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I would look at the tag on the alternator in your

car and ask for the exact same part number as a replacement. I don't have any knowledge of the rebuilders, just get one with a national warranty.

Re: I wouldn't head out on a 1000 mile trip with your

Thanks Mark,

Any real differences in manufacturers of these rebuilt units? I don't even know what is in our cars but I assume a Bosch unit.

Will ANY unit I find work just fine or should I REALLY stick to a BMW brand name? Advanced Auto Parts has one made by Worldwide but they said it was an exact fit.

Regards,

Michael

I wouldn't head out on a 1000 mile trip with your

current alternator. I'd replace it before you leave. Most any auto electrical shop should be able to get you a rebuilt in a couple of days.

Re: That is an indication of bad diodes in the

Thank you...

How long do you think I have? I'm supposed to leave on a 1000+ mile round trip on Thursday... driving the M5 of course ;-)

Steve H -- Can you send one ASAP?

Michael

That is an indication of bad diodes in the

rectifier circuit in the alternator. Id start checking around for a rebuilt alternator.

Battery idiot light is on with key out / car off

Well this is a new one on me... getting out of the car and notice the red battery light is still lit on the dash. Is this a "normal" indication of something wrong (or an abnormal one;-)

Any help is appreciated. It has been on for at least an hour now

Michael