Quote:
Originally Posted by Cyrix2k
Give it a try, but I'm 99.9% sure that won't work. The CAS comes pre-programmed with 10 key codes which are tracked by the dealer, two of those slots are filled at the factory if I recall correctly. One more limitation is that if your E70 has comfort access, only two comfort access keys can be assigned at one time (would require ISTA to deactive the lost or dead CA key before the new one is activated).
The way the gray market keys works is by violating this part of the document you cited "The key number is part of the key detection. As a maximum of 10 keys can exist for one vehicle, the key numbers 1 to 10 are stored in the CAS. The key number cannot be changed." It turns out that aftermarket tools *can* change the key number. They read the key blank and modify the key number in the CAS. On vehicles that have had the CAS firmware upgraded to 3+ (encrypted CAS), a downgrade is required for this process to work. One more note is that on the E70, the CAS also authenticates the transmission - which has not been cracked in the case of the LCI - so if a "craigslist special" coder bricks your CAS you'll be in a bad way. Sorry if this isn't completely accurate as this is from memory.
You can cut the physical key with a $100 security key cutter from ebay. I can make a video of that process if you'd like.
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This is good information; thanks
I had previously purchased a recycled key on eBay; it was a 315Mhz transmitter placed in a new case with a new key blank. The key I bought is stripped of its ID and needs to programmed with something like your CGDI or VVDI programmer. Like in your video, the car does not recognize this replacement key when I insert it.
Using ISTA-P/ISTA-D did not reveal options for me to get the key working but I did find how to assign the different key slots and personalization options in these menus. So if I can get the key to register then I can probably get the CAS personalization options to work with the different keys I hope to have.
I have been hunting for hardware options to deal with the key and your recommendation of the CGDI is another option. Thank you for that.
I will be doing this myself rather than paying someone else to do the work. I need more than 1 key and the dealer has already quoted me something like $550 for 1 key. That kind of money puts me close to buying the equipment I need to do the work myself.
I live pretty far away from civilization and access to a dealership, or indy shops with the ability to do this work. I have a self-sufficiency mindset and I figure if I can take care of this myself I will be better off.