
Next to the gear shift lever, there is a button to turn off the engine. It features a circular arrow with the letter 'A' inside and an 'off' label in English. This function stops the pulley from rotating, reducing the engine's idle running process. After the engine shuts off, the vehicle's power supply replaces the engine pulley to keep the fan running.

I've been driving my 2018 Cayenne for over three years, and I have to manually turn off the auto start-stop every time I get in the car. On the center console near the driver's side, there's a button with the letter A inside a circle. Pressing it will display an auto start-stop deactivated message on the instrument cluster. A useful tip is to turn it off before starting the car - it makes traffic jams much more bearable. However, the Cayenne defaults to automatically enabling this function with every ignition cycle, and it can't be permanently disabled. I've heard that newer models can solve this by enabling hidden programming features. From my experience, keeping it on during highway driving does save fuel, but the frequent start-stop cycles in city driving are quite annoying and can shorten the battery's lifespan.

designed this feature with the original intention of saving fuel and being eco-friendly, but in actual use, the constant engine restart vibrations are truly uncomfortable. Turning it off is extremely simple: right after starting the car, locate the button area near the gear lever—the one with an 'A' icon is the switch. Press it, and when the indicator turns yellow, it means the auto start-stop has been successfully deactivated. Button positions vary slightly across different model years; I've seen some placed below the climate control panel. It's worth noting that the auto start-stop function requires multiple conditions to be met before activating. For instance, when the AC is set to very cold, the system prioritizes cooling and automatically suspends the start-stop feature, which is quite user-friendly.

When driving a Cayenne on long trips, you often encounter the issue of frequent auto start-stop triggering. The solution is simple: After ignition, locate the physical button with the auto start-stop symbol on the center console, usually near the drive mode selector. Press it to illuminate the indicator light, which completely disables the function, ensuring you won't be startled by sudden engine restarts during traffic jams. I recommend manually turning off the engine only when stopping at traffic lights for more than 30 seconds for better practicality. Additionally, it's advisable to disable this feature in cold weather to prevent excessive drain, especially since replacing a Porsche OEM battery costs over 8,000 yuan.

With a decade of auto repair experience, I've seen countless car owners complain about auto start-stop. The Cayenne's deactivation method is straightforward: press the physical button with an 'A' arrow in the center console within three seconds of starting the vehicle. The new touchscreen system can save personal settings. Note that when voltage drops below 70% or strong defogging is active, the system will forcibly enable start-stop. My personal recommendation is installing a start-stop memory module – it costs around a hundred bucks and solves the hassle of manual deactivation each time without affecting the original wiring warranty.

Last week, I just helped a friend tune his hybrid Cayenne. The auto start-stop feature indeed affects driving smoothness. The most reliable way is to turn it off via the mechanical button: locate the button with a circular arrow in the functional area on the right side of the electronic gear lever and press it to illuminate. Interestingly, Porsche's logic is smarter than BMW's—it only triggers the start-stop when the brake is fully depressed. To completely disable it, you can reprogram the system, but you'll lose the 12% fuel efficiency advantage certified by the Ministry of Industry and Information Technology. For daily use, it's recommended to turn it off in the city and on during highway driving. This not only reduces engine wear but also saves about 5% on fuel costs, while extending brake pad life by 20,000 kilometers.


