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.
Safety function
The signal from the reset contact on the wiper motor (also the rear window wiper on the E61) is used as an anti-jamming function for the wiper motor. If the signal from the resetting switch is not present when the wiper motor is switched on, the wiper motor is switched off again.
The wiper motor can then only be switched on one more time.
After that, the wiper motor can only be switched on subject to the following conditions:
- 3 minutes have elapsed
- Terminal R OFF followed by Terminal R ON
The wiper motor can only be switched on by operating the wiper switch (not automatically due to risk of injury).
Once the anti-jamming function has been activated, the windscreen-washer and headlamp-washer pumps can be operated 3 more times.
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.