The symbol is displayed when the dis‐
tance from the vehicle traveling ahead is
The distance information is active in the follow‐
▷ Active Cruise Control switched off.
▷ Display in the Head-up Display selected, refer
to page 154.
▷ Distance too short.
▷ Speed greater than approx. 40 mph/70 km/h.
The detection capacity of the system and the
automatic braking capacity are limited.
Two-wheeled vehicles for instance might not be
The system does not decelerate in the following
▷ For pedestrians or similarly slow-moving road
▷ For red traffic lights.
▷ For cross traffic.
▷ For oncoming traffic.
A vehicle driving in front of you is not detected
until it is completely within the same lane as your
If a vehicle driving ahead of you suddenly
swerves into your lane, the system may not be
able to automatically restore the selected dis‐
tance. It may not be possible to restore the se‐
lected distance in certain situations, including if
you are driving significantly faster than vehicles
driving ahead of you, for instance when rapidly
approaching a truck. When a vehicle driving
ahead of you is reliably detected, the system re‐
quests that the driver intervene by braking and
carrying out evasive maneuvers, if needed.
If the desired speed is too high for a curve, the
speed is reduced slightly, although curves can‐
not be anticipated in advance. Therefore, drive
into a curve at an appropriate speed.
The system has a limited detection range. Situa‐
tions can arise in tight curves where a vehicle
driving ahead will not be detected or will be de‐
tected very late.
Driver assistance systems
Online Edition for Part no. 01402896703 - X/18