My wife's 2003 E46 325xit wagon displays the battery fault light for about one minute after initial startup. Then it goes off and stays off the rest of the day.
No starting or performance indication of any battery or charging system problem. No belt squeal (it feels correctly tensioned).
I'm guessing there is a marginal thermal problem with whatever is used to sense a fault in the charging system.
Anyone had the same symptom and resolved it, or have any ideas?
Cheers,
danzee