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Why does the tire pressure light go off after pressing the set button?

2 Answers

MacManuel

07/24/25 6:32am

The reason why the tire pressure light goes off after pressing the set button is: The tire pressure monitoring system is always on. When the tire pressure light alarms, you should check whether the tire pressure of all four tires is normal. If the tire pressure is abnormal, after identifying the cause, you need to reset it. The switch is located in front of the gear lever labeled 'set'. With the key turned on or in idle state, press and hold for 3 seconds. The dashboard indicator light will flash once accompanied by a 'ding' sound, indicating the initialization is complete. The tire pressure monitoring system detects air pressure by measuring the wheel circumference through ABS sensors. After resetting the tires, you need to drive at least 15 to 20 kilometers for the system to function properly. If a tire leaks very quickly and loses all air in less than 1 kilometer, the tire pressure monitoring may not alarm immediately. It will only alarm after driving about 20 kilometers. Therefore, this alarm signal is not direct but an indirect alarm device.

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Tucker

08/11/25 2:18am

The tire pressure warning light indicates an issue with tire pressure. When I press the small SET button, the light turns off, mainly because the system has a reset function. This button is designed to confirm that the current pressure is normal. After inflating or replacing tires and restoring pressure to the standard value, pressing SET allows the computer to relearn and turn off the warning light. While driving, if the light suddenly comes on, it could be due to a leak or temperature changes. However, I’ve noticed that pressing SET to turn off the light doesn’t mean everything is fine—you still need to physically check the tire pressure to avoid potential risks. Most modern cars use a direct tire pressure monitoring system (TPMS) with sensors that monitor pressure in real time. Resetting it simply recalibrates the normal pressure range, which is practical but shouldn’t be abused. If there’s a genuine issue, pressing SET to mask the alert could be dangerous. It’s recommended to first measure the tire pressure whenever the light comes on, confirm everything is okay, and then reset. Developing a habit of regular maintenance ensures driving safety.

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