How to Turn Off the Start-Stop Function in BMW?
4 Answers
To deactivate the BMW automatic start-stop function: The start-stop deactivation button is located on the engine start button. Simply press the "A off" button manually. Typically, the start-stop system is automatically enabled when the ignition is turned on. To disable it, just press the button (note: the illuminated light indicates deactivation). Below is relevant information about the automatic start-stop feature: 1. The engine automatic start-stop system automatically shuts off the engine when the vehicle comes to a temporary stop (e.g., at a traffic light) and restarts it when needed to proceed. Its English name is STOPSTART, abbreviated as STT. The STT intelligent fuel-saving system controls the engine's start and stop operations. 2. It is advisable to turn off the automatic start-stop in the following scenarios: Avoid using it on slopes—if the engine fails to restart after releasing the brake, the vehicle may roll backward, so remember to disable it. Additionally, if the air conditioning is set to a very low temperature, it stops cooling when the engine is off. However, if the system detects a significant discrepancy between the cabin temperature and the set value, it may force the engine to restart, rendering the automatic start-stop ineffective. Also, always disable the automatic start-stop when driving through water. For regular city driving, the automatic start-stop can remain active.
When I used to drive a BMW, that auto start-stop function was always a headache—every time I stopped, it would shut off the engine, and then buzz annoyingly when starting up again. The way to turn it off is actually quite simple: after starting the car, look for the button near the dashboard or gear lever with the letter 'A' or a circular arrow symbol, press it, and when the light comes on, it means the auto start-stop is deactivated. However, you’ll need to press it again the next time you drive, as it defaults to being on. For a more permanent solution, some newer BMW models allow you to go into the settings menu on the central screen, select the vehicle options, and then permanently disable the auto start-stop feature. I recommend turning it off during heavy traffic to reduce the vibrations from frequent engine restarts, which is also better for the battery. If you can’t find the button, check the owner’s manual or online tutorials, as its location may vary slightly between models like the 3 Series or X5. In any case, manually turning it off is more common than permanent settings, and once you get used to it, it only takes a second.
As a frequent car enthusiast, I believe understanding the BMW start-stop function requires starting with its principle: it saves fuel but causes frequent wear on the starter motor. The method is to press the button with an 'A' symbol in the car; older models have a physical button near the gearshift, while newer models like the iX may integrate it into the touchscreen settings—enter the vehicle control menu on the screen to disable it permanently. I've tested it, and turning it off in winter results in smoother engine starts, reducing cold-engine wear. If the start-stop doesn't respond, it could be due to a sensor malfunction or low battery charge automatically disabling it. Don’t forget to check the system warning lights and visit a dealership for debugging if necessary. Long-term use doesn’t significantly affect battery life, but turning it off in traffic provides a better experience—quieter and more worry-free.
Turning off BMW's Auto Start/Stop is easy: After starting the car, press the small button labeled Auto Start/Stop, usually located near the air conditioning controls. When the light is on, the system is off. You'll need to manually press it each time before driving, as it defaults to the on state. I find this quite convenient for daily commutes, especially in traffic jams where the engine doesn't repeatedly turn on and off, making starts smoother. Don't worry about battery wear; regular maintenance will keep it in good condition.
