What is the ACC switch?

[LeLena]

ACC in automobiles stands for Adaptive Cruise Control. The ACC button is the switch for turning the vehicle's adaptive cruise control system on and off. Currently, there are mainly two types of cruise control systems in vehicles: one is ACC adaptive cruise control, and the other is conventional cruise control. The ACC adaptive cruise control system primarily includes functions such as speed adjustment, following the vehicle ahead, active braking, lane keeping, and lane departure warning and correction. Conventional cruise control only has the speed-setting function. Speed adjustment function: The driver sets a specific speed. Given the complex and varied traffic conditions on the road, it is often difficult for a vehicle to maintain a constant speed smoothly. ACC adaptive cruise control has the capability to decelerate and accelerate according to road conditions, which is the most distinctive feature differentiating it from conventional cruise control. Following the vehicle ahead function: This function ensures the distance between our vehicle and the one ahead. The driver can adjust the following distance to maintain a safe gap from the vehicle in front. Active braking function: When the vehicle is in a dangerous or near-dangerous situation, it can actively brake to a stop. Currently, this function's recognition range is limited to hazards directly ahead, with no accurate identification for side or rear hazards. Lane keeping function: The lane keeping function reduces driver fatigue by keeping the vehicle within the lane on roads with clear lane markings. The emergence of this function also marks the implementation of Level 2 driving assistance. Automatic speed adjustment frees the driver's feet, while the lane keeping function, under specific conditions, frees the driver's hands. Key switch function: ACC on the key switch allows the use of the vehicle's auxiliary electrical devices when the engine is off. Independent steering wheel button function: The independent ACC button on the steering wheel is the control switch for the cruise control. Difference between ACC and ON: Typically, when the vehicle is parked and the engine is off, the key is in the LOCK position, disconnecting the vehicle's circuits and cutting power to the entire vehicle, with the steering wheel locked. When the key is in the ACC position, some electrical devices in the vehicle, such as the radio and audio system, are powered, but other components of the vehicle remain without power.