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Instruments and warning/control lamps
symbols may vary depending on the version
of the instrument panel.
Existing f
aults can al
so be check
ed manually.
T
o do so
, open the menu
Vehicle status or
Vehicle
›
››
page 68.
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. 60
On the instrument panel display: driv-
er al
ert syst
em symbol
.
Function and operation
F
atigue det
ection det
ermines the driving be-
haviour of the driv
er when st
arting a journey,
making a cal
cul
ation 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. 60. 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
but-
ton on the multi-function steering wheel
›
›
›
page 7
8
.
The message can be r
ecall
ed to the instru-
ment panel display using the multifunction
display
›››
page 69.
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
Drowsiness detection can be activated or de-
activated in the Easy Connect system with
the key > SETTINGS > Driver assis-
tance
›››
page 82. A mark indicates that the
adjustment has been activated.
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
●
In unfavourable weather conditions
●
When a sporty driving style is employed
»
71
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