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

SI B 63 11 08
Lights

May 2010
Technical Service

This Service Information bulletin supersedes SI B63 11 08 dated November 2008.

SUBJECT
Automatic Headlamps: Adjust Sensitivity

MODEL

MOST bus vehicles with option 521 (Rain sensor and auto headlight) Vehicles from May 31, 2004

SITUATION

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

CAUSE

Rain/light sensor sensitivity

INFORMATION

The problem has been integrated into ISTA diagnostics. Follow the diagnosis test plan, using the latest ISTA version.

In the "Information Search", select the "Text Search" tab and search for "W6300" as the search term. Select the test plan "W6300_WAS20 Sensitivity, automatic driving lights".

WARRANTY INFORMATION

For information only. Warranty claims to adjust sensor sensitivity should not be made and will not be approved.