— Fault or malfunction. Deactivate and reac-
tivate the vehicle’s drive system.
— If the problem persists, go to a qualified
workshop.
The control system is interrupted unexpect-
edly.
— You have activated the turn signal.
Semi-automatic vehicle
control in a medical
emergency (Emergency
Assist)
Emergency Assist can detect a lack of
activity on the part of the driver and
keep the vehicle in the lane automatical-
ly, or brake the vehicle to a standstill if
required. The system can therefore ac-
tively contribute to preventing or reduc-
ing the consequences of an accident.
Emergency Assist uses the same sensors as
the Adaptive Cruise Control (ACC) and the
lane keeping system (Lane Assist). Please
read the information on ACC → page 151 and
Lane Assist → page 165 carefully and observe
the listed system limits and instructions.
Driver intervention prompt
If there is no driver activity, Emergency Assist
prompts the driver to take control of the ve-
hicle by acoustic warnings and by a braking
jolt. A message is also displayed on the in-
strument cluster display and the volume of
the Infotainment system is reduced.
Depending on equipment, the driver's belt is
also tensioned simultaneously.
System intervention
If the driver does not respond, the system
can brake the vehicle and keep it in lane. The
following indicator lamp lights up in the in-
strument cluster display:
System intervenes.
You can override intervention at any time by
steering, accelerating strongly or braking.
Other road users will be warned as follows
when Emergency Assist is actively perform-
ing control interventions:
— The hazard warning lights will be switched
on after a short time.
— The vehicle horn will sound (depending on
speed).
The following will happen as soon as the ve-
hicle is stationary:
— The electronic parking brake is switched
on.
— The doors will be unlocked.
— The interior lighting will be switched on.
— An emergency call (eCall) will be made, de-
pending on the vehicle equipment.
Switching on and off
You can switch Emergency Assist on and off
in the assist systems menu of the Infotain-
ment system.
When switched on, Emergency Assist is ac-
tive only if the following prerequisites are
met:
— Travel Assist or Lane Assist is switched on.
— The system has detected a road lane
marking on both the right and left sides of
the vehicle.
If there is a system fault, Emergency
Assist can deactivate itself automati-
cally.
If the lane keeping system (Lane As-
sist) is not available, Emergency Assist
is also not available.
Semi-automatic vehicle control in a medical emergency
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