What does the car ignition switch ACC mean?
2 Answers
Car ignition switch ACC is a control system designed to ensure safe and comfortable driving, with the Chinese meaning being Adaptive Cruise Control power supply. It is generally used in vehicles, controlled by the car key, to supply power to components such as the car audio system. Below is a detailed introduction to the car ignition switch positions: 1. ACC position: At this time, the entire vehicle is powered on, and devices like the radio and car lights can operate normally, but the air conditioning cannot be used. Wait for 5 to 10 seconds. 2. LOCK position: The steering wheel is locked, and except for the anti-theft system and small lights, the circuits are completely turned off. 3. ON position: Except for the starter, all other basic equipment can operate normally. 4. START position: Starts the engine. Except for some functions that can operate normally, all other power sources are disconnected. After releasing, the key automatically returns to the ON position.
ACC is a position on the ignition switch, short for Accessory, meaning the auxiliary power mode. When you turn the car key to ACC, the vehicle only powers certain electrical devices, such as the radio, cigarette lighter, or USB charging ports, but the engine remains completely off. This is super practical in daily life—like when I often wait for friends in the car, I switch to this mode to listen to music or charge my phone. It’s quiet and fuel-efficient since the engine doesn’t idle and waste fuel. However, don’t use ACC for too long, as it relies solely on the battery. Leaving it on for 15-20 minutes might drain the battery significantly, making it troublesome to start the car later. Remember, the ACC mode is suitable for short breaks. When starting the car, turn the key to ON or START, and wait for the dashboard lights to indicate the system is fully active. I think this design is quite thoughtful—it meets in-car power needs without compromising engine safety. Also, if you forget to turn off accessories after switching to ACC, simply removing the key won’t help. Make it a habit to check and turn everything off before parking to avoid unexpected battery drain or malfunctions.
