Hi guys my A6 Allroad 2005 2.5 TDI has been using a bit of water for about 2 months I have had issues with the interior lights, door locks & now the transmission has started to malfunction as in when I select drive all the lights come on the dash ( P R N D S) all light up & the gears won't change until I switch off the ignition remove key then restart the car it's OK but after a few miles the dash lights come on namely the ESP, ABS, Suspension although the car drives OK . Any help would be much appreciated.