Functional Limitations Of Distance Control, Detailed Information - GF30.30-P-0024-01A

Model All (CAR) 

Overview 

This document contains information on:

• General 
• Function 
  • System features impaired 
  • Obstacles and stationary vehicles 
  • Curves, curved entrances and exits 
  • Vehicles moving across in front of one's own vehicle 
  • Lane changes by other vehicles 
  • Offset driving style 
  • Narrow vehicles 

General 

Distance control regulates the distance from a preceding vehicle as specified by the driver. In this connection, functional restrictions of the distance control can occur due to different factors.

Function 

System features impaired 

The distance control can, for example, be impaired or may not function as expected in the following situations due to the system features:

• Radar sensor dirty or covered
• Vehicles with Driving Assistance Package: Windshield dirty, fogged up, damaged in area of multifunction camera or multifunction camera covered
• Snow, rain, fog, heavy spray, glare, direct solar radiation or significantly changing light conditions
• Wheels lose grip on smooth or slippery roads due to braking or accelerating, vehicle skids.
• Multi-level car park or parking garage
• Roadway or street with steep downhill or uphill gradient

The system can not respond or only in a limited manner in the following cases:

Obstacles and stationary vehicles 

The distance control can not react to obstacles or stationary vehicles that are not detected by the sensor system. The system may not react sufficiently or at all, for example if the vehicle in front turns and there is a fixed obstacle or a stationary vehicle in front

Sample illustration of obstacles and stationary vehicles 

Courtesy of MERCEDES-BENZ USA

Curves, curved entrances and exits 

The distance control can only detect vehicles in curves to a limited extent. One's own vehicle can then brake unexpectedly or late.

Sample illustration of curves, curve entrances and exits 

Courtesy of MERCEDES-BENZ USA

Vehicles moving across in front of one's own vehicle 

The distance control can detect crossing vehicles by mistake. If distance control is activated, the vehicle can drive off unintentionally (such as at an intersection with cross traffic).

Sample illustration of crossing vehicles 

Courtesy of MERCEDES-BENZ USA

Lane changes by other vehicles 

Vehicles that swing into the regulated distance can cause unexpected braking by the distance control.

Sample illustration of lane change by other vehicles 

Courtesy of MERCEDES-BENZ USA

Offset driving style 

The distance control may possibly not detect vehicles driving offset to the side. The distance to the vehicle in front becomes too small.

Sample illustration of offset driving style 

Courtesy of MERCEDES-BENZ USA

Narrow vehicles 

The distance control does not detect the vehicle in front at the edge of the road due to its narrow width. The distance to the vehicle in front becomes too small.

Sample illustration of narrow vehicles 

Courtesy of MERCEDES-BENZ USA