Light Bulb - Replacement Guidelines
SI B 63 02 01
Lights
August 2010
Technical Service
This Service Information bulletin supersedes SI B63 02 01 dated March 2001.
[NEW] designates changes to this revision
SUBJECT
Light Bulb Replacement - Incandescent and Halogen Light Bulbs
MODEL
ALL excluding Xenon light bulbs and light-emitting diodes (LEDs)
[NEW] SITUATION
Functional testing of incandescent and halogen light bulbs replaced under warranty and returned to the Warranty Parts Return Center (WPRC) along
with the analysis of light bulb claim data shows that some of these light bulbs are:
^ Being replaced unnecessarily;
^ Incorrectly handled during a previous repair or replacement; or
^ Not replaced, as a set, when they should have been
2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 416
This can result with unnecessary additional warranty costs, service visits and reduced customer satisfaction.
Note:
The situation above does not apply to Xenon bulbs that may only be replaced as instructed after running the corresponding ISTA test plan.
[NEW] PROCEDURE
When replacing incandescent and halogen light bulbs, always follow the guidelines listed below:
1. Before replacing these light bulbs, confirm that they are defective (most times a broken filament can be seen visually). If there is no visual
confirmation, test the bulb using a multimeter or 12-volt power supply with a suitable bulb holder to confirm that the bulb is defective.
2. A failed light bulb with distinctly "blackened" glass indicates a failure. In situations where the failed vehicle bulb as a "twin" with the same
function (for example, left and right parking lights), replace the other bulb as well if it also found to be "blackened" in the same way.
3. Only replace light bulbs when the lighting system is switched off or when the vehicle is powered down.
4. Do not touch any bulb glass directly with your fingers - this will cause local overheating spots and premature bulb failure. The best practice is to
hold the bulb using a clean cloth or while wearing clean gloves. Clean off any dirty bulbs as necessary.
5. Before installing the replacement light bulb, check the bulb holder contacts for traces of oxidation and clean if necessary. Check for adequate
contact force.
6. In cases where a vehicle has had repeated light bulb failures, check the wiring system supply voltage using ISTA diagnosis.
7. Use only genuine BMW replacement light bulbs sourced through the BMW NA Parts department to help avoid bulb compatibility issues.
[NEW] WARRANTY INFORMATION
For information only
The bulb replacement reason including the applicable guidelines listed above must be stated on the repair order and in the corresponding claim
comment section.
Please follow the standard warranty parts documentation and retention procedures for all bulb replacement repairs.
