Operation CHARM: Car repair manuals for everyone.

Rain Sensor







Rain Sensor






When removing rain sensor, a foil is detached from the sensor. This must be replaced before reinstalling.

- Rearview mirror removed.

Retaining plate - 1 -

Rain sensor - 2 -

Retaining clip - 3 -

Retaining Clip, Releasing





- Disconnect electrical connector.

- Press clip - 2 - outward at - arrows -, for example, with a small screwdriver.

- Remove clips - 2 - from mirror base - 1 -.

- Remove rain sensor - 3 - from mirror base.

- A sensor foil remains affixed to the windshield.

- If the same windshield is reinstalled, remove this completely from the windshield.

- Clean the surface with cleaning solution D 009 401 04.

Installing Rain Sensor

If the same rain sensor is reinstalled, proceed as described.

- Remove the rest of the sensor foil from the rain sensor, if necessary.

- Carefully peel sensor foil - 2 - from rain sensor - 1 -.






- Clean the surface with cleaning solution D 009 401 04.

Sensor surface must be completely free of foil remnants.

- Peel silicon paper - 3 - from sensor foil - 2 -.






- The transparent protective film - 1 - remains on the sensor foil as an assembly aid.

- With the help of the transparent protective foil - 1 -, place the sensor foil on the rain sensor - 2 -.






- Press sensor foil with protective foil - 1 - onto rain sensor - 2 - without bubbles, as shown.






- Now remove transparent protective foil - 1 - from sensor foil - 2 -.






- Spray entire surface of sensor foil - 1 - with cleaning solution D 009 401 04 and insert sensor in mirror base.






Rain sensor must be free of inclusions and bubbles on the windshield to function properly.

- Press sensor clips on mirror base.

Replacing Rain Sensor

To remove sensor, proceed as described above.

- If necessary, completely remove foil remnants from windshield.

- Clean sensor contact surface on windshield with cleaning solution D 009 401 04.






- Lightly press tabs - arrow - on protective cap - 1 - together and remove from rain sensor - 2 -.






- Spray entire surface of sensor foil - 1 - with cleaning solution D 009 401 04 and insert sensor in mirror base.

- Press sensor onto windshield without bubbles and place clips on mirror base.

Rain sensor must be free of inclusions and bubbles on the windshield to function properly.