The alternator needs attention or replace
Why would battery light come on then go off
If it is undercharging the battery yes, but if it is overcharging the battery no in most instances. If it fails completely the light will come on.
what causes the battery light to on a 2005 ford expedition to come on?
The battery is behind under the back seat. reach under the seat (where the back of a rider's knees would be) and lift. It's light, and should come right out.
nope the battery light would go on :P and btw i hope u get ur car over to BMW right away :P
Battery
It could
take both battery cables off the battery then replace the light should go out but will come back if problem is not corrected
Your battery is probably dying
A bad stator causes the battery not to charge. That makes the battery light come on. Some other things that can cause the battery light to come on are corroded or frayed cables or connections or a loose/bad ground cable.
Disconnect the battery leads for at least 5 mins., 10 mins. perfered. Reconnect battery leads and your done. Though the light will come back on after a few miles of driving if the engine/emissions problem is not resolved.