Ford Ka Battery Warning Light

Even a partial diagnosis hinges on WHEN it comes on... engine rpm, battery loading, etc.

The car is a 2004 and you don't have the owner's manual? Anyway, the battery light coming indicates an undercharging condition, usually caused by a dying alternator or/and battery. Invest in a digital Volt-Ohm-Meter and check alternator output at idle, at the battery posts, where it should be a MINIMUM of 13.4 volts while idling, and at least 12.5 volts with everything shut off.

"les" wrote:

Sorry, but I was labouring under the misapprehension that this was a helpful site. Thanks, but I'd rather buy a new car

les spewed out this bit, and i'll scatter a few bits myself:

Well then that what you do, go out and buy you a new car. When you probably only need brushes in the alternator, or a battery. The Krusty old Geezers reply was dead on, sir.

Thanks to all. Yes I do have a manual - it says take it to your nearest Ford dealer. And apologies to the Krusty Old Geezer. I'd taken the "smartass - DEAL with it" stuff as part of his reply. I'll get my coat.

Backyard was going to tell you what *part* of the alternator was bad, just the kind of guy he is. BTW, rumor has it, the "krusty & old" part is in his pants. :)

Front or back? ;)

Ok, I'll go stand in the corner.