Mercedes-Benz CLS-class C257 (2017-2021) me-sfi (me) control unit Wiring diagrams

BATTERY DISCONNECT SWITCH RELAY BATTERY SENSOR BLK WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L CAN HMI H CAN HMI L CIRCUIT 30 TERMINAL BLOCK COMPUTER DATA LINES SYSTEM DC/DC CONVERTER CONTROL UNIT DRIVER-SIDE FUSE, RELAY MODULE FRONT SAM CONTROL UNIT FUSE 202 FUSE 6 INSTRUMENT CLUSTER INTEGRATED STARTER GENERATOR LIN ME-SFI (ME) CONTROL UNIT MPAC U MPAC V MPAC X MPAC Y MPAC Z NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY RED WIRE RED/BLK WIRE RED/WHT (OR RED) WIRE RED/WHT WIRE SIG STARTER GENERATOR CONTROL UNIT VIO WIRE VIO/WHT WIRE YEL WIRE

BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L CLIMATE CONTROL UNIT COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP COOLANT LEVEL SWITCH COOLANT TEMPERATURE SENSOR DRIVER-SIDE FUSE, RELAY MODULE ELECTRIC COOLANT PUMP (BOTTOM RIGHT FRONT OF ENGINE) ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FAN MOTOR (BEHIND RADIATOR) FRONT SAM CONTROL UNIT FUSE 119 FUSE 210 FUSE 311 FUSE 7 GRN/BLK WIRE HOT AT ALL TIMES HOT W/ CPC RELAY ENERGIZED ME-SFI (ME) CONTROL UNIT PASSENGER-SIDE A-PILLAR FUSE BOX RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE SIG SIG GND WHT/BLU WIRE YEL/BLK WIRE

BLK WIRE BLU WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE CAN H H CAN H L CAN PER H CAN PER L COMPUTER DATA LINES SYSTEM DRIVER-SIDE FUSE, RELAY MODULE ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT FLEX-E BM FLEX-E BP FLEX-E BP PNK FLEX-E BM WIRE FUSE 205 FUSE 311 FUSE 415 FUSE 6 GRN WIRE GRN/ORG WIRE GRN/PNK WIRE GRN/WHT WIRE GRY/GRN WIRE HOT AT ALL TIMES INTELLIGENT DRIVE CONTROL UNIT (LEFT SIDE OF LUGGAGE COMPT) LEFT OUTER FRONT BUMPER RADAR SENSOR ME-SFI (ME) CONTROL UNIT MOT- MULTIPLE FUSE 1 PASSENGER-SIDE A-PILLAR FUSE BOX PNK WIRE REAR FUSE, RELAY MODULE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RIGHT OUTER FRONT BUMPER RADAR SENSOR SENS (+) SENS 2 SENS 1 SENS GND STEERING COLUMN MODULE CONTROL UNIT STOP LAMP SWITCH THROTTLE VALVE ACTUATOR VIO WIRE VIO/WHT WIRE YEL/BLU WIRE

BATTERY SENSOR BLK/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/VIO WIRE BRN/WHT WIRE COOLANT THERMOSTAT HEATING ELEMENT CYLINDER 1, 2 INTAKE CAMTRONIC ACTUATOR CYLINDER 3, 4 INTAKE CAMTRONIC ACTUATOR CYLINDER 5, 6 INTAKE CAMTRONIC ACTUATOR DC/DC CONVERTER CONTROL UNIT DIVERT AIR SWITCHOVER VALVE ELECTRIC ADDITIONAL COMPRESSOR ELECTRIC REFRIGERANT COMPRESSOR ELECTRICAL POWER STEERING CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT EXHAUST CAMSHAFT SOLENOID FAN MOTOR IGNITION COIL CYLINDER 1 IGNITION COIL CYLINDER 2 IGNITION COIL CYLINDER 3 IGNITION COIL CYLINDER 4 IGNITION COIL CYLINDER 5 IGNITION COIL CYLINDER 6 INTAKE CAMSHAFT SOLENOID ME-SFI (ME) CONTROL UNIT NCA WIRE POTENTIAL DISTRIBUTOR PTC HEATER BOOSTER REAR WINDOW HEATER STARTER GENERATOR CONTROL UNIT W/ POWER VARIANT UPRATED 1

AIR BODY CONTROL RELAY ALL-WHEEL DRIVE CONTROL UNIT BACKUP RELAY BLK/RED WIRE BRN WIRE CPC RELAY DRIVE UNIT CONTROL UNIT DRIVETRAIN CONTROL UNIT ELECTRIC REFRIGERANT COMPRESSOR ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT TERMINAL 15 RELAY EXTERIOR LIGHTS SWITCH FROM ENGINE COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 8) FRONT SAM CONTROL UNIT FUSE 106 FUSE 108 FUSE 109 FUSE 110 FUSE 111 FUSE 112 FUSE 117 FUSE 121 FUSE 123 FUSE 124 FUSE 125 FUSE 126 FUSE 128 FUSE 129 FUSE 130 FUSE 133 GRN/RED WIRE LEFT FRONT LAMP UNIT ME-SFI (ME) CONTROL UNIT N/A PNK/RED (OR GRN/RED) WIRE PNK/RED WIRE RED WIRE RED/BLK WIRE RED/WHT (OR RED) WIRE RIGHT FRONT LAMP UNIT STARTER CIRCUIT 50 RELAY TO BACKUP RELAY (DIAGRAM 4 OF 8) TO PARK PAWL CAPACITOR (DIAGRAM 4 OF 8) W/ DYNAMIC LED HEADLAMPS W/ STATIC LED HEADLAMPS WIPER MOTOR

ALARM SIREN AUDIO/COMMAND CONTROL PANEL DIAGNOSTIC CONNECTOR DRIVER-SIDE INSTRUMENT PANEL BUTTON GROUP DRIVETRAIN CONTROL UNIT FM, AM, CL, DAB, KEYLESS-GO ANTENNA AMPLIFIER FROM ENGINE COMPARTMENT PREFUSE BOX (DIAGRAM 1 OF 8) FROM MULTIPLE FUSE 1 (DIAGRAM 5 OF 8) FUSE 1 FUSE 2 FUSE 3 FUSE 308 FUSE 309 FUSE 311 FUSE 312 FUSE 313 FUSE 318 FUSE 319 FUSE 320 FUSE 321 FUSE 322 FUSE 4 FUSE 5 FUSE 6 HEAD-UP DISPLAY INSTRUMENT CLUSTER KEYLESS-GO CONTROL UNIT ME-SFI (ME) CONTROL UNIT MULTIMEDIA CONNECTION UNIT MULTIPLE FUSE 2 MULTIPLE FUSE 3 NCA WIRE PERFUME ATOMIZER GENERATOR REAR AIR CONDITIONING OPERATING UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SLIDING ROOF CONTROL MODULE SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT THEFT DETECTION SYSTEM ELECTRICAL CONNECTOR TO ELECTRONIC IGNITION SWITCH CONTROL UNIT (DIAGRAM 4 OF 8) TOUCHPAD (IF EQUIPPED) W/ AIR BALANCE PACKAGE W/ INTERIOR MONITORING

58 D BATTERY DISCONNECT SWITCH RELAY BATTERY SENSOR BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L CIRCUIT 30 TERMINAL BLOCK COMPUTER DATA LINES SYSTEM DC/DC CONVERTER CONTROL UNIT DRIVER-SIDE FUSE, RELAY MODULE ELECTRONIC IGNITION SWITCH CONTROL UNIT FLEX-E BP PNK FLEX-E BM WIRE FRONT SAM CONTROL UNIT FULLY INTEGRATED TRANSMISSION CONTROL ELECTRIC CONTROL UNIT FUSE 202 FUSE 6 GRN WIRE INTEGRATED STARTER GENERATOR KEYLESS GO START/STOP BUTTON LIN ME-SFI (ME) CONTROL UNIT MPAC U MPAC V MPAC X MPAC Y MPAC Z NCA WIRE ON-BOARD ELECTRICAL SYSTEM BATTERY ORG/ WIRE RED WIRE RED/BLK WIRE RED/WHT (OR RED) WIRE RED/WHT WIRE SIG SIG (1) SIG (2) SIG 3 STARTER GENERATOR CONTROL UNIT STEERING COLUMN MODULE CONTROL UNIT WHT WIRE YEL WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/YEL WIRE BLU/YEL WIRE BRN WIRE BRN/YEL WIRE CAN H H CAN H L COMPUTER DATA LINES SYSTEM CRASH DRIVER BELT FORCE LIMITER DRIVER ETR (GUS) SQUIB DRIVER SEAT SIDE PRE-SAFE PULSE SQUIB FRONT PASSENGER BELT FORCE LIMITER FRONT PASSENGER SEAT SIDE PRE-SAFE PULSE SQUIB FRONT PASSENGER SIDE BAG SQUIB GRN WIRE GRY WIRE GRY/YEL WIRE LEFT SIDE BAG SENSOR ME-SFI (ME) CONTROL UNIT NCA WIRE PNK/BLK WIRE RED/YEL WIRE RIGHT ACTIVE ENGINE HOOD SQUIB SIG SIG GND SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT VIO WIRE VIO/WHT WIRE VIO/YEL WIRE

AAG BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN C H CAN C L COMPUTER DATA COMPUTER DATA LINES SYSTEM CRASH ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FUEL PRESSURE SENSOR FUEL PUMP (FP) FUEL PUMP CONTROL UNIT (UNDER RIGHT REAR SEAT) FUEL TANK DIAGNOSTIC MODULE FUSE 101 FUSE 102 FUSE 103 FUSE 104 FUSE 5 GRN WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/PNK WIRE HEAT GND HECK R HOT AT ALL TIMES LEFT FUEL TANK FUEL LEVEL INDICATOR FILL LEVEL SENSOR LINES SYSTEM ME-SFI (ME) CONTROL UNIT MPAC U MPAC V MPAC W NCA WIRE ORG/BLU WIRE PNK/BLK WIRE PNK/RED WIRE PUMP PUMP GND PUMP SIG REAR SAM CONTROL UNIT RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE REL (+) RIGHT FUEL TANK FUEL LEVEL INDICATOR FILL LEVEL SENSOR SIG STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TO CPC RELAY (DIAGRAM 9 OF 9) VALVE GND VIO/ORG WIRE VIO/WHT WIRE WHT WIRE YEL WIRE