oneandtwo Posted June 5, 2018 Share Posted June 5, 2018 (edited) My 300tdi has just started intermittently flashing its battery charge warning light, it only happens on long motorway runs after about 1/2 hr, it flashes for a fraction of a second and then off again every 20 - 30 seconds, although I’ve just done a 150 mile trip and it’s was definatly getting more regular. It seems entirely random and doesn’t follow any pattern such as bumpy roads, use of any vehicle electrics etc. its a 6 month old Denso alternator (300tdi disco model but with upgraded wiring), all connections and wiring appear clean and tight. any ideas before I replace the alternator? Edited June 5, 2018 by oneandtwo Quote Link to comment Share on other sites More sharing options...
Ex Member Posted June 5, 2018 Share Posted June 5, 2018 Most likely a poor connection somewhere. Doubtful it is the alternator. Quote Link to comment Share on other sites More sharing options...
pete3000 Posted June 5, 2018 Share Posted June 5, 2018 take the aux belt off and spin the alternator feel/listen for dodgy bearings, otherwise could be a warning light wiring issue. What are the volt readings on/off charge? Pete Quote Link to comment Share on other sites More sharing options...
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