Having replaced the battery in my diamond key and getting it working again a few weeks ago, it has died again.

Gave the cheap method a go, but now I want to get a new one.

Phoned a well known uk key company (we don't have autozone in the uk!) and they quoted me £180 and a four day Turnround time.

Just for a laugh I phoned my local BMW main dealer - they only want £139 and promise a 48hr Turnround!!

OEM it is then