Car doesn't start + Christmas Lights

320IN54 · 07-13-2019, 11:22 PM

I just finished a track day and was about to drive home when ABS, TC, TPMS and a low battery light came on. The lights started to flicker as well as IDrive Pulled the car over to check whats wrong and turned the car off. Then the car couldn't start whatsoever and did not even crank. I tried jumping it and the car started but drove it less than 500 meters and the car eventually died while still in drive. I checked the battery voltage and while it is on the low side it should be more than enough to get the car started and moving.

upshift_downshift · 07-14-2019, 08:23 AM

Quote:

Originally Posted by 320IN54

I just finished a track day and was about to drive home when ABS, TC, TPMS and a low battery light came on. The lights started to flicker as well as IDrive Pulled the car over to check whats wrong and turned the car off. Then the car couldn't start whatsoever and did not even crank. I tried jumping it and the car started but drove it less than 500 meters and the car eventually died while still in drive. I checked the battery voltage and while it is on the low side it should be more than enough to get the car started and moving.

Alternator

mweisdorfer · 07-15-2019, 07:31 PM

Quote:

Originally Posted by 320IN54

I just finished a track day and was about to drive home when ABS, TC, TPMS and a low battery light came on. The lights started to flicker as well as IDrive Pulled the car over to check whats wrong and turned the car off. Then the car couldn't start whatsoever and did not even crank. I tried jumping it and the car started but drove it less than 500 meters and the car eventually died while still in drive. I checked the battery voltage and while it is on the low side it should be more than enough to get the car started and moving.

Battery. Alternator (maybe). Jump start it and run a diagnostic test on the alternator. See, if it's charging the battery and running at the proper volts etc.

If you don't have these tools, take the car to Autozone, they will do this for free.

Upgrade to an AGM battery....

Make sure to register it.

320IN54 · 07-17-2019, 05:52 PM

Just got an update from my shop. They said that although the battery was flat, they couldnt start the car despite connecting it to a power source. They are going to swap in a new battery and continue checking but they do think there is a problem with the DME.

07-13-2019, 11:22 PM	#1
320IN54 First Lieutenant 123 Rep 331 Posts Drives: 2007 BMW 335i, 2021 BMW M2C Join Date: Jan 2017 Location: Irvine iTrader: (0)	Car doesn't start + Christmas Lights I just finished a track day and was about to drive home when ABS, TC, TPMS and a low battery light came on. The lights started to flicker as well as IDrive Pulled the car over to check whats wrong and turned the car off. Then the car couldn't start whatsoever and did not even crank. I tried jumping it and the car started but drove it less than 500 meters and the car eventually died while still in drive. I checked the battery voltage and while it is on the low side it should be more than enough to get the car started and moving.
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07-17-2019, 05:52 PM	#4
320IN54 First Lieutenant 123 Rep 331 Posts Drives: 2007 BMW 335i, 2021 BMW M2C Join Date: Jan 2017 Location: Irvine iTrader: (0)	Just got an update from my shop. They said that although the battery was flat, they couldnt start the car despite connecting it to a power source. They are going to swap in a new battery and continue checking but they do think there is a problem with the DME.
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