The air conditioning systems used by the R-Class is Thermotronic or multi-zone system that allows the temperature on left, right and rear can be set automatically or manually. This system works accordance with the solar sensor that can detect the direction and heat of the sunlight. For the headlights, Mercedes Benz R-Class uses Bi-Xenon light, the best of lighting system at present.
The Bi-Xenon light has three functions: Active Light System, when the speed is between 40-70 km / hour, and when the car will turn then the headlights will follow the path so that the lighting will achieve the maximum lighting. Likewise when the car is up or down, the headlights will adjust automatically. There's also the Cornering Light which functions to provide the further warning to the vehicles or people around the car if the car wants to spin (not the sign or the turning light). The other safety systems are ABS, ESP, BAS, and alarms to prevent from the theft. For the R500 series, there is another feature that is keyless-Go, a feature that allows the driver to start the engine without removing the key from the bag.