Rain/Light Recognition Sensor Servicing, TRW

Rain/Light Recognition Sensor Servicing, TRW

Only TRW can replace the housing and optical unit if the optical unit (coupling cushion) is damaged.

The housing and optical unit are always delivered with mounting clips. Remove these clips if they are not needed.

- Remove the rain/light recognition sensor (G397). Refer to=> [ Rain/Light Recognition Sensor (G397) ] Rain/Light Recognition Sensor (G397).


The rain sensor electronics may be damaged.

Be careful not to insert the screwdriver all the way through the housing up to the rain sensor electronics.

Do not touch the rain sensor electronics.

- Press the tab - 2 - on both sides and separate the upper section - 1 - from the lower section - 3 -.






- Remove the rain sensor electronics - 4 - from the old lower section and install the new electronics the exact same way.


Do not touch the optical unit.

Remove the protective cover just before installing the rain/light recognition sensor.

- Assemble the new upper section with optical unit and protective cover and the lower section.

- Pry the clip and bracket - 1 - out of the rain sensor housing - 2 - with a screwdriver.






- Install the rain/light recognition sensor. Refer to => [ Rain/Light Recognition Sensor (G397) ] Rain/Light Recognition Sensor (G397).

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