I have 1998 audi a6 in 145000 miles.The engine runs great.It was well kept and I know the previous owner.
Very bad thing happened other night is that I forgot to turn off the engine when I was getting gas. And I filled it up.After I am done fueling I recognized that the engine was on and the second I started Pulling out the engine check light came out then I recognized my lights , blinking signals, wiper controller, and AC are down.I went to the mechanic he said nothing wrong with the engine and he reset it from battery and engine light gone but still other problems remained.He sent me an electrician and the guy did not figure it out neither.They say we need to put it on computer.Any suggestions or idea what happened?Am I facing very big issue here. I admit that I am dumb to not turn engine off when I was getting gas, but audi should have taken this into account.
Thanks for your help already

 

battery was so low it would send these codes, charge the battery up or change it

 

battery indicator shows fine and before this incident eveyryhing was normal.And can batter cause lights, all lights, signals, ac, wiper to be out?
and thanks for the reply

 

try to jump start it, 12v isn't enough to start it the cranking amps are low

 

Anyone can think of any other possibilities than battery?Because when I start the engine it never gives any hint about the battery, it works fine and drives fine.Did you hear it happened to anyone before(taking gas while engine is on) cause problems?
It is really amazing to see how much people know about audi.