Which One is the Car Heater Switch?

1 Answers
RyanLee
07/29/25 2:13pm
Usually, the heater switch in a car is a rotary knob marked with red and blue colors on both sides, typically located in the center of the dashboard. Turning the knob to the red zone gradually increases the temperature, but the heater is not activated when the knob points to the red area. For cars with automatic air conditioning, the heater switch is the "AUTO" button. Pressing the "AUTO" button allows the automatic air conditioning to adjust based on the interior temperature. Here are some precautions for using the car heater: 1. Do not turn on the heater immediately after starting the car. Turning on the heater right after entering the car will only blow cold air because the engine has just started, and the radiator temperature is still low. To get warm air, allow some time for the vehicle to warm up. This also prevents unnecessary engine wear. Therefore, let the car run for a while until the coolant temperature gauge reaches half of the normal operating temperature before using the heater. 2. Do not activate the A/C button. The heater works by recycling the heat generated by the engine and distributing it into the cabin, so there is no need to engage the car's compressor. Simply turning on the heater like the air conditioning is sufficient, without pressing the A/C button.
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