This the MKZ forum but for this issue that doesn't really matter. Will the mirrors unfold with the switch? If so, try the reset procedure:
To reset the power-fold feature, use the power-folding mirror control to fold and unfold the mirrors. You may hear a loud noise as you reset the power-folding mirrors. This sound is normal
Outside of that, until you can get it to the dealer, I'd try disconnecting the battery for a while. Maybe that'll reset the system when you reconnect.
Remember to follow the procedure in the manual for the ECU to re-learn fuel and idle trims:
Because your vehicle’s engine is electronically-controlled by a computer, some engine control settings are maintained by power from the battery. Some engine computer settings, like the idle trim and fuel trim strategy, optimize the driveability and performance of the engine. The clock and radio station presets are also maintained in memory by power from the low-voltage battery. These settings are erased when a technician disconnects and connects the low-voltage battery.
To restore the settings, do the following:
Note: Until you switch the ignition to the on position, you will receive a message in your information display stating that your vehicle is not in park.
- Apply the parking brake.
- Shift into park (P) or neutral (N).
- Switch off all accessories.
- Press the brake pedal and start your vehicle.
- Run the engine until it reaches normal operating temperature. While the engine is warming up, complete the following: Reset the clock. See Audio Unit. Reset the power windows bounce-back feature. See Power Windows. Reset the radio station presets. See Audio Unit.