So that you miss as little as possible even when it’s dark, the standard-fitted Headlamp Assist can automatically switch on the lights. Bi-xenon headlamps with the Active Light System, dynamic range adjustment, headlamp cleaning system and cornering light function are available as optional extras. The Active Light System follows your steering movements and improves illumination of curves by as much as 90%. If you like, the standard-specification fog lamps can apply a cornering light function; it is automatically activated at speeds of up to 40 km/h when the vehicle is turning or cornering and you operate the indicators, or on tight bends.
The optional DISTRONIC proximity control system helps you to maintain a safe distance from the vehicle ahead when travelling approx. 30 to 180 km/h. The system brakes with up to 2 m/s2 when necessary and re-accelerates (if required) to the preset road speed.
If there is a risk of oversteering or understeering – on a wet road, for example – the dynamic handling control systems, which have been specially optimised for the rear-wheel and all-wheel drive of the R-Class, can intervene to help the driver restabilise the vehicle. As soon as the sensors detect a critical dynamic handling situation, brake pressure can be applied to one or more wheels as required and the engine output can also be adjusted. The electronic stability program ESP® comes as standard in the R-Class – included in this system are the Brake Assist (BAS), acceleration skid control (ASR) and ESP® trailer stabilisation.
In addition the electronic traction system 4ETS provides optimum traction.