Systems for braking and taking evasive action
Introduction
Switching the rear turn assist on/off
The rear turn assist monitors the blind spot and
the traffic behind your vehicle in the neighbour-
ing lanes and helps you when turning off. If the
system detects an approaching object which it
judges to be critical, the warning signal 1 lights
up on the exterior mirror on the corresponding
side of the vehicle.
You can switch the rear turn assist on/off in the
Driver assist menu ðpage 134.
System limits
The rear turn assist is active at speeds of up to
approx. 60 km/h when a turn signal is on. The
system is not available at very low speeds.
The system uses the data from the radar sensors
at the corners of the vehicle ðpage 133, Fig. 80,
ðpage 133, Fig. 81. The sensors are designed
for normal lane widths and monitor the lanes im-
mediately to the left and right of your vehicle. In
certain situations it is possible that the system
may react to vehicles in your own lane or two
lanes away, or to objects at the edge of the lane.
The warning signal then lights up even though
there are no vehicles in the critical area. Such sit-
uations may include:
Driving situations
– Your vehicle is being overtaken by another vehi-
cle. The faster this vehicle approaches from be-
hind, the earlier the warning signal will appear
on the exterior mirror.
– There are vehicles travelling at a similar speed
in the next lane. The warning signal will appear
on the exterior mirror by the time the detected
object is in your blind spot.
– You are overtaking another vehicle slowly. If the
speed differential between the two vehicles is
not greater than approx. 15 km/h, the warning
signal will appear on the exterior mirror.
– When driving at the edge of your own lane
– When driving in narrow lanes
– When driving through a corner
Information mode
– If there are high barriers next to the lane
– When driving through roadworks
When you switch a turn signal on, the system in-
forms you of objects which it judges to be critical
by activating the warning signal 1 on the corre-
sponding exterior mirror.
Information on the rear turn assist
– The warning signals on the exterior mirrors
may not be properly visible if tinted foil is af-
fixed to the side windows on the driver's or pas-
senger's side.
The intensity of the warning signal in this infor-
mation mode is kept relatively low, so that it
does not distract you while you are looking at the
road in front.
– The systems are not available in towing mode.
If the towing bracket is not factory-fitted the
systems may not be switched off automatically.
The functions must not be used when towing a
trailer.
Warning mode
As soon as you activate a turn signal, the system
warns you of objects which it judges to be critical
and with which the collision risk is increasing by
flashing the warning signal on the corresponding
exterior mirror. A warning tone will sound if the
situation becomes more critical. The system may
also jolt the brakes as an additional warning.
– The area covered by the sensors ðpage 136,
Fig. 85 is an example and does not represent
the range of the sensors to scale.
WARNING
– Please note the safety precautions and sys-
tem limits of the supporting systems, sen-
sors and cameras ðpage 130 to
Instrument cluster display
In addition to the warning signal on the exterior
mirror, a graphic for the rear turn assist (infor-
mation and warning level) is shown in the instru-
ment cluster. The symbol is shown in grey at the
information level and red at the warning level.
ðpage 132.
– The warning signal may not light up in time
or may not light up at all if other vehicles
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