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2007 R350
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Discussion Starter #1
on my 2007 R350 3rd brake light message keep comming up, but light is working fine. Any sugestions?
 

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Outstanding Contributor - Always Remembered, RIP
Zotye Auto 1.5T T600 2016
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52,804 Posts
The computer works on ohms resistance when determining a faulty light unit, if the resistance goes above a pre programmed level it puts the warning light on. So even thought the lamp is working it is creating too much resistance to current flow.

This may be because of an old bulb or a bad connection or a bad ground. Try a new bulb first off.
 
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