How to Turn Off the S90 Auto Start-Stop?
3 Answers
S90 engine start-stop can be turned off by pressing the brake pedal. Generally, the engine will automatically shut off after about two seconds. When you release the brake and press the accelerator or gently turn the steering wheel, the engine will restart. Related details are as follows: 1. The start-stop system is referred to in English as the Start-Stop system. When the vehicle is in a stopped state (not in park), the engine will pause operation (instead of maintaining traditional idle speed). During this pause, the engine's lubricating oil continues to circulate, keeping the engine internally lubricated. When the brake pedal is released, the engine restarts. Since the lubricating oil has been continuously circulating, frequent stops and starts will not cause wear to the engine's internal components. 2. Many modern vehicles use engine start-stop technology. When the vehicle is stationary, the required electrical power is supplied by the AGM battery, and power-intensive systems like the air conditioning switch to a fan-only mode. Therefore, if the vehicle remains stationary for too long, it may affect cooling efficiency or cause the cabin to become stuffy. In such cases, the start-stop system can be manually turned off.
Regarding how to turn off the auto start-stop feature on the Volvo S90, as a car enthusiast, I find it quite simple. After starting the vehicle, look for a button labeled 'Off' or 'Auto Start-Stop Disable' near the center console, typically located next to the gear lever or in the steering wheel control area. Pressing it will deactivate this function. However, the system may automatically reactivate after each restart, so you'll need to press it repeatedly. The auto start-stop feature is designed for fuel efficiency and environmental protection, but in congested intersections, frequent engine restarts can disrupt driving comfort, especially when using air conditioning in summer—brief pauses may cause discomfort. As a suggestion, turning it off in urban areas with frequent stops can enhance the driving experience, while reactivating it during long-distance drives is more economical. Check the vehicle's user manual or video tutorials for the exact button location—don't worry, the operation isn't complicated.
I always turn off the auto start-stop when driving my S90 daily because it's overly sensitive—even small pauses trigger engine shutdown. The off button is located on the left side of the steering wheel or the lower part of the center console, marked with a round button labeled 'A OFF'. Press it once until the light comes on to disable the feature. Note that the system defaults to reactivating after each restart, designed for environmental reasons, but for me, the fuel savings are minimal, and it disrupts smooth driving—especially the start-stop noise when carrying kids, which is annoying. Personally, I find driving smoother with it turned off, and it prevents premature battery wear from frequent starts. If you frequently drive on highways, keeping it on might be fine, but for city commutes, turning it off is more hassle-free. The operation is simple and takes just seconds.
