I have a 2000 S40. The driver's side headlight stopped working and I reaplaced both headlights since the mounting brackets were broken on both. The driver's side headlight still won't come on. The mechanic told me the c.e.m. was bad and needed to be replaced. This part costs somewhere around $400. Does anyone know where I can find one for cheaper??? Please help.

 

Im not sure if the CEM will stop the headlight from working.

 

This is what I was told by the mechanic. Is there anything else that would stop the headlight from working?

 

Wiring in the headlight check and see if power is getting to the headlight itself.

 

Man. if you figure yours out PLEASE let me know. I've posted several times about the same prob and no one seems to know. I've also been told it's my CEM, but I don't think thats the prob. I've tried and tried to find a short or bad connection to no avail. About the time i decide f-it, it's just going to be out, we get a cold, low humidity day and the light comes on. Driving me absolutly crazy!!!

 

Thanks, I'll try that.

 

I'm not sure about your exact problem but I had the passenger side head light out (2000 S40). Checking the harness to the light resulted in no power. Since I need to drive at night a had to go to the dealer (ouch). It was the C.E.M (Central Electonic Module or something like that). Cost was $700 (ouchx2). Hope that helps. Good luck.

 

Damb this must be a new problem coming out of the CEMS I have never seen one go bad like this before.

 

The intermittant wipers on my car went, then the power window switch in the drivers door stopped rolling the window up, then the passenger headlight went out, and I've been told it's all because of the CEM.

 

I was afraid that it really was the CEM. Does anyone know where I can get a cheaper one than from the dealer?

 

From what I understand on the S40's you can install a used one with no software. SO you might be able to find a used one.

 

I was having the same problem for a long time. The light would jiggle and come back on. Eventually it stopped coming on altogether. It is the CEM. If your light comes on sometimes then the cem just hasn't gone out completely, but it will.

 

Know of any good websites that I can find a used one on. There are no used ones to be had in Lousiville.

 

I've been searching ebay, but if one pops up you're going to have to fight me for it. If I find a good source I'll post it up.

 

I've been chacking ebay for about 2 months. I've given up on ever finding one there. Thanks for the heads up if you find another site that has it for cheap.

 

Hi all

I want to know if any of you were able to fix the front Headlight of your Volvo S40? I had the exact same issue.. I was lucky to find an used CEM but I have no idea where to find it in my car to replace it. Can anyone help me??

Regards

 

The Cem is located under the dash on the drivers side. Remove the lower dash panel and it is right there.