Low battery warning

[ztechire]

Hi Lads, sorry if this has been asked before but a search did not produce any hits, I left my car in with BMW dealer for 2 days for some small collision damage repair. New bumper and grill. When I got it back the battery warning light came on straight away. I phoned them and they said the would have no reason to dissconnect the battery. The only thing I can think of is the had the radio on for the 2 days it was in the shop and the voltage is down a bit. Anyhow, Is there a reset for this or should I just go for a long drive to charge up the battery again?
Its an F10 520D.
Thanks.

[rebel.ranter]

There's no reset for this. A good long drive might bring the battery back up but it would be better to put it on trickle charge overnight.

[JohnH]

How old is the car. If it's s 2010 the battery might just be dead

[ztechire]

Its 2011, I would agree but its just funny it happened as I drove out of the garage. Ill go for a long spin tomorrow and see what happens.
Thanks for the prompt replies lads.

[ztechire]

Update!! Guy from Joe Duffy's rang me back today, he said the battery warning if a software issue, He asked me to drop it in on monday for 2 hours for an update. I will let ye know what happens.

[ztechire]

Battery warning update, Just got time to leave the car in to Joe Duffy's today. They rejiggled the software and the warning is gone. They seemed a tad sheepish though when handing the car back he said its clear now but if it comes back it will require full diagnostics. WTF?? It was in there from 8:30am till 5pm. And it still was'nt ready when I went to collect it. Anyhow,, heres hoping:smiling:

[ztechire]

Update,,, the warning light has not come back since the software reset.