What is the Mercedes-Benz DSR mode?

[McOlivia]

DSR stands for Downhill Speed Regulation, which is an assistive tool for downhill driving. Introduction to DSR: DSR maintains the vehicle speed at the level set in the onboard computer. The steeper the downhill slope, the stronger the braking effect DSR applies to the vehicle. DSR works in conjunction with the vehicle's ESP, where the ESP controller issues commands to provide a torque to the steering wheel through the steering controller. Purpose of DSR: On flat roads or when driving uphill, the braking effect of DSR is minimal or non-existent. As a downhill speed-limiting assistant, it can restrict the speed during descent, eliminating the need for constant brake application. This system alerts the driver to take appropriate measures in emergency situations, thereby enhancing driving safety.