Is there a way to turn off front 12v power socket when ignition turns off
Thread Starter
Senior Member
Joined: Jan 2017
Posts: 254
Likes: 60
From: Houston, TX
Mercedes Benz 2007 GL450 , 2012 BMW 528i
Is there a way to turn off front 12v power socket when ignition turns off
My dash cam in 2007 GL450 was previously connected to center lighter power socket. It used to turn off when ignition would be off. But now I have moved dash cam from center of windshield to passenger corner of windshield. The closest connection now is the power socket under glove box. But now I have noticed that it stays on all the time.
A quick search through manual indicated that that front and rear power sockets are supposed to be hot all the times unless a significant drop in battery voltage is detected.
My question is that is there a way to program these power sockets to turn off once ignition is turned off. My 02 Town and Country has a setting in fuse box where switching the fuse to adjacent place make certain socket to stay on/off. Is something such option available in GL450 ?
A quick search through manual indicated that that front and rear power sockets are supposed to be hot all the times unless a significant drop in battery voltage is detected.
My question is that is there a way to program these power sockets to turn off once ignition is turned off. My 02 Town and Country has a setting in fuse box where switching the fuse to adjacent place make certain socket to stay on/off. Is something such option available in GL450 ?
Thread Starter
Senior Member
Joined: Jan 2017
Posts: 254
Likes: 60
From: Houston, TX
Mercedes Benz 2007 GL450 , 2012 BMW 528i
Although I had solved the problem back then by extending the wire from central console 12V socket. But just wanted to bump this question to see if any new on this forum knows.
I have searched but nothing came up regarding how to make it happen. There are some threads where they talk about changing fuse positions in other Mercedes but nothing about GL 450. Following thread talks about ML in previous generations. Not sure if it will be applicable to to GL.
https://mbworld.org/forums/m-class-w...h-off-ign.html
I have searched but nothing came up regarding how to make it happen. There are some threads where they talk about changing fuse positions in other Mercedes but nothing about GL 450. Following thread talks about ML in previous generations. Not sure if it will be applicable to to GL.
https://mbworld.org/forums/m-class-w...h-off-ign.html
MBWorld Fanatic!
Joined: Sep 2005
Posts: 6,189
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From: Albuquerque
'10 CL550, '12 GL550
Just wait ... it will automatically turn off after some delay. Kind of like if you leave your tailgate open for an extended period and the interior lights time out.
Junior Member
Joined: Jul 2017
Posts: 31
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From: Melbourne Australia
2008 ML320 CDI with every option code including Offroad pack, 1978 450SEL
I can't speak for the front outlets, but the power socket in the rear compartment will turn off after 20 minutes - as you say - if there is no load on it.
However, if there is an electrical load on the socket, it will not time out, and remains powered until the main battery voltage drops to a critical point. The ECU will only then cut power to the socket.
YMMV.
Thread Starter
Senior Member
Joined: Jan 2017
Posts: 254
Likes: 60
From: Houston, TX
Mercedes Benz 2007 GL450 , 2012 BMW 528i
yes, it doesn't turn off automatically under load. I remember last year when I posted above question, I went out to check in middle of night, and my Dash Cam was still recording at 12am.
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MBWorld Fanatic!
Joined: Sep 2005
Posts: 6,189
Likes: 242
From: Albuquerque
'10 CL550, '12 GL550
One example of CANBus action occurs on my BMW motorcycle. It has a single, single filament bulb serving as both taillight and brakelight ... it depends on the voltage the controller sends it whether it’s bright enough to be a brake light. Two functions in one wire.
I’d assume all German cars for sure ... and who cares about anything else!
https://en.wikipedia.org/wiki/CAN_bus
Last edited by lkchris; Apr 19, 2018 at 09:53 PM.
