Audi A6 – 2007
Since I bought the car 2.5 years ago at a main Audi dealership it’s had an intermittent battery drain which I’ve tried all sorts to trace. It’s getting steadily worse and none of the ‘standard’ techniques have traced it yet, mostly due to the intermittency of the fault. The dealership has had the car for two days & unable to trace either – not an easy one ….
· The battery was replaced when I bought the car.
· Often the car will sit for a week staying at 100% then hours later it’s at 10% (regardless of how much the car is used) before Canbus arrests the drain (I think) allowing it to always start. The fact it ALWAYS starts makes me think the Canbus is ok.
· There was a recall for water leaking into the electrics which has been done but I stripped it all out myself & double checked - dry as a bone with no water marks.
· The car is stock, nothing changed at all except the towbar, which was fully electrically checked recently.
· I’ve tried to check the battery with a multimeter but both times had nil readings and both times got a spark across the terminals and probe wire heating before disconnecting in case of a short or multimeter damage!
· The fact that the battery has been depleted so many times now (approx. twice a week these days although it doesn’t get driven much) makes me suspect the car’s battery meter. The indications often don’t seem to add up: very fast drain on some occasions, varying rates of recharge more often than not and the fact that the battery has taken such a beating and not given up the ghost yet.
Any thoughts folks?
Since I bought the car 2.5 years ago at a main Audi dealership it’s had an intermittent battery drain which I’ve tried all sorts to trace. It’s getting steadily worse and none of the ‘standard’ techniques have traced it yet, mostly due to the intermittency of the fault. The dealership has had the car for two days & unable to trace either – not an easy one ….
· The battery was replaced when I bought the car.
· Often the car will sit for a week staying at 100% then hours later it’s at 10% (regardless of how much the car is used) before Canbus arrests the drain (I think) allowing it to always start. The fact it ALWAYS starts makes me think the Canbus is ok.
· There was a recall for water leaking into the electrics which has been done but I stripped it all out myself & double checked - dry as a bone with no water marks.
· The car is stock, nothing changed at all except the towbar, which was fully electrically checked recently.
· I’ve tried to check the battery with a multimeter but both times had nil readings and both times got a spark across the terminals and probe wire heating before disconnecting in case of a short or multimeter damage!
· The fact that the battery has been depleted so many times now (approx. twice a week these days although it doesn’t get driven much) makes me suspect the car’s battery meter. The indications often don’t seem to add up: very fast drain on some occasions, varying rates of recharge more often than not and the fact that the battery has taken such a beating and not given up the ghost yet.
Any thoughts folks?
