Mercedes-Benz E-class W212/S212/C207/A207 facelift (2013-2016) steering wheel electronics (inside steering wheel) Wiring diagrams

10 4 9 5 3 8 1 7 2 6 +,- OK R,RTN U-MLL-L 58 GND U-MFL-R +,- MUTE TEL ACCEPT/ TERMINATE PHONE CALL BUTTON ANTENNA AMPLIFIER BACK, VOICE CONTROL SYSTEM OFF BUTTON BLK WIRE BLU WIRE BLUETOOTH ANTENNA BRN WIRE BRN/ORG WIRE BUTTONS +, - SETTING SPECIFIC FUNCTION, VOLUME CONTROL COMPUTER DATA LINES SYSTEM FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT (PART OF STEERING COLUMN MODULE) GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE HANDS-FREE SYSTEM MICROPHONE INSIDE REARVIEW MIRROR INSIDE STEERING WHEEL) KEYLESS GO ANTENNA AMPLIFIER LEFT "C" PILLAR) LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP MUTE MUTE BUTTON NCA WIRE OK BUTTON OK BUTTON BACK BUTTON ORG/ WIRE PNK 1 2 3 4 WIRE PNK WIRE PNK/BLU WIRE R,RTN RED WIRE RIGHT FRONT DOOR BASS SPEAKER RIGHT FRONT DOOR TWEETER RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL BACK, VOICE FORWARD/ CONTROL SYSTEM BACK BUTTON OFF BUTTON SCROLL FORWARD/ SEDAN STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) SYSTEM SELECTION BUTTON TEL U MFL R U MLL L VOICE CONTROL SYSTEM ON BUTTON VOICE CONTROL SYSTEM SELECTION SYSTEM ON BUTTON BUTTON W/ NAVIGATION WAGON WHT WIRE YEL WIRE

10 4 9 5 3 8 1 7 2 6 +,- OK R,RTN U-MLL-L 58 GND U-MFL-R +,- MUTE TEL ACCEPT/ TERMINATE PHONE CALL BUTTON ANTENNA AMPLIFIER BACK, VOICE CONTROL SYSTEM OFF BUTTON BLK WIRE BLU WIRE BLUETOOTH ANTENNA BRN WIRE BRN/ORG WIRE BUTTONS +, - SETTING SPECIFIC FUNCTION, VOLUME CONTROL COMPUTER DATA LINES SYSTEM FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT (PART OF STEERING COLUMN MODULE) GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE HANDS-FREE SYSTEM MICROPHONE INSIDE REARVIEW MIRROR INSIDE STEERING WHEEL) KEYLESS GO ANTENNA AMPLIFIER LEFT "C" PILLAR) LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP MUTE MUTE BUTTON NCA WIRE OK BUTTON OK BUTTON BACK BUTTON ORG/ WIRE PNK 1 2 3 4 WIRE PNK WIRE PNK/BLU WIRE R,RTN RED WIRE RIGHT FRONT DOOR BASS SPEAKER RIGHT FRONT DOOR TWEETER RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL BACK, VOICE FORWARD/ CONTROL SYSTEM BACK BUTTON OFF BUTTON SCROLL FORWARD/ SEDAN STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) SYSTEM SELECTION BUTTON TEL U MFL R U MLL L VOICE CONTROL SYSTEM ON BUTTON VOICE CONTROL SYSTEM SELECTION SYSTEM ON BUTTON BUTTON W/ NAVIGATION WAGON WHT WIRE YEL WIRE

10 4 9 5 3 8 1 7 2 6 +,- OK R,RTN U-MLL-L 58 GND U-MFL-R +,- MUTE TEL ACCEPT/ TERMINATE PHONE CALL BUTTON ANTENNA AMPLIFIER BACK, VOICE CONTROL SYSTEM OFF BUTTON BLK WIRE BLU WIRE BLUETOOTH ANTENNA BRN WIRE BRN/ORG WIRE BUTTONS +, - SETTING SPECIFIC FUNCTION, VOLUME CONTROL COMPUTER DATA LINES SYSTEM FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT (PART OF STEERING COLUMN MODULE) GLOBAL POSITIONING SYSTEM ANTENNA SPLITTER GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE HANDS-FREE SYSTEM MICROPHONE INSIDE REARVIEW MIRROR INSIDE STEERING WHEEL) KEYLESS GO ANTENNA AMPLIFIER LEFT "C" PILLAR) LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP MUTE MUTE BUTTON NCA WIRE OK BUTTON OK BUTTON BACK BUTTON ORG/ WIRE PNK 1 2 3 4 WIRE PNK WIRE PNK/BLU WIRE R,RTN RED WIRE RIGHT FRONT DOOR BASS SPEAKER RIGHT FRONT DOOR TWEETER RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL BACK, VOICE FORWARD/ CONTROL SYSTEM BACK BUTTON OFF BUTTON SCROLL FORWARD/ SEDAN STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) SYSTEM SELECTION BUTTON TEL U MFL R U MLL L VOICE CONTROL SYSTEM ON BUTTON VOICE CONTROL SYSTEM SELECTION SYSTEM ON BUTTON BUTTON W/ NAVIGATION WAGON WHT WIRE YEL WIRE

3 8 58 GND BLK WIRE BLK/WHT WIRE BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN-B H CAN-B L CENTER HORNS BUTTON CENTER HORNS BUTTON (SEDAN, WAGON) COMPUTER DATA LINES SYSTEM COUPE CONVERTIBLE DATA ENGINE COMPT) FANFARE HORN RELAY FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT (PART OF STEERING COLUMN MODULE) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE FUSE 13 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSIDE STEERING WHEEL) LEFT FANFARE HORN LEFT FANFARE HORN (BEHIND LEFT CORNER OF FRONT BUMPER) LEFT FANFARE HORN SYSTEM BUTTON LEFT FANFARE HORN SYSTEM BUTTON (SEDAN, WAGON) LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP (COUPE, CONVERTIBLE) RED WIRE RED/BLU WIRE RELAY RIGHT FANFARE HORN RIGHT FANFARE HORN (BEHIND RIGHT CORNER OF FRONT BUMPER) RIGHT FANFARE HORN SYSTEM BUTTON RIGHT FANFARE HORN SYSTEM BUTTON (SEDAN, WAGON) RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP (COUPE, CONVERTIBLE) SEDAN WAGON SEDAN, WAGON COUPE, CONVERTIBLE STEERING COLUMN MODULE CONTROL UNIT STEERING COLUMN MODULE CONTROL UNIT (TOP OF STEERING COLUMN) STEERING WHEEL ELECTRONICS STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) WHT WIRE

1 2 ALDW+ ALDW- 1 2 SCROLL FORWARD/ BACK BUTTON 10 4 +, - OK 2 3 GND LSP- 2 3 LSP+ GND 4 6 BACK, VOICE CONTROL SYSTEM OFF BUTTON 5 8 U-MLL-L GND 7 2 +, - MUTE ACCEPT/TERMINATE PHONE CALL BUTTON ALDW - BACK, VOICE CONTROL SYSTEM OFF BUTTON BLK WIRE BLU WIRE BRN WIRE BUTTON +, - SETTING OF SPECIFIC FUNCTIONS, VOLUME CONTROL BUTTON +, - SETTING OF SPECIFIC FUNCTIONS, VOLUME CONTROL 2 1 CENTER HORNS BUTTON GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE HEATER COIL HEATER COIL TEMPERATURE SENSOR INSIDE STEERING WHEEL) LEFT FANFARE HORN SYSTEM BUTTON LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP LSP + MUTE MUTE BUTTON NCA WIRE NTC- OK BUTTON PNK WIRE PNK/BLU WIRE R RETURN RED WIRE RIGHT FANFARE HORN SYSTEM BUTTON RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL FORWARD/ BACK BUTTON STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL DOWNSHIFT BUTTON (IF EQUIPPED) STEERING WHEEL ELECTRONICS STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) STEERING WHEEL HEATER STEERING WHEEL HEATER (IF EQUIPPED) STEERING WHEEL UPSHIFT BUTTON STEERING WHEEL UPSHIFT BUTTON (IF EQUIPPED) STEERING WHEEL VIBRATION MOTOR SYSTEM SELECTION BUTTON TEL U MFL R U MLL L VOICE CONTROL 4 5 SYSTEM ON PNK BUTTON WIRE VOICE CONTROL SYSTEM ON BUTTON WHT WIRE YEL WIRE

1 2 ALDW+ ALDW- 1 2 SCROLL FORWARD/ BACK BUTTON 10 4 +, - OK 2 3 GND LSP- 2 3 LSP+ GND 4 6 BACK, VOICE CONTROL SYSTEM OFF BUTTON 5 8 U-MLL-L GND 7 2 +, - MUTE ACCEPT/TERMINATE PHONE CALL BUTTON ALDW - BACK, VOICE CONTROL SYSTEM OFF BUTTON BLK WIRE BLU WIRE BRN WIRE BUTTON +, - SETTING OF SPECIFIC FUNCTIONS, VOLUME CONTROL BUTTON +, - SETTING OF SPECIFIC FUNCTIONS, VOLUME CONTROL 2 1 CENTER HORNS BUTTON GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE HEATER COIL HEATER COIL TEMPERATURE SENSOR INSIDE STEERING WHEEL) LEFT FANFARE HORN SYSTEM BUTTON LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP LSP + MUTE MUTE BUTTON NCA WIRE NTC- OK BUTTON PNK WIRE PNK/BLU WIRE R RETURN RED WIRE RIGHT FANFARE HORN SYSTEM BUTTON RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL FORWARD/ BACK BUTTON STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL DOWNSHIFT BUTTON (IF EQUIPPED) STEERING WHEEL ELECTRONICS STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) STEERING WHEEL HEATER STEERING WHEEL HEATER (IF EQUIPPED) STEERING WHEEL UPSHIFT BUTTON STEERING WHEEL UPSHIFT BUTTON (IF EQUIPPED) STEERING WHEEL VIBRATION MOTOR SYSTEM SELECTION BUTTON TEL U MFL R U MLL L VOICE CONTROL 4 5 SYSTEM ON PNK BUTTON WIRE VOICE CONTROL SYSTEM ON BUTTON WHT WIRE YEL WIRE

1 2 ALDW+ ALDW- 1 2 SCROLL FORWARD/ BACK BUTTON 10 4 +, - OK 2 3 GND LSP- 2 3 LSP+ GND 4 6 BACK, VOICE CONTROL SYSTEM OFF BUTTON 5 8 U-MLL-L GND 7 2 +, - MUTE ACCEPT/TERMINATE PHONE CALL BUTTON ALDW - BACK, VOICE CONTROL SYSTEM OFF BUTTON BLK WIRE BLU WIRE BRN WIRE BUTTON +, - SETTING OF SPECIFIC FUNCTIONS, VOLUME CONTROL BUTTON +, - SETTING OF SPECIFIC FUNCTIONS, VOLUME CONTROL 2 1 CENTER HORNS BUTTON GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE HEATER COIL HEATER COIL TEMPERATURE SENSOR INSIDE STEERING WHEEL) LEFT FANFARE HORN SYSTEM BUTTON LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP LSP + MUTE MUTE BUTTON NCA WIRE NTC- OK BUTTON PNK WIRE PNK/BLU WIRE R RETURN RED WIRE RIGHT FANFARE HORN SYSTEM BUTTON RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL FORWARD/ BACK BUTTON STEERING WHEEL DOWNSHIFT BUTTON STEERING WHEEL DOWNSHIFT BUTTON (IF EQUIPPED) STEERING WHEEL ELECTRONICS STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) STEERING WHEEL HEATER STEERING WHEEL HEATER (IF EQUIPPED) STEERING WHEEL UPSHIFT BUTTON STEERING WHEEL UPSHIFT BUTTON (IF EQUIPPED) STEERING WHEEL VIBRATION MOTOR SYSTEM SELECTION BUTTON TEL U MFL R U MLL L VOICE CONTROL 4 5 SYSTEM ON PNK BUTTON WIRE VOICE CONTROL SYSTEM ON BUTTON WHT WIRE YEL WIRE

1 2 MOST OUT MOST IN ANT ANT SHIELD AUX JACK ELECTRICAL CONNECTOR AUX JACK ELECTRICAL CONNECTOR (IF EQUIPPED) BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/ORG WIRE BRN/VIO WIRE BRN/WHT WIRE DIGITAL AUDIO BROADCASTING CONTROL UNIT GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE MOST MOST DATA BUS CIRCUIT MOST IN MOST MOST OUT MULTI-FUNCTION ANTENNA MUTE NCA WIRE ORG/ WIRE PNK WIRE PNK/BLU WIRE R,RTN RED WIRE RED/YEL WIRE RIGHT FRONT DOOR BASS SPEAKER RIGHT FRONT DOOR TWEETER RIGHT REAR DOOR BASS SPEAKER RIGHT REAR DOOR TWEETER SEDAN SHIELD STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) TEL U MFL R U MLL L VIO WIRE WAGON WAKE-UP WHT WIRE YEL WIRE

1 2 MOST OUT MOST IN ANT ANT SHIELD AUX JACK ELECTRICAL CONNECTOR AUX JACK ELECTRICAL CONNECTOR (IF EQUIPPED) BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/ORG WIRE BRN/VIO WIRE BRN/WHT WIRE DIGITAL AUDIO BROADCASTING CONTROL UNIT GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE MOST MOST DATA BUS CIRCUIT MOST IN MOST MOST OUT MULTI-FUNCTION ANTENNA MUTE NCA WIRE ORG/ WIRE PNK WIRE PNK/BLU WIRE R,RTN RED WIRE RED/YEL WIRE RIGHT FRONT DOOR BASS SPEAKER RIGHT FRONT DOOR TWEETER RIGHT REAR DOOR BASS SPEAKER RIGHT REAR DOOR TWEETER SEDAN SHIELD STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) TEL U MFL R U MLL L VIO WIRE WAGON WAKE-UP WHT WIRE YEL WIRE

1 2 MOST OUT MOST IN ANT ANT SHIELD AUX JACK ELECTRICAL CONNECTOR AUX JACK ELECTRICAL CONNECTOR (IF EQUIPPED) BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/ORG WIRE BRN/VIO WIRE BRN/WHT WIRE DIGITAL AUDIO BROADCASTING CONTROL UNIT GRN WIRE GRN/ORG WIRE GRN/WHT WIRE GRY/BLU WIRE MOST MOST DATA BUS CIRCUIT MOST IN MOST MOST OUT MULTI-FUNCTION ANTENNA MUTE NCA WIRE ORG/ WIRE PNK WIRE PNK/BLU WIRE R,RTN RED WIRE RED/YEL WIRE RIGHT FRONT DOOR BASS SPEAKER RIGHT FRONT DOOR TWEETER RIGHT REAR DOOR BASS SPEAKER RIGHT REAR DOOR TWEETER SEDAN SHIELD STEERING WHEEL ELECTRONICS (INSIDE STEERING WHEEL) TEL U MFL R U MLL L VIO WIRE WAGON WAKE-UP WHT WIRE YEL WIRE