What does 'resume' mean on a car?

[Theo]

resume is one of the function buttons in a car's cruise control system, and its role is to restore the previously set speed with one click. The cruise control system (CRUISE-CONTROL-SYSTEM), abbreviated as CCS, is also known as the cruise control device, speed control system, or autonomous driving system. Here is a related introduction: 1. Its function is: After setting the speed and switching it on as required by the driver, the system automatically maintains the speed without the need to press the accelerator pedal, allowing the vehicle to travel at a fixed speed. With this device, drivers no longer need to control the accelerator pedal during long-distance driving on highways, reducing fatigue and unnecessary speed changes, which can save fuel. 2. Working principle: The system mainly reads the pulse signal from the speed sensor and compares it with the set speed, then issues commands through precise electronic calculations to ensure the most accurate fuel supply for the vehicle at the set speed. 3. Precautions: Do not use the speed control system when driving on roads with heavy traffic or poor road conditions (such as slippery surfaces, loose gravel roads, or roads after heavy rain); after the system is turned on and the speed exceeds 40 kilometers per hour, do not shift the gear lever into neutral without pressing the clutch pedal, as this may cause the engine to over-speed and lead to damage.

[IkerLynn]

Did you see the RESUME button on the steering wheel while driving on the highway? This button is the resume function for cruise control. For example, if you set the cruise control to 100km/h and then hit the brakes or press the cancel button midway, the cruise control will pause. When the road conditions improve, pressing RESUME will automatically accelerate the car back to the previously set 100km/h. Note that you must have previously set a speed for it to work, otherwise it won't respond. This feature is especially useful for long highway drives, as you don't have to keep pressing the accelerator, but it's safer to turn it off during rainy weather or on winding roads.

[LaAbel]

The RESUME button is usually located on the right side of the steering wheel or on the stalk, primarily used in conjunction with the cruise control function. From my experience, for example, if you set the cruise control at 80 km/h and encounter a toll booth requiring deceleration, the cruise control will automatically disengage. When you want to resume cruising after passing the toll booth, instead of resetting the speed, simply press the RESUME button to quickly return to 80 km/h, which is much more convenient than resetting. However, note that if the vehicle is parked and the engine is turned off, the previously set speed will be cleared, and pressing RESUME will not work in this case.

[McLydia]

This feature essentially remembers the last used cruise speed. The operation logic is straightforward: after activating cruise control, set the speed via SET → temporarily cancel with CANCEL → resume throttle control with RESUME when road conditions permit. Some models can also integrate with the LIM speed limit function, such as Mercedes-Benz's LIM/RE button combination. Actual testing shows a reaction speed approximately 0.5 seconds faster than manually pressing the accelerator, making it particularly suitable for stop-and-go situations like highway construction zones.