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05-26-2022, 02:42 PM | #1 |
New Member
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Proper Way to disconnect battery to not Brick FRM ?
IS there any "proven" method for safely disconnecting/reconnecting battery without bricking the FRM?
I find it quite annoying that something as basic as disconnecting negative battery terminal to safely work on vehicle electronics or even swap out seats, can cause a key vehicle module to stop functioning. I currently have my FRM sent out to be reflashed. Ill obviously need to reinstall the FRM as well, whats the best way disconnect/reconnect module so it doesnt brick upon reinstallation? |
06-21-2022, 09:12 PM | #2 |
Private First Class
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Rep 182
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I've never seen an FRM get bricked from disconnecting a battery and I was a BMW tech for a few years. The FRM typically gets bricked when your voltage is low and/or you have a voltage spike.
The 1 thing we always did with eXX chassis cars was to always keep a battery charger attached if ignition was on, otherwise either ignition off or engine on. |
Appreciate
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