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2001 E53 X5 - several flat batteries and intermittent power loss

1K views 8 replies 4 participants last post by  Ronnie 
#1 ·
Whenever I leave the car for a week or more I have a flat battery.The battery has been replaced 3 times now and the alternator has been checked. Garage has tested for drain twice and found nothing. Auto electronics specialist has found nothing.
To cap it all I am now experiencing intermittent power loss - engine just dies at low revs and the key fob is also playing up.
Where do I go from here?
 
#3 ·
Go to a different garage! Not being trite, but even my very limited knowledge of electricity is sufficient to konw it doesn't evaporate. Cars like yours do continue to use a little current when idle, but you simply must have a drain somewhere if you've gone through 3 batteries. The car is very susceptble to low voltage and the behaviour you're getting is very symptomatic of that.

Put a meter across the battery with the car powered down and see the loss (it must be there) then pull each fuse one at a time until the loss stops? Or, go to a different auto electrician?
 
#7 ·
There's a great auto electrician(Pete) down Cox Avenue, which is off Castle Lane, Bournemouth, he's probably one of the best in Dorset, he'll be able to find the problem. :thumbsup

His workshop is just behind the Autocentre on the corner of Cox Avenue and Castle Lane.
 
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