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What are the three upward wavy arrows in the car?

4 Answers
VonSkylar
08/29/25 6:41am
Car three arrows upward is the car defroster switch. Here are some related expansion materials: 1. Classification: The front windshield defroster is represented by a fan-shaped pattern with three upward wavy lines, while the rear windshield defroster is represented by a rectangular pattern with three upward wavy lines. 2. Function: The defroster switch controls the defroster, which reduces moisture, fog, and frost on the front and rear glass surfaces to improve visibility. 3. Usage: When there is fog inside the car, press the defroster switch, the indicator light will turn on, and the defroster will work for a period of time until the fog on the glass disappears; after the preset time, the defroster will automatically turn off. To manually turn off the defroster, press the defroster switch again.
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Adalynn
09/11/25 4:17am
In the car, when I see those three wavy arrows pointing upwards, I always tell people it's the fan speed increase button for the air conditioning system. Pressing it makes the fan blow stronger, cooling or warming up the car faster. Why is it designed with waves? It simulates the feeling of wind, with the upward arrows indicating increased airflow, distinguishing it from the temperature adjustment knob, which usually has a single arrow indicating hot or cold direction. I recommend using this manual fan speed adjustment more often in auto mode, especially during summer when the sun is blazing, as too low a fan speed can make the car uncomfortably hot and affect driving comfort. If neglected, dust accumulation around the button may make it less responsive, so just wipe it regularly with a soft cloth. Overall, it's a little helper ensuring a pleasant driving experience.
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VonMiranda
10/25/25 5:06am
Speaking of the three wavy arrows pointing upwards button in the car, I must remind you that it specifically controls increasing the air conditioning fan speed. As an experienced driver, I prioritize road safety – on hot days, if the airflow is too weak, the stuffy heat inside the car can cause drowsiness and increase accident risks. Pressing this button can quickly cool down the cabin and improve alertness. Don’t just rely on automatic settings; manual intervention is more effective during highway driving or traffic jams. It’s similar to boosting the heater in winter to defog windows and maintain visibility. Occasionally check if the button functions smoothly to avoid jamming and inconvenience. Safety first – using it properly ensures a more secure journey.
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Gabriela
12/08/25 5:29am
When I first started learning to drive, I was curious about the three upward-pointing wave symbols in the car. Later, I found out they were for adjusting the air conditioning fan speed—pressing it increases the airflow, making it more comfortable. For example, on a hot day when the car feels stuffy, pressing the fan speed up button makes the AC blow harder, cooling things down much faster. Although it looks like a wave arrow, it's not the same as the single arrow symbol used for temperature adjustment. It's easy to confuse them at first, but checking the manual clears it up. It's a simple operation—just press and feel the difference—no need to overcomplicate it.
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