Turn off user inputs

This function is used to turn off the possibility to use all buttons, touch screen and steering wheel buttons. No signals will be sent between the button, touch screen, steering wheel button and the ECU.
Note:
The ECU is in this mode until an ignition cycle is performed, key on/off or that the function "System shutdown" is performed.
Preconditions for the test:
Procedure:
  1. Start the function and follow the instructions in the program.