Actually you are pretty much stuck until the vehicle decides to reset itself. What it is is a safety precaution that keeps your radio from working in other vehicles. Sometimes the wait is 10 minutes, sometimes an hour, sometimes 24 hours. Just depends on how many times the incorrect code was entered. For this waiting period you have to leave the key in the on position for the radio to recognize the reset. Then in will change to say code again. Good luck and I hope the wait is a short one.
I dont know if the unit needs to be powered on the entire time or it's internal battery will let the timer still run while the car's off.
You can just turn the key to the accessory position instead of 'on' so you arn't powering all of the other computers, lights, sensors, gauge pod etc., That would drain your battery more. It can't tell the difference between engine running, engine off, or accesory position anyways.
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