Remove/Install Trailer Recognition Control Unit - AR31.19-P-1300ME
Model 167
With Code 550 (Trailer coupling)
MODIFICATION NOTES
| 02.04.2019 | Function check added. | Operation steps 8 and 9 |
Fig 1: Trailer Recognition Control Unit Components Location - Model 167 With Code 550 (Shown On Model 167.1)
Shown On Model 167.1
| Risk of injury caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. | No parts of the body or limbs should be within the operating area when the components are moving. | AS00.00-Z-0011-01A | |
| 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 | ||
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Remove/install | |||
| 1 | Carry out commissioning of trailer recognition control unit (N28/1). | If the trailer recognition control unit (N28/1) is replaced. | |
| AD00.00-P-2000-06ME | |||
| 2 | Switch off ignition and store transmitter key outside of transmitter range (min. 2 m). | ||
| 3.1 | Remove right service flap in load compartment. | Model 167.1 | |
| 3.2 | Remove right load compartment cover. | Model 167.3/9 Model 167.9 except code M036 (Maybach version) |
AR68.30-P-1185MEX |
| Model 167.3 | AR68.30-P-1185MEC | ||
| 4 | Release and disconnect electrical connectors from trailer recognition control unit (N28/1). | ||
| 5 | Remove nuts (1). | ||
| 6 | Remove trailer recognition control unit (N28/1). | ||
| 7 | Install in the reverse order. | ||
| Check | |||
| 8 | Check function of electrically unlocked trailer coupling. | Model 167 with code 550 (Trailer coupling) except code 460 (Canada version) except code 494 (US version) except code 496 (Mexico version) except code 625 (Australia specification) |
AR31.19-P-1451ME |
| 9 | Perform function check of light signals on trailer socket. |