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Why will the car engine not crank over?

Tiny
KUBSKI
  • MEMBER
  • 2010 BMW X1
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 20,000 MILES
I have a good alternator, good starter, good battery, no wrong codes or so. The battery doesn’t charge while driving. The car won’t start without helpstarter. I found those two red cables that are going to battery lately.
Thursday, May 4th, 2023 AT 12:59 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,512 POSTS
The fact that it won't start without a helper battery tells me the battery is no good, the starter is weak, or the battery cable connections or cables are bad. I would start by cleaning the cables and make sure they are tight.

This guide can help:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

Next here is a battery load test you can do while using the car as a tester:

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

Please go over these guides and report back.

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Friday, May 5th, 2023 AT 9:23 AM

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