Can a used TCU be re-coded?

Natural335 · 04-24-2012, 07:18 PM

I am purchasing a used TCU to retrofit my e90, does anyone foresee an issue here?

Thanks!

GenePoole · 04-25-2012, 07:15 AM

You'll probably have to change the VIN. Most modules record the VIN or the last 7 digits of the VIN internally. It may function OK or may just throw a silent code with the wrong VIN and still work fine (some modules do, others, like ABS don't). The dealer can do this by running the "replacement" option in their software. It's possible to do this yourself with a cable and some of the leaked software floating around, but it's not trivial and the program used (Toolset32) is not very intuitive and can do damage to your electronics.

Natural335 · 04-25-2012, 10:52 AM

Thanks! I have a guy localally that knows his coding and will be coding the bluetooth. I am sure we can get this taken care of. Thanks again!

04-24-2012, 07:18 PM	#1
Natural335 Second Lieutenant 10 Rep 207 Posts Drives: 2007 E90 335i AW/Terra 6sp Join Date: Dec 2009 Location: ATL iTrader: (4)	Can a used TCU be re-coded? I am purchasing a used TCU to retrofit my e90, does anyone foresee an issue here? Thanks!
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04-25-2012, 07:15 AM	#2
GenePoole Lieutenant 46 Rep 541 Posts Drives: 2012 F30 328i Join Date: Apr 2010 Location: Brighton, IL iTrader: (0)	You'll probably have to change the VIN. Most modules record the VIN or the last 7 digits of the VIN internally. It may function OK or may just throw a silent code with the wrong VIN and still work fine (some modules do, others, like ABS don't). The dealer can do this by running the "replacement" option in their software. It's possible to do this yourself with a cable and some of the leaked software floating around, but it's not trivial and the program used (Toolset32) is not very intuitive and can do damage to your electronics.
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04-25-2012, 10:52 AM	#3
Natural335 Second Lieutenant 10 Rep 207 Posts Drives: 2007 E90 335i AW/Terra 6sp Join Date: Dec 2009 Location: ATL iTrader: (4)	Thanks! I have a guy localally that knows his coding and will be coding the bluetooth. I am sure we can get this taken care of. Thanks again!
	Appreciate 0 Quote