Partly dead Z4

[Peter Raaijmakers]

After a couple of weeks my 2003 Z4 did not start, loading the battery did the trick but now the roof cannot be opened and I have no power on the entire dashboard. The rest seems to work fine, I was also able to make a ride. With the roof closed and no idea if I was speeding :|

I guess it must be some common cause but have no idea were to start searching.

 

[markplant]

A weak battery throws up all sorts of electrical gremlins
Might be worth having it checked over

 

[85genius]

Yeah just stick a new battery in mine went weird when the battery needed changing

 

[85genius]

Just thought actually maybe you blew a fuse or two whilst you were trying to get charge into it, would explain certain systems being completely dead

 

[Peter Raaijmakers]

Thanks, I will install a new battery, would be great if that solves the problem.

 

[Peter Raaijmakers]

The new battery indeed did the trick, up and running again.
Thanks for your advise.

 

[stevo///m3]

All's well that ends well.
Glad you got it sorted
Stevo

 

[Scooba_Steve]

Is it a weekend car? If so, get a battery maintainer, prevention is better than cure.

 

[TameRacingDriver]

Glad you got it sorted OP. I had a dodgy battery on mine. After 2 days wouldn't start. Took it to halfords to test the battery... they said it was OK. Couple of days later, car dead. Semi convinced I had a battery drain, I changed the battery. No issues since even when car hasn't been driven for a week. I agree with what the others say it seems to be very sensitive to a bad battery. Saying that my old CTR was fine one day going to the supermarket and back then wouldn't start after. Same problem. Maybe all modern cars need a good battery.

 

[benneyboy1]

I suggest you check you havent got a paristic drain on the battery i had exactly same symptoms as you but told battery ok except for fact it would drain flat if parked up for a couple of days. Futher investigation on the forum indicated can be a common issue the stereo head unit is a known issue and was causing a 0.5amp drain on the battery so i fitted a kill switch between the battery and the stereo that elimated the head unit drain but i still have another drain to identify and resolve just not had time to pull the 50 or so fuses to identify the problem circuit. If i drive the car regularly i dont have a problem.