Driver assist systems › Driver Alert fatigue detection assistant 183
forms measures as safely as possible to decelerate
the vehicle to a stop.
Settings
Automatic activation
The system is automatically activated when the igni-
tion is switched on.
The assist systems are only available for vehicles
with an automatic gearbox.
Functionality
Troubleshooting
When the assist system detects inactivity on the
part of the driver
Crew Protect Assist faulty
illuminates together with
Message concerning unavailability or function-
al restriction
An acoustic warning signal sounds and a message
▶
appears in the instrument cluster display.
If, after repeated warnings, the driver does not
take over the steering, the hazard warning lights
are switched on and the vehicle automatically
brakes.
▶
Seek the help of a specialist garage.
›
Driver Alert fatigue detection assistant
Functionality
After the vehicle has come to a standstill, the park-
ing brake is switched on. Depending on the equip-
ment, an emergency call can be made.
▶
Driver Alert evaluates the steering behaviour. If it de-
tects fatigue in the driver, a break is recommended.
In the display of the instrument cluster, the lights
up.
Interruption of automatic braking
By pressing the brake or accelerator pedal.
▶
By actively steering.
▶
WARNING
Functional conditions
There will be no system warning during the so-called
micro-sleep.
✓ Lane Assist is activated and the boundary lines of
Resetting the break recommendation
The break recommendation is reset in the following
cases.
the lane are recognized.
✓ ACC is enabled.
The vehicle stops and the ignition is switched off.
The vehicle stops, the seat belt is removed and the
driver's door is opened.
▶
▶
Hill descent assistant
Functionality
The vehicle stops for more than 15 minutes.
▶
The downhill assistant helps to maintain a constant
speed when driving downhill through automatic
braking.
In some situations, the system may erroneously
issue a break recommendation.
The system also works when driving in neutral or
when reverse gear is engaged.
Operating conditions
WARNING
Risk of accident!
✓ Driving speed between 60-200 km/h.
For physical reasons, the system might not function
properly on a slippery surface, e.g. ice, mud and simi-
lar.
Settings
Activation / deactivation
In Infotainment, in the menu:
Status display in the instrument cluster display
is lit up in grey – the system is activated
lights up white / green - the system intervenes
Emergency situation assist
systemEmergency Assist
Change speed
The driving speed can be changed by pressing the
brake or accelerator pedal. After releasing the pedal,
the assistant maintains the current speed.
Usage
The assist systems for emergencies detect inactivity
of the driver, which, for example, can be caused by a
sudden loss of consciousness. The system then per-
Operating conditions
✓ The engine is running.
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