2006 Cadillac STS Charging system

Tiny
FUENTESR
  • MEMBER
  • 2006 CADILLAC STS
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 27,000 MILES
I have a 2006 STS V6, that since I picked up has been giving me problems with charging. Since purchased new, have had two batteries replaced. And still I see the same pattern. Had had to jump the car over 6 times and frankly just do not accept the response- “it’s normal as the car has electronics on all the time that drains the battery if not used."
Viewing the battery status I keep seeing the status at different time going form 14.5V down to 12.4 V. Driving in highway at 75 mph, with NOTHING being used (no radio/heat.) The battery display jumps up/down. Mostly down at 12.9V.
What should I expect to see on a regular bases? 14V?
Wednesday, April 14th, 2010 AT 10:43 AM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Should not drop below 14.5V to keep battery up. Was ALT checked to be good? If car driven at least once a week that will keep BATT up.
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Wednesday, April 14th, 2010 AT 12:39 PM
Tiny
FUENTESR
  • MEMBER
  • 2 POSTS
Thank you.I am getting differnt response from dealer. Not the Alt has not been replaced
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Saturday, April 17th, 2010 AT 10:21 AM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Let me know what they say
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Monday, April 19th, 2010 AT 4:42 PM

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