Not long bought an X5 here in Bulgaria, and with the two keys only one works, If I replace the battery will the key work or will it need resyncing to the car, not sure how long the battery has been dead. What do BMW garages charge in the UK for resyncing keys, so I will have an idea here in Bulgaria.

Welcome to the Forum Stephen

Some Dealers will just do it as a service (No cost) others will give you coffee and a soft chair to take away the shock of the Invoice. Before spending some of your hard earned, try a couple of things.

Does the spare key start the car (it should do even if the battery is flat) if you unlock with the other (if it doesn't it may not be from that car)? If it does then leave it in the ignition while driving to see if it charges.

When the key has been charging for about an hour try syncing with the car there are several good "how twos" on the nett and You Tube so it's DIY. (done my spare a couple of times as it sits in the draw at home)

If the battery is dead there was someone on Ebay who did a battery change for sensible cost to DIY needs the key cut open and a new battery soldered in (from memory)

If all else fails a new key from BMW will set you back about £100

Enkoy your X5

Thanx Greydog.

Will try the starting first, and if it starts leaving in. If it works all well and good, if not their is a BMW dealership in Varna, about 45 mins up the motorway, things in Bulgaria tend to be about half the price of UK.

So far the X5 has been great, am sure will get years of enjoyable motoring here....

Cheers