Yup - pretty much this
My all singing, all dancing Merc had a failed alternator. It took them sooo long to find that out because there was NO sensor. A keen eyed older mechanic just started at the beginning and worked his way through the available electrics until he found the fault. Mercedes then refused to believe it was at fault because it could never have been so. Getting the part was therefore fraught with some challenges...
(gearanach #wankwankwank, Tue 21 Jul 2015, 22:06, Reply)