|
I've read that it is doable but very difficult and expensive. There was more info in the 5series forums.
I believe the conclusion was that BMW NA doesn't sell the keys, so you need to source it overseas and then do some coding as the dealers won't do it for you. I think some said they ended up spending about 800-900 to do the retrofit.
Let us know if you get a straight answer from BMW or your dealer.
I'm also interested.
|