Rain sensor, removing and installing

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Rain Sensor Remove/Install Components

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Removing rain sensor

NOTE:

If the sensor foil is damaged when removing rain sensor, this must be replaced before re-installing.

Rearview mirror removed →
- 70 - INTERIOR TRIM
- 70 - INTERIOR TRIM for BODY INTERIOR - CABRIOLET
Remove clamps - 3 - from mirror base retaining plate - 1 -.
Disconnect electrical connector to rain sensor.
Remove rain sensor from mirror base.

A sensor foil remains adhered 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

NOTE:

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

Fig 2: Removing Rest Of The Sensor Foil From Rain Sensor

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove the rest of the sensor foil from the rain sensor, if necessary.
Also clean the surface with cleaning solution D 009 401 04.

CAUTION: Sensor surface must be completely free of foil remnants.

Fig 3: Removing Silicone Paper From Sensor Foil

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove silicone paper from sensor foil.
The transparent protective film remains on the sensor foil as an installation aid.

Fig 4: Placing Sensor Foil On Rain Sensor With Help Of Transparent Protective Foil

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Place sensor foil on rain sensor with help of transparent protective foil.

Fig 5: Pressing Sensor Foil Onto Rain Sensor Without Bubbles

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Press sensor foil as shown in - direction of arrow - onto rain sensor without bubbles.

Fig 6: Removing Transparent Protective Foil From Sensor Foil

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Then remove transparent protective foil from sensor foil.

Fig 7: Spraying Entire Surface Of Sensor Foil With Cleaning Solution D 009 401 04 And Inserting Sensor In Mirror Base

Courtesy of VOLKSWAGEN UNITED STATES, INC.

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

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

Press sensor retaining clamps on mirror base.

Replacing rain sensor

NOTE:

To remove sensor, proceed as described above.

If necessary, completely remove foil remnants from windshield.

Fig 8: Cleaning Sensor Contact Surface On Windshield With Cleaning Solution D 009 401 04

Courtesy of VOLKSWAGEN UNITED STATES, INC.

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

Fig 9: Spraying Entire Surface Of Sensor Foil With Cleaning Solution D 009 401 04 And Inserting Sensor In Mirror Base

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Peel off protective foil from rain sensor.
Spray entire surface of sensor foil with cleaning solution D 009 401 04 and insert sensor in mirror base.
Press sensor onto windshield without bubbles and place retaining clamps on mirror base.

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