Recode key from old e92 to new e92

reductase · 10-31-2017, 07:45 PM

Last year our e92 got totaled and I still have the spare key (non comfort access). Insurance replaced it with a 1 year newer model with comfort access.

Is it possible to reprogram the old key for the new car? Is it DIY or need to include the local service center?

ctuna · 11-01-2017, 12:25 AM

http://www.bimmerfest.com/forums/sho...d.php?t=903551

look at the posts by mashman especialy 13

RocketSurgeon · 11-01-2017, 12:42 AM

Used keys can technically be reused if they are reset first. I know of a couple places that can reset a used key to virgin for around $20. The virgin key would then need to be programmed to the CAS with something like Autohex. GCoding BMW will program your used key for $100, or supply and program a key for $200. The CAS is a complicated, encrypted system that requires serious tools to work with.

reductase · 11-01-2017, 10:42 AM

Thanks for details and the link - super helpful to understand the underlying format.

10-31-2017, 07:45 PM	#1
reductase Private First Class 16 Rep 108 Posts Drives: e92 335i M sport Join Date: Feb 2017 Location: Bay Area, CA iTrader: (0) Garage List 2013 335i [0.00]	Recode key from old e92 to new e92 Last year our e92 got totaled and I still have the spare key (non comfort access). Insurance replaced it with a 1 year newer model with comfort access. Is it possible to reprogram the old key for the new car? Is it DIY or need to include the local service center?
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11-01-2017, 12:25 AM	#2
ctuna Lieutenant General 1911 Rep 13,100 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	http://www.bimmerfest.com/forums/sho...d.php?t=903551 look at the posts by mashman especialy 13
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11-01-2017, 12:42 AM	#3
RocketSurgeon Lieutenant 264 Rep 459 Posts Drives: 2008 135i Manual, CBR650F Join Date: Jan 2017 Location: NC iTrader: (0)	Used keys can technically be reused if they are reset first. I know of a couple places that can reset a used key to virgin for around $20. The virgin key would then need to be programmed to the CAS with something like Autohex. GCoding BMW will program your used key for $100, or supply and program a key for $200. The CAS is a complicated, encrypted system that requires serious tools to work with.
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11-01-2017, 10:42 AM	#4
reductase Private First Class 16 Rep 108 Posts Drives: e92 335i M sport Join Date: Feb 2017 Location: Bay Area, CA iTrader: (0) Garage List 2013 335i [0.00]	Thanks for details and the link - super helpful to understand the underlying format.
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