GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Weird Headlight Issue

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Old 06-03-2018, 02:59 PM
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Weird Headlight Issue

My battery was dead in my GL450, so I replaced it with a new battery Later that evening I notice my headlight is out, but it doesn't notify me on the dash. I looked at it this morning, and it seems the drivers side has the city light and orange corner light on and passenger side only the headlight works. The fog works on drivers side but not on the passenger side. Any help?
Old 06-03-2018, 06:56 PM
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alx
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Originally Posted by nishboo
My battery was dead in my GL450, so I replaced it with a new battery Later that evening I notice my headlight is out, but it doesn't notify me on the dash. I looked at it this morning, and it seems the drivers side has the city light and orange corner light on and passenger side only the headlight works. The fog works on drivers side but not on the passenger side. Any help?
i would begin by reading and resetting the front sam.

you will need star/ das for that
Old 06-03-2018, 08:38 PM
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niL
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Originally Posted by alx
i would begin by reading and resetting the front sam.

you will need star/ das for that
I agree with this. Reading the faults on the front sam will point you in the right direction. You can also use a icarsoft scanner to read the codes. Maybe something is shorted to positive and staying on all the time which is the cause for your dead battery. I had my left front city light/park light lit on at ALL times regardless of key position, turns out there was water in my battery tray at some point and the front sam was heavily corroded. The light was shorted to positive and stayed on all the time. Had to replace the front SAM.. after finding and fixing the water leak from the fresh air vent...
Old 06-03-2018, 10:34 PM
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Thanks guys, I will run the quick test and reset the front sam, and then update here. Appreciate the help!
Old 06-04-2018, 06:39 PM
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Ran star, this is what it said...
Old 06-05-2018, 02:46 AM
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gl450 530i
Relay
Old 06-05-2018, 08:17 AM
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I searched but could not find the relay listing. Do you know where I would be able to find it? Or do you know which relay it is? Thanks in advance.
Old 06-12-2018, 12:18 PM
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Solved the issue: a plug came loose next to the battery tray when battery was reinserted. Fixed the plug back in and all is well.
Old 06-13-2018, 05:30 AM
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Mercedes Benz 2007 GL450 , 2012 BMW 528i
awesome!
thanks for posting the solution

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