BMW 125d, 2013, manual, stop start - BMW 125d S/S potential duff alternator?

Honest John Back Room » Technical matters
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Thu 2 Dec 2021 14:47
BMW 125d, 2013, manual, stop start - BMW 125d S/S potential duff alternator? - carnut1980

Hi all, this car has a new battery, but the starting problems continue, particularly after a run, although no messages or warning lights on dash.

Is it possible the alternator is faulty, but not SO faulty that it doesn't throw a dash light, or error code?

Apparently there are two different alternators for this model, and i need like for like, or the ECU will reject a new one if its wrong?

I can't remove current one myself, access is limited, but it is a VALEO unit, S:7823343

Anyone had these issues with this car? cheers

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Thu 2 Dec 2021 16:08
BMW 125d, 2013, manual, stop start - BMW 125d S/S potential duff alternator? - elekie&a/c doctor
Any reason to suspect an alternator fault ? Any tests carried out . ?
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Thu 2 Dec 2021 17:33
BMW 125d, 2013, manual, stop start - BMW 125d S/S potential duff alternator? - carnut1980

If the battery is new, but wont start the car after a run, then surely, the only other perp is the alternator?

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Thu 2 Dec 2021 17:52
BMW 125d, 2013, manual, stop start - BMW 125d S/S potential duff alternator? - elekie&a/c doctor
Sounds like an expensive guess . I think I would get some testing done first .
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Sun 19 Dec 2021 19:59
BMW 125d, 2013, manual, stop start - BMW 125d S/S potential duff alternator? - carnut1980

refurbed alternator was £110, fitted for £50, battery was dead though, so needed a charge, other than the alternator, fine since!

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