Instruments - Erratic Windshield Wiper Operation

Date: February 16, 2006

Order No.: P-B-82.30/488

Supersedes:

Group: 82

SUBJECT:
Model 211.026/065/070/076/082/083/087/265/276/282/283/287, from VIN A861245 up to VIN A868449

Model 219.375, from VIN A042244 up to VIN A044179

Windshield Wipers Not Functioning Properly

If you receive customer reports in the above model vehicles regarding any of the below conditions, these may occur with a rain / light sensor (RLS) with software version SW8.7 and DTC 9093 may be stored in the overhead control panel (OCP).

Conditions:

^ Windshield wipers only wipe with excessive moisture on windshield

^ In winter operation with salty residue on the windshield, wipers wipe continuously with wiper switch in position I

^ Lights do not turn off with light switch in position AUTO,

To resolve,

1. Read coding from original rain/light sensor (RLS) using SDS by following the path Control units --> Body --> OCP - Overhead control panel --> Initial startup --> Initial startup with automatic takeover of settings of previous control unit --> F3 --> Parameterization and windshield adaptation.

2. Determine windshield tint as described, select windshield tint and confirm with F3.

3. Remove the rain/light sensor (RLS) per WIS Document AR82.30-P-7800T (211) or AR82.30-P-7800TX (219).

4. Replace RLS with A211 820 54 26 with either software version 8.6 or preferably optimized software available as of December 2005.

5. Reinstall the rain/light sensor (RLS) per WIS Document AR82.30-P-7800T (211) or AR82.30-P-7800TX (219).

6. Transfer coding to the new rain light sensor (RLS) using SDS by following the path Parameterization and windshield adaptation --> F3 to transfer coding to the new control unit --> Windscreen adaptation of rain sensor --> F5 to start --> F2 after adaptation is successfully completed --> Adaptation of light sensor amplification factor --> F3 to keep the value at 79 or 50% --> F3 to transfer coding to the new control unit --> Initial startup with automatic takeover of settings previous control unit --> F1 to finish.





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