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What is the function of the accres button in a car?

2 Answers

OAriel

07/28/25 9:42pm

The accres button in the car is related to the cruise control system. Below is relevant information: Introduction: When using cruise control, if encountering a steep downhill slope, the vehicle speed may increase, exceeding the set speed, and it cannot be used for deceleration. Therefore, some drivers receive speeding tickets while using cruise control. Cruise control only adjusts the throttle automatically to maintain the set speed. When the speed exceeds the set value, it automatically reduces or even stops fuel supply. However, it does not automatically apply brakes to decelerate. On downhill slopes, if the downward force exceeds the motion resistance (including wind resistance, rolling resistance, engine braking force, etc.), the vehicle will accelerate. Suggestion: When encountering a steep downhill, it is recommended to shift to S gear because S gear can increase engine speed compared to D gear, enhancing engine braking force. This reduces the need for foot braking, preventing excessive heat generation and brake wear. However, D gear is generally sufficient for normal road conditions.

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MiguelAnn

08/12/25 2:18am

The ACC button in the car is actually pretty cool—it's used to activate the Adaptive Cruise Control system. Simply put, when you're on a long drive, pressing it starts the system, which automatically maintains a safe distance from the car ahead, adjusting the brakes and throttle if the speed gets too high or too low. This makes driving much easier for me, especially on highways or in traffic jams, as I no longer have to frequently press the pedals to slow down or speed up. It uses the car's radar and sensors to monitor the surroundings, ensuring you don't collide with others—but a quick reminder: drivers still need to keep their eyes on the road and not rely entirely on this feature. Most modern cars come equipped with ACC, so I recommend reading the manual to understand the specific steps before hitting the road to avoid accidental activation. Overall, it significantly improves driving comfort and safety, and I suggest making good use of it.

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