Battery died while flashing my car!

AddyDaddy · 09-11-2021, 12:30 PM

Hey all

Like the title says, got my 2019 M550i back from dealer and went to flash my files and while doing ecu2 car said discharged battery and shut down,
I have charger hooked up to battery now to charge, but can this have any damage done to ecu by stopping flash mid way?

Thanks.

mike@x-ph.com · 09-11-2021, 03:10 PM

you should be fine, just flash back to stock then to your tuned map

AddyDaddy · 09-11-2021, 04:33 PM

Quote:

Originally Posted by mike@x-ph.com

you should be fine, just flash back to stock then to your tuned map

Thanks mike. Curios, why flash to stock prior to flashing tune. I ask just because in my laymen eyes when you flash your tuning. Battery chargers haven't worked so far today. Going to have car flatbedded Monday to dealer and just act dumb

AddyDaddy · 09-21-2021, 03:27 PM

I bought battery charger, let it charge and was able to flash both ecu's and the egs(trans) without issue. That was stressful to say the least. Never had battery go down when flashing but now I'll hook up charger just in case going forward

derekzhu · 10-14-2021, 08:00 PM

The flash is pretty fast, I use my laptop to flash BM3 and it takes around 3 mins.
Also I used to flash the full screen carplay which takes about 40 minutes without charger hooked up, maybe the dealer drained your battery or the battery is too weak.

09-11-2021, 12:30 PM	#1
AddyDaddy Major 559 Rep 1,071 Posts Drives: i5 M60, M5's, 535.335, M550i Join Date: Jan 2015 Location: Here iTrader: (0) Garage List 2024 i5 M60 [8.25] 2019 BMW M550i Evol ... [7.50]	Battery died while flashing my car! Hey all Like the title says, got my 2019 M550i back from dealer and went to flash my files and while doing ecu2 car said discharged battery and shut down, I have charger hooked up to battery now to charge, but can this have any damage done to ecu by stopping flash mid way? Thanks. __________________ 2013 535i M, Carbon black 20' 6 M wheels, totaled. 2018 750M , 2013 M5 , Individual Silver, Bolt ons-Straight piped 2019 M550 686BK Black Chrome 20"wheels, filters, Evolve Stage 1, Res delete 2024 i5 M60 Cape York Green
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09-11-2021, 03:10 PM	#2
mike@x-ph.com Joint Chiefs of Staff 24395 Rep 191,249 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	you should be fine, just flash back to stock then to your tuned map __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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09-21-2021, 03:27 PM	#4
AddyDaddy Major 559 Rep 1,071 Posts Drives: i5 M60, M5's, 535.335, M550i Join Date: Jan 2015 Location: Here iTrader: (0) Garage List 2024 i5 M60 [8.25] 2019 BMW M550i Evol ... [7.50]	I bought battery charger, let it charge and was able to flash both ecu's and the egs(trans) without issue. That was stressful to say the least. Never had battery go down when flashing but now I'll hook up charger just in case going forward __________________ 2013 535i M, Carbon black 20' 6 M wheels, totaled. 2018 750M , 2013 M5 , Individual Silver, Bolt ons-Straight piped 2019 M550 686BK Black Chrome 20"wheels, filters, Evolve Stage 1, Res delete 2024 i5 M60 Cape York Green
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10-14-2021, 08:00 PM	#5
derekzhu New Member 0 Rep 5 Posts Drives: 2017 540i Join Date: Sep 2021 Location: Chicago, IL iTrader: (0)	The flash is pretty fast, I use my laptop to flash BM3 and it takes around 3 mins. Also I used to flash the full screen carplay which takes about 40 minutes without charger hooked up, maybe the dealer drained your battery or the battery is too weak.
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