This is a strange one, last week my bmw x5 2002 went into the garage to have a door handle fixed and MOT, after they had done with it I drove it 300 meters back home, the next day the car would not start and had to be jump started. I left it to sit a day or so as to test the battery and it started no problem, I presumed maybe they left something on. I don't drive as much as I used to and it sits on my driveway a lot, anyway I took it to the garage yesterday to get the FSU replaced.. they couldn't do it so I drove it again 300 meters back home. This morning I reversed the car to the bottom of the drive (started fine) so I could get my kids in then went back out 10 mins later and it wouldn't start, just clicked. The mirrors and steering column seem to still be moving as usual, I know usually they tend to eventually stop after trying to start it so many times. I did accidentally press buttons on the fob while turning the key, would this have disabled the car from starting or damaged it?

Thanks for any help or info

Just tried to jumpstart which I have done many times before but its just not wanting to start, the power that was left (in the steering wheel column/lights etc) is slowly going. Now I'm thinking its not the battery and something else, any ideas?

From this and your previous posts I would change your garage.

1st They disconnect your radio for no reason then tell you its to dangerous to lift the LPG tank to put right their error !!!!!!! Well they lifted it to change the battery and unplug your radio??

2nd They cant change the FSR ? it's a 20 minute job for goodness sake (search you tube) the only tool needed is a cross head screw driver to remove trim, the FSR clips in and out. A failed FSR can cause all sorts of issues including unexplained Battery drain (just Google it)

As for charging the posts under the bonnet are the correct place but it will take up to 24hrs to fully re-charge the battery with a decent charger Ctek or similar a quick 1/2hr burst wont do it. If the Battery has failed it should be under warranty so should be a free exchange, assuming your original garage fitted the correct rated battery? If not there may be some cost.