Removing and installing rain and light sensor G397 - vehicles from model year 2012 onwards, USA vehicles from model year 2013 onwards — AUDI

Removing and installing rain and light sensor
G397
- vehicles from model year 2012 onwards, USA vehicles from model year 2013 onwards
Special tools and workshop equipment required
Cleaning fluid
D 009 401 04
Removing
Switch off ignition.
Versions equipped with ignition lock: Remove ignition key.
Remove interior mirror (repair group 68: Interior mirror; Removing and installing interior mirror).
Unplug electrical connector (3).
Insert a narrow screwdriver (5) into opening and release catches of retaining clip (2) (arrows)
, as shown in illustration.
Wait one minute to allow silicone pad to loosen enough so that it can be removed without leaving residue.
Loosen rain and light sensor
G397 item 4 by turning it back and forth and take it out of mounting (1).
Caution
Risk of damage to humidity sender.
The humidity sender (arrow) on the rain and light sensor (1) is very sensitive and must not be damaged.
If damaged, the humidity sender must be renewed.
Installing
Installation is carried out in the reverse order; note the following:
Note
Renew silicone pad and retaining clip.
Release catches on old retaining clip (1) (arrows) and detach it from sensor (2).
Press on new retaining clip until it engages audibly.
Clean bonding surface on windscreen with cleaning fluid
D 009 401 04.
Any silicone residue must be removed completely.
Remove silicone pad (2) from sensor (3)
, ensuring that no residue remains.
Clean bonding surface (1) on sensor with cleaning fluid
D 009 401 04.
Remove silicone paper (1) from silicone pad (3).
Transparent protective film (2) remains on silicone pad to assist with installation.
Using transparent protective film (1) to help you, position silicone pad (2) on sensor (3) so that it is centred.
Press silicone pad onto sensor through protective film, ensuring that no air bubbles are present.
Remove protective film (2) from silicone pad (1).
Note
To prevent the silicone pad from becoming dirty, do not remove the protective film until just before fitting the pad.
Spray cleaning fluid
D 009 401 04 all over silicone pad.
Insert sensor (4) into mounting (2).
Caution
In order to function correctly, rain and light sensor
G397 must be clear and there must be no air bubbles between it and the windscreen.
Press on retaining clips
1, 5 until they engage audibly.
Plug in electrical connector (3).