There is a sign on the switch of the car air conditioner: What switch do the three arrows under the fan glass represent?

The three arrows under the fan glass represent the front windshield defogging switch.

In addition to the front windshield defogging switch, there is also a rear windshield defogging switch, which is marked with three arrows in the rectangular frame.

The defogger switch of the automobile controls the defogging of the automobile glass, and the defogging of the front windshield depends on the air conditioning system. In the center console near the front windshield, there is basically a special air conditioning outlet, which is the outlet for blowing the front windshield.

The defogging of the rear windshield is completed by electric heating wires. When the rear windshield defogging switch is turned on, the heating wire of the rear windshield will heat up.

Extended data:

When the demister works, it will consume battery power. When using, be sure to hit the car first, and then press the defogging switch on the rear window. 10~ 15 minutes later, the demister will automatically close. Of course, after you feel that your vision is clear, even if the demister has not been automatically turned off at this time, don't forget to turn off the demister manually, and remember not to use it for a long time to prevent the rear windshield from being broken.

The fastest way to defog windshield is to blow cold air, but it is not suitable for blowing cold air under some weather conditions, so hot air can also be used to defog windshield. When using hot air to demist, the air outlet for blowing the front windshield and the air outlet for blowing passengers are basically opened, and the temperature is adjusted to the highest and the air volume is adjusted to the maximum, which can make the temperature in the car rise rapidly and achieve good demisting effect.

In rainy days, there will be some raindrops in the rearview mirror, which will affect the driver's observation of the rearview mirror. At this time, the rearview mirror can be turned on for heating, and the water droplets can be removed with the help of the heating wire in the rearview mirror lens.

What's the use of the thin thread on the back window? They are really not decorations!

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