- Mercedes-Benz employs six short-range radar sensors for the new assistance system, which can be found in the front and rear bumpers, according to the manufacturer. The sensors monitor the zone to the side and rear of the car on both the left and the right. In so doing, they cover the area known as the "blind spot" which drivers are unable to see in the exterior mirrors.
If the system detects another vehicle in the danger zone, a red warning symbol appears in the exterior mirror glass. This symbol informs the driver that it may be dangerous to change lanes. Should the driver ignore this warning and switch on the indicators, the red symbol in the mirror will start to flash and an audible warning will also sound.
Blind Spot Assist is offered for the S and CL-Class in conjunction with other radar-based assistance systems, such as distronic plus proximity control, Brake Assist PLUS, the PRE-SAFE brake, and Parking Guidance.