New Key Needed - Looking for a cheaper option than a stealer

[CarbonBlackM5]

One of my keys will lock/unlock the car but will not start it. My BMW specialist said it is a coding issue and wont communicate with the immobiliser.

I know a stealer will charge a lot for a new key so if I was to buy a genuine one from ebay would a specialist be able to code it for use with the car?

[Quinten]

£132 I paid for key and 'valet' key, so around £110 for just the key. I would take no chances...

[CarbonBlackM5]

mmm, thought that migth be the case.

My car was in with DMWorx on Friday and I thought your car was there Quinten but it was someone else's Silverstone Blue M5. Not often you see two M5 in at one time.

[CarbonBlackM5]

jz325i said:

Have you tried changing the battery and re-coding it yourself? It's a bit of a faff and you need all the keys handy, but it's in the owners manual (at least that's all I had to do on another E39 5 series).

It was the key that I was using all the time and just stopped starting the car. It opens and closes the doors OK so not sure if it would be the battery but its worth a try.