pump pressure regulator valve Red Right exhaust camshaft hall sensor Right intake camshaft hall sensor Right o2 sensor upstream twc (kat) (right rear of engine compt) Sig Three-disk thermostat valve 5.5L, Engine Performance Wiring Diagram (5 of 5) for Mercedes-Benz S550 2008 List of elements for 5.5L, Engine Performance Wiring Diagram (5 of 5) for Mercedes-Benz S550 2008: 36 (-) +5v 87 me1 Aav Activated charcoal filter shutoff valve Air Air pump Can-c h Can-c l Can-e h Can-e l Computer data lines system Crash Egs Ekp Electric suction fan engine & ac w/ integrated control Front sam control module w/ fuse & relay module Fuel pump (under left rear of vehicle) Fuel pump relay module Fuse 7.5a Hot at all times Me-sfi (me) control unit (right rear of engine compt) Nca Purge control valve (left rear of engine compt) Pwg+ Pwg1-0 Pwg1-1 Pwg2-0 Pwg2-1 Rear sam control module w/ fuse & relay module Red Sig Start W11w1 W17/1 (under left rear seat) W34/1
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Backup Lamps Wiring Diagram for Mercedes-Benz S550 2008: 13 Back- up lamp Can-b h Can-b l Can-c h Can-c l Computer data lines system Electric control unit (vgs) (a/t) Left taillamp Rear sam control module w/ fuse & relay module Rfl-l Right taillamp W/ back-up camera W7/1 (near right taillight) Exterior Lamps Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 54 3.bl 49a l 49a r 57 l 57r 58d Backup lamp Bi-r Bsl-l Bsl-r Can-b h Can-b l Can-e h Can-e l Center high mounted stop lamp Computer data lines system Front prefuse Front sam control module w/ fuse & relay module Fuse 200a Hot at all times I10 Kzl-l Kzl-r Left front headlamp unit Left front side marker lamp Left license plate lamp Left taillamp Mr2 Mr4 Mr5 Mr6 Mr9 Nca Nsl-l Nsl-r Rear fog lamp Rear sam control module w/ fuse & relay module Rear side marker lamp Red Rfl-l Right front headlamp unit Right front side marker lamp Right license plate lamp Right taillamp Standing & parking lamp Stop, tail & parking lamp Turn signal lamp W/ backup camera W15/1 W17/1 (under left rear seat) W3/1 W3/2 W54 W7/1 (near right taillight) Exterior Lamps Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 35 Analog clock Can-b h Can-b l Can-e h Can-e l Can-f h Can-f l Can-g h Can-g l Cockpit switch group Combination switch Computer data lines system Electric parking brake control unit Electric parking brake switch Exterior lamp switch Front central operating unit Hazard warning system button Headlamp flasher/ high beam switch Instrument cluster Instrument cluster system Left & right turn signal switch Left turn ind Low beam switch Red Right turn ind Sounder Steering column module (at top of steering column) Sw 1 Sw 3 Sw 4 Sw 6 Upper control panel control module W34 Windshield washer system switch Wipe switch
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Ground Distribution Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 30 Air bag system driver assist, driver side frontal acceleration sensor, restraint systems control module & (wss control unit (weight sensing system) Early production Electric suction fan engine & ac w/ integrated control & airmatic compressor unit (if equipped) Esp control module Instrument cluster, comand display, comand control unit & night vision assist control unit (if equipped) Late production Left front seat control module Left front side marker lamp (usa), right front side marker lamp (usa), ata (edw) hood switch, airmatic w/ads control unit, abs control module, intelligent servo module for direct select, electric control unit (vgs), etc (egs) control module, right front door control module, front cigar lighter (w/ ashtray illumination), chassis can/ffs (rba) voltage distributor connector & telematics can voltage distributor connector Left taillamp, right taillamp, right truck lamp, left truck lamp, pts control module (w/ parktronics) & radar sensors control unit (sgr) (w/ city assist system) Me-sfi (me) control module, alarm signal siren, left front door control module & ground connector sleeve On board electrical system battery Radio interference suppression capacitor 1 & cylinder ignition coils 5-8 Starter battery W10 (at right rear of trunk) W10/4 W11w1 W11w2 W14/3 W15/1 W17 W18 W2 (right side of engine compt) W26 (under front of center console) W26/1 W3/1 W34/1 W43 W45 W7/1 (near right taillight) Wiper park heater, right fanfare horn, right front headlamp unit, right fog lamp, dtr control unit & front prefuse Ground Distribution Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Ground Distribution Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 29 Ac recirculation unit Air pump Coolant circulation pump, left fanfare horn, left front headlamp unit, left fog lamp, slave wiper motor, master wiper motor, wiper park heater, hcs pump & windshield washer fluid pump Early production Heated rear window Hydraulic window lifter limit switch Inner left rear pts ultrasonic sensor, fuel pump (fp), rear sam control module w/ fuse & relay module, rear bumper right inner radar sensor, rear pts warning display, rear bumper left inner radar sensor, pts control module, outer left front pts ultrasonic sensor, outer right front pts ultrasonic sensor, center right front pts ultrasonic sensor, center left front pts ultrasonic sensor, inner left front pts ultrasonic sensor, inner right front pts ultrasonic sensor, front bumper left outer radar sensor, front bumper left inner radar sensor, front bumper right inner radar sensor, front bumper right outer radar sensor, outer right rear pts ultrasonic sensor, inner right rear pts ultrasonic sensor, outer left rear pts ultrasonic sensor, rcp (hbf) control module & rear pts warning display Late production Rear sam control module w/ fuse & relay module & electric parking brake control unit Right front seat control module Right interior can/ffs (rba) voltage distributor connector, right rear door control module, keyless go control unit, right front seat control module, tpm control module & right front reversible emergency tensioning retractor Steering column module, central gateway control module, eis (ezs) control unit, glove compartment lamp, right front footwell lamp, left front footwell lamp, electric parking brake switch, left side air outlet potentiometer, front sam control module w/ fuse & relay module, upper control panel control module, instrument cluster, right side air outlet potentiometer, front center air outlet potentiometer, data link connector & aac (kla) control module Tlc (hds) control module (w/ remote trunk locking), rear seats control module, trunk lid cl (zv) motor, left rear seat belt comfort feature solenoid, right rear seat belt comfort feature solenoid, left trunk lid ambient & warning lamp, right trunk lid ambient & warning lamp, left license plate lamp, right license plate lamp, Trunk lid contact switch, Trunk lid emergency release switch, Trunk lid external operation switch, Trunk lid keyless-go button (if equipped), left rear seat heated cushion (if equipped), left rear backrest heated cushion (if equipped), right rear seat heated cushion (if equipped) & right rear backrest heated cushion (if equipped) W13 (at left "c" pillar) W15 W17/1 (under left rear seat) W19 W26/2 W3/2 W34 W46 (front of engine) W50 (at right front door sill) W54 W54/3 W6 (left side of trunk)
HEADLIGHTS Headlights Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Headlights Wiring Diagram for Mercedes-Benz S550 2008: 58 55 r 56a l 56a r 56d 56d r Bi-xenon lamp Can b h Can b l Can e h Can e l Can-e h Can-e l Can-f h Can-f l Can-g h Can-g l Combination switch Computer data lines system Electric parking brake control unit Electric parking brake switch Exterior lamp switch Fog lamp indicator lamp Front prefuse Front sam control module w/ fuse & relay module Fuse 10a Fuse 200a Headlamp control module (w/ xenon) Headlamp flasher/ high beam switch Headlamp range adjustment motor High beam indicator lamp High beam lamp High beam solenoid (w/ xenon) Hot at all times Instrument cluster Instrument cluster system Interior lights system Left fog lamp Left front headlamp unit Low beam lamp Low beam switch Mr2 Mr4 Mr5 Mr6 Night vision assist button Red Right fog lamp Right front headlamp unit Spiegel r Steering column module (at top of steering column) Sw-1 Sw-3 Sw-4 Sw-6 Upper control panel control module W3/1 W3/2 W34
HORN Horn Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Horn Wiring Diagram for Mercedes-Benz S550 2008: 24 Can-c h Can-c l Computer data lines system Fan relay module Fanfare horns & airbag clock spring contact Fanfare horns pushbutton Front prefuse Front sam control module w/ fuse & relay module Fuse 200a Fuse 52b 15a Hot at all times Hot w/ circuit 15 relay energized Left fanfare horn (behind front bumper) Left multi- function steering wheel pushbutton group Mr1 Nca Red Right fanfare horn (behind front bumper) Right multi- function steering wheel pushbutton group Steering column module (at top of steering column) Steering wheel gear shift signal processing module (if equipped) W3/1 W3/2 W34
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 62 15g 58d Abs mil indicator Air bag indicator & warning lamp Ambient temperature display temperature sensor (behind left side of front bumper) Audible turn signal indicator Austemp + Austemp - Brake fluid warning lamp Can b h Can b l Can f h Can f l Check engine mil indicator Clock + Clock - Computer data lines system Coolant level switch Data 0 + Data 0 - Data 1 + Data 1 - Data 2 + Data 2 - Diag Dtr warning lamp Ect gauge Ect malfunction indicator Electronic speedometer Esp warning lamp Front sam control module w/ fuse & relay module Fuel level & reserve gauge Fuel reserve indicator lamp Fuse 7.5a Gear display Gnd High beam indicator lamp Hot at all times Hot in on or start Instrument cluster Instrument cluster/ comand display additional fan Left fuel level sensor Left turn signal indicator Luefter Mr7 Multi-function display Nca Night vision assist circuit Pnk/red Rear sam control module w/ fuse & relay module Red Right fuel level sensor Right turn signal indicator Seat belt reminder lamp Sig Tachometer Tire pressure monitor warning lamp indicator Transmission mode display W34 W43 W54/3 Warning buzzer Instrument Cluster Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 47 58d Air recirculation button Analog clock Ata(edw) function indicator Automatic child seat recognition airbag off ind lamp Brake fluid indicator switch (left rear of engine compt) Can b h Can b l Can g h Can g l Cockpit switch group Comand display dimmer Computer data lines system Cruise control system Defrost/ heated windshield button Electric parking brake control unit Electric parking brake switch Esp off switch Exterior lamp switch Frb vl Frb vr Heated rear window button Hsk bel Interior lights system Interior lights system computer data lines system Left automatic air conditioning button Left blower button Left comand display swivel switch Left temperature selection button Level adjustment switch Night vision assist button Night vision assist display dimmer switch & controls illumination Off/ residual heat button Overhead control panel circuit Pts off switch Right automatic air conditioning button Right blower button Right comand display swivel switch Right temperature selection button Sig Sth/zuh/ residual heat button Sw 1 Sw 3 Sw 4 Sw 6 Upper control panel module W34 Night Vision Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Night Vision Wiring Diagram for Mercedes-Benz S550 2008: 27 + cam - cam 87f C62 Can-h h Can-h l Computer data lines system Data-0 h Data-0 l Data-1 h Data-1 l Data-2 h Data-2 l Front sam control module w/ fuse & relay module Fuse 5a Ground Hot w/ circuit 87 relay enerziged Instrument cluster Nca Night vision assist camera Night vision assist control unit Red Stk_h Stk_l T-1 h T-1 l W43 Overhead Console Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Overhead Console Wiring Diagram for Mercedes-Benz S550 2008: 53 (under left rear seat) w17/1 (w/ front roller sun blind) 15r 30g 58d Als ser Ambient lamp Automatic dimming mirror Back automatic dimming interior rearview mirror sensor Can b h Can b l Computer data lines system Data Door contact on/off switch Electric parking brake switch Emergency call system control unit Flat wire Forward automatic dimming interior rearview mirror sensor Front dome lamp Front dome lamp switch Front sam control module w/ fuse & relay module Fuse 25a Garage door opener indicator lamp Garage door opener pushbutton 1 Garage door opener pushbutton 2 Garage door opener pushbutton 3 Garage door opener transmitter unit Hot at all times Hs 1 Hs 2 Hs ub Interior lights system Interior rearview mirror unit Left front reading lamp switch Left reading lamp Ll hl Ll hr Mb info & telediagnosis button group Motor + Motor - Nca Overhead control panel control module (center front of roof) Power tops system Rain/light sensor Rear dome lamp switch Rear roller sun blind switch Rear sam control module w/ fuse & relay module Red Right front reading lamp switch Right reading lamp Roof switch Sos pushbutton switch W6 (left side of trunk)
INTERIOR LIGHTS Interior Lights Wiring Diagram (1 of 3) for Mercedes-Benz S550 2008 List of elements for Interior Lights Wiring Diagram (1 of 3) for Mercedes-Benz S550 2008: 47 15r 30g 58d Ais ser Ambient lamp Can-b h Can-b l Computer data lines system Data Exterior lamp switch Exterior lights system Fog lamp ind lamp Frb-vl Frb-vr Fuse 200a Fuse 25a Hot at all times Interior rearview mirror unit Left front footwell lamp Left front vanity mirror illumination Left front vanity mirror illumination switch Left reading lamp Left rear dome lamp Left rear vanity mirror illumination Left trunk lamp Left trunk lid ambient & warning lamp Ll hl Ll hr Nca Overhead control panel control module (center front of roof) Rain/light sensor Rear fog lamp ind lamp Rear sam control module w/ fuse & relay module Red Right front footwell lamp Right front vanity mirror illumination Right front vanity mirror illumination switch Right reading lamp Right rear dome lamp Right rear vanity mirror illumination Right trunk lamp Right trunk lid ambient & warning lamp Roof switch, dome contact on & off sw, dome lamp switch, rear dome lamp switch, left/right front reading lamp switch, front dome lamp Upper control panel control module W17/1 (rear seat under left) W34 W54 Interior Lights Wiring Diagram (2 of 3) for Mercedes-Benz S550 2008 List of elements for Interior Lights Wiring Diagram (2 of 3) for Mercedes-Benz S550 2008: 28 (-) 58d Can-bh Can-bl Computer data lines system Driver power window outside mirror & trunk lid switch group Fuse 40a Hot at all times Left front door control module Left front door entrance & exit lamp Left front door inside handle illumination Left front door lock unit (if equipped) Left front door warning lamp Lf drive lock pawl sw Lf power closing motor Lf rotary tumbler sw Lf safety limit sw Nca Red Right front door control module Right front door entrance & exit lamp Right front door inside handle illumination Right front door warning lamp Right instrument panel fuse box Sig Svs-mot W15/1 W34/1 Interior Lights Wiring Diagram (3 of 3) for Mercedes-Benz S550 2008 List of elements for Interior Lights Wiring Diagram (3 of 3) for Mercedes-Benz S550 2008: 35 57 l 57 r 58d Can-b h Can-b l Computer data lines system Front cigar lighter Front sam control module w/ fuse & relay module Left front headlamp unit Left front seat control module Left rear door control module (in left rear door) Left rear door entrance & exit lamp Left rear door warning lamp Left rear footwell lamp Left rear inside door handle illumination Mr5 Mr6 Nca Rear cigar lighter Red Right front headlamp unit Right front seat control module Right rear door control module (in right rear door) Right rear door entrance & exit lamp Right rear door warning lamp Right rear footwell lamp Right rear inside door handle illumination Standing & parking lamp Stowage compartment illumination W15/1 W17 W18 W19 W3/1 W3/2
MEMORY SYSTEMS Driver"s Memory Seat Wiring Diagram (1 of 4) for Mercedes-Benz S550 2008 List of elements for Driver"s Memory Seat Wiring Diagram (1 of 4) for Mercedes-Benz S550 2008: 19 (not used) 220v Can-a h Can-a l Can-b h Can-b l Computer data lines system Front central operating unit Gnd Left front dynamic seat control module (w/ dynamic seat) left front multicontour backrest control module (w/ multicontour seat) Left front seat massage cushion valve group Lower massage row 1 piezo valve Lower massage row 2 piezo valve Lower massage row 3 piezo valve Lower massage row 4 piezo valve Lower massage row 5 piezo valve Lower massage row 6 piezo valve Nca Upper massage row piezo valve Driver"s Memory Seat Wiring Diagram (2 of 4) for Mercedes-Benz S550 2008 List of elements for Driver"s Memory Seat Wiring Diagram (2 of 4) for Mercedes-Benz S550 2008: 27 Can-b h Can-b l Can-f h Can-f l Central gateway control module Central lumbar cushion piezo valve Central lumbar cushion pressure sensor Computer data lines system Data Flat wire Front sam control module w/ fuse & relay module Left backrest lateral support cushion piezo valve Left backrest lateral support cushion pressure sensor Left front door control module (in left front door) Left front seat backrest cushion valve group Left front seat operation switch group Lower lumbar cushion piezo valve Lower lumbar cushion pressure sensor Memory 1, 2, 3 switch Memory store button switch Nca Right backrest lateral support cushion piezo valve (w/ dynamic seat) Right backrest lateral support cushion pressure sensor (w/ dynamic seat) Shoulder cushion piezo valve Shoulder cushion pressure sensor Upper lumbar cushion piezo valve Upper lumbar cushion pressure sensor Driver"s Memory Seat Wiring Diagram (3 of 4) for Mercedes-Benz S550 2008 List of elements for Driver"s Memory Seat Wiring Diagram (3 of 4) for Mercedes-Benz S550 2008: 18 (at base of left "b" pillar) left front seat belt comfort feature solenoid Can-b h Can-b l Computer data lines system Driver lumbar support regulator control unit (if equipped) Fuse 40a Hot at all times Left front backrest angle adjustment motor Left front head restraint motor Left front seat control module Left front seat cushion fore/aft motor Left front seat cushion inclination motor Left front seat fore/aft adjustment motor Left front seat height adjustment motor Left instrument panel fuse box Red Seats system W18 Driver"s Memory Seat Wiring Diagram (4 of 4) for Mercedes-Benz S550 2008 List of elements for Driver"s Memory Seat Wiring Diagram (4 of 4) for Mercedes-Benz S550 2008: 20 (under left rear seat) w17/1 Can-a h Can-a l Can-b h Can-b l Comand control unit Comand display Computer data lines system Fuse 150a Hot w/ quiescent current cutout relay energized Left front seat control module Left rear footwell lamp Lumbar pump (w/ lumbar support) Multicontour seat pneumatic pump (w/ multicontour seat) (left side of trunk) pneumatic pump for dynamic seat control (w/ dynamic seat) Nca Rear sam control module w/ fuse & relay module Red Seats system W/ lumbar support W/ multicontour seat & dynamic seat Memory Mirrors Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Memory Mirrors Wiring Diagram for Mercedes-Benz S550 2008: 38 (in left front door) (in right front door) right front door control module +5v Ambient lamp Automatic dimming mirror Bsm bereit Bsm warn Can-b h Can-b l Computer data lines system Data Driver power window outside mirror & trunklid switch group Flat wire Fold-in/ fold-out switch Fuse 40a Hot at all times Left blind spot assistant indicator lamp (if equipped) Left blind spot assistant warning indicator (if equipped) Left electrically adjustable & heated exterior mirror Left exterior mirror turn signal lamp Left front door control module Left front seat operation switch group Left/right outside mirror adjustment selection switch Memory 1, 2, 3 switch Memory store button switch Mirror adjustment rocker switch Mirror fold-in motor Mirror heater Mirror in/out adjust- ment Mirror up/down adjust- ment Motor Nca Red Right electrically adjustable & heated exterior mirror Right exterior mirror turn signal lamp Right instrument panel fuse box W15/1 W34/1 Memory Rear Seat Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Memory Rear Seat Wiring Diagram for Mercedes-Benz S550 2008: 38 (+) C143 C144 Can-b h Can-b l Computer data lines system Data Flat wire Fuse 25a Hot at all times Hs lv+ Hs lv- Hs nv+ Hs nv- Left rear door control module Left rear head restraint inclination adjustment motor Left rear seat belt comfort feature solenoid (under left rear window shelf) Left rear seat cushion inclination adjustment motor Left rear seat fore/aft adjustment motor Left rear seat operation switch group Memory 1, 2, 3 switch Memory store button switch Mot-l Mot-lv Mot-nv Pnk/red Rear sam control module w/ fuse & relay module Rear seats control module Red Right rear door control module (in right rear door) Right rear head restraint inclination adjustment motor Right rear seat belt comfort feature solenoid Right rear seat cushion inclination adjustment motor Right rear seat operation switch group Right seat fore/aft adjustment motor (under right rear seat) Seats system Sibl W54 Passenger"s Memory Seat Wiring Diagram (1 of 4) for Mercedes-Benz S550 2008 List of elements for Passenger"s Memory Seat Wiring Diagram (1 of 4) for Mercedes-Benz S550 2008: 21 (not used) 220v Can-a h Can-a l Can-b h Can-b l Comand control unit Comand display Computer data lines system Gnd Lower massage row 1 piezo valve Lower massage row 2 piezo valve Lower massage row 3 piezo valve Lower massage row 4 piezo valve Lower massage row 5 piezo valve Lower massage row 6 piezo valve Nca Red Right front dynamic seat control module (w/ dynamic seat) right front multicontour backrest control module (w/ multicontour seat) Right front seat massage cushion valve group Upper massage row piezo valve Passenger"s Memory Seat Wiring Diagram (2 of 4) for Mercedes-Benz S550 2008 List of elements for Passenger"s Memory Seat Wiring Diagram (2 of 4) for Mercedes-Benz S550 2008: 26 (under left rear seat) w17/1 Can-b h Can-b l Central lumbar cushion piezo valve Central lumbar cushion pressure sensor Computer data lines system Fuse 150a Hot w/ quiescent current cutout relay energized Left backrest lateral support cushion piezo valve Left backrest lateral support cushion pressure sensor Lower lumbar cushion piezo valve Lower lumbar cushion pressure sensor Lumbar pump (w/ lumbar support) Multicontour seat pneumatic pump (w/ multicontour seat) (left side of trunk) pneumatic pump for dynamic seat control (w/ dynamic seat) Nca Rear sam control module w/ fuse & relay module Red Right backrest lateral support cushion piezo valve (w/ dynamic seat) Right backrest lateral support cushion pressure sensor (w/ dynamic seat) Right front seat backrest cushion valve group Shoulder cushion piezo valve Shoulder cushion pressure sensor Upper lumbar cushion piezo valve Upper lumbar cushion pressure sensor W/ lumbar support W/ multicontour seat & dynamic seat Passenger"s Memory Seat Wiring Diagram (3 of 4) for Mercedes-Benz S550 2008 List of elements for Passenger"s Memory Seat Wiring Diagram (3 of 4) for Mercedes-Benz S550 2008: 19 Can-a h Can-a l Can-b h Can-b l Can-f h Can-f l Central gateway control module Computer data lines system Data Flat wire Front central operating unit Front sam control module w/ fuse & relay module Memory 1, 2, 3 switch Memory store button switch Right front door control module (in right front door) Right front seat control module Right front seat operation switch group Right rear footwell lamp Seats system Passenger"s Memory Seat Wiring Diagram (4 of 4) for Mercedes-Benz S550 2008 List of elements for Passenger"s Memory Seat Wiring Diagram (4 of 4) for Mercedes-Benz S550 2008: 18 (if equipped) front passenger lumbar support regulator control unit Can-b h Can-b l Computer data lines system Fuse 40a Hot at all times Left instrument panel fuse box Red Right front backrest angle adjustment motor Right front head restraint motor Right front seat belt comfort solenoid Right front seat control module Right front seat cushion fore/aft motor Right front seat cushion inclination motor Right front seat fore/aft adjustment motor Right front seat height adjustment motor Seats system W19 Steering Column Memory Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Steering Column Memory Wiring Diagram for Mercedes-Benz S550 2008: 25 Can-b h Can-b l Can-e h Can-e l Computer data lines system Data Flat wire Front prefuse Front sam control module w/ fuse & relay module Fuse 200a Gnd Hot at all times Left front door control module (in left front door) Left front seat operation switch group Memory 1, 2, 3 switch Memory store button switch Mls+ Mls- Raise/lower & forward/ backward switch Red Steering column adjustment/ steering wheel heater switch Steering column forward/backward motor Steering column module (at top of steering column) Steering column raise/lower motor W34
NAVIGATION COMAND Actuation Wiring Diagram for Mercedes-Benz S550 2008 List of elements for COMAND Actuation Wiring Diagram for Mercedes-Benz S550 2008: 29 Antenna splitter Backup camera circuit Can-a h Can-a l Can-f h Can-f l Comand control unit Comand display Computer data lines system Fbas Fbas gnd Front sam control module w/ fuse & relay module Fuse 7.5a Gps antenna (at rear center of roof) Hot at all times Most Most in Most out Most wakeup Nca Nf in gnd Nf in(l) Nf in(r) Rear sam control module w/ fuse & relay module Red Sound systems W18 W43 Walkman separation point Emergency Call Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Emergency Call Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 33 (left side of trunk) w6 15r Ant Antenna splitter C138 Can-d h Can-d l Computer data lines system Crash Ctel antenna (at rear center of roof) Ec led Ecs Emergency call system antenna splitter Emergency call system control unit Emergency call system left backup antenna Emergency call system right backup antenna Frequency switchover control module Fuse 7.5a Hot w/ circuit 15r relay energized Ic led Ics Lsp + Lsp - Mic Mic shield Mute Nca Rear sam control module w/ fuse & relay module Red Sound systems Tdc led Uhi portable ctel holder (universal handy interface) W6 (left side of trunk) Emergency Call Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Emergency Call Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 15 11c Center cockpit speaker (centerfill) Computer data lines system Early production Fuse 5a Hot at all times Instrument cluster system Late production Mb-info & telediagnosis button group Nca Red Restraint systems control module Right instrument panel fuse box Sos pushbutton switch W6 (left side of trunk) Parktronic Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Parktronic Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 39 (+) sh (+) sv (-) sh (-) sv (under left rear seat) w17/1 C142 Can-b h Can-b l Center left front pts ultrasonic sensor Center right front pts ultrasonic sensor Cockpit switch group Computer data lines system Data Front bumper left inner radar sensor Front bumper right inner radar sensor Front bumper right outer radar sensor Front outer left outer radar sensor Fuse 7.5a Hot at all times Inner left front pts ultrasonic sensor Inner right front pts ultrasonic sensor Outer left front pts ultrasonic sensor Outer right front pts ultrasonic sensor Pts control module Pts off switch Rear sam control module w/ fuse & relay module S1 v S10 h S2 v S3 v S4 v S5 v S6 v S7 h S8 h S9 h W/ distronic plus W/ parktronic system W7/1 (near right taillight) Parktronic Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Parktronic Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 24 (under left rear seat) w17/1 C135 Can-e h Can-e l Can-h h Can-h l Computer data lines system Fuse 7.5a Hot w/ circuit 15r relay energized Inner left rear pts ultrasonic sensor Inner right rear pts ultrasonic sensor Outer left rear pts ultrasonic sensor Outer right rear pts ultrasonic sensor Radar sensors control unit Rear bumper left inner radar sensor Rear bumper left outer radar sensor (w/ blind spot assist) Rear bumper right inner radar sensor Rear bumper right outer radar sensor (w/ blind spot assist) Rear pts warning display Rear sam control module w/ fuse & relay module W/ distronic system W/ parktronic system W17/1 (under left rear seat) W7/1 (near right taillight) Rear Camera Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Rear Camera Wiring Diagram for Mercedes-Benz S550 2008: 11 Backup camera C141 Comand control unit Exterior lights system Fuse 5a Gnd Hot at all times Nca Rear sam control module w/ fuse & relay module Red W6 (left side of trunk)
PASSIVE RESTRAINTS Passive Restraints Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Passive Restraints Wiring Diagram for Mercedes-Benz S550 2008: 25 C19 Can-b h Can-b l Computer data lines system Fuse 40a Gk l Gk r Hot at all times Left front seat belt comfort feature solenoid (at base of left "b" pillar) Left front seat control module Left instrument panel fuse box Left rear seat belt buckle/ belt comfort feature switch (in left rear seat belt buckle) Left rear seat belt comfort feature solenoid (under left rear window shelf) Nca Rear sam control module Rear seats control module Red Right front seat belt comfort feature solenoid Right front seat control module Right rear seat belt buckle/ belt comfort feature switch (in right rear seat belt buckle) Right rear seat belt comfort feature solenoid W17 W18 W19 W54
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Mercedes-Benz S550 2008 List of elements for Power Distribution Wiring Diagram (1 of 4) for Mercedes-Benz S550 2008: 58 (not used) 11a 11c A/c recirculation unit Air pump relay Air suspension compressor relay Battery coupling relay Central gateway control module Data link connector Electric suction fan engine & a/c w/ integrated relay module Emergency call system control unit Engine circuit 87 relay Esp control module Fan relay module From front prefuse (diagram 1 of 4) Front prefuse Front sam control module w/ fuse & relay module Fuse 100a Fuse 10a Fuse 125a Fuse 150a Fuse 200a Fuse 20a Fuse 25a Fuse 400a Fuse 40a Fuse 5a Fuse 7.5a Fuse 80a Generator Heated windshield control module If equipped Instrument cluster Mr1 Mr5 On-board electrical network line pyrofuse On-board electrical network line pyrofuse temperature sensor On-board electrical system battery Pnk/red Quiescent current cutout relay Red Starter Starter battery Starter circuit 15 relay To chassis circuit 87 relay (diagram 3 of 4) To circuit 15 relay (diagram 4 of 4) To circuit 15r relay (diagram 4 of 4) To eis (ezs) control unit (diagram 4 of 4) To front sam control module w/ fuse & relay module (diagram 1 of 4) To front sam control module w/ fuse & relay module (diagram 3 of 4) To left instrument panel fuse box (diagram 3 of 4) To rear sam control module w/ fuse & relay module (diagram 2 of 4) To rear sam control module w/ fuse & relay module (diagram 3 of 4) To right instrument panel fuse box (diagram 2 of 4) To special protection vehicle additional fuse holder (diagram 2 of 4) Upper control panel control module W3/1 Wiper park heater relay Power Distribution Wiring Diagram (2 of 4) for Mercedes-Benz S550 2008 List of elements for Power Distribution Wiring Diagram (2 of 4) for Mercedes-Benz S550 2008: 60 (not used) Alarm signal siren C10 C12 C13 C139 C14 C140 C16 C18 C19 C20 Cigar lighter relay Circuit 30 connector sleeve Circulating pump relay Early production Electric parking brake control module Emergency call system control unit Fire extinguishing system control module From front sam control module w/ fuse & relay module (diagram 1 of 4) Fuel pump relay module Fuse Fuse 15a Fuse 20a Fuse 30a Fuse 40a Fuse 50a Fuse 5a Fuse 7.5a Heating element If equipped Intelligent servo module Interior lights system Keyless go control module Late production Left front door control module Left rear door control module Nca Outside speaker interfe- rence filter Pnk/red Power outlet relay Power window hydraulic pump relay Rear cigar lighter Rear fuse box i Rear fuse box ii Rear right door control module Rear sam control module w/ fuse & relay module Rear window antenna amplifier module Rear window defroster relay Red Relay (feed from circuit 15) Right front door control module Right instrument panel fuse box Special protection vehicle additional fuse holder Special vehicle multifunction control module Tlc (hds) control module To circuit 15 relay (diagram 4 of 4) To circuit 15r relay (diagram 4 of 4) Two-way radio relay module W17 Power Distribution Wiring Diagram (3 of 4) for Mercedes-Benz S550 2008 List of elements for Power Distribution Wiring Diagram (3 of 4) for Mercedes-Benz S550 2008: 68 (not used) Aac (kla) control module Airmatic w/ ads control module (if equipped) abc control module (if equipped) Audio tuner control unit C141 C142 C143 C144 C145 C146 C148 C149 C150 C151 C152 C60 C62 C66 Chassis circuit 87 relay Comand control unit Comand display Dtr control unit Electric control unit Electric parking brake control unit Esp control module From fuse 120 q (diagram 3 fo 4) From fuse 29 (diagram 1 fo 4) Front center operating unit Front sam control module w/ fuse & relay module Fuel pump control module (late production) Fuse Fuse (backup camera) 5a Fuse 10a Fuse 15a Fuse 25a Fuse 30a Fuse 40a Fuse 5a Fuse 7.5a If equipped Left front reversible emergency tensioning retractor Left front seat control module Left instrument panel fuse box Left rear multicontour backrest control module Lumber pump (w/ standard equipment & lumber support) pneumatic pump for dynamic seat control (w/ dynamic seat) multicontour seat pneumatic pump (w/ multicontour seat) Me-sfi (me) control module Night vision assist control module Overhead control panel module Pts control module (w/ parktronic system) radar sensor control unit (sgr) (w/ distronic plus) Rcp (hbf) control module Rear a/c control module Rear climate control electronic blower regulator Rear sam control module w/ fuse & relay module Rear seats control module Red Restraint systems control module Right front reversible emergency tensioning retractor Right front seat control module Right rear multicontour backrest control module Sdar control unit Steering column module To fuse (diagram 3 fo 4) Tpm control module Universal portable ctel interface (upci (uhi)) control module Voice control system (vcs(sbs)) control module (early production) panoramic sliding roof control module (late production) Voice control system (vcs(sbs)) control module (late production) W/ rear a/c Wss control unit (weight sensing system) Power Distribution Wiring Diagram (4 of 4) for Mercedes-Benz S550 2008 List of elements for Power Distribution Wiring Diagram (4 of 4) for Mercedes-Benz S550 2008: 57 (not used) C133 C134 C135 C137 C138 C61 C63 C64 C65 Chassis can/ cockpit voltage distributor connector Circuit 15r relay Circuit relay Driver neck- pro head restraint solenoid separation point Eis (ezs) control module Emergency call system control unit Fan relay module From front sam control module w/ fuse & relay module (diagram 1 of 4) From fuse 130 p (diagram 2 of 4) From fuse 39 j (diagram 1 of 4) From fuse 40 i (diagram 1 of 4) From fuse o (diagram 2 of 4) From r fuse 64 (diagram 4 of 4) Front cigar lighter Front passenger neck-pro head restraint solenoid separation point Front sam control module w/ fuse & relay module Fuse Fuse 10a Fuse 10a (ok 7.5a) Fuse 15a Fuse 25a Fuse 30a Fuse 52a Fuse 52b 15a Fuse 7.5a Hydraulic power window open relay, hydraulic power window closed relay & door hydraulic power window pressure switch Instrument cluster Interior can/ cockpit voltage distributor connector Interior lights system Left front headlamp unit Master wiper motor Me-sfi (me) control module Mr2 Mr3 Nca Pnk/red Radar sensor control unit (sgr) Rear sam control module w/ fuse & relay module Red Restraint system control module Right front headlamp unit Slave wiper motor To fuse 61 (diagram 4 of 4) Volume control intermediate connector W/ rear entertainment (dvd) W15/1 W34
POWER DOOR LOCKS Automatic Door Locks Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Automatic Door Locks Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 49 (-) +5v 58d Additional door lock motor (w/ additional door locks) m Can-b h Can-b l Child safety lock motor (w/ child safety door locks) Cl (zv) Cl (zv) motor Computer data lines system Data Dfk Door additional lock motor Door locks Drive lock pawl switch Driver door infrared sensor Flat wire Fuse 40a Hot at all times If equipped Keyless go system circuit Left front door control module (in left front door) Left front door entrance & exit lamp Left front door inside handle illumination Left front door lock unit Left front door warning lamp Left rear door control module (in left rear door) Left rear door entrance & exit lamp Left rear door lock unit Left rear door warning lamp Left rear inside door handle illumination Motor Nca Opening assist m Opening assist motor Power closing motor Red Right instrument panel fuse box Rotary tumbler switch Safety limit switch Sig Svs-mot Tzs-mot W/ additional door locks W/ child safety W/ power closing W18 W34/1 Zv-mot Automatic Door Locks Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Automatic Door Locks Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 46 (-) 58d Additional door lock motor (w/ additional door locks) child safety lock motor (w/ child safety door locks) Can-b h Can-b l Cl (zv) Cl (zv) motor Computer Computer data lines system Data lines Dfk Door additional lock motor Door contact on & off switch Door locks Drive lock pawl switch Flat wire If equipped Keyless go system circuit M opening assist motor Motor Opening assist motor Overhead control panel control module (center front of roof) Power closing motor Red Right front door control module (in right front door) Right front door entrance & exit lamp Right front door inside handle illumination Right front door lock unit Right front door warning lamp Right rear door control module (in right rear door) Right rear door entrance & exit lamp Right rear door lock unit Right rear door warning lamp Right rear inside door handle illumination Rotary tumbler switch Safety limit switch Sig Svs-mot System Tzs-mot W/ additional door locks W/ child safety W/ power closing W15/1 W19 Zv-mot Keyless Go System Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Keyless Go System Wiring Diagram for Mercedes-Benz S550 2008: 35 Ant Can b h Can b l Can-b h Can-b l Center console keyless go antenna Computer data lines system Fuse 15a Gnd Hot at all times Interior keyless go antenna Keyless go control unit Left front door lock unit Left front keyless go sensor unit Left front opening assist motor Left rear door keyless go antenna (in left rear doors) Left rear door lock unit Left rear keyless go sensor unit Left rear opening assist motor Nca Rear sam control module w/ fuse & relay module Red Right front door lock unit Right front keyless go sensor unit Right front opening assist motor Right instrument panel fuse box Right rear door keyless go antenna (in right rear doors) Right rear door lock unit Right rear keyless go sensor unit Right rear opening assist motor Top rear window antenna amplifier (center rear of roof) Trunk keyless go antenna Trunk lid keyless-go buttion W19 W54
POWER MIRRORS Power Mirrors Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Power Mirrors Wiring Diagram for Mercedes-Benz S550 2008: 26 15r Ais ser Ambient light Automatic dimming mirror Back automatic dimming sensor Can-b h Can-b l Computer data lines system Data Flat wire Forward automatic dimming sensor Fuse 25a Garage door opener indicator lamp Garage door opener pushbutton 1 Garage door opener pushbutton 2 Garage door opener pushbutton 3 Garage door opener transmitter unit Hot at all times Interior rearview mirror unit Left reading lamp Overhead control panel control module (center front of roof) Rain/light sensor Rear sam control module w/ fuse & relay module Red Right reading lamp W17/1 (under left rear seat)
POWER SEATS Front Ventilation & Heated Seat Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Front Ventilation & Heated Seat Wiring Diagram for Mercedes-Benz S550 2008: 29 Can-b h Can-b l Computer data lines system Data Flat wire Fuse 40a Heated seat switch Hot at all times Left front backrest heated cushion Left front door control module (in left front door) Left front seat backrest ventilation motor group (if equipped) Left front seat control module Left front seat cushion ventilation motor group Left front seat heated cushion Left front seat operation switch group Left front seat ventilation blower regulator (if equipped) Left instrument panel fuse box Red Right front backrest heated cushion Right front door control module (in right front door) Right front seat backrest ventilation motor group (if equipped) Right front seat control module Right front seat cushion ventilation motor group Right front seat heated cushion Right front seat operation switch group Right front seat ventilation blower regulator (if equipped) Seat ventilation switch W18 W19 Heated Steering Wheel Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Heated Steering Wheel Wiring Diagram for Mercedes-Benz S550 2008: 20 (w/ esc) heater ind (w/ esc) steering column adjustment switch (w/ steering wheel heater) steering column adjustment/ steering wheel heater switch Can-e h Can-e l Clock spring contact Computer data lines system Front sam control module fuse & relay module Fuse 10a Gnd Heater coil Heater coil temperature sensor Heater switch Hot at all times Nca Ntc Red Steering column module (at top of steering column) Steering wheel heater Steering wheel heater electronics W34 Rear Multicontour Backrest Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Rear Multicontour Backrest Wiring Diagram for Mercedes-Benz S550 2008: 11 (under left rear seat) w17/1 Can-b h Can-b l Computer data lines system Fuse 7.5a Hot at all times Left instrument panel fuse box Left rear multicontour backrest connector Left rear multicontour backrest control module Right rear multicontour backrest connector Right rear multicontour backrest control module Rear Ventilation & Heated Seat Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Rear Ventilation & Heated Seat Wiring Diagram for Mercedes-Benz S550 2008: 30 (+) C143 Can-b h Can-b l Computer data lines system Data Flat wire Fuse 25a Heated seat switch Hot at all times Left rear backrest heated cushion Left rear door control module (in left rear door) Left rear seat backrest ventilation motor group Left rear seat cushion ventilation motor group Left rear seat heated cushion Left rear seat operation switch group Left rear seat ventilation blower regulator Rear sam control module w/ fuse & relay module Rear seats control module Red Right rear backrest heated cushion Right rear door control module (in right rear door) Right rear seat backrest ventilation motor group Right rear seat cushion ventilation motor group Right rear seat heated cushion Right rear seat operation switch group Right rear seat ventilation blower regulator Seat ventilation switch Sibl W54 Weight Sensing System Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Weight Sensing System Wiring Diagram for Mercedes-Benz S550 2008: 16 (under front of center console) w26 Belt tension sensor Can-b h Can-b l Computer data lines system Data Fuse 7.5a Hot at all times Left front wss (weight sensing system) sensor Left instrument panel fuse box Left rear wss (weight sensing system) sensor Red Right front wss (weight sensing system) sensor Right rear wss (weight sensing system) sensor Sig Wss control unit (weight sensing system)
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Power Top/Sunroof Wiring Diagram for Mercedes-Benz S550 2008: 18 Can b-l Can-b h Computer data lines system Front roller sun blind motor (if equipped) Fuse 25a Hot at all times Hs-ub Hs1 Hs2 Motor + Motor - Overhead control panel control module (center front of roof) Rear roller sun blind motor (w/ front roller sun blind) Rear sam control module w/ fuse & relay module Red Roof drive system (w/ front roller sun blind) Roof switch W17/1 (under left rear seat)
POWER WINDOWS Power Windows Wiring Diagram, Early Production (1 of 4) for Mercedes-Benz S550 2008 List of elements for Power Windows Wiring Diagram, Early Production (1 of 4) for Mercedes-Benz S550 2008: 29 Can b h Can b l Computer data lines system Data Door hydraulic power window pressure switch Front passenger power window switch Fuse 40a Hot at all times Hs (-) Hs 1 Hs 2 Hs-ub Hydraulic power window doors limit switch Motor Nca Power window overvoltage protection diode Red Right front door control module (in right front door) Right front door hydraulic power window closed relay Right front door hydraulic power window open relay Right front power window motor (in right front door) Right instrument panel fuse box Vr1 Vr2 Vr3 Vr4 W/ special protection W/o special protection W15/1 Power Windows Wiring Diagram, Early Production (2 of 4) for Mercedes-Benz S550 2008 List of elements for Power Windows Wiring Diagram, Early Production (2 of 4) for Mercedes-Benz S550 2008: 44 (not used) 58d Can b h Can b l Computer data lines system Data Door hydraulic power window pressure switch Fh-mot+ Fh-tief Fuse 40a Hf-hoch Hot at all times Hr1 Hr2 Hr3 Hr4 Hs 1 Hs 2 Hs-ub Hydraulic power window doors limit switch Left rear power window & side window roller blind switch Nca Pnk Pnk/red Power window over voltage protection diode Rear individual power window switch Rear sam control module w/ fuse & relay module Rear side roller blind/roof roller blind/rear roller blind Rear window blind motor Rear window roller blind switch Red Res fuse Right instrument panel fuse box Right rear door control module (in right rear door) Right rear door hydraulic power window closed relay Right rear door hydraulic power window open relay Right rear door power window/ roller blind switch group Right rear power window & side window roller blind switch Right rear power window motor (in right rear door) Right rear power window switch Roof blind switch W/ special protection W/o special protection W19 Power Windows Wiring Diagram, Early Production (3 of 4) for Mercedes-Benz S550 2008 List of elements for Power Windows Wiring Diagram, Early Production (3 of 4) for Mercedes-Benz S550 2008: 42 Can b h Can b l Computer data lines system Data Door hydraulic power window pressure switch Driver power window, out side mirror & trunk lid switch group Front power window diode matrix Fuse 40a Hot at all times Hs (-) Hs 1 Hs 2 Hs-ub Hydraulic power window closed relay Hydraulic power window doors limit switch Left front door control module (in left front door) Left front power window motor (in left front door) Left front power window switch Motor Nca Pnk Power window overvoltage protection diode Power window solenoid valve 1 Power window solenoid valve 2 Power window solenoid valve 3 Power window solenoid valve 4 Power window solenoid valve 5 Power window solenoid valve 6 Power window solenoid valve 7 Power window solenoid valve 8 Rear power window diode matrix Red Right front door hydraulic power window open relay Right instrument panel fuse box Vl1 Vl2 Vl3 Vl4 W/ special protection W/o special protection W34/1 W50 (at right front door sill) Power Windows Wiring Diagram, Early Production (4 of 4) for Mercedes-Benz S550 2008 List of elements for Power Windows Wiring Diagram, Early Production (4 of 4) for Mercedes-Benz S550 2008: 46 (at right front door sill) w50 (not used) 58d Can b h Can b l Computer data lines system Data Door hydraulic power window pressure switch Fh-mot Fh-tief Fuse 30a Fuse 40a Hf-hoch Hl1 Hl2 Hl3 Hl4 Hot at all times Hs 1 Hs 2 Hs-ub Hydraulic power window doors limit switch Hydraulic pump thermo switch Left rear door control module (in left rear door) Left rear door hydraulic power window closed relay Left rear door hydraulic power window open relay Left rear door power window/ roller blind switch group Left rear power window & side window roller blind switch Left rear power window motor (in left rear door) Left rear power window switch Nca Power window hydraulic pump Power window hydraulic pump relay Power window overvoltage protection diode Rear individual power window switch Rear side roller blind/roof roller blind/rear roller blind Rear window roller blind switch Red Right instrument panel fuse box Right rear power window & side window roller blind switch Roof blind switch Special protection vehicle additional fuse holder W/ special protection W/o special protection W18 W50 (at right front door sill) Power Windows Wiring Diagram, Late Production (1 of 3) for Mercedes-Benz S550 2008 List of elements for Power Windows Wiring Diagram, Late Production (1 of 3) for Mercedes-Benz S550 2008: 42 (not used) (or pnk) 58d Can b h Can b l Can-b h Can-b l Computer data lines system Data Fh-mot+ Fh-tief Front passenger power window switch Fuse 40a Hf-hoch Hot at all times Hs (-) Hs 1 Hs 2 Hs-ub Left rear power window & side window roller blind switch Motor Nca Pnk Rear individual power window switch Rear side roller blind/roof roller blind/rear roller blind Rear window roller blind switch Red Right front door control module (in right front door) Right front hydraulic window lifter fuse Right front power window motor (in right front door) Right instrument panel fuse box Right rear door control module (in right rear door) Right rear door power window/ roller blind switch group Right rear hydraulic window lifter fuse Right rear power window & side window roller blind switch Right rear power window motor (in right rear door) Right rear power window switch Roof blind switch W/ special protection W/o special protection W15/1 W19 Power Windows Wiring Diagram, Late Production (2 of 3) for Mercedes-Benz S550 2008 List of elements for Power Windows Wiring Diagram, Late Production (2 of 3) for Mercedes-Benz S550 2008: 12 Front power window diode matrix Pnk Power window solenoid valve 1 Power window solenoid valve 2 Power window solenoid valve 3 Power window solenoid valve 4 Power window solenoid valve 5 Power window solenoid valve 6 Power window solenoid valve 7 Power window solenoid valve 8 Rear power window diode matrix W50 (at right front door sill) Power Windows Wiring Diagram, Late Production (3 of 3) for Mercedes-Benz S550 2008 List of elements for Power Windows Wiring Diagram, Late Production (3 of 3) for Mercedes-Benz S550 2008: 45 (at right front door sill) w50 (not used) 58d Can b h Can b l Computer data lines system Data Driver power window, out side mirror & trunk lid switch group Fh-mot Fh-tief Fuse 30a Fuse 40a Hf-hoch Hot at all times Hs (-) Hs 1 Hs 2 Hs-ub Hydraulic pump thermo switch Left front door control module (in left front door) Left front hydraulic window lifter fuse Left front power window motor (in left front door) Left front power window switch Left rear door control module (in left rear door) Left rear door power window/ roller blind switch group Left rear hydraulic window lifter fuse Left rear power window & side window roller blind switch Left rear power window motor (in left rear door) Left rear power window switch Motor Nca Power window hydraulic pump Power window hydraulic pump relay Rear individual power window switch Rear side roller blind/roof roller blind/rear roller blind Rear window roller blind switch Red Right instrument panel fuse box Right rear power window & side window roller blind switch Roof blind switch Special protection vehical additional fuse holder W/ special protection W/o special protection W18 W34/1
RADIO COMAND Actuation Wiring Diagram for Mercedes-Benz S550 2008 List of elements for COMAND Actuation Wiring Diagram for Mercedes-Benz S550 2008: 29 Antenna splitter Backup camera circuit Can-a h Can-a l Can-f h Can-f l Comand control unit Comand display Computer data lines system Fbas Fbas gnd Front sam control module w/ fuse & relay module Fuse 7.5a Gps antenna (at rear center of roof) Hot at all times Most Most in Most out Most wakeup Nca Nf in gnd Nf in(l) Nf in(r) Rear sam control module w/ fuse & relay module Red Sound systems W18 W43 Walkman separation point Intercom Control Module Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Intercom Control Module Wiring Diagram for Mercedes-Benz S550 2008: 18 (+) (-) C20 External communication control module Fuse 30a Hot at all times Interior speaker Left outside mirror microphone Microphone separation point Mikro + Mikro - Mute connector Nca Outside speaker Rear fuse box 1 Red Right outside mirror microphone W7/1 (near right taillight) MOST Data Bus Wiring Diagram for Mercedes-Benz S550 2008 List of elements for MOST Data Bus Wiring Diagram for Mercedes-Benz S550 2008: 9 Audio tuner control unit Comand control unit Fiber optical cable connector (most) Most Out Sdar control unit (if equipped) Universal portable ctel interface (upci (uhi)) control module (if equipped) Voice control system (vcs (sbs)) control unit (if equipped) Wake up Radio Wiring Diagram (1 of 3) for Mercedes-Benz S550 2008 List of elements for Radio Wiring Diagram (1 of 3) for Mercedes-Benz S550 2008: 49 Antenna Audio tuner control unit Cen + Cen - Center cockpit speaker (centerfill) Fuse 40a Hl + Hl - Hot at all times Hr + Hr - Left front door sound tweeter Left front door sound woofer & midrange speaker group Left instrument panel fuse box Mic + Mic - Midrange speaker Most data bus circuit Most in Most out Most wake up Mute Nca Right front door sound tweeter Right front door sound woofer & midrange speaker group Right rear surround loudspeaker Shield Sub1 + Sub1 - Sub2 + Sub2 - Surhl + Surhl - Surhr + Surhr - Vl + Vl - Vls1 + Vls1 - Vls2 + Vls2 - Vr + Vr - Vrs1 + Vrs1 - Vrs2 + Vrs2 - W6 (left side of trunk) Woofer Radio Wiring Diagram (2 of 3) for Mercedes-Benz S550 2008 List of elements for Radio Wiring Diagram (2 of 3) for Mercedes-Benz S550 2008: 26 (not used) Ant Bass module loudspeaker C148 Can-b h Can-b l Computer data lines system Early production Fuse 25a Fuse 7.5a Fzv Gnd Hot at all times Keyless go control unit (if equipped) Late production Left front door speaker group Left rear door guard speaker (w/ special protection) Left rear surround loudspeaker Nca Rear sam control module w/ fuse & relay module Rear window antenna amplifier module Red Right rear door guard speaker (w/ special protection) Right rear door speaker group Tweeter Woofer Radio Wiring Diagram (3 of 3) for Mercedes-Benz S550 2008 List of elements for Radio Wiring Diagram (3 of 3) for Mercedes-Benz S550 2008: 40 (left side of trunk) w6 Antenna splitter Button "back" Button "on" C1a Can b h Can b l Can-a h Can-a l Can-d h Can-d l Comand control unit Computer data lines system Disc/radio quick select button Emergency call system control unit Freely programm- able button Front central operating unit Gps antenna (at rear center of roof) Hazard warning system button Head restraint folding button Lin-bus Multi- contour seat quick select button Mute button Nca Portable ctel antenna amplifier Progkey Red Sound amplifier microphone Telephone keypad Telephone/ navigation quick select button Transmission modes button Turn/ push control Uhi portable ctel holder (universal handy interface) Universal portable ctel interface (upci (uhi)) control module Upper control panel module Volume control W18 Wbs-in Wbs-led Wbs-out Satellite Radio Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Satellite Radio Wiring Diagram for Mercedes-Benz S550 2008: 13 (left side of trunk) w6 Ant Fuse 5a Hot at all times Left instrument panel fuse box Most Most data bus circuit Most in Most out Nca Sdar antenna Sdar control unit Wake up Voice Activation Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Voice Activation Wiring Diagram for Mercedes-Benz S550 2008: 36 (not used) Bus circuit C149 red Can h Can l Can-d h Can-d l Clock spring contact Computer data lines system Early production Emergency call system control unit Fuse 5a Hands-free system microphone group Hot at all times I1 red Late production Mic 1 Mic 2 Mic gnd Mic shield Most Most data Most in Most out Most wake up Nca Nca nca Pnk Rear sam control module w/ fuse & relay module Red Right multi-function steering wheel pushbutton group Steering column module (at top of steering column) Steering wheel gear shift signal processing module Vcs on button Voice control system (vcs (sbs)) control unit W6 (left side of trunk)
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Shift Interlock Wiring Diagram for Mercedes-Benz S550 2008: 19 58d Can b h Can b l Can g l Chassis circuit 87 relay Computer data lines system Electric parking brake control unit Electric parking brake switch Front sam control module w/ fuse & relay module Fuse 30a Fuse 5a Hot at all times Rear sam control module w/ fuse & relay module Sw 1 Sw 3 Sw 4 Sw 6 W34 W54/3
STARTING/CHARGING Charging Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Charging Wiring Diagram for Mercedes-Benz S550 2008: 19 11a Battery coupling relay Can-e h Can-e l Can-f h Can-f l Computer data lines system Front prefuse Fuse 400a Generator Instrument cluster Me-sfi (me) control unit (right rear of engine compt) On-board electrical network line pyrofuse On-board electrical system battery Red Starter battery Starting circuit W10 (at right rear of trunk) W10/4 Starting Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Starting Wiring Diagram for Mercedes-Benz S550 2008: 27 Battery coupling relay Can-c h Can-c l Can-e h Can-e l Computer data lines system Eis (ezs) control unit Electric control unit (vgs) Engine circuit 87 relay Front prefuse Front sam control module w/ fuse & relay module Fuse 200a Fuse 20a Intelligent servo module for direct select Me-sfi (me) control unit (right rear of engine compt) Mr1 Mr2 Mr4 Mr5 Red Solid state Start Starter Starter battery Starter circuit 15 relay Starter circuit 50 relay W10 (at right rear of trunk)
SUPPLEMENTAL RESTRAINTS Emergency Seat Belt Tensioners Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Emergency Seat Belt Tensioners Wiring Diagram for Mercedes-Benz S550 2008: 9 Can h Can l Computer data lines system Left front reversible emergency tensioning retractor Rear sam control module w/ fuse & relay box Red Right front reversible emergency tensioning retractor W18 W19 Supplemental Restraint Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008 List of elements for Supplemental Restraint Wiring Diagram (1 of 2) for Mercedes-Benz S550 2008: 33 (under front of center console) (under front of center console) w26 Belt tension sensor C19 C61 C64 Can h Can l Computer data lines system Driver buckle etr squib Front passenger buckle etr squib Front sam control module w/ fuse & relay box Fuse 7.5a Hot at all times Left front side airbag squib Left front wss sensor Left instrument panel fuse box Left rear etr squib (at left "c" pillar) Left rear side airbag squib Left rear window airbag squib Left rear wss sensor Me-sfi control module Rear sam control module Red Restraint systems control module Right front side airbag squib Right front wss sensor Right rear etr squib (at right "c" pillar) Right rear side airbag squib Right rear window airbag squib Right rear wss sensor W26 Weight sensing system (wss) control unit Supplemental Restraint Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008 List of elements for Supplemental Restraint Wiring Diagram (2 of 2) for Mercedes-Benz S550 2008: 22 (right side of dash) front passenger airbag squib 1 (right side of dash) front passenger airbag squib 2 Clock spring Driver airbag squib 1 Driver airbag squib 2 Driver assist airbag system Driver door pressure sensor Driver neck-pro head restraint solenoid Driver seat belt buckle and seat belt warning switch Driver's side frontal acceleration sensor Emergency call system control unit (if equipped) Front passenger assist airbag system Front passenger door pressure sensor Front passenger neck-pro head restraint solenoid Left rear door pressure sensor Passenger seat belt buckle and seat belt warning switch Passenger's side frontal acceleration sensor Pnk Restraint systems control module Right rear door pressure sensor Steering column module W26 (under front of center console)
TRANSMISSION Transmission Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Transmission Wiring Diagram for Mercedes-Benz S550 2008: 32 B1 brake ctrl sol vlv B2 brake ctrl sol vlv B3 brake ctrl sol vlv Can b h Can b l Can c h Can c l Can-c h Can-c l Computer data lines system Diag k Electric control unit Front prefuse Front sam control module w/ fuse & relay module Fully integrated transmission control unit Fuse 200a Fuse 30a Hot at all times Intelligent servo module Internal speed sensor (vgs) K1 clutch ctrl sol vlv K2 clutch ctrl sol vlv K3 clutch ctrl sol vlv Output speed sensor (vgs) Red Right instrument panel fuse box Selection range sensor Torque converter lockup clutch ctrl sol vlv Transmission oil temp sensor Turbine speed sensor (vgs) W15/1 Working press ctrl sol vlv
TRUNK, TAILGATE, FUEL DOOR Trunk Release Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Trunk Release Wiring Diagram for Mercedes-Benz S550 2008: 28 Can-b h Can-b l Computer data lines system Data Driver power window outside mirror & trunk lid switch Fuel filler flap cl motor Fuse 200a Fuse 40a Gearing 2 Hd-as Hot at all times Left front door control module (in left front door) Lf power window sw Lock pawl Nca Rear sam control module w/ fuse & relay module Red Rf power window sw Right instrument panel fuse box Rotary tumbler Trunk lid (zv) motor Trunk lid contact switch Trunk lid emergency release switch Trunk lid external operation switch Trunk lid keyless go button (if equipped) Trunk open/close sw W34/1 W54
WARNING SYSTEMS Seat Belt Warning Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Seat Belt Warning Wiring Diagram for Mercedes-Benz S550 2008: 44 (under front of center console) 15g Audible turn signal ind Brake fluid indicator switch (left rear of engine compt) Brake fluid warning lamp Can-b h Can-b l Can-e h Can-e l Can-f h Can-f l Computer data lines system Dfk Door locks system Driver seat belt buckle & seat warning switch Front prefuse Front sam control module w/ fuse & relay module Fuse 200a Fuse 7.5a Gnd Gss fa Hot at all times Hot w/ quiescent current cutout relay energized Instrument cluster Left front door control module (in left front door) Left front door lock unit Left instrument panel fuse box Lin bus Mr4 Mr7 Nca Pnk/ red Pnk/red Power distribution system Red Restraint systems control module Right front brake pad contact sensor Rotary tumbler switch Seat belt reminder lamp Sig W26 W26 (under front of center console) W34 Warning buzzer Tire Pressure Monitoring Wiring Diagram for Mercedes-Benz S550 2008 List of elements for Tire Pressure Monitoring Wiring Diagram for Mercedes-Benz S550 2008: 30 (late production) w54 15g Can-b h Can-b l Can-f h Can-f l Central tpm (rdk) wheel antenna Computer data lines system Data Front sam control module w/ fuse & relay module Fuse 5a Fuse 7.5a Hot at all times Instrument cluster Left front tpm (rdk) wheel antenna Left front tpm (rdk) wheel sensor Left instrument panel fuse box Left rear tpm (rdk) wheel sensor Lin Pnk/ red Pnk/red Power Red Right front tpm (rdk) wheel antenna Right front tpm (rdk) wheel sensor Right rear tpm (rdk) wheel sensor Tire pressure monitor warning lamp Tpm control module W19 (early production) W34
