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Home >> Mercedes Benz >> 2020 >> GLC300 Base >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Frame, Trailer Operation - 253 Chassis >> Wiring Diagrams >> Trailer Recognition Control Unit Wiring Diagram >> Trailer Recognition Control Unit Wiring Diagram - PE31.19-P-2101-97FCA

Trailer Recognition Control Unit Wiring Diagram - PE31.19-P-2101-97FCA

Model 253 (except 253.99) as of model year 2020 

with code 550 (Trailer coupling) 

Control unit N28/1 

Code: Designation: Position:
AO Use of wiring diagrams 113L
A63 Trailer hitch release 31L
CAN B Interior CAN 63K
Code 460 Canada version 34D
Code 460 Canada version 43D
Code 460 Canada version 69D
Code 460 Canada version 76D
Code 460 Canada version 82D
Code 494 USA version 34D
Code 494 USA version 43D
Code 494 USA version 69D
Code 494 USA version 76E
Code 494 USA version 82E
Code L LEFT-HAND DRIVE 75D
Code R RIGHT-HAND DRIVE 81D
F1/3 Passenger-side A-pillar fuse box 55L
F1/3f307 Fuse 307 54L
K40/5 Rear fuse and relay module 21L
K40/5 Rear fuse and relay module 12L
K40/5f407 Fuse 407 10L
K40/5f444 Fuse 444 20L
K40/5f445 Fuse 445 15L
K40/5f446 Fuse 446 19L
K40/5f447 Fuse 447 17L
K40/5f448 Fuse 448 18L
K40/5f452 Fuse 452 8L
K40/5f461 Fuse 461 11L
K40/5f468 Fuse 468 6L
K40/5f471 Fuse 471 7L
N10/8 Rear SAM control unit 62L
N28/1 Trailer recognition control unit 4A
N28/1 Trailer recognition control unit 12A
N28/1 Trailer recognition control unit 20A
N28/1 Trailer recognition control unit 28A
N28/1 Trailer recognition control unit 36A
N28/1 Trailer recognition control unit 44A
N28/1 Trailer recognition control unit 52A
N28/1 Trailer recognition control unit 60A
N28/1 Trailer recognition control unit 68A
N28/1 Trailer recognition control unit 74A
N28/1 Trailer recognition control unit 91A
N28/1 Trailer recognition control unit 104A
N69/1 Left front door control unit 79A
N69/2 Right front door control unit 85A
S142/2 Trunk lid/liftgate fully electric trailer hitch switch 72L
S142/3 Driver door fully electric trailer hitch switch 84L
S142/3 Driver door fully electric trailer hitch switch 77L
W15/5 Left front footwell ground point 53L
W3/11 Left rear wheel well ground point 69L
W3/8 Right rear wheel well ground point 42L
W3/8 Right rear wheel well ground point 49L
W3/8 Right rear wheel well ground point 24E
X58 Trailer socket 38L
X58/11 Trailer socket (7-pin) 46L
X58/28 Electric Brake Control electrical connector 51L
X58/33 Vehicle interior/trailer hitch electrical connector 49H
X58/33 Vehicle interior/trailer hitch electrical connector 41H
Z58/8z1 Trailer hitch circuit 31 connector sleeve 30G
G14474702Courtesy of MERCEDES-BENZ USA
G14474703Courtesy of MERCEDES-BENZ USA
G14474704Courtesy of MERCEDES-BENZ USA
G14474705Courtesy of MERCEDES-BENZ USA
G14474706Courtesy of MERCEDES-BENZ USA
G14474707Courtesy of MERCEDES-BENZ USA
G14474708Courtesy of MERCEDES-BENZ USA