What is the function of the Passat set button?
2 Answers
The Passat set button refers to the speed setting switch, which is the symbol for the 'Tire Pressure Automatic Monitoring System'. Its function is to adjust the tire pressure of all four tires to the standard level. After doing so, press and hold the set button for three seconds while observing the speedometer dial. A symbol consisting of an exclamation mark inside brackets will appear, and upon hearing a beep sound, the tire pressure of all four tires will be set according to the owner's adjustment. Tire pressure refers to the internal pressure of a car's tires, and generally, the recommended tire pressure for cars is between 2.4-2.5 bar. Below is an introduction to abnormal tire pressure: Low tire pressure: If the pressure is too low, the tire body deformation increases, cracks are prone to appear on the tire side, and flexing movements occur, leading to excessive heat generation, which accelerates rubber aging, fatigue of the cord layer, and cord breakage. It also increases the tire's contact area with the ground, accelerating wear on the tire shoulders. Low tire pressure makes the car's steering heavier, affecting the vehicle's handling, and can also cause the car to drift. High tire pressure: If the pressure is too high, the tire cords are subjected to excessive stretching and deformation, reducing the elasticity of the tire body. This increases the load on the car while driving, and impacts can lead to internal cracks and blowouts. Additionally, high pressure accelerates wear on the tire tread and reduces its resistance to punctures.
I've driven a Passat for many years, and this SET button is the core switch for cruise control. When you want to maintain a steady speed on the highway, first press the main cruise control switch located at the bottom left of the steering wheel to activate the system. Once the cruise icon lights up on the dashboard, press the SET button to lock in the current speed. At this point, the car will automatically maintain that speed, so you don't need to press the accelerator, making long-distance driving much easier. To increase speed, press the + button; to decrease speed, press the - button. To pause cruise control, simply press CANCEL or step on the brake. Note that it's best not to use it during rainy days or on winding mountain roads, as the system won't automatically avoid sudden changes in road conditions—manual intervention is required. Before setting, make sure your speed is legal, as speeding with cruise control can result in traffic violations.
