Diamond Key transfer
 

While rummaging around at the boneyard between several e83s i come across a key that appears almost new! I needed a key as replacement .
Can I simply bring in the newly found key to the dealership and have them program it to my car? If so what's the cost ?

You can use the "unlock and lock" function of the diamond key...but not to start your vehicle.

To program the FOB function is pretty easy. Search YT for a video--as there are many. For free, btw.

Here's what I've decided...
Going to remove the dme,ews, ignition key tumbler and the driver door tumbler.
I'll install in my car from the donor car.[emoji1696]

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It would be better to repair your old key and/or order another one from the dealer.

I agree...but i want the experience.
And if i run across someone selling the car but has no key... I'll be prepared. Huh?
https://uploads.tapatalk-cdn.com/202...90772fcef9.jpg

This still leaves you with ONE key that will start the vehicle. As mentioned earlier…you can initialize the GM to operate the central locking system with your old key…but it will no longer start the car.

And you won’t be able to keep your old key charged since it no longer fits the ignition.

God help the next owner if you ever sell…because if they need a 2nd key (remote or non remote) they’ll never be able to order one from BMW because they use the vehicle’s VIN to retrieve the encryption for the EWS transponder in the key, the DME, and the EWS control module…and now, your VIN info (which BMW has stored in the database to replace keys, ignition, & door lock cylinders) no longer is a match.

Doing this will basically create a Franken(stein)-Key. It may be alive…but it’s terrorizing the villagers! :D

Well, it's for backup or emergency purposes...you know.
Ah! Good to know...Good points!
But then...come to think about it...
I can make my own 2nd key with the AK90 key maker[emoji848]
Been reluctant to use it, but now... didn't see a real need, but until now!
Just have to learn how to use the thing...
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