Rain/Light Recognition Sensor

Rain/Light Recognition Sensor





• When removing the Rain/Light Recognition Sensor (G397), a foil will be loosen; replace the foil before re-installing.

- Remove the interior rearview mirror.

• Retaining plate - 1 -

• Rain/light recognition sensor (G397)- 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 the rain/light recognition sensor (G397) - 3 - from the mirror base.

- A sensor foil remains affixed to the windshield.

- If the same windshield is being installed, remove the sensor foil from the glass including any remaining adhesive.

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

Installing the rain/light recognition sensor (G397)


If the same rain/light recognition sensor (G397) is being installed, then the sensor foil must be replaced.

- If necessary, also remove the sensor foil from the rain/light recognition foil (G397).

- Carefully pull the sensor foil - 2 - from the rain/light recognition sensor (G397)- 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.

- Place the sensor foil - 1 - on the rain/light recognition sensor (G397)- 2 - using a transparent protective foil.





- Push the sensor foil through the protective foil - 1 - so that there are no air bubbles onto the rain/light recognition sensor (G397)- 2 - as illustrated.





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





- Spray the sensor foil - 1 - completely with cleaning solution D 009 401 04 and install the rain/light recognition sensor (G397) into the mirror base.






The rain/light recognition sensor (G397) must be free of inclusions and bubbles on the windshield to function properly.

- Press sensor clips on mirror base.

Replacing the rain/light recognition sensor (G397)

• To remove sensor, proceed as described above.

- If necessary, completely remove any foil from the old rain/light recognition sensor (G397) from the windshield.

- Clean the contact surface on the windshield using cleaning solution D 009 401 04.





- Press the surface - arrows - on the cap - 2 - lightly together and pull it off the rain/light recognition sensor (G397) - 1 -.





- Spray the sensor foil - 1 - completely with cleaning solution D 009 401 04 and install the rain/light recognition sensor (G397) into the mirror base.

- Mount the rain/light recognition sensor (G397) on the windshield free of bubbles and press the clamp onto the mirror base.


The rain/light recognition sensor (G397) must be free of inclusions and bubbles on the windshield to function properly.