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Discussion Starter #1
I wanted a spare key as my car only came with 1 diamond key and the valet key.

Bought a genuine 2nd hand key from ebay and a pattern key blank. I planned to reprogramme the chip in 2nd hand key to my car, get the blank cut and combine the two.

I reprogrammed the 2nd hand key using the standard method shown here: How to program your BMW remote key fobs to your car - E46 DIY (Guides only) - E46 Zone Forum

Worked OK- both keys make the locks bounce up and down indicating success. But the 'lock' (middle) button on the 2nd hand key doesn't work. It unlocks the car and the boot fine though.

The switch for the middle button must work as you need to press it 3 times to reprogramme the key.

Any ideas??
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