Cadillac STS The newest installation of the performance sedan from Cadillac, having replaced the Seville

Starting Trouble

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Old 01-14-2011, 12:55 PM
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Exclamation Starting Trouble

I have a 2007 STS with keyless start. After leaving the car for several days, four days or more the battery seems to die - car won't start. This has been happening for a while, even during the time while under warrantee, battery has had to be replace more then two times, under warrentee; both time after returning from vacation when the car was parked. Never thought nothing of it because the car was driven daily but, recently the car has been parked more often and the problem appears to be caused as a result of the the time left in the garage un-driven for more then 4 or 5 days. Please help!
 

Last edited by Markmbd; 01-14-2011 at 12:58 PM.
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Old 01-14-2011, 02:05 PM
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Originally Posted by Markmbd View Post
I have a 2007 STS with keyless start. After leaving the car for several days, four days or more the battery seems to die - car won't start. This has been happening for a while, even during the time while under warrantee, battery has had to be replace more then two times, under warrentee; both time after returning from vacation when the car was parked. Never thought nothing of it because the car was driven daily but, recently the car has been parked more often and the problem appears to be caused as a result of the the time left in the garage un-driven for more then 4 or 5 days. Please help!

modern vehicles are continuously using small amounts of current to function and retain their computer memories, and in some cars a defect in the trunk pull-downs or door mechanisms or door power locks a drain can take a battery down in a couple of days.

you need to do a parasitic
load test ...

read this:

http://www.labscopes.com/pg07.htm


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