Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 19
– Release the connection -1- and remove and remove the Rain/
Light Recognition Sensor - G397- -2-.
Caution
Lay the removed Rain/Light Recognition Sensor - G397- until
it is reinstalled so that the connecting pad is not contaminated
with dust or other deposits.
Installing
Install in the reverse order of removal while paying attention to
the following:
Caution
♦ Always clean the windshield surface inside the Rain/Light
Recognition Sensor - G397- frame before installing. Re‐
move any traces of the connecting pad still remaining on
the windshield.
♦ Surface (connecting pads) of Rain/Light Recognition Sen‐
sor - G397- must not be contaminated or damaged when
installing. Always replace a sensor that has a damaged
connecting pad. Refer to
⇒ “1.10 Rain/Light Recognition Sensor, Servicing”,
.
If the connecting pads surface of the Rain/Light Recognition Sen‐
sor - G397- is soiled, it can be potentially cleaned by “applying”
and then “pulling off” one or more adhesive strips.
– Always clean the windshield inside the retaining plate.
– If necessity remove the protective cap -1- on the new Rain/
Light Recognition Sensor - G397- .
– Push the handle in the direction of -arrow A-.
– Remove the protective cap -1- in the direction of -arrow B-.
– Connect connector.
– Install the Rain/Light Recognition Sensor - G397- -1- in the
frame on the windshield.
– Engage the wire retainer audibly on both sides -arrow-.
Even if the sensor is installed correctly, small air bubbles can form
between the windshield and the connecting pad. The contact sur‐
face must be free-of-bubbles after approximately 10 minutes. If
the contact surface is not free of bubbles after 10 minutes, the
Rain/Light Recognition Sensor - G397- must be removed and in‐
stalled again. Air bubbles between the windshield and the con‐
necting pad cause Rain/Light Recognition Sensor - G397-
malfunctions.
– If the Rain/Light Recognition Sensor - G397- was replaced it
must be adapted using the Vehicle Diagnostic Tester .
1.10
Rain/Light Recognition Sensor, Servic‐
ing
⇒ “1.10.1 Rain/Light Recognition Sensor, Servicing, TRW”, page
66
⇒ “1.10.2 Rain/Light Recognition Sensor, Servicing, Valeo”, page
1.10.1
Rain/Light Recognition Sensor, Servic‐
ing, TRW
There are different housings for the Rain/Light Recognition Sen‐
sor - G397- from different manufacturers.
The sensor housing and optical unit are always delivered as a
replacement part in individual parts with retaining clamps. Re‐
move these clamps if they are not needed.
Procedure
– Remove the Rain/Light Recognition Sensor - G397- . Refer to
⇒ “1.9 Rain/Light Recognition Sensor, Removing and Instal‐
Caution
The sensor electronics may be damaged.
♦ Be careful not to insert the screwdriver all the way through
the housing up to the sensor electronics.
♦ Do not touch the sensor electronics.
– Loosen the clip -1- on the four retaining tabs -arrows- with a
suitable screwdriver and remove.
– Release the tab -arrows- on both sides and separate the hous‐
ing upper section -1- with optical unit from the housing lower
section -2-.
Caution
The sensor electronics may be damaged.
♦ Do not touch the optical unit.
– Remove the sensor electronics -2- from the upper section
-1- install the new electronics the exact same way.
– Assemble the new housing upper section with optical unit and
protective cover with the housing lower section.
– Install the Rain/Light Recognition Sensor - G397- . Refer to
⇒ “1.9 Rain/Light Recognition Sensor, Removing and Instal‐
.
1.10.2
Rain/Light Recognition Sensor, Servic‐
ing, Valeo
– Remove the Rain/Light Recognition Sensor - G397- . Refer to
⇒ “1.9 Rain/Light Recognition Sensor, Removing and Instal‐
.
– Carefully remove the sensor film -2- or remaining sensor film
carefully from the Rain/Light Recognition Sensor - G397- -1-.
Caution
The Rain/Light Recognition Sensor - G397- surface must be
completely free of any remaining film.
– Clean the sensor surface with cleaning solution D 009 401 04.
– Remove the silicone paper -3- from the sensor film -2-.
The see-through protective film -1- serves as an assembly aid and
remains on the sensor film.
– Place the sensor film -2- using the clear protective film -1- on
the Rain/Light Recognition Sensor - G397- -3-.
– Press the sensor film through the protective film -1- free of
bubbles on the Rain/Light Recognition Sensor - G397- -2-.
– Remove the clear protective film -1- from the sensor film -2-.
– Install the Rain/Light Recognition Sensor - G397- . Refer to
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