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.
1982 BMW 633CSi Automatic TransFACTORY OEM SERVICE PROCEDURE
Oxygen Sensor
- After 30, 000 miles of vehicle operation, a warning light in the dash will come on, indicating that oxygen sensor servicing is required. Trace wire from oxygen sensor to plug and disconnect. On 528e, pull off protective metal plate.
- On all models, remove oxygen sensor. With a light coat of copper paste applied to threads, install new sensor. On all except 528e, reset interval switch by pressing White button. On 528e, switch cannot be reset. Bulb must be removed from display panel to deactivate oxygen light.
Factory Service Tools
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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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