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.
Headlamp washer system (option 502)
When the dipped headlights are switched on, the headlamps are washed every 10th time the windscreen washer is operated.
After ignition ON and dipped beam headlights ON:
The headlamps are cleaned at the same time as the first wash movement for the windscreen.
Wash-cycle sequence:
- 0.7 seconds ON
- 1.3 seconds OFF
- 0.7 seconds ON
After the headlamps have been washed, they cannot be washed again for another 10 minutes (repeat lock).
The repeat lock is reset by Terminal R status OFF.
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.