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Old 07-08-2020, 04:16 PM
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Quote:
Originally Posted by oldskewel View Post
My 2001 came with diamond keys.

When I got the car about 5 years ago, there was only one diamond key. Details in previous posts, but my solution was to buy 3x valet keys (mistake at the online dealer - non-remote master keys would have been a little better) from thebmwminipartsstore.com (?) with the BMW EWS from the factory. Then I bought 3x used diamond keys off eBay, cut the keys off, used the diamond part as key fobs, easily reprogramming the remote capabilities.

Approx $40 per valet key, $15 per used diamond key. Probably not worth the research project if getting just one, but for me, it was a car to be used by my 3x kids, so I got 3x, making the small effort well worth the cost savings. Also, sometimes it is more convenient to use just the bare valet key (when running, swimming, etc.).

Interesting thing I noticed about this solution recently - those "fobs" still have EWS chips in them - since for diamond keys, the chip is on the circuit board in the diamond head. When starting, the EWS system will see two EWS chips: the proper chip in the valet key, and also the wrong chip in the fob, from whatever car the eBay used diamond key came from. Never a problem starting, but I notice my Foxwell and PA Soft will show error messages about an invalid EWS found, or something like that.
Yeah my ebay FOB had the little chip inside. It's different than the stock diamond key setup. But I only use the blank key strictly for the FOB capabilities. So now I have essentially two key on my key chain. One key for the ignition and EWS...then the other for the remote FOB functionality.
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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit
2007 BMW X3 3.0Si -- MT6
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