Checking trailer lamps
When connecting a trailer – check that the trailer lamps work before departure.
Checking trailer lamps
Automatic checking
After a trailer is connected electrically, it is possible to check that the trailer lamps are working via an automatic lamp activation. The function helps the driver check that the trailer lamps are working before starting off.
- The car must be switched off to perform the check.
- When a trailer is connected to the towbar, the Automatic Trailer Lamp Check message is shown in the driver display.
- Confirm the message by pressing the right-hand steering wheel keypad’s O button.
- The lamp check starts.
- Exit the car to check lamp functionality.
- All trailer lamps start to flash – then the lamps are switched on one at a time.
- Visually check that all lamps available on the trailer are operational.
- After a moment, all lamps on the trailer flash again.
- The check is complete.
Switching off automatic checking
The automatic checking function can be switched off in the centre display.
- Press Settings in the top view.
- Press .
- Deselect Automatic Trailer Lamp Check.
Manual checking
If the automatic checking is switched off then it is possible to start the check manually.
- Press Settings in the top view.
- Press .
- Select Manual Trailer Lamp Check.
- The lamp check starts. Exit the car to check lamp functionality.
If one or more of the trailer’s direction indicators or brake light bulbs is broken, the driver display shows a symbol and a message. Other lights on the trailer must be checked manually by the driver before setting off.
| Symbol | Message |
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If any lamp for the trailer’s direction indicators is broken, the driver display symbol for direction indicators will also flash more quickly than normal.