Quote:
Originally Posted by snapdragon
I had a flat battery the other morning after a night shift, not sure if it was the driver's door handle or running VCDS the day before. 20 mins on fast charge and it was enough to start and get home by which time MMI was at 80%.
Went to bed and battery was flat again in the afternoon, so charged fully off the car. All was OK, but same again the next morning but battery gauge in MMI never moved off 10% even after 90 mins driving and finishing the charge on the charger with the charging post. I disconnected again to reboot the BEM. Still 10% after driving to work this evening, I brought my charger and 50m extension real this time, but just been out and tested an it was perfect. Still showing 10%. VCDS shows battery internal resistance 9OHM which doesn't sound right.
DO you think I fried the BEM - maybe try recoding as new battery or is it telling me the battery is junk status? Even though the battery is now fine (cranks really fast) , it is shutting stuff like the power boot and alarm off.
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I had this on mine a long while back , took ages to get to a cause and fix as it would work normally for a while and then go back to 10%
this was the answer for me http://www.audi-resource.com/mmifalsewarn.php
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A8 4.2TDI - Ice Silver, Comfort heated/cooled/massage Seats, Alcantara, Extended Leather pack, Ambient light pack, Solar roof, Night Vision, Lane change assist, Audi presense, Audi BrakeGuard, ACC Cruise, Blinds, Quad Air, AMI, Online services, Parking with rear Camera, Aluminium brushed inlays, Adaptive Zenons, High beam assist, Bose Sound, and more
Gone but not forgotten: A8 D3 2005- AMI HDD, Audible Parking, TV, NAV, Bluetooth, Hybrid TV, Aftermarket headrest monitors, Rosstech VCDS / Vagcom
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