What is the RES function in BMW?
2 Answers
RES in the BMW 5 Series refers to speed adjustment. On the left side of the steering wheel, there are three buttons and a dial. The three buttons are SET, RES, and I/O, all of which control the cruise control function. The functions of these buttons are: 1. SET is used to set the current speed as the cruising speed, RES is used to recall the cruising speed before the cruise control was interrupted, I/O is used to turn the cruise control function on or off, and the dial is used to adjust the cruising speed. 2. The core technology of the all-wheel drive system is the transfer case developed by Magna Steyr in Austria, which continuously adjusts the torque distribution.
As an automotive technology enthusiast, I particularly love BMW's RES function. RES stands for 'Resume' and is a key button in the cruise control system. After setting your cruising speed, if an emergency requires you to brake and temporarily cancel the cruise, simply press the RES button on the steering wheel, and the vehicle will automatically return to the previously set speed, eliminating the hassle of manually readjusting the speed lever. This is especially convenient on highways—for instance, during long drives from Beijing to Tianjin, I use it to save energy, glance less at the dashboard, and stay more focused on the road ahead. BMW's design incorporates ergonomics, placing the RES button within easy reach and ensuring rapid response. Technically, it works by storing data points in the vehicle's electronic control unit to ensure precise execution. For safety, it's recommended to use it only on open roads and turn it off in heavy traffic to prevent accidents. In models with adaptive cruise control, RES also integrates distance recovery, enhancing overall driving comfort.
