Isuzu D-MAX 2020 Owner's And Driver's Manual page 646

5-20
COMFORT AND CONVENIENCE
How to Use the Heater
Normal Heating
1 3 4 5
6
Set the outlet selector dial (1) to the " " or " " position. Use the " " position for
warming your feet while defogging the windshield. Set the air selector lever (6) to the
RTU
" " position.
Adjust the temperature control dial (5) and the fan speed control dial (3) to the
preferred positions.
If your vehicle is equipped with an air conditioning system, to dehumidify the cab
interior while heating, press the A/C switch (4) to turn it on.
NOTE
• Because the heater uses the heat from the engine coolant, its heating effect is
weak when the engine coolant temperature is low.