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Troubleshooting
Crew Protect Assist faulty
illuminates together with
Message concerning unavailability or function-
al restriction
›
Seek the help of a specialist garage.
Driver Alert fatigue detection assistant
Functionality
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
up.
WARNING
There will be no system warning during the so-called
micro-sleep.
Resetting the break recommendation
The break recommendation is reset in the following
cases.
The vehicle stops and the ignition is switched off.
▶
The vehicle stops, the seat belt is removed and the
▶
driver's door is opened.
The vehicle stops for more than 15 minutes.
▶
In some situations, the system may erroneously
issue a break recommendation.
Operating conditions
✓ Driving speed between 60-200 km/h.
Settings
Activation/deactivation
In Infotainment, in the following menu.
Or:
Emergency situation assist
systemEmergency Assist
Usage
The assistant for emergencies detects inactivity of
the driver, which, for example, can be caused by a
sudden loss of consciousness. The system then per-
forms measures as safely as possible to decelerate
the vehicle to a stop.
Driver assist systems ›
Driver Alert fatigue detection assistant
The assist systems are only available for vehicles
with an automatic gearbox.
Functionality
When the assist system detects inactivity on the
part of the driver
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.
After the vehicle has come to a standstill, the park-
▶
ing brake is switched on.
lights
Interruption of automatic braking
By pressing the brake or accelerator pedal.
▶
By actively steering.
▶
Operating conditions
✓ Lane Assist is activated and the boundary lines of
the traffic lane are recognised.
✓ ACC is enabled.
Hill descent assistant
Functionality
The hill descent assist system helps to keep a con-
stant speed when driving downhill by undertaking
automatic braking interventions.
The system also works when driving in neutral or
when the reverse gear is engaged.
WARNING
Risk of an accident!
The assist system cannot properly fulfil its function
on slushy soil due to physical reasons (e.g. ice or
mud).
Status display in the instrument cluster display
lit up in grey - the system is activated
lit up in white - the system intervenes
Alter the speed
The driving speed can be changed by pressing the
brake or accelerator pedal. After releasing the pedal,
the assist system maintains the current speed.
Operating conditions
✓ The engine is running.
✓ Offroad mode is enabled.
✓ The gradient is at least 10%.
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