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2005 C55 R/Side Headlights not working.

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Old 02-17-2021, 06:38 PM
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2003 MB E500
2005 C55 R/Side Headlights not working.

The insulation inside r/side headlight shed off and shorted wiring. I replaced both headlight with new Hellas but the right side did not come on. I have replaced HEADLIGHT SWITCH, FRONT SAM AND FUSEBOX, Checked all the fuses but nothing comes out the SAM to the headlight wire connector (No #5 underneath SAM unit. Help!!!
Old 02-18-2021, 08:55 AM
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2003 C230K Coupe Orion Blue
If this is the case, unfortunately the front SAM may be cooked. The SAM is involved as it's part of the Canbus monitoring system (checkes if the bulbs are burned out) for the external lights.

Does the car show a bulb out error?

Last edited by slammer111; 02-18-2021 at 08:59 AM.
Old 02-18-2021, 09:56 PM
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Originally Posted by slammer111
If this is the case, unfortunately the front SAM may be cooked. The SAM is involved as it's part of the Canbus monitoring system (checkes if the bulbs are burned out) for the external lights.

Does the car show a bulb out error?
Yes it shows the high and low beam and park/ turn signal out on the r/ side. I put in a used SAM but same thing.
Old 02-18-2021, 11:58 PM
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Try swapping headlights (as in the entire assemblies) and see if the problem moves to the other side of the car. The connectors should be the same between L and R.
Old 02-21-2021, 01:11 AM
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Already did.

R/side has no power in connector but ground is fine.
Old 02-21-2021, 01:30 AM
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Start tracing the wiring. Also check the connectors themselves.

Remember that the car will cut power to a circuit if it thinks the bulb is out. That may be what you're actually seeing. Cars are too smart for their own good.

When you swapped headlights, did you also "turn off" the car before restarting?

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