[QUOTE=Tags;650976]Well, i tried the battery replacement DIY but no luck, the remote locking still wont work. I'm trying to look at all my options before i order one through BMW ($580 here in Australia). Apart from going direct through BMW do i have another options?

Bought a new key from BMW here for NZ$425 for my X5. They had to order it from germany. It is lot cheaper than your AUS$580.

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2004 X5 3.0d Toledo Blue