On 2003 BMW 525i, with a 3month new battery, found car to be dead completely and alarm had gone off few hours before. Didn't know what caused alarm to go off, but was able to recharge the discharged battery to hold 1000 CCA (900 recd) at autozone. They found only 5.34 Volts left in new battery and said something is draining the car. Noticed a crookedly placed fuse for security alarm in the fuse box in the trunk near the battery (as I was looking for a drain) then put it in correctly. Put battery in and car was running again. Next day drove it around and noticed it was just not running smooth and noticed the cabin vents were blowing air irregularly and erratically with and without being turned on. This leads me to believe that this is the problem draining my battery. I do get a
'service engine soon light' but thought it may be from battery taken out, recharged and replaced. Car has never shut off on me on the road and AC vents have never done this before. Battery had died 3months ago after a bad thunderstorm overnight and thought that is what killed my battery previously. So my question is what is the problem draining my battery most likely? Is there an electrical drain pulling charge away from battery? Is it the vent problem or something else. What would be the typical repair in this scenario and can I save money and do it myself (in these tough economic times) or if I go to mechanic, how much would it run me approximately and what services should I expect. Thank you
have the same problem?
Monday, November 15th, 2010 AT 12:44 AM