Open Circuit/Battery Drain
Thread Starter
1st Gear
Joined: Dec 2016
Posts: 1
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Open Circuit/Battery Drain
I have a 2003 50th Anniversary and dealer has diagnosed battery drain with key off to 2 problems, a faulty BCM and bad lumbar pump on drivers side. I am dubious it could be both and parts costs are exorbitant ($1331 for BCM and $810 for lumbar pump). It appears those parts are available for a total of no more than $450. I know a Tech 2 is required to program the new BCM. Any advise?
Melting Slicks
Joined: Mar 2004
Posts: 2,411
Likes: 412
From: Horseshoe Bend ID
I have a 2003 50th Anniversary and dealer has diagnosed battery drain with key off to 2 problems, a faulty BCM and bad lumbar pump on drivers side. I am dubious it could be both and parts costs are exorbitant ($1331 for BCM and $810 for lumbar pump). It appears those parts are available for a total of no more than $450. I know a Tech 2 is required to program the new BCM. Any advise?
Racer
Joined: Aug 2016
Posts: 317
Likes: 42
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
I wonder if it is related to the bad solder joints on the relays inside the seat control module. Do what 8Vette7 said and also see if there are any codes.
I am doubting that the body control module is the problem (though possible).
Why wouldn't they suspect the seat control module in there "troubleshooting" ?
I am doubting that the body control module is the problem (though possible).
Why wouldn't they suspect the seat control module in there "troubleshooting" ?
Last edited by Rob 02; Dec 9, 2016 at 02:23 AM.
Cruising
Joined: Nov 2012
Posts: 11
Likes: 2
From: Sevierville Tennessee
There is always a drain on the battery in a vet , or any other newer car with all of the computers and anti-theft stuff running when the car is turned off . Those systems need to be using volts to operate , if you use the car a lot it's no problem but if it is being sucked dead in 2 or 3 days it could be a battery problem as mine was or the pump might be bad . I replaced the battery with a mat battery and have not had a problem since . My lumbar pump still doesn't work but I have a replacement , just remember that if it's gonna sit for a week or 2 in the garage it might drain down far enough that it may not start .
Racer
Joined: Aug 2016
Posts: 317
Likes: 42
There is always a drain on the battery in a vet , or any other newer car with all of the computers and anti-theft stuff running when the car is turned off . Those systems need to be using volts to operate , if you use the car a lot it's no problem but if it is being sucked dead in 2 or 3 days it could be a battery problem as mine was or the pump might be bad . I replaced the battery with a mat battery and have not had a problem since . My lumbar pump still doesn't work but I have a replacement , just remember that if it's gonna sit for a week or 2 in the garage it might drain down far enough that it may not start .
