Lighting - Auto-Lamps Switch On Too Early Or Too Late

SI B63 11 08
Lights

April 2011
Technical Service

This Service Information bulletin supersedes SI B63 11 08 dated May 2010.

[NEW] designates changes to this revision

SUBJECT
Automatic Headlamps: Adjust Sensitivity

MODEL
[NEW] E82, E88 (1 Series)
[NEW] E90, E91, E92, E93 (3 Series)

[NEW] Vehicles equipped with option 205 (Automatic transmission) and option 521 (Rain sensor and auto headlight)

[NEW] SITUATION

The customer states that with the headlamp switch set to the "Automatic" position, the headlamps switch on too early or too late.

CAUSE

Rain/light sensor sensitivity

[NEW] PROCEDURE

Adjust the headlamp sensitivity by using the latest ISTA (Integrated Service Technical Application) diagnosis version.

Search for the test plan by selecting "Information Search\Function Structure\03 Body\Lights". and "Start Search". From the ISTA hit list, select the test plan "W6300_WAS20-Sensitivity, automatic driving lights" and follow the procedure. Recheck the function and operation of the automatic headlamps.

[NEW] WARRANTY INFORMATION

This service information bulletin is intended to provide technical diagnostic and/or repair information.

The situation described above is a normal characteristic of the vehicle design. Adjustment of these settings at the request of the customer is not a warranty matter.