Lighting - Supplemental Cornering Lamp Inoperative
94 12 01July 24, 2012
2020374 Supersedes T.B. V940904 dated May 18, 2009 to include an additional validation of repair step.
Vehicle Information
Condition
Supplemental Cornering Bulb is Inoperative or Requires Repeat Replacement
Technical Background
Excess voltage may result in a reduction in the service life of the supplemental cornering bulb(s).
To extend the service life of the supplemental cornering bulb(s), the voltage supplied to the bulb(s) is reduced.
Tip:
Only the Adaptive Front Lighting System (AFS) cornering bulb(s) will be switched OFF and no longer operate with Daytime Running Lamps (DRL). All other exterior bulb(s) remain unaffected.
Production Solution
Not applicable, production run complete..
Service
Procedure
^ Verify the supplemental corning bulb is inoperative and replace before programming.
^ Connect VAS 50XX Diagnostic Tool and Midtronics Battery tester/charger.
^ Select vehicle self diagnosis.
^ Select OBD standard.
^ Select 55 automatic vertical headlight aim control.
^ Press the forward arrow 2 times.
^ Select 07 coding.
^ Select the first option as shown below (figure 1).
^ Press the forward arrow.
^ Enter new code for your specific vehicle as identified from the listed PR codes. See table.
^ Press "Q" on number pad after entering code.
^ The display screen will show the old and new code (figure 2).
Tip:
The bulb icon located on the instrument cluster will blink after the new code has been entered (figure 3).
^ Press the backward arrow and select 006 to perform basic settings (figure 4).
^ Press the forward arrow. Enter "1" and press "Q" on the number pad (figure 5).
^ Press "Activate". The bulb icon should turn off and basic setting is complete (figure 6).
Warranty
Required Parts and Tools
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.