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”,

page 66

 .

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

67

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‐

ling”, page 62

 .

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‐

ling”, page 62

 .

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‐

ling”, page 62

 .

– 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

⇒ “1.9 Rain/Light Recognition Sensor, Removing and Instal‐

ling”, page 62

 .