What is the minimum speed required to use cruise control?

[DeRonan]

When the speed reaches above 40 km/h, cruise control can be activated. The steps to set cruise control are: press the "On/Off" button, then briefly press the "-Set" button, and the car will enter cruise control mode. At this point, you only need to hold the steering wheel, and both the accelerator and brake pedals can be released. Here are some relevant details: 1. The speed is set at the current speed. To decelerate while maintaining cruise control, press the "-Set" button, and the speed will decrease by 1.6 km/h increments until the button is released; the speed cannot drop below 40 km/h during cruise control. To accelerate and maintain cruise control, press the "+Resume" button, and the speed will increase by 1.6 km/h increments. Once the desired speed is reached, briefly press the "-Set" button to confirm the setting. 2. In cruise control mode, whether you brake to decelerate or press the accelerator to speed up, cruise control will be canceled. To reactivate it, you need to press the "-Set" button again. 3. In cruise control mode, the car will automatically maintain speed on flat roads, but speed may vary slightly on inclines. This is because, in cruise control mode, fuel injection is entirely controlled by the car's computer, which determines the injection amount based on sensor parameters, resulting in some lag.

[DiEzra]

I love using cruise control for long drives, but the activation thresholds vary across different car models. Most vehicles require speeds above 40km/h to activate it. My American SUV enables it at 35km/h, but my friend's Honda only activates at 50km/h. Cruising at 70km/h on urban expressways is most comfortable—it really takes the strain off my feet. However, I always turn it off during heavy rain or sharp turns. The system's acceleration on downhill slopes can be particularly startling—once in the mountains, I almost exceeded the speed limit and had to be ready to brake and take over control. Remember, even when it's on, don't completely disengage; you still need to handle the steering and emergency braking yourself.

[BrynleeDella]

When I was learning to drive, the instructor repeatedly emphasized the safety points of the cruise control function. It is generally recommended for use on highways or closed roads, and the minimum speed limit is most accurately indicated on the dashboard. Older cars required at least 60 km/h to activate, while newer models like the Lynk & Co 03 can be set at just 30 km/h. However, it will automatically deactivate if the speed drops 20% below the set speed. Once, I set it at 70 km/h on a national highway, but it disengaged when I slowed down to 50 km/h behind a truck. Also, note that there is a delay in acceleration response when the car ahead suddenly changes lanes, so avoid using it in areas with many intersections.

[VonMaddox]

During car repairs, I've encountered many cases of damaged cruise control modules. In fact, the minimum speed limit is related to sensor accuracy. For example, Volkswagen's MQB platform requires 40km/h to ensure stable radar signals. Modified car enthusiasts should pay special attention - flashing the ECU to increase speed limits may cause low-speed cruise control failure. In emergencies, pressing the brake for 0.5 seconds immediately deactivates it, and using the manual lever is faster than the button. It's recommended to turn it off in special weather conditions - last winter, a customer crashed into a guardrail due to cruise control failure on icy roads.