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Old 02-20-2010, 07:57 AM
greyhoundj's Avatar
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Location: Winnipeg,Manitoba,Canada
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Lamp control module

I am new to your forum and have just purchased a 1998 MB SL500. I am having trouble with the "Bulb out" warning light on the dash. I have replaced all the bulbs in the vehicle with MB bulbs on the advice of my mechanic. The dash light will flash and go out. Sometimes it will remain off for a few days and then come back on and go on and off. I am wondering if it might be the "Lamp Control Module" being flakey. This module is 345.00 from the Dealer and I don't want to replace it if that is not the problem. Any advice on the above would be greatly appreciated.


Last edited by greyhoundj; 02-20-2010 at 01:24 PM.
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Old 02-20-2010, 05:04 PM
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Join Date: Jul 2003
Location: Ocean Isle Beach, NC
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Not sure if this is an issue with the SL, but on the 210 chassis and the SLK's, there was/is an issue with the brake light sockets being bad and/or losing contact. A search should bring up info on that. Also, are you sure that the license plate lights are okay and not losing contact? Are there any lights actually out when the indicator comes on? Check closely - those license plate lights are often overlooked. I sure wouldn't jump at a new control module just yet.

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Old 02-20-2010, 05:07 PM
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I"m sure that cleaning the contacts of the lamp control module and putting some electrical grease on them won't hurt anything.
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Old 02-21-2010, 09:49 AM
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Location: Winnipeg,Manitoba,Canada
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Lamp Control Module

Thanks to you both for your information.
To Sokoloff:
I have replaced the licence plate lights and they do work. When the light on the dash comes on,I stop and check to see if any lights are out. As of this time I have not found any out. I have checked them all(doors,Brakes Parks Etc.)I took the tail light holders out and cleaned all the contacts and made sure all the bulbs worked.I founf a loose ground wire which I fixed,but this made no difference.
To Amosfella
If I new how to get this module out I would check it.I know where it is but am really nervous about taking the Fuse box apart. The car is in storage now and has to go to the Dealer to have the Trans oil and filter changed when I put it in service again. At this time I will get the Dealer to do as you suggest. Thank you both for the in formation.

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