Battery voltage dropped whilst Flashing FEM Module

BMW_1900 · 06-08-2016, 09:54 AM

Hi guys,

Can anyone advise what is the best course of action. I have made the dope mistake of allowing my battery voltage to drop whilst flashing my FEM module. I am told it is now corrupt and need new FEM module. This comes at a cost of £525 from dealership.

1) Is there any way around paying £525 from dealership? I.E Second hand FEM module?

2) With a new FEM module what do I need to do?

aboulfad · 06-08-2016, 06:14 PM

Sorry about your misfortune, did you head over to other forums and see if there are ways to "revive" it? Do you mind sharing the details, because it would help for those that don't want to listen to all the warnings when flashing ... That really sucks for you!

Using ISTA/P, there are procedures for replacing ECUs, ... As well details of what needs to be done, here's the document for FEM installation, the post install/programming looks quite involved!

dzvero · 06-08-2016, 07:23 PM

Sorry to hear that OP, it really sucks . You can find local salvage yard or try some on ebay. What happen? did you have PSU connected to your car ? did you flash everything at once?

06-08-2016, 09:54 AM	#1
BMW_1900 New Member 10 Rep 20 Posts Drives: BMW 320d M Sport F30 Join Date: Mar 2016 Location: UK iTrader: (0)	Battery voltage dropped whilst Flashing FEM Module Hi guys, Can anyone advise what is the best course of action. I have made the dope mistake of allowing my battery voltage to drop whilst flashing my FEM module. I am told it is now corrupt and need new FEM module. This comes at a cost of £525 from dealership. 1) Is there any way around paying £525 from dealership? I.E Second hand FEM module? 2) With a new FEM module what do I need to do?
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06-08-2016, 06:14 PM	#2
aboulfad Brigadier General 1594 Rep 3,945 Posts Drives: 2015 M4 MG/SO Join Date: Mar 2014 Location: MTL, QC iTrader: (0) Garage List 2015 BMW M4 [10.00]	Sorry about your misfortune, did you head over to other forums and see if there are ways to "revive" it? Do you mind sharing the details, because it would help for those that don't want to listen to all the warnings when flashing ... That really sucks for you! Using ISTA/P, there are procedures for replacing ECUs, ... As well details of what needs to be done, here's the document for FEM installation, the post install/programming looks quite involved! Last edited by aboulfad; 06-08-2016 at 06:49 PM..
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06-08-2016, 07:23 PM	#3
dzvero Lieutenant Colonel 530 Rep 1,514 Posts Drives: 2015 M$4 F82 Join Date: Dec 2015 Location: CA iTrader: (2)	Sorry to hear that OP, it really sucks . You can find local salvage yard or try some on ebay. What happen? did you have PSU connected to your car ? did you flash everything at once?
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