Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Adjusting the trailer coupling
- E60, E61
To ensure that the trailer coupling remains pivoted in the limit position, the DC motor is energised briefly in the direction of the limit stop every 60 seconds.
The control unit for the electrically pivoted trailer coupling activates adjustment in the following conditions:
- Terminal 15 ON
- Ball head pivoted out in limit position
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.