Car will not start with new battery?

TYE23

MEMBER
2011 BMW 328XI
3.0L
6 CYL
4WD
AUTOMATIC
181 MILES

My car only starts when connected to jumping cables. When running it does not turn off on me, but when I park it and don’t use the car for a couple of hours, I will have to connect it to cables again. Went to autozone, auto advanced and oreiley they all said alternator and starter and battery is perfectly fine but something is draining my battery. Please help.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,913 POSTS

It sounds like the battery is bad to me even though it passed the test, can I ask if you see or hear anything that is still on when the keys are out of the car? Also, I would check around the car to see if you can feel something that is warm or hot because this will drain power. Where power is being sent will be warm. Please check the alternator for warmth (engine cold). With the battery charge do this this to see if the battery passes.

https://www.2carpros.com/articles/car-battery-load-test

Also, this guide can help as well:

https://www.2carpros.com/articles/car-battery-dead-overnight

If you can't find anything and the battery is good, we should do a CAN scan. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Please go over these guides and get back to us.