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What do res and set mean?

2 Answers

McEvan

07/24/25 12:40am

Car steering wheel res and set buttons are mainly used for cruise control. res means reset, and set means set. The following are the functions and usage methods of res and set: Functions and usage of res: res has two functions. One is to restore the set speed after temporarily canceling cruise control, and the other is to accelerate to the set speed after setting the cruise control speed. The usage method is: when using cruise control on the highway to maintain a speed of 120 mph, then step on the brake to temporarily cancel cruise control and the speed drops to 100 mph. At this time, if you want the car to return to 120 mph, you can press the res button, and the vehicle will automatically accelerate to 120 mph. Or after setting the speed in advance, press the res button and the vehicle will automatically accelerate to the set speed. Functions and usage of set: set also has two functions. One is to decelerate to the set speed after setting the cruise control speed, and the other is to set the current speed as the cruise speed. The usage method is: when using cruise control on the highway to maintain a speed of 120 mph, if you want the speed to drop to 100 mph, you can release the accelerator until the speed drops to 100 mph and then press the set button, and the vehicle will continue to drive at 100 mph. If you were originally at 120 mph, after setting the speed to 100 mph, press the set button and the vehicle will automatically decelerate to 100 mph.

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Gail

08/10/25 8:25pm

I've helped many people in the automotive field, and when discussing RES and SET, it usually refers to the buttons on the car's cruise control system, which are quite commonly used. RES is short for Resume, meaning the resume function—for example, if you set a cruising speed on the highway but hit the brakes to pause, pressing the RES button when the road conditions stabilize will automatically return the car to its original speed and continue driving. SET is short for Set, responsible for setting the speed; after reaching the desired speed, pressing SET locks it in, eliminating the need to keep pressing the accelerator. This feature is particularly friendly for long-distance driving, helping to reduce foot fatigue and enhance comfort. However, the key is not to rely on it as autonomous driving. Avoid using it in busy city traffic or on sharp curves, and always maintain control of the steering wheel and brakes. Safety comes first, so familiarize yourself with your car's button locations before use to avoid mishaps caused by misoperation.

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