Quote:
Originally Posted by DaveX53.0i
It is 100% not the battery lol it is a SINGLE click as I stated earlier
|
Single click is what you'll get with low bat on the X5 in my experience.
I happened very quickly and recovered quickly. If you can start every time with jump start you have just determined red problem is either the battery or cables from the battery. (Can be a secondary symptom from the starter going and taking too much current).
How old is the battery?
You said that B+ is below one volt when the problem presents. Next time it happens, measure voltage from B+ to ground then measure the voltage at m your cigarette socket.
If you have no volts at B+ but normal (12ish) at the cig lighter, then your problem is either cable or terminal or BST.
Jiggling battery cable having an effect indicates likely a failure at the BST. How that would fail without an accident is very puzzling but it could have been "blown" but DIY repaired improperly.
So get it to fail then take some measurements:
VBat at battery, at B+ under the hood, cig lighter and from cig lighter to B+ under hood. (That should read about 0.05 to 0.15 v)