Lighting - Headlamp Moisture Fault Diagnostics

SI M 63 03 09
Lights

December 2009
Technical Service

SUBJECT
Headlamp Moisture: Fault Diagnostics

MODEL
All models

SITUATION

There is water or condensation in one or both headlamps.

INFORMATION

Under some environmental conditions, condensation can occur without there being a faulty headlamp. A comprehensive test plan that will allow an accurate diagnosis and repair is available. Follow the relevant test plan in diagnostics, using the latest ISTA diagnosis version. Select "Information search" and the test plan may be accessed in two ways:

1. Using the "Text search" tab, select "Search for document title" and search using the term "Headlight fogging".

2. Using the "Function structure" tab, select "Body / Mechanism, noises, optical element, leaks / Water ingress / Headlight fogged on inside / Start search".

Note that a Diagnosis Code will be produced at the end of the test module. Be sure to include the code in the "Comments" section of the warranty claim.

WARRANTY INFORMATION
For information only