new key programming

[batmanken]

I just got a used spare key for my 2012 128i (no comfort access) and was wondering if it's possible to program it to work with my car, I just want to have it as a backup just in case. recently took it to BMW dealer and asked and they told me I can't use it and have to order a new key from BMW. any ways to program this to work? thanks.

[jaye944]

If your car has CA and you want the key to do the CA bit, it must be dealer programmed.

I think the key will work if you just put it into the slot at least once, but I think that is just to lock/unlock and start, it wont start the car with the key in the ignition

I also believe the key is coded to the VIN

Originally Posted by batmanken

I just got a used spare key for my 2012 128i (no comfort access) and was wondering if it's possible to program it to work with my car, I just want to have it as a backup just in case. recently took it to BMW dealer and asked and they told me I can't use it and have to order a new key from BMW. any ways to program this to work? thanks.

[DaZuc]

You cannot program a used key AFAIK.

If you want a backup order the plastic key + empty plastic FOB. Shouldn't be more than $100.

ISTA can program CA keys so you can skip a trip to dealer.