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Electrical function schematic for heated rear window (HHS) - PE67.29-U-2052-99MAA

Code: Designation: Position:
1 Circuit 15, status 8 F
2 Outside temperature, signal 6 E
3 Vehicle speed, signal 6 D
4 Heated rear window, request 12 D
5 Rear window heater relay, actuation 14 F
6 Rear window heater, actuation 14 J
7 Rear window heater status indication, signal 10 D
A1 Instrument cluster 2 C
A8/1 Transmitter key 9 J
B14 Ambient temperature display temperature sensor 5 F
CAN B Interior CAN 4 D
CAN B Interior CAN 7 G
CAN B Interior CAN 11 D
F4kM Rear window defroster relay 13 H
N10/8 Rear SAM control module 13 C
N22 AAC push-button control module 8 C
N22/7 Comfort AAC push-button control module 8 C
N22/7s1 Rear window defroster switch 8 C
N22s1 Rear window defroster switch 8 B
N73 EIS [EZS] control unit 8 J
R1 Heated rear window 14 K
U29 Valid for AAC [KLA] 6 B
U673 Valid for Comfort AAC [K-KLA] 6 B
Fig 1: Heated Rear Window (HHS) Electrical Function Schematic
G10117610Courtesy of MERCEDES-BENZ USA