:lol:
Aircon works both ways, it doesn't just cool, it provides heat as well. The ac function really acts as a dehumidifier when in auto mode, with the car just switching between heating and cooling, and varying and the fan speed to meet and then maintain the target temperature.
When you have the 'heaters' set on auto, the knob with the temperatures is like your thermostat at home - it will try to achieve the desired air temperature set on the knob by the user. If the cabin air temp sensor sees that the cabin is 20C, and you set the knob to 22C, it will switch to heating, until the target 22C is reached. As it reaches temperature it will reduce the 'heating' and the fan speed, but still be circulating air. If you set a target temperature significantly different from the cabin air temperature it will whack the fans on full blast to try and hit the target temperature as swiftly as possible. Note that where the external air temp is higher than the target cabin temperature it will not be able to meet it without turning the ac on.
The reason why some are likely finding the 'heater' never really gets that hot is that the cabin air temperature isn't actually that far from target temperature in auto mode. It's a small space and a fairly large amount of glass so normally it's hotter inside a cabin with the windows up than outside the car anyway.
Fwiw, I just leave it on auto with the ac button on, it keeps the cabin dehumidified so I don't get a fogged up windscreen, and it heats and cools as necessary to maintain the desired cabin temperature.
Hope that makes some sort of sense?
