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Increasing the desired distance
Reducing the desired distance
Displaying the distance from the vehicle in front
If a vehicle is detected in front, the vehicle symbol C appears on the multifunction display or in the status display B.
The gray area D shows the current distance from the vehicle in front (Fig. 3 on page 40).
Suitable for speedy driving in lines of traffic. The time headway is 1 second.
At a speed of 75 mph (120 km/h) this corresponds to around 36 yards (33 meters).
Suitable for steady driving in lines of traffic. The time headway is 1.3 seconds.
At a speed of 75 mph (120 km/h) this corresponds to around 47 yards (43 meters).
Corresponds to the general recommendation of the road traffic safety regulation (“two seconds time headway”). The time headway is 1.8 seconds. At a speed of 75 mph (120 km/h) this corresponds to around 66 yards (60 meters).
Suitable for driving on country roads.
The time headway is 2.3 seconds. At a speed of 75 mph (120 km/h) this corresponds to around 84 yards (77 meters).
Automatic braking to a standstill
If the vehicle in front stops, your vehicle will slow down and come to a stop within the control limits of the system if adaptive cruise control is active. The light indicator lights up on the instrument panel.
The vehicle is actively held stationary.
For information on the HOLD function:
Depending on the traffic flow, e.g. slow-moving traffic, stopping is initiated by a slow creeping phase, which ends with the vehicle at a standstill.
When adaptive cruise control is operating normally or when the HOLD function is active, the brake pedal may feel different and you may hear hydraulic noises.
This behavior is normal for the system. It is not a fault.
Driving off again
The vehicle can be driven off again after being stopped and speed and distance control will be resumed, depending on the operating state of the adaptive cruise control system.
Adaptive cruise control (ACC) active
Your vehicle will not drive off if the vehicle detected in front is stationary.
Adaptive cruise control (ACC) is ready
Automatic speed and distance control can only be resumed when your vehicle is moving.