How to turn on the rear heater of Toyota overbearing 2700

07 overbearing 2700 exhaust warm air method: the wind first turns on the fan switch, and then turns the cold and warm switch to the red zone. When the water temperature rises, warm air blows out. The rear air heater is located in the interlayer between the car shell and the inner shell at the right rear of the trunk. The heat transferred from the coolant to the rear of the car through several meters has been reduced a lot, and the air duct to the roof air outlet is also very long. If the temperature of the rear air heater is higher, the effect will be better. Front row warm air, face blowing mode, and then the air volume will come up, provided that the water temperature must come up, and the standard photo luxury minus a rear exhaust fan, then the standard rear row warm air is blown from the front row warm air trough?