car is throwing every error and won't crank

AdventureNoodle · 12-29-2023, 05:24 PM

Just replaced my battery. 2018 BMW M2.

Thought the battery would fix it, but it hasn’t. What could have absolutely destroyed itself to cause this? Attached the bimmerlink scans.

shaneguags · 12-30-2023, 10:06 PM

maybe the DME is broken ?

TheNine90 · 01-02-2024, 07:48 AM

Clear error and check what remains

dtmurf · 01-02-2024, 11:33 AM

Quote:

Originally Posted by AdventureNoodle

Just replaced my battery. 2018 BMW M2.

Thought the battery would fix it, but it hasn’t. What could have absolutely destroyed itself to cause this? Attached the bimmerlink scans.

What is the rest of the story?

What happened that made you replace the battery or made you think that a new battery would be the fix?

Did you register/code the new battery?

samsamdar · 01-02-2024, 11:10 PM

Update for everyone here lol - the positive battery terminal decided to off itself

F87source · 01-02-2024, 11:53 PM

Quote:

Originally Posted by samsamdar

Update for everyone here lol - the positive battery terminal decided to off itself

Damn that sucks, but I actually have heard of this happening before. Apparently on the F series the power cable and the distribution box in the trunk can short and burn. It's been known to happen on the e series too, I can't remember why but it might be a bad ground or power terminal. So ensure you reassemble it correctly, apparently this happens after people mess with this region.

dtmurf · 01-03-2024, 12:03 AM

Quote:

Originally Posted by samsamdar

Update for everyone here lol - the positive battery terminal decided to off itself

WOW! Looks like that could have burned up the whole car!! Please keep us posted on what the fix for that is...I think that harness (once it goes through the body) runs all the way to the engine compartment so probably not an easy fix!

samsamdar · 01-03-2024, 12:09 AM

Quote:

Originally Posted by dtmurf

WOW! Looks like that could have burned up the whole car!! Please keep us posted on what the fix for that is...I think that harness (once it goes through the body) runs all the way to the engine compartment so probably not an easy fix!

Yeah we have zero clue what caused this - all the work done on this car was done professionally. We'll see how much of a bitch this cable/harness is to replace lol

ShortSides · 01-04-2024, 04:38 PM

Roshan we need some pics and videos of the car. That thing was a beast when I rode in it before the PS2. Would love to see it in its current state.

samsamdar · 01-05-2024, 11:50 AM

Ended up being a super easy fix - that black melted plastic was actually just a part of the retaining clip that holds the positive nipple to the battery positive harness; popped off the burnt part, replaced the clip, and replaced the positive battery cable. Easy fix and car's working fine again

dtmurf · 01-06-2024, 03:06 PM

Quote:

Originally Posted by samsamdar

Ended up being a super easy fix - that black melted plastic was actually just a part of the retaining clip that holds the positive nipple to the battery positive harness; popped off the burnt part, replaced the clip, and replaced the positive battery cable. Easy fix and car's working fine again

That's great, so I take it the burning didn't 'flow' through to the other side?

samsamdar · 01-06-2024, 03:09 PM

Quote:

Originally Posted by dtmurf

That's great, so I take it the burning didn't 'flow' through to the other side?

Nope not at all

12-29-2023, 05:24 PM	#1
AdventureNoodle Private First Class 36 Rep 140 Posts Drives: F87 BMW M2 LCI Join Date: Aug 2021 Location: Frisco, TX iTrader: (0)	car is throwing every error and won't crank Just replaced my battery. 2018 BMW M2. Thought the battery would fix it, but it hasn’t. What could have absolutely destroyed itself to cause this? Attached the bimmerlink scans. Attached Images
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12-30-2023, 10:06 PM	#2
shaneguags Major 1193 Rep 1,244 Posts Drives: 2017 Big Turbo BMW M2 Join Date: May 2021 Location: Tampa, FL iTrader: (0) Garage List 2017 BMW M2 [9.42]	maybe the DME is broken ?
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01-02-2024, 07:48 AM	#3
TheNine90 Banned 578 Rep 2,047 Posts Drives: bmw Join Date: Aug 2021 Location: Workshop iTrader: (0)	Clear error and check what remains
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01-02-2024, 11:10 PM	#5
samsamdar Captain 585 Rep 867 Posts Drives: OG M2 Join Date: Oct 2017 Location: Los Angeles, CA iTrader: (9) Garage List 2018 BMW M2 [6.67]	Update for everyone here lol - the positive battery terminal decided to off itself Attached Images __________________ OG M2 with the OEM M mirror retrofit
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01-04-2024, 04:38 PM	#9
ShortSides First Lieutenant 405 Rep 332 Posts Drives: 2018 BMW M2 Join Date: Jan 2022 Location: Dallas, TX iTrader: (0) Garage List 2018 BMW M2 [0.00]	Roshan we need some pics and videos of the car. That thing was a beast when I rode in it before the PS2. Would love to see it in its current state.
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01-05-2024, 11:50 AM	#10
samsamdar Captain 585 Rep 867 Posts Drives: OG M2 Join Date: Oct 2017 Location: Los Angeles, CA iTrader: (9) Garage List 2018 BMW M2 [6.67]	Ended up being a super easy fix - that black melted plastic was actually just a part of the retaining clip that holds the positive nipple to the battery positive harness; popped off the burnt part, replaced the clip, and replaced the positive battery cable. Easy fix and car's working fine again __________________ OG M2 with the OEM M mirror retrofit
	Appreciate 8 Philly_sweden580.00 philth198.50 Jack White82.50 AdventureNoodle36.00 Sungillest101.50 dtmurf481.50 jefe2000739.50 qnet681.50 Quote