Omega B – Y22XE – Electronic control constantly lights up

Hello, good evening.I have a problem with my wife’s car.An opel Omega 2.2 facelift with 144 hp. built in 2000. She called me the other day and said that the car had gone out of the drive and didn’t start any more.Aside from that, there was a car with a fork key in it in the amature board and on the display from the onboard computer was standing : automatic transmission.I then got the ignition strip out and I had to fix that the candleboxes were completely under water. ,the candles out , everything clean and dry made and built together again.Cars ran again perfectly but : The symbol with the fork key still lights up .I already agreed the battery but it lights up .Battery was already several hours and nevertheless the symbol lights up .AUTOMAICKETRIEBE was no longer in the on-board computer .So as said everything works again perfectly but the symbol .Next week I have to go to the tuev and the symbol burns . T the MKL that burns.How do I get the symbol out ? is there an en trick ? Thanks lg Maik