Diagnostic Aids

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The following symptoms are noticeable signs of bulb failure:

Flickering light, caused in the early stages of bulb failure.
Lights go out, caused when the ballast detects excessive, repetitive bulb re-strike.
Color change--The lamp may change to a dim pink glow.