Mercedes-Benz GL-class X166 (2012-2016) steering column module control unit Wiring diagrams

3.0L TURBO DIESEL 3.0L TURBO DIESEL 4.6L TURBO, 3.5L BATTERY COMPARTMENT PREFUSE BOX BEHIND STEERING WHEEL) BLK WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN A H CAN A L CAN B H CAN B H IP CAN B L CAN C H CAN C L CLUTCH CONTROL SOLENOID CLUTCH CONTROL SOLENOID COMPUTER DATA LINES SYSTEM DIRECT SELECT LEVER ELECTRIC TRANSMISSION OIL PUMP ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FULLY INTEGRATED TRANSMISSION CONTROL CONTROL UNIT (IN TRANSMISSION) FUSE 2 FUSE 232 FUSE 237 GEAR IND GRN WIRE GRN/WHT WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ CIRCUIT HOT W/ CIRCUIT 15 RELAY ENERGIZED INSTRUMENT CLUSTER INTELLIGENT SERVO MODULE (DIRECT SELECT) INTERNAL TRANSMISSION SPEED RPM SENSOR ISM LOWER CONTROL PANEL CONTROL UNIT MODE DISPLAY MULTIDISK BRAKE CONTROL SOLENOID MULTIPLE FUSE 1 OUTPUT SHAFT) P NOT PNK WIRE PRND RED WIRE RED/BLK WIRE RED/VIO WIRE RED/WHT WIRE RPM SENSOR SAM CONTROL UNIT (RIGHT KICK PANEL) SELECTION RANGE SENSOR STEERING COLUMN MODULE CONTROL UNIT TORQUE CONVERTER LOCKUP CLUTCH CONTROL SOLENOID VALVE TRANSMISSION TRANSMISSION MODE BUTTON TRANSMISSION OIL AUXILIARY PUMP CONTROL UNIT TRANSMISSION OIL TEMPERATURE SENSOR TURBINE WHEEL RPM SENSOR WORKING PRESSURE CONTROL SOLENOID VALVE CLUTCH CONTROL SOLENOID

360 DEGREE CAMERA CONTROL UNIT ANT BT ANT GPS AUDIO/COMMAND DISPLAY BACKUP CAMERA BEHIND STEERING WHEEL) BLK WIRE BLK/WHT WIRE BLU WIRE BLUETOOTH ANTENNA BRN WIRE CAN A H CAN A L CLOCK SPRING CONTACT (TOP OF STEERING COLUMN) COMAND CONTROL UNIT COMPUTER DATA LINES SYSTEM FUSE 20 FUSE 21 GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER GPS GRN WIRE GRN/WHT WIRE HOT W/ CIRCUIT LUM LVDS TX- MEDIA INTERFACE ELECTRICAL CONNECTOR MOST DATA BUS CIRCUIT MOST IN MOST OUT MULTI-FUNCTION ANTENNA NCA WIRE NIGHT VIEW ASSIST CONTROL UNIT ORG/ WIRE PNK/BLK WIRE RED/BLK WIRE RES+ SHIELD SHIELD LUNA STEERING COLUMN MODULE CONTROL UNIT TELEMATICS SERVICES COMMUNICATION MODULE UCL SHIELD UCL SIG V-BUS VIDEO C VIDEO C SHIELD W/ 360 DEGREE CAMERA W/ BACKUP CAMERA W/ NAVIGATION

4.6L TURBO 3.5L ACCELERATE, SET SWITCH ACCELERATOR PEDAL SENSOR BEHIND STEERING WHEEL) BLK WIRE BLK/BLU WIRE BLS H BLS L BLS M BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L CAN C H CAN C L CAN H H CAN H L CDI CONTROL UNIT (3.0L TURBO DIESEL) (REAR OF RIGHT FRONT FENDER) COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER DECELERATE, SET SWITCH DISTRONIC CONTROL DISTRONIC CONTROLLER UNIT DISTRONIC ELECTRONIC CONTROLLER DISTRONIC RADAR SENSOR DTR WARNING LAMP IND ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FULLY INTEGRATED TRANSMISSION CONTROL UNIT FUSE 20 FUSE 213 FUSE 234 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR START IND SWITCH INSTRUMENT CLUSTER M+ (-) OFF SWITCH ORG/ WIRE OUTPUT SHAFT RPM SENSOR PNK WIRE PNK/BLK WIRE PNK/VIO WIRE POTI SIG POWER DISTRIBUTION SYSTEM RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE RESUME FROM MEMORY SWITCH STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH THROTTLE VALVE ACTUATOR U PWG VIO WIRE VIO/BLK WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE YAW RATE/LATERAL/ LONGITUDINAL ACCELERATION SENSOR YEL WIRE

AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BATTERY COMPARTMENT PREFUSE BOX BEHIND STEERING WHEEL) BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CAN B H CAN B L COCKPIT CIRCUIT 30 FUSE BOX COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FT R ST FT-R-E-A FUSE 11 FUSE 19 FUSE 20 FUSE 205 FUSE 235 FUSE 239 FUSE 53 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED INSTRUMENT CLUSTER LIFTGATE WINDSHIELD WASHER SYSTEM SWITCH OVERHEAD CONTROL PANEL CONTROL UNIT RAIN/LIGHT SENSOR RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED SAM CONTROL UNIT (RIGHT KICK PANEL) SIG SPRAY NOZZLE HOSE HEATER STEERING COLUMN MODULE CONTROL UNIT WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WINDSHIELD WASHER SYSTEM PUMP WINDSHIELD WASHER SYSTEM SWITCH WINDSHIELD WASHER SYSTEM WASHER FLUID LEVEL SWITCH WINDSHIELD WIPER ON/OFF RELAY WIPER LEVEL 1/2 RELAY WIPER MOTOR WIPER PARK HEATER WIPER PARK POSITION HEATER RELAY WIPER SWITCH WP H(+) WP V(+) WWHZG WWS(-) WWS SIG

BEHIND STEERING WHEEL) BRN WIRE BRN/RED WIRE CAN B H CAN B L COMBINATION SWITCH COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SWITCH FUSE 250 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE HEADLAMP CLEANING SYSTEM PUMP HOT AT ALL TIMES INSTRUMENT CLUSTER INTERIOR PREFUSE BOX LIFTGATE WINDSHIELD WASHER SYSTEM SWITCH LWR LWR IP RED/WHT WIRE SAM CONTROL UNIT SRA-P STEERING COLUMN MODULE CONTROL UNIT VIO/WHT WIRE WINDSHIELD WASHER SYSTEM SWITCH WIPER SWITCH

ACTIVE ROLL STABILIZATION CONTROL UNIT AIRMATIC CONTROL UNIT (IF EQUIPPED) (IN LEFT REAR FOOTWELL) AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BEHIND STEERING WHEEL) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/RED WIRE CAN A H CAN A L CAN B H CAN B L CAN-S H CAN-S L COCKPIT POTENTIAL DISTRIBUTOR ELECTRICAL CONNECTOR (CAN) COLLISION PREVENTION ASSIST CONTROLLER UNIT DVD PLAYER ELECTRIC PARKING BRAKE CONTROL UNIT ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT GRN WIRE GRN/WHT WIRE INSTRUMENT CLUSTER LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR LEFT REAR BUMPER INTELLIGENT RADAR SENSOR LEFT REAR BUMPER RADAR SENSOR ME-SFI (ME) CONTROL UNIT (3.5L, 4.6L TURBO) CDI CONTROL UNIT (3.0L TURBO DIESEL) RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR RIGHT REAR BUMPER INTELLIGENT RADAR SENSOR RIGHT REAR BUMPER RADAR SENSOR STEERING COLUMN MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VIDEO, RADAR SENSOR SYSTEM CONTROL UNIT W/ REAR COMPARTMENT ENTERTAINMENT

3.0L TURBO DIESEL 3.0L TURBO DIESEL EXCEPT 3.0L TURBO DIESEL ACTIVE ROLL STABILIZATION CONTROL UNIT ADDITIONAL BATTERY BLK WIRE BLU WIRE BLU/GRY WIRE BOOSTER BLOWER ELECTRONIC BLOWER CONTROLLER BRN WIRE BRN/BLK WIRE BRN/RED WIRE BUFFER BATTERY FUSE CAN A H CAN A L CAN B H CAN B L CAN-D H CAN-D L COCKPIT CIRCUIT 30 FUSE BOX COMPUTER DATA LINES SYSTEM CONTROL UNIT) DC/AC CONVERTER CONTROL UNIT DIAGNOSTIC CONNECTOR DIRECT SELECT INTELLIGENT SERVO MODULE ECO START/STOP FUNCTION ADDITIONAL BATTERY ECO START/STOP FUNCTION ADDITIONAL BATTERY RELAY ELECTRONIC IGNITION SWITCH CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE EXCEPT 3.0L TURBO DIESEL FROM BATTERY COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 4) FROM CIRCUIT 15 RELAY (DIAGRAM 4 OF 4) FROM REAR FUSE BOX (DIAGRAM 4 OF 4) FRONT PASSENGER SEAT OCCUPIED RECOGNITION, ACSR FUSE 10 FUSE 11 FUSE 12 FUSE 13 FUSE 134 FUSE 135 FUSE 136 FUSE 137 FUSE 138 FUSE 14 FUSE 15 FUSE 16 FUSE 17 FUSE 18 FUSE 213 GLOVE BOX LAMP) GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE INSTRUMENT CLUSTER LEFT FRONT DOOR CONTROL UNIT ME-SFI (ME) CONTROL UNIT N/A NCA WIRE NOT 2 ORG/BLK WIRE ORG/BLU WIRE PNK WIRE REAR WINDOW WIPER RELAY RED WIRE RED/WHT WIRE SAM CONTROL UNIT SOCKET MICRO SWITCH STEERING COLUMN MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM TK FT UPPER CONTROL PANEL CONTROL UNIT W/ ECO STAR/STOP FUNCTION W/O ECO STAR/STOP FUNCTION WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT WHT WIRE YEL WIRE YEL/WHT WIRE

360 DEGREE CAMERA CONTROL UNIT, BACKUP CAMERA AIRMATIC RELAY ALARM SIREN AUDIO/ COMAND DISPLAY AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BACKUP RELAY BLK WIRE BLU WIRE BRN WIRE CIRCUIT 15 RELAY CIRCUIT 15 RELAY (UNLATCHED) COMAND CONTROL UNIT CONTROL UNIT) COOLANT RUN-ON PUMP RELAY DIGITAL AUDIO BROADCASTING CONTROL UNIT DIGITAL RADIO DIRECT SELECT INTELLIGENT SERVO MODULE DISTRONIC ELECTRIC CONTROL UNIT DRIVER SEAT CONTROL UNIT DVD PLAYER ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT FUSE, RELAY MODULE FANFARE HORN RELAY FROM BATTERY COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 4) FROM ENGINE COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 4) FROM MULTIPLE FUSE 1 (DIAGRAM 1 OF 4) FRONT PASSENGER SEAT CONTROL UNIT FUSE 1 FUSE 100 FUSE 101 FUSE 102 FUSE 103 FUSE 104 FUSE 105 FUSE 106 FUSE 156 FUSE 19 FUSE 2 FUSE 20 FUSE 201 FUSE 202 FUSE 203 FUSE 204 FUSE 205 FUSE 206 FUSE 207 FUSE 208 FUSE 209 FUSE 21 FUSE 210 FUSE 211 FUSE 212 FUSE 22 FUSE 221 FUSE 222 FUSE 223 FUSE 224 FUSE 225 FUSE 226 FUSE 227 FUSE 228 FUSE 229 FUSE 230 FUSE 231 FUSE 232 FUSE 233 FUSE 234 FUSE 236 FUSE 237 FUSE 239 FUSE 3 FUSE 4 FUSE 5 FUSE 6 HEADLAMP CONTROL UNIT LEFT FRONT LAMP UNIT LEFT REAR DISPLAY MEDIA INTERFACE CONTROL UNIT MULTIFUNCTION CAMERA MULTIPLE FUSE 2 MULTIPLE FUSE 3 MULTIPLE FUSE 4 N/A N/A N/A PNK WIRE RCP (HBF) CONTROL UNIT RED WIRE RIGHT FRONT LAMP UNIT RIGHT REAR DISPLAY SAM CONTROL UNIT SATELLITE DIGITAL AUDIO RADIO CONTROL UNIT STARTER CIRCUIT 50 RELAY STATIONARY HEATER UNIT STEERING COLUMN MODULE CONTROL UNIT TAILGATE CONTROL UNIT TIRE PRESSURE MONITOR CONTROL UNIT TRAILER RECOGNITION CONTROL UNIT TURBO- CHARGER RELAY VIDEO, RADAR SENSOR SYSTEM W/ COMAND W/ ECO START/ STOP FUNCTION W/ REAR ENTERTAINMENT W/ XENON HEADLAMPS WHT WIRE WINDSHIELD WIPER ON/OFF RELAY WIPER LEVEL 1/2 RELAY WIPER PARK POSITION HEATER RELAY YEL WIRE

AUTOMATIC AIR CONDITIONING CONTROL, OPERATING UNIT BEHIND STEERING WHEEL) BLK/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L COCKPIT CIRCUIT 30 FUSE BOX COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE, RELAY MODULE FUSE 11 FUSE 157 FUSE 19 FUSE 20 FUSE 205 FUSE 235 GRN WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT W/ CIRCUIT 15 RELAY ENERGIZED INSTRUMENT CLUSTER LIFTGATE WINDSHIELD WASHER SYSTEM SWITCH REAR FUSE BOX REAR WINDOW WIPER RELAY RED/BLK WIRE RED/WHT WIRE RELAY ENERGIZED SAM CONTROL UNIT (RIGHT KICK PANEL) SIG STEERING COLUMN MODULE CONTROL UNIT TAILGATE WIPER MOTOR WHT WIRE WHT/BLK WIRE WINDSHIELD WASHER SYSTEM PUMP WINDSHIELD WASHER SYSTEM SWITCH WIPER PARK HEATER WIPER PARK POSITION HEATER RELAY WIPER SWITCH WP H(+) WP V(+)

BEHIND STEERING WHEEL) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER AIR BAG SQUIB 1 DRIVER AIR BAG SQUIB 2 DRIVER KNEEBAG SQUIB DRIVER SEAT BELT BUCKLE RESTRAINT SYSTEM SWITCH FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT FRONT PASSENGER AIR BAG SQUIB 1 FRONT PASSENGER AIR BAG SQUIB 2 FRONT PASSENGER SEAT BELT BUCKLE RESTRAINT SYSTEM SWITCH FRONT PASSENGER SEAT POSITION DETECTION SWITCH GRN WIRE GRN/YEL WIRE GRY/BLK WIRE INSTRUMENT CLUSTER KB- LEFT FRONT DOOR PRESSURE SENSOR PNK WIRE RED/BLK WIRE RIGHT FRONT DOOR PRESSURE SENSOR SEAT BELT WARNING LAMP IND STEERING COLUMN MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM INDICATOR LAMP VIO WIRE VIO/WHT WIRE YEL WIRE