AUDI A6 ELECTRIC OPEN AUTOMATICLY

Not sure if I understand. I believe you are asking me about your keyless entry. If that is indeed the problem, sounds like you may have a button sticking. Is this the issue???

before you spend a lot of money replacing the ignition switch. unhook the battery for about 30 minutes and hook it back up again. if your radio is of the anti-theft variety (which i believe all audi's have) make sure you have the code and know how to enter it. if the problem persists you likely have a relay that has failed. if it happens again feel the tops of the relays. one will be very hot.. replace that one.

Are you having trouble with the power door locks or the power windows?

You have a bad ignition switch which is failing to deactivate/shut off with the key. The ingition switch controls the on/off of the electronics/starter/guages and the ECU for starting car/radio/windows etc...