Checking the operation of heating and ventilation

Move the control all the way to the right when the engine is warm and check if hot air comes out.

Check the function of the directional air supply at the top and bottom.

Turn the heater control in the opposite direction, after a short time only cold air should start to come out of the hole, otherwise the air damper does not close completely.

Check if warm or cold air comes out of all openings.

Check if the fan works in all modes.