Running board lights staying on issues
Thread Starter
Newbie
Joined: Feb 2025
Posts: 12
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Running board lights staying on issues
Hello all. I've got a strange issue that I can't seem to find an answer for. I've searched here, I've googled and have found nothing. Maybe I just don't know how to word it correctly, IDK. '11 GL350. The side running board lights stay on while driving and take up to 15 minutes to turn off after turning the car off and locking the doors. I do not have any open door messages on the dash, the interior lights come on when the doors are opened and go off when they are closed, there is no indication that there may be a door open to cause this. I had the rear SAM replaced due to water damage of the old one. Also replaced the rear hatch latch as that was giving me problems and a message that the rear hatch was always open. Figured that could have been causing it but since that is now fixed and the problem persists, I'm at a loss. Could this be a programming issue with the SAM? HELP!!
Last edited by doitall; Apr 29, 2025 at 10:24 AM.
Member
Joined: Apr 2011
Posts: 169
Likes: 63
From: Denver
2005 ML500, 2011 E350 4M, 2012 GL550
I was thinking about water in the sensitive areas when I was at your first sentence but as I read more, you mentioned SAM has been changed already, yes its definitely SAM related but without a proper scan, my guess is as good as yours, car needs to be scanned first.
Good luck, hope you find it quick.
Good luck, hope you find it quick.
MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,114
Likes: 782
NGL450 w/EORP, S550
Not always.
One of the battery drain culprits is usually a switch failed or failing, in that it doesn’t let the car fully go to sleep because it signals that a door is still open.
Some lights stay on and all of the bus architecture and ECM’s also stay on. Your symptom is sort of similar but different.
I have to go look in wis to see if the red warning stating door open is driven by the latch not closed and not the light switch.
One of the battery drain culprits is usually a switch failed or failing, in that it doesn’t let the car fully go to sleep because it signals that a door is still open.
Some lights stay on and all of the bus architecture and ECM’s also stay on. Your symptom is sort of similar but different.
I have to go look in wis to see if the red warning stating door open is driven by the latch not closed and not the light switch.
Thread Starter
Newbie
Joined: Feb 2025
Posts: 12
Likes: 4
Not always.
One of the battery drain culprits is usually a switch failed or failing, in that it doesn’t let the car fully go to sleep because it signals that a door is still open.
Some lights stay on and all of the bus architecture and ECM’s also stay on. Your symptom is sort of similar but different.
I have to go look in wis to see if the red warning stating door open is driven by the latch not closed and not the light switch.
One of the battery drain culprits is usually a switch failed or failing, in that it doesn’t let the car fully go to sleep because it signals that a door is still open.
Some lights stay on and all of the bus architecture and ECM’s also stay on. Your symptom is sort of similar but different.
I have to go look in wis to see if the red warning stating door open is driven by the latch not closed and not the light switch.
MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,114
Likes: 782
NGL450 w/EORP, S550
OK, so probably not a door switch.
Have you had the car for long?
Did you have the same replaced or did it come to you with the new Sam?
Reason I’m asking is I think someone might have programmed the car in DAS developer mode to have these lights stay on for longer as under body lights?
Have you had the car for long?
Did you have the same replaced or did it come to you with the new Sam?
Reason I’m asking is I think someone might have programmed the car in DAS developer mode to have these lights stay on for longer as under body lights?
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Thread Starter
Newbie
Joined: Feb 2025
Posts: 12
Likes: 4
OK, so probably not a door switch.
Have you had the car for long?
Did you have the same replaced or did it come to you with the new Sam?
Reason I’m asking is I think someone might have programmed the car in DAS developer mode to have these lights stay on for longer as under body lights?
Have you had the car for long?
Did you have the same replaced or did it come to you with the new Sam?
Reason I’m asking is I think someone might have programmed the car in DAS developer mode to have these lights stay on for longer as under body lights?
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MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,114
Likes: 782
NGL450 w/EORP, S550
Classic water damage and electrical corrosion symptom then. I hope you get this one but be prepared to be chasing gremlins with this car forever, especially if the water leaks still persist.
