Remove/install rain/light sensor

AR82.00-S-1000E

Remove/install rain/light sensor

09.12.2019

Model

447, 448

with code JF1 (rain sensor)

Model

447, 448

with code LA2 (Headlamp Assist)

Model

447, 448

with code LG2 (LED Intelligent Light System)

Modification notes

09.12.2019

Set CAN bus to quiescent state

Operation step 10

1

Cover

4

Housing

2

Cover

5

Electrical connector

3

Retaining clamp

6

Humidity sensor/light sensor/rain sensor

Topical note

Notes on carrying out repair work in the vehicle interior

AH68.00-N-0001-01S

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

 

Remove/install

1

Switch off ignition and store transmitter key outside of transmission range (min. 2  m).

2

Unclip and remove cover (1).

 Installation: Make sure that the cover (1) is seated correctly.

 Clip remover

*452589016300

3

Unclip and remove cover (2).

 Installation: Ensure that cover (2) is seated correctly.

 Clip remover

*452589016300

4

Release and disconnect electrical connector (5).

5

Release retaining clamp (3) on both sides (arrows A) from housing (4).

 Retaining clip (3) is permanently installed on humidity sensor/light sensor/rain sensor (6).

6

Remove humidity sensor/light sensor/rain sensor (6) with retaining clamp (3) from housing (4).

 Installation: Always replace the humidity sensor/light sensor/rain sensor (6).
Detach protective foil from new humidity sensor/light sensor/rain sensor (6).



Clean

7

Remove silicone residue from windshield.


The windshield must be free of dust and grease in the area of the humidity sensor/light sensor/rain sensor (6).
Do not touch contact surface of humidity sensor/light sensor/rain sensor (6).
Otherwise, the humidity sensor/light sensor/rain sensor (6) may malfunction.

Loctite 7200

*BR00.45-Z-1038-04A

8

Install in the reverse order.

9

Commission humidity sensor/light sensor/rain sensor (6).



AD00.00-S-2000-04E

 Either "Clear glass" or "Green glass" must be selected in the Adaptations/Teach-in processes/Rain and light sensor menu item. Otherwise, commissioning will not be completed successfully.

10

Set CAN bus to quiescent state.

 Ignition must be switched off and vehicle must be locked. After 5 minutes, the CAN bus is in quiescent state and the new values are transferred to the rain sensor.



Check

11

Check function of humidity sensor/light sensor/rain sensor (6).

AR82.00-S-0020-01S

Repair materials

Number

Designation

Order number

BR00.45-Z-1038-04A

Loctite 7200

Henkel AG & Co. KGaA
http://www.loctite.de