Rain Sensor: Service and Repair

Rain/Light Recognition Sensor (G397)

The rain/light recognition sensor is designed so that it can be used again. The only requirement to use it again is that the connecting pad must not be damaged.


Prior to reuse, ensure the Rain/Light Recognition Sensor is stored in a dust-free area, and that the silicone connecting pad is not dirty.

• If the rain sensor was replaced by another rain sensor having a different part number, it is necessary to code the new rain sensor. Refer to => [ Rain/Light Recognition Sensor (G397), Coding ] Testing and Inspection.

• Rain sensors cannot be interchanged. Be sure to use the correct rain sensor.

Removing

- Turn off the ignition and all electric consumers and remove the key.

- Remove rearview mirror.

- Disconnect electrical connection - A - from Rain/Light Recognition Sensor - 1 -.






- Pry the Rain/Light Recognition Sensor - 1 - with a suitable screwdriver at the cut-out - 3 - from the retaining plate - 2 -.






• While removing, the complete Rain/Light Recognition Sensor and not only the upper shell of the sensor must be pried off.

Installing

Install in reverse order of removal. Note the following:


• Always clean the windshield surface inside the Rain/Light Recognition Sensor bracket before installing. Remove any traces of the connecting pad still remaining on the windshield.

• Surface (connecting pads) of Rain/Light Recognition Sensor must not be soiled or damaged when installing. Always replace a sensor that has a damaged connecting pad.

• If the surface (connecting pads) of Rain/Light Recognition Sensor is soiled, it can be potentially cleaned by applying and then pulling off one or more adhesive strips.

- Clean windshield inside retaining plate, with cleaning solution.

- If necessary, remove the protective cap on the new rain/light recognition sensor.

- Insert the rain/light recognition sensor - 1 - into the retaining plate - 2 - on the windshield and press it in securely.






• Even if the sensor is installed correctly, small air bubbles can form between the windshield and the connecting pad. The contact surface must be free-of-bubbles after approximately 10 minutes.

- Connect the connector - A - an secure sensor by installing harness cover.






- Install rearview mirror.

- Code the rain/light recognition sensor if necessary. Refer to => [ Rain/Light Recognition Sensor (G397), Coding ] Testing and Inspection.