Remove/install trailer recognition control unit - AR31.19-P-1300GR
MODEL 463.202/222/237/243/244/245/247/250/254/270/303/306/309/322/323/332/333/336/340/341/346 with CODE (Q55) Trailer hitch with reinforced low ball head
MODEL 463.236/248 with CODE (Q55) Trailer hitch with reinforced low ball head except CODE (979) Special protection version
| Remove/install | |||
|---|---|---|---|
| 1 | Deactivate service mode in Telematic Alarm Identification on Demand (emergency call system) (TELE AID) | Vehicles with code (ET2) Tele-Aid car telephone emergency call system | AR82.95-P-0005-03GR |
| Notes regarding the Tele-Aid emergency call system | AH82.95-P-0001-01GA | ||
| Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries | No fire, sparks, open flames or smoking Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. | AS54.10-Z-0001-01A | |
| 2 | Disconnect battery ground line | AR54.10-P-0003G | |
| Notes on battery | AH54.10-P-0001-01A | ||
| 3.1 | Remove luggage compartment cover | Model 463.236/237/243/248/270/332/333/341 with code (V53) Stowage box and luggage compartment cover | |
| 3.2 | Remove side stowage box cover at left rear | Model 463.222/244/247/322/332/336/340 with code (V53) Stowage box and luggage compartment cover | AR68.72-P-0010GK |
| 4 | Remove luggage compartment cover with draft stop (A) | Model 463.202/250/254/303/306/309 |
|
| 5 | Remove draft stop mounting bracket (B) from left side wall cover | Model 463.202/250/254/303/306/309 | |
| 6 | Remove plastic frame from CD changer | ||
| 7 | Detach floor covering from wheel well | ||
| 8 | Remove cover panel under the floor covering | ||
| 9 | Remove TV tuner | Vehicles with code TV tuner | AR82.85-P-7366GR |
| 10 | Unscrew nuts (1) | ||
| 11 | Separate the electrical connectors (2) on the trailer recognition control unit (N28/1) | ||
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| 12 | Remove trailer recognition control unit (N28/1) | ||
| 13 | Install in the reverse order | ||
| 14 | Activate service mode in TELE AID | Vehicles with code (ET2) Tele-Aid car telephone emergency call system | AR82.95-P-0005-03GR |
| 15 | Read out and erase the fault memory using Star Diagnosis | AD00.00-P-2000-04A |