Unlock automatic transmission to neutral?
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Mercedes w211, Porsche 911, Mercedes GL, Mercedes/8 Estate
Unlock automatic transmission to neutral?
Does anyone know how to unlock the automatic transmission, from park to neutral, when we run out of battery?
Thanks!
Thanks!
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NGL450 w/EORP, S550
That's what the aux battery is for. It has one job, and that is to allow the ISM to shift out of park when the main battery is drained.
Replace it, and you will be enabled to shift to neutral.
Btw, in order to get at it you have to remove the main battery at which point you might as well replace that as well.
Replace it, and you will be enabled to shift to neutral.
Btw, in order to get at it you have to remove the main battery at which point you might as well replace that as well.
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From: Emmett, ID, USA
2007 GL450
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From: Allentown, PA
'08 GL 320 CDI
If you're 100% positive the battery (or connections) aren't the problem, then the only other thing I can think of (besides wheel dollies as noted above) would be to unbolt the driveshafts.
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MBWorld Fanatic!
Joined: Jun 2010
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From: Emmett, ID, USA
2007 GL450
Unbolt the driveshafts, or put it up on dollies, and wheel it to your disassembly area. There is no way to shift out of Park without control over the electronics.
Good luck.
MBWorld Fanatic!
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From: Emmett, ID, USA
2007 GL450
ISMs are on Ebay for $300. Have to program it, of course. I know we go around saying this makes it a parts car; is that because whatever fried the ISM probably fried a bunch of other stuff too? Like water damage?
Or is that assuming the dealership rates for replacing the ISM?
Or is that assuming the dealership rates for replacing the ISM?
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From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
There was a fellow in the W251 fourm that parked his car in a very tight garage that when the battery went flat he couldnt get into change it or even jack it up to move it. Jumping it didnt work and sounded genuinly stuck. You could see how angry he was getting with each post as no matter what people suggested, he'd snookered himself. I told him the only way was to spill oil under each wheel and slide it out. I reckon this was the only way out. Never heard from him again.
MBWorld Fanatic!
Joined: Jun 2010
Posts: 2,755
Likes: 628
From: Emmett, ID, USA
2007 GL450
There was a fellow in the W251 fourm that parked his car in a very tight garage that when the battery went flat he couldnt get into change it or even jack it up to move it. Jumping it didnt work and sounded genuinly stuck. You could see how angry he was getting with each post as no matter what people suggested, he'd snookered himself. I told him the only way was to spill oil under each wheel and slide it out. I reckon this was the only way out. Never heard from him again.
Thread Starter
Newbie
Joined: Feb 2024
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Mercedes w211, Porsche 911, Mercedes GL, Mercedes/8 Estate
I already resolve my problem, that is a eletric issue (near sam under front seat). But there are something that makes consumes battery yet.
This car its very rare in my country (Portugal) and very dificult to get some parts, even in Mercedes official dealer.
I will keep in touch some news from my GL.
Thanks to all friends from Mercedes forum!
This car its very rare in my country (Portugal) and very dificult to get some parts, even in Mercedes official dealer.
I will keep in touch some news from my GL.
Thanks to all friends from Mercedes forum!
Thread Starter
Newbie
Joined: Feb 2024
Posts: 6
Likes: 0
Mercedes w211, Porsche 911, Mercedes GL, Mercedes/8 Estate
MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,115
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NGL450 w/EORP, S550
Well, then jack it up on sliding Dollies to move it around to where you can work on it - starting with removing and inspecting all electrical modules under each seat. They are very likely damaged from sitting in water at some point and you likely have more problems than a fried ISM.
