Need a bit of help

[turbulance]

Hi wonder if anyone can help
I opened my car last night all fine went to start the car and everything went off no lights nothing thought it could be the battery so climbed through and released the trunk , went to take the cover off the battery and every came back on , went to start the car and it tells me 4x4 and dsc failure . All the lights work and its starts fine just left with the message .
Just wondered what people think it could be or if it has happened to anyone?
Thanks
My car is a 2007 3L D

[Penguin]

I would check the battery connections to be sure they were not loose, and I would also check the battery voltage as a start.

[turbulance]

have checked the connections the negative nut was loose . Took the car for a drive message has now gone but the indicator on the battery is still black , are these accurate ?
thanks for your help

[ard]

4 years on the battery, could be near it's end.... be easier and faster to just replace it as opposed to (a) doing diagnostics, or (b) forgetting about it and getting stranded in two weeks at night somewhere....

[Penguin]

Originally Posted by ard

4 years on the battery, could be near it's end.... be easier and faster to just replace it as opposed to (a) doing diagnostics, or (b) forgetting about it and getting stranded in two weeks at night somewhere....

I agree. But to answer the question about the "Magic Eye" indicator, they do work for the most part, but you have to remember two things:

(1) The battery has to have a chance to fully-charge before you get an accurate indication,

(2) The eye only shows the condition of one of the six cells, so the battery could be shot and still have a green indicator.

Recent BMW's do not seem to take kindly to marginal batteries, so you might as well replace it after four years if there are any signs of battery problems.