Show me how you would set the demister controls to clear all the windows effectively, this should include both front and rear screens.
Set all relevant controls including; fan, temperature, air direction / source and heated screen to clear windscreen and windows. Engine does not have to be started for this demonstration
Select your instructor
Set the fanspeed to maximum.
Set the heater setting to maximum.
Set the fan direction setting to 'Demist'.
Apply the rear demister.
Never start your journey until your windscreens are clear.
