Model | 220.025/026/028/063/065/067/070/075/083/084/087/125/126/128/165/167/170/175/176/178/183/184/187 1# as of 9/1/02 |
with code 550 (Trailer coupling) | |
except code 772 (AMG styling - Front spoiler, side skirts) | |
except code 855 (TELE AID) | |
except code 979 (Special protection MB Guard) | |
Mechanical swing-away trailer hitch | |
Model | 220.026/028/063/065/070/075/126/128/165/170/175/178 1# up to 8/31/02 |
with code 550 (Trailer coupling) | |
except code 772 (AMG styling - Front spoiler, side skirts) | |
Mechanical swing-away trailer hitch |
P31.19-2112-09
4 | Black, 6-pin connector | gn | Green line | |
6 | White, 2-pin coupling | ws | White line | |
7 | Fuse holder (2 pcs.) | F4 | Rear fuse box | |
br | Brown line | K40/5 | Rear fuse and relay module | |
br/rt | Brown/red line |
1 | Wiring harness for trailer coupling socket |
2 | Black, 20-pin coupling |
3 | Black, 6-pin connector |
5 | Rubber grommet |
N28/1 | Trailer recognition control unit |
W7/1 | Ground (right taillamp in trunk) |
X58 | Trailer hitch socket (13-pin) |
P31.19-2114-06
Danger | Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC. | No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers. | |
Topical note | Notes on battery | ||
| Remove/install | ||
1 | Disconnect battery ground line | ||
2 | Remove rear bumper | ||
3 | Remove trailer hitch socket housing | ||
Unscrew trailer hitch socket (13-pinX58) only and remove cable tie. | |||
4 | Remove operating lever for mechanically swiveling trailer hitch | ||
5 | Remove remote trunk closing hydraulic pump | Only model 220 with code 881 (Remote trunk closing) | |
Place remote trunk closing hydraulic pump to one side. Do not disconnect electrical and hydraulic lines. | |||
6 | Remove rear seat backrest |
| |
Model 220.0/1 with code 223 (Electric rear seat backrest adjustment and head restraints). Only right rear seat backrest. | |||
Model 220.0/1 with code 224 (Individual rear seat system design). Only right rear seat backrest. | |||
7 | Remove rear seat control unit |
| |
Place rear seat control unit to one side. Do not disconnect electrical connectors. | |||
8 | Remove rear SAM control unit with fuse and relay box | ||
Place SAM control unit with fuse and relay box in rear passenger compartment to one side. Do not disconnect electrical connectors. | |||
9 | Disconnect white, 2-pin coupling (6) from trailer hitch socket wiring harness (1) from slot K2 of rear fuse and relay module (K40/5) | ||
10 | Unscrew brown line (BN) with round cable lug from CAN and rear SAM ground shield (W50/2) | Only vehiclesup to ident no. A229601. | |
The CAN and rear SAM ground shield (W50/2) is located in the immediate vicinity of the rear fuse and relay module (K40/5). | |||
11 | Unclip dark blue fuse holder (7) of trailer hitch socket wiring harness (1) from rear fuse box (F4) | Two fuse holders. | |
12 | Disconnect black, 6-pin coupling (4) from slot 1 of rear SAM control unit (N10/8) | Rear SAM control unit (N10/8) is fastened to the bottom of the rear fuse and relay module (K40/5). | |
13.1 | Remove white line (WH) and green line (GN) from black, 6-pin coupling (4) from vehicle's wiring harness | Only vehicles up to ident no. A229601. | |
White line (WH) from slot 5, green line (GN) from slot 6. | |||
13.2 | Remove brown line (BN) and brown/red line (BN/RD) from black, 6-pin coupling (4) from vehicle's wiring harness | Only vehicles as of ident no. A229602. | |
Brown line (BN) from slot 5, brown/red line (BN/RD) from slot 6. | |||
14 | Disconnect trailer hitch socket wiring harness (1) from vehicle's wiring harness and route from rear through cable duct into trunk | ||
15 | Disconnect black, 20-pin coupling (2) and black, 6-pin coupling (3) from trailer recognition control unit (N28/1) | ||
16 | Unscrew brown line with round cable lug from right taillamp trunk ground (W7/1) | ||
17 | Remove feed-through grommet (5) | ||
18 | Detach trailer hitch socket wiring harness (1) and pull out toward rear through body opening below right taillamp | Avoid any damage caused by sharp body edges. | |
19 | Install in the reverse order | ||
20 | Conduct function check on mechanical swing-away trailer hitch | ||
21 | Perform function check of lighting system signals on 13-pin trailer hitch socket (X58) | ||
|
Referenced documents
- ah5410p000101a Notes on battery
- ah5410p000101a
- an3119p810006mn Perform function test of light signals at the trailer hitch socket.
- ar3111p8010m
- ar3111p8010m Control lever for mechanical swing-away trailer hitch, removal and installation
- ar3119p1350m Remove/install trailer hitch socket housing
- ar3119p1450m Carry out function check of mechanically swiveling trailer hitch
- ar5410p0003i Disconnecting and connecting ground cable at battery
- ar5421p1259i Removing and installing SAM control module with fuse and relay box in rear
- ar8820p2200ma Remove/install rear bumper
- ar8850p5070n Removing and installing hydraulic pump for trunk lid remote control
- ar9112p1620m Remove/install rear-seat backrest
- ar9112p1620ma Remove/install rear-seat backrest
- ar9112p1620mb Remove/install rear-seat backrest
- ar9129p1570m Remove/install rear seat control module
- as5410z000101a Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of