Remove/Install Trailer Recognition Control Unit - AR31.19-P-1300FR
Model 257 with code 550 (Trailer coupling)
| Topical note | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notes on HANDS-FREE ACCESS | AH80.61-P-0001-01A | ||
| Remove/install | |||
| 1 | Remove right side paneling in trunk | AR68.30-P-4800FR | |
| 2 | Switch off ignition and store transmitter key outside of transmission range (min. 2 m) | ||
| 3 | Unscrew nuts (1) | ||
| 4 | Separate electrical connectors (2) | ||
| 5 | Remove trailer recognition control unit (N28/1) | ||
| 6 | Install in the reverse order | ||
| 7 | Perform initial startup of trailer recognition control unit (N28/1) | When replacing the trailer recognition control unit (N28/1). | |
| AD00.00-P-2000-06FR | |||
| Check | |||
| 8 | Perform function check of fully-electric trailer hitch | AR31.19-P-1452FR | |
| 9 | Perform function check of light signals at trailer socket |