Thread: Crank, no start
View Single Post
      07-18-2026, 07:45 AM   #7
DrFerry
Field Marshal
DrFerry's Avatar
10036
Rep
2,641
Posts

Drives: 2008 E92 M3
Join Date: Jul 2010
Location: Greenville, SC

iTrader: (5)

Quote:
Originally Posted by darren p. View Post
I do think the AGM battery is partially depleted, it would only charge to 72% on my charger before it went into trickle/maintain mode. the LiPo battery was showinig 13.1 when I checked it out of the car. I'd be curious what the voltage shows on the AGM when the car is asleep.

I found this thread - https://www.m3post.com/forums/showthread.php?t=1356590 Sounds awfully familiar and proves it is not outside the realm of possibilities the dealer tech did not follow proper procedure. I'm going to pull things out tomorrow and check over the wiring.

I spoke to the service manger of the dealership, he told me to bring the car back on Monday and they will go over the work and make sure it was done correctly, if it wasn't, they will fix it and let me know what was wrong, if it all checks out, they said they would give me a courtesy diagnosis which I told him I thought was fair...but I don't want to wait until monday and if I see something obvious, if I can, I'll just fix it myself.
That's a very good plan and great Sherlock Holmes information. The thread you linked above also has a "solved" thread... at the link below. Good luck and please report back and let us all know the rest of the story... Read the DIY thread, see the photos and videos.
.
https://www.m3post.com/forums/showthread.php?p=21323080
.
__________________
'08 E92 M3 DCT Melbourne Red/Bamboo Beige Leather/EDC/SSP Spec-R DCT clutch/SSP Pro-Gold DCT Fluid/Quaife LSD/3:45 Final Drive/BE Bearings & ARP Bolts/LUX H8 180/DCT Tune by BPM Sport/PFC Z-Rated Pads/ECS Brass Brake Caliper Guides/Alex Shop Solid Sub-frame Bushings/Motul 600/Tint
Appreciate 1