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.
61 35 688 Replacing solar rain/light sensor and condensation sensor
Necessary preliminary tasks
- If necessary, remove INSIDE MIRROR .
For equipment specifications up to 09/2009:
- with 2-zone automatic air conditioning (SA 534)
- with 4-zone automatic climate control (SA 4 NB)
- with Head-Up Display (SA 610)
From 09/2009 onward, considered standard equipment and thus not dependent on equipment specifications.
Disconnect plug connection (2).
Unlock metal spring (3) in direction of arrow.
Remove solar rain/light and condensation sensor (1) from windscreen.
Installation note:
Close plug connection (2) only after fitting solar rain/light and condensation sensor on windscreen!
Carefully clean windscreen in the contact area with the solar rain/light and condensation sensor! Remove all silicone residues.
Remove protective cover from the new solar rain/light and condensation sensor. The silicone-coated surface below it must not be touched!
Press center of metal spring (3) to ensure latch mechanism is correct in both hooks (5) on each side of retaining element (4).
- Solar rain/light and condensation sensor is automatically coded via a terminal change (terminal 15) by junction box .
- Carry out INITIALIZATION to calibrate the rain sensor to the windscreen.
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.