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Old Mar 23, 2007 | 02:38 PM
  #1  
deuxslow's Avatar
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From: OC california
W215
New battery w203

Yeah we got a new battery for our 01' c320. The battery dies after 2-3 days of just sitting there in the drive way. Not getting any warning messages regarding the charging system. I'm out of ideas.
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Old Mar 23, 2007 | 02:43 PM
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2008 E63 wagon (1 of 62)
Originally Posted by deuxslow
Yeah we got a new battery for our 01' c320. The battery dies after 2-3 days of just sitting there in the drive way. Not getting any warning messages regarding the charging system. I'm out of ideas.
more than likely, you have an amp draw problem from one of the seat control modules causing the battery to drain after a short while.
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Old Mar 23, 2007 | 03:51 PM
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interesting theory...should I try disconnecting the power to both seats?
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Old Mar 23, 2007 | 06:17 PM
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if you plan on leaving the car for a few days, it would be worth a try. There are 2 plugs for each control module that I would disconnect in the front to make sure they aren't active.

make sure to leave the seat where you'd like it incase you want to jump in and go anywhere without reconnecting them.
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Old Mar 23, 2007 | 08:05 PM
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I'll try it then update this thread in few days just incase anyone may have the same issue.

Thanks
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Old Mar 23, 2007 | 08:34 PM
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2000 ML 320, 2003 CBR600F4i, 99 Eclipse GSX
Seat control modules in a 203 is a VERY common problem, unplugging them will most likely fix your problem. They need to be coded when installed, which needs to be done at a dealer though.
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Old Mar 23, 2007 | 11:19 PM
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You can operate the seats fine without coding and memory will work as well. Coding can be done at a later date.
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