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Operation
symbols may vary depending on the version
of the instrument panel.
Existing f
aults can al
so be checked manually.
To do so, open the menu Vehicle status or
Vehicle
›››
page 73.
Priority 1 warning (red)
The symbol lights up or flashes (in part ac-
companied by audible warnings). Stop
driving! Danger! Check the fault and elimi-
nate the cause. If necessary, seek professio-
nal assistance.
Priority 2 warning (yellow)
The symbol lights up or flashes (in part ac-
companied by audible warnings). Operating
faults or the lack of operating fluids can
cause damage to the vehicle or a fault.
Check the faulty function as soon as possible.
If necessary, seek professional assistance.
Information message
It provides information about processes in the
vehicle.
Driver alert system (break recom-
mendation)*
Fig. 67
On the instrument panel display: driver
al
ert syst
em symbol.
The Fatigue detection informs the driver when
their driving behaviour sho
ws signs of f
atigue.
Function and operation
Fatigue detection determines the driving be-
haviour of the driver when starting a journey,
making a calculation of tiredness. This is con-
stantly compared with the current driving be-
haviour. If the system detects that the driver is
tired, an audible warning is given with a
sound and an optic warning is shown with a
symbol and complementary message on the
instrument panel display
›››
Fig. 67. The mes-
sage on the instrument panel display is
shown for approximately 5 seconds, and de-
pending on the case, is repeated. The system
stores the last message displayed.
The message on the instrument panel display
can be switched off by pressing the
button on the windscreen wiper lever or the
button on the multi function steering wheel
›››
page 82.
The message can be recalled to the instru-
ment panel display using the multifunction
display
›››
page 74.
Conditions of operation
Driving behaviour is only calculated on
speeds above about 65 km/h (40 mph) up to
around 200 km/h (125 mph).
Switching on and off
Fatigue detection can be activated or deacti-
vated in the infotainment system using the
function button > Driver assistance > Fa-
tigue detector
›››
page 90. A mark indi-
cates that the adjustment has been activa-
ted.
System limitations
The Fatigue detection has certain limitations
inherent to the system. The following condi-
tions can limit the Fatigue detection or pre-
vent it from functioning.
●
At speeds below 65 km/h (40 mph)
●
At speeds above 200 km/h (125 mph)
●
When cornering
●
On roads in poor condition
76
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