As in the title ; car started absolutely fine ; idled a few minutes with Webasto on while defrosting windscreen, set off to drop daughter to school. Half way there, noticed that the battery light had illuminated. Car ran fine to school (didn't switch off), and back to home to take a different car to work ; what I've been able to check was that with the engine running the voltage was 11.85V rather than the more usual 14+. I'm assuming alternator (120A on an AMF with a/c), but apart from an occasional squeak just after startup (the bonnet drain pipe overhead is missing so I think it gets dripped on on wet mornings), it has run smoothly thus far and kept the battery charged without any protest - so I was wondering if the regulator could be in play here? Failed alternators on older cars gave various advance warnings including radio interference and complete seizure with the belt squealing which makes me wonder if it is something less catastrophic in this instance - not had a chance to look under bonnet yet due to work. Any suggestions on any other diagnostics blocks to check through OBD or obvious things to check for would be much appreciated (ie, is there a specific fault that would indicate regulator and in which menu if so?).
Many thanks, Robin
Many thanks, Robin