Quote:
Originally Posted by BMWhound
Where is that thing located?
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Its the rectangular box mounted on the windshield, behind the mirror.
It's easier to get to if you remove the mirror first...
1. Remove the clamshells (mirror trim)
2. Twist the mirror mount 90' until the mirror unlocks from the windshield.
3. Remove the cable from the mirror. (You now can sell the mirror separately. )
4. Disconnect the small four pin plug from the rain sensor.
5. On the bottom edge, on each side of the box, using your thumbnail, pull each latch down about a 1/4". Use a small screwdriver if you cannot use your thumbnail. Pull the box off.
Be careful since these sensors are FRAGILE..
I did this quick procedure from memory, so I might have forgotten a step...