Warning systems
– The exit warning does not react if the vehicle
is so far into a parking space that it is hidden
by the vehicles in front and behind.
adequate breaks at regular intervals. As the
driver, you are always responsible for ensur-
ing that you are fit to drive.
Driver messages about the exit warning
system
Overview of fatigue warning displays
The following displays appear in the instrument
cluster:
If or is displayed in the event of a fault,
the exit warning system functions are unavailable
or restricted.
Display
Description
The system has detected a low level
of fatigue.
A driver message indicating the cause and possi-
ble remedy may appear for some of the displays.
To view further information, open the notifica-
tion centre on the centre display. The weather
conditions may not be good enough, or a sensor
may be obstructed. Clean the area around the
sensors at the rear corners of the vehicle
The system has detected a high level
of fatigue. In addition, a tone will
sound.
System limits of the fatigue warning
ðpage 133, Fig. 81. Try switching on the system
later or after the vehicle is next switched on.
The system may misinterpret the driving behav-
iour in certain driving situations, such as the fol-
lowing:
If a fault persists, drive to a qualified workshop
soon and have it rectified.
– You are driving at a speed below approx.
60 km/h.
Fatigue warning
– You are driving at a speed above approx.
130 km/h.
Introduction
– You are driving on winding roads.
– You are driving on a surface which is in poor
condition.
Within the system limits, the fatigue warning in-
forms the driver whether they need to take a
break.
– You are driving through roadworks.
– You are driving in unfavourable weather condi-
tions.
Once the vehicle is moving, the fatigue warning
analyses the driving behaviour in order to esti-
mate whether the driver is fatigued. The result is
compared continuously with the current driving
behaviour.
– You have a dynamic driving style.
– You are distracted.
– You are towing a heavy or long trailer.
– You have activated lane guidance.
– You are falling asleep or into a microsleep.
If the comparison suggests that the driver is fa-
tigued, the system will recommend a break via a
display in the instrument cluster at speeds of
65 km/h and above. If severe fatigue is detected,
a tone will also sound.
In certain situations, the system may misinter-
pret driving manoeuvres and inappropriately rec-
ommend a break.
Resetting the system
WARNING
The system is automatically reset in the follow-
ing situations:
– Please note the safety precautions and sys-
tem limits of the supporting systems, sen-
sors and cameras ðpage 130 to
– If you switch off the vehicle.
– You unfasten the driver's seat belt and open the
driver's door.
ðpage 132.
– Never drive when you are tired – risk of acci-
dent! On long journeys, make sure to take
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