LED High Mount Stop Light (CHMSL)
I just ran into my first problem with my new (to me) 2008 Dodge Grand Caravan SXT. The High Mount Stop Light, commonly known as the third brake light or CHMSL, is not working. The owners manual has the following to say:
LIGHT BULBS — Exterior Bulb Number
Center High-Mounted Stop Light . . . LED (See Note 1)
Note 1: The Center High-Mounted Stop Light (CHMSL)
uses LED lights that are not serviceable separately. The
CHMSL must be replaced as an assembly, see your
So I have a few questions.
1. Has anyone changed this assembly on their own?
2. Could something else be causing this light to fail?
3. How can I get at the assembly to do some testing?
I only had a few minutes tonight to diagnose the problem, and I didn't see an easy way to get to the assembly. An initial search of the internet was unhelpful and nobody seems to carry this part. Any help or insight would be greatly appreciated.
Last edited by jpx7777; 07-01-2011 at 01:08 AM.