C Class DRL issue - constant dim glow

stesmith89

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2011 C220 AMG Sport Edition 125 Saloon
Hi, wondering if you can help.

I have a 2011 C Class Saloon, and the passenger side DRL is constantly glowing very dimly. This has happened previously around 6 months ago, and both DRL units were replaced by my local dealer under warranty. This seemed to resolve the problem at the time.

My warranty is now extremely close to expiring, and I'm looking for a heads up from anybody who has had or seen this issue previously as to what may be causing it.

Image attached.

Thanks in advance,
Steve
 

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television

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It must be a fault in the switching, it cannot be a driving lamp problem, I suspect here all SAM controlled, I have read of another case of this problem.
 

chrisdean

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They're only held in place with 4 screws so it's easy enough to swap them over and then you'll know whether it's the light unit or the wiring at fault. They have both got the same wiring plug so if the dim one is still dim when swapped to the other side then the light unit is faulty and is confirmed if the known working light still works when plugged into the other side. You can also take the opportunity to check the plugs for corrosion or loose wires.
 
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S

stesmith89

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2011 C220 AMG Sport Edition 125 Saloon
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Thanks both, it's in with a dealer as we speak and they've just informed me that they believe it is a faulty SAM and are replacing it under warranty.

Figures crossed that sorts it!
 


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