90 UNDERSTANDING YOUR INSTRUMENT PANEL
…Upper Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . 122
…Heated Rear Window (Optional) . . . . . . . . . . . 123
…Windshield Heater (Optional) . . . . . . . . . . . . . 123
…Residual Engine Heat Utilization (REST) . . . . 124
Q Air Conditioning, Regulated (Optional) . . . . . . 124
…Climate Control (on Vehicles with
Air Conditioning) . . . . . . . . . . . . . . . . . . . . . . . . 125
…Dehumidification
(on Vehicles with Air Conditioning) . . . . . . . . 126
…Air Conditioner for the Rear Passenger
Compartment (Optional) . . . . . . . . . . . . . . . . . 127
…Air Recirculation . . . . . . . . . . . . . . . . . . . . . . . . 128
…Air Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Q Electric Blower (Optional) . . . . . . . . . . . . . . . . . . . 130
Q Heater Booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Q Auxiliary Heater – Water or Air Heater
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
…Auxiliary Heater Switch . . . . . . . . . . . . . . . . . . 134
…Timer Auxiliary Heater . . . . . . . . . . . . . . . . . . . 134
…Settings with the Auxiliary Heater
switched on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Q Auxiliary Heat Exchanger in Load Compartment,
only with Auxiliary Heater (Optional) . . . . . . . . 139
Q Auxiliary Heater – Tips for Coping
with Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
…Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
