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What is the assist button in a car?

2 Answers

OWeston

08/30/25 6:32am

The assist button in a car refers to the auxiliary brake. When 'assist-plus' appears on the car dashboard, it indicates a system assisting during parking. Definition of auxiliary brake: An auxiliary brake is a safety assist device used when parking or reversing a car. Currently, the mainstream system consists of a reversing camera and an in-car display forming the parking assist system. Function of auxiliary brake: When reversing, the front display can show real-time video from the rear reversing camera, making reversing safer. The system is composed of ultrasonic sensors (commonly known as probes), a controller, and a display (or buzzer).

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ClaireRose

09/12/25 3:33am

When I first bought the car, I was also puzzled about what the ASSIST button was for. Later, I discovered it's actually the master switch for the vehicle's driving assistance system. My car has an ASSIST button with a steering wheel icon on the left side of the steering wheel. Pressing it brings up the entire suite of assistance functions on the central display. Things like lane keeping and automatic braking can all be toggled here. Once when I was drowsy on the highway and the car drifted out of lane, the steering wheel suddenly vibrated to alert me - that was this system at work. The manufacturer recommends turning off lane keeping in the city, otherwise the steering wheel keeps resisting you during frequent lane changes. For custom settings, just long-press the button to enter the detailed menu where you can adjust sensitivity and other parameters. This feature really makes long drives much less tiring.

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