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Home >> Mercedes Benz >> 2021 >> E53 AMG 2D Convertible >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments - 238 Chassis (6 Of 6) >> Wiring Diagrams >> Attention Assist Electrical Function Schematic >> Attention Assist Electrical Function Schematic - PE54.71-P-2054-97DCA

Attention Assist Electrical Function Schematic - PE54.71-P-2054-97DCA

Model 238 up to model year 2021 

Code: Designation: Position:
1 Engine running, signal 26J
1 Engine running, signal 29F
10 High-speed video link video signal data transfer, signal 16J
11 Time, signal 25H
11 Time, signal 24D
12 Light sensor, status 22H
12 Light sensor, status 25H
12 Light sensor, status 23F
12 Light sensor, status 20G
13 Steering wheel angle sensor, signal 37K
14 Steering wheel angle, signal 27K
15 Steering wheel velocity, signal 27K
16 Speed, turn rate and lateral acceleration, signal 24K
17 Operation, signal 14F
17 Operation, signal 14E
17 Operation, signal 25H
17 Operation, signal 17F
17 Operation, signal 22D
17 Operation, signal 26C
17 Operation, signal 36G
17 Operation, signal 38C
17 Operation, signal 39G
17 Operation, signal 7F
17 Operation, signal 7E
18 Steering column adjustment switch, status 27K
18 Steering column adjustment switch, status 35L
19 Combination switch, status 28K
19 Combination switch, status 34K
2 Drivetrain operational, signal 26H
2 Drivetrain operational, signal 29F
20 CRUISE CONTROL lever, signal 28K
20 CRUISE CONTROL lever, signal 35J
3 ATTENTION ASSIST, status 25J
3 ATTENTION ASSIST, status 23D
3 ATTENTION ASSIST, status 29A
4 Instrument cluster message, request 25F
4 Instrument cluster message, request 27B
5 Warning message issue, request 17F
5 Warning message issue, request 25F
5 Warning message issue, request 27B
6 Warning tone, request 25G
6 Warning tone, request 27B
7 Speaker, actuation 27C
8 Multifunction steering wheel button group, signal 26K
8 Multifunction steering wheel button group, signal 26B
8 Multifunction steering wheel button group, signal 25C
8 Multifunction steering wheel button group, signal 36H
8 Multifunction steering wheel button group, signal 38C
8 Multifunction steering wheel button group, signal 39H
9 Audio/COMAND display, actuation 14J
A1 Instrument cluster 29B
A105 Touchpad 9H
A105 Touchpad 9C
A26/17 Head unit 15E
A40/8 Audio/COMAND display 15J
A40/9 Audio/COMAND control panel 9F
B25/20 Driver hands-free system microphone 12F
B38/2 Rain/light sensor with additional functions 22G
B38/2b2 Light sensor 21J
CAN A Telematics CAN 15E
CAN A Telematics CAN 14H
CAN B Interior CAN 20E
CAN C1 Drive train CAN 30F
CAN H Vehicle dynamics CAN 22K
CAN HMI User interface CAN 16E
CAN HMI User interface CAN 20E
CAN HMI User interface CAN 18A
CAN HMI User interface CAN 26A
CAN HMI User interface CAN 25B
CAN LR Steering wheel CAN 38G
Code 275 Memory package 32L
Code 446 Touchpad only 7C
Code 448 Touchpad 8H
Flex E Chassis FlexRay 27K
Flex E Chassis FlexRay 26D
Flex E Chassis FlexRay 26E
Flex E Chassis FlexRay 24G
Flex E Chassis FlexRay 32K
Flex E Chassis FlexRay 33D
H4/61 Instrument cluster speaker 26C
HSVL High-speed video link 16H
LIN A3 LCP LIN 5F
LIN A3 LCP LIN 5E
LIN A3 LCP LIN 5E
LIN B16 Rain and light sensor LIN 21G
LIN E1 Steering LIN 36G
N10/6 Front SAM control unit 19F
N127 Drivetrain control unit 31E
N135 Steering wheel electronics 37D
N135 Steering wheel electronics 39D
N2/10 Supplemental restraint system control unit 20K
N3/10 ME-SFI [ME] control unit 31G
N3/9 CDI control unit 28G
N30/4 Electronic Stability Program control unit 25J
N49 Steering wheel angle sensor 37L
N72/1 Upper control panel control unit 2G
N72/1s58 Vehicle button 3G
N72/4 Left lower control panel 2A
N72/5 Right lower control panel 4A
N73 Electronic ignition switch control unit 24D
N80 Steering column module control unit 36J
S163/1 Instrument cluster multifunction steering wheel button group 36A
S163/1s10 Instrument cluster finger navigation pad 36A
S163/2 Head unit multifunction steering wheel button group 39B
S163/2s10 Head unit finger navigation pad 39A
S163/2s13 "Back" button 39A
S4 Combination switch 33K
S40/4 Cruise control lever 33J
S59 Steering column adjustment switch 34L
U1056 Valid except code 446 (Touchpad only) 7F
U74 Valid for diesel engines 27G
U75 Valid for gasoline engines 30G
G15470645Courtesy of MERCEDES-BENZ USA
G15470646Courtesy of MERCEDES-BENZ USA
G15470647Courtesy of MERCEDES-BENZ USA