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.
Testing
Wiper/Washer System: Testing — 1982 BMW 528e Automatic Trans Service Manual /Washer System >> Testing Wiper/Washer System: Testing Unplug wiper motor connector at motor. Check for battery voltage at Violet/Black wire. Move wiper switch to lower speed position. Voltage should be present at Black/White wire. If voltage is present and motor is properly grounded, wiper motor should operate. If motor fails to operate, it is defective. Check fuses and wiring if no voltage is present.
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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.
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