How to Turn Off the Auto Start-Stop Function?
4 Answers
To turn off the auto start-stop function, the owner can directly press the auto start-stop button (usually a circular arrow containing the letter A). The dashboard will then notify the owner that the system has been turned off. If you wish to use this function again, simply press the button to reactivate it. Frequent engine start-stops can cause damage to related components (such as the starter and battery). The method for parking with the auto start-stop function is as follows: 1. Press the brake pedal to bring the vehicle to a smooth stop (keep the brake pedal pressed throughout the entire parking process); 2. Shift the gear to N, then engage the handbrake (for electronic handbrakes, simply pull it upwards); 3. Shift the gear to P; 4. Release the foot brake and press the one-touch start button to turn off the power.
I've been repairing cars for over a decade and often get asked how to turn off the start-stop function. After starting the car, there's usually a button near the dashboard with an 'A' letter or circular arrow symbol - pressing it deactivates this feature. However, you'll need to press it again after each engine start. I've seen many people use OBD port plug-in start-stop deactivators for convenience, but these often trigger fault codes. Actually, this feature is quite useful for city driving. If you really can't stand it, you can ask the dealership to disable it via software. But be warned - frequently disabling start-stop may accelerate battery wear, and AGM batteries (for start-stop systems) cost significantly more than regular car batteries.
Last time I picked up my new car at the 4S dealership, the salesperson personally taught me how to turn it off. There's a button labeled with a circular arrow icon below the left side of the steering wheel, resembling the refresh symbol on a phone—just press it after ignition. However, this setting resets every time the engine is turned off. If you want to permanently disable it, you'll need to visit a tuning shop to reprogram the system. I saw someone in the car owner group using a metal clip to jam the button—while convenient, I'm worried it might damage the circuitry. Nowadays, some brands have added a memory function in the settings menu, but my older model is out of luck. Remember, the start-stop system automatically deactivates in cold weather or when the battery is low.
Those who have studied the start-stop module know that the core is battery monitoring. The quickest way is to find the button with an "A" on the left side of the steering wheel (some cars have a circular arrow), pressing it will light up the start-stop prohibition indicator on the dashboard. If you find it troublesome to operate every time, try shifting to S mode immediately after starting or turning on the MAX AC mode. If you really want to disable it completely, there are three mainstream solutions: flashing the ECU costs around 800, installing a start-stop module for about 300, or like me, simply cutting the signal wire. However, modifying the wiring voids the warranty, so it's recommended to check the repair manual before making any changes.
