Did Bimmerlink Battery Registration Brick my ECU?

Mosely · 02-20-2023, 06:49 PM

So I replaced the battery in my OG M2 yesterday. Same specs as the OEM one from BMW so just needed to register it in Bimmerlink. Did the registration successfully with no errors or issues. Turned the car off. Went to go for a drive today and the dash lit up like a Christmas tree with error codes. Bimmerlink says there are errors in basically every single module and can't clear them. The car will start and drive but half the buttons don't work, headlights won't turn on, rev match disabled, etc. I have no backups to restore from since I wasn't doing any actual coding in Bimmercode/etc. Have coded cars before with Bimmerlink/Bimmercode and never had any issues like this.

Am I SOL and need to take it to the dealer for a full reflash? I don't have my E-SYS laptop anymore but can probably rig up and old desktop in the garage if needed.

Fred Conoway · 02-21-2023, 05:27 PM

Dumb question, but it does need to be asked; Have you checked the terminals on the battery to make sure they are secure and not touching anything metal (body, brackets, etc)?

Mosely · 02-22-2023, 09:48 AM

Quote:

Originally Posted by Fred Conoway

Dumb question, but it does need to be asked; Have you checked the terminals on the battery to make sure they are secure and not touching anything metal (body, brackets, etc)?

Yep, first thing I did was pop off the battery cables to see if it would reset anything but no dice. I'm going to recode all the ECUs with ESYS tonight.

Zeese · 02-22-2023, 11:18 PM

This sounds grim. I would disconnect the battery for an extended period of time and then reconnect it (with fingers crossed and all). There are recommendations online suggesting 15 min. Why not. Maybe 30 min. Long enough for all connections to change state.

Mostly, this thought arises from seeing BMWs get unpredictable when batteries get low. This is sort of related. I had an X5 where the car alarm went off when the battery got low (and needed replacement). Impossible to shut off w/o actually disconnecting the battery. Charging the battery and starting over? All sorts of codes.

Good luck!

dtmurf · 02-26-2023, 04:43 AM

Quote:

Originally Posted by Mosely

Yep, first thing I did was pop off the battery cables to see if it would reset anything but no dice. I'm going to recode all the ECUs with ESYS tonight.

Did that work or are you in the fetal position crying the dark somewhere?

chmura · 06-05-2023, 10:06 AM

What is the update on this??

KevinC · 06-06-2023, 01:41 AM

Battery may just be weak. VW's react just like this when the battery is discharged.

Chris N · 06-08-2023, 08:39 AM

I have also been monitoring this thread. Any updates?

02-20-2023, 06:49 PM	#1
Mosely Lieutenant 594 Rep 450 Posts Drives: '18 M2 \| '20 X5 \| '07 E92 Join Date: Mar 2017 Location: SoCal iTrader: (1)	Did Bimmerlink Battery Registration Brick my ECU? So I replaced the battery in my OG M2 yesterday. Same specs as the OEM one from BMW so just needed to register it in Bimmerlink. Did the registration successfully with no errors or issues. Turned the car off. Went to go for a drive today and the dash lit up like a Christmas tree with error codes. Bimmerlink says there are errors in basically every single module and can't clear them. The car will start and drive but half the buttons don't work, headlights won't turn on, rev match disabled, etc. I have no backups to restore from since I wasn't doing any actual coding in Bimmercode/etc. Have coded cars before with Bimmerlink/Bimmercode and never had any issues like this. Am I SOL and need to take it to the dealer for a full reflash? I don't have my E-SYS laptop anymore but can probably rig up and old desktop in the garage if needed. __________________ IG Photo Gallery: instagram.com/dr_m2sko/
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02-21-2023, 05:27 PM	#2
Fred Conoway Second Lieutenant 365 Rep 210 Posts Drives: 2021 F87 M2 Competition Join Date: May 2021 Location: Detroit, MI iTrader: (0) Garage List 2021 BMW M2 Competi ... [0.00]	Dumb question, but it does need to be asked; Have you checked the terminals on the battery to make sure they are secure and not touching anything metal (body, brackets, etc)? __________________ 2021 F87 M2 Competition, Sunset Orange, 6-speed 2010 E60 535i xDrive, Space Gray, Auto (sold, but still in the family)
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02-22-2023, 11:18 PM	#4
Zeese a coffee drinker 96 Rep 162 Posts Drives: 2017 BMW M2 6MT (LBB) Join Date: Jan 2020 Location: San Francisco Bay Area iTrader: (2)	This sounds grim. I would disconnect the battery for an extended period of time and then reconnect it (with fingers crossed and all). There are recommendations online suggesting 15 min. Why not. Maybe 30 min. Long enough for all connections to change state. Mostly, this thought arises from seeing BMWs get unpredictable when batteries get low. This is sort of related. I had an X5 where the car alarm went off when the battery got low (and needed replacement). Impossible to shut off w/o actually disconnecting the battery. Charging the battery and starting over? All sorts of codes. Good luck!
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06-05-2023, 10:06 AM	#6
chmura Colonel 1558 Rep 2,505 Posts Drives: 2019 M2 Competition Join Date: Aug 2009 Location: Orange County, California iTrader: (1)	What is the update on this?? __________________ 2019 M2 Competition- October 2, 2018 ED 2011 BMW M3 Sedan Alpine White Picked up via ED 9/27/2011 & Redelivered 11/23/2011 SOLD
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06-06-2023, 01:41 AM	#7
KevinC your average JAMF 3101 Rep 4,094 Posts Drives: '21 M2 Comp, '19 Golf R Join Date: Oct 2005 Location: Cochise County, AZ iTrader: (0) Garage List 2019 VW Golf R [0.00] 2021 BMW M2 Competi ... [0.00]	Battery may just be weak. VW's react just like this when the battery is discharged. __________________ '21 M2 Comp '19 Golf R
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06-08-2023, 08:39 AM	#8
Chris N Second Lieutenant 153 Rep 247 Posts Drives: BMW M2c Join Date: Sep 2016 Location: Cincinnati, OH iTrader: (0)	I have also been monitoring this thread. Any updates?
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