Systems for braking and taking evasive action
– Seat belt jolt
Systems for braking and
taking evasive action
– Brake jolt
– Hazard warning lights are activated
– Protective measures of the proactive occupant
protection system are triggered
– The brakes are applied and the vehicle is
brought to a standstill
Emergency assist
Introduction
The emergency assist can detect if the driver is
inactive within certain system limits. In such ca-
ses, the system is activated automatically. The
driver is prompted to take control of the vehicle
by visual, acoustic and haptic measures. If the
driver does not take control, the system takes
over operation of the vehicle within the limits im-
posed by the system to bring it to a standstill in
the same lane.
– The vehicle’s horn sounds repeatedly
As soon as the vehicle is stationary, the parking
brake is applied, transmission position P is selec-
ted, the doors are unlocked and the interior
lights are switched on. A few seconds after the
1)
vehicle has stopped, an emergency call will be
placed if necessary.
Only some of the measures may be activated de-
pending on the hazard situation detected and the
vehicle equipment. Some measures may be modi-
fied or skipped.
WARNING
– Please note the safety precautions and sys-
tem limits of the supporting systems, sen-
sors and cameras ðpage 130 to
Availability of the emergency assist
ðpage 132.
The emergency assist is available automatically,
irrespective of speed, when it is switched on and
lane guidance is active. When lane guidance is
not active, the emergency assist is only available
at speeds above approx. 65 km/h.
– The emergency assist is a system which is
designed to help (in an emergency only) by
taking control of the vehicle and bringing it
to a stop. If the system is activated at an un-
desirable time, you can cancel the emergen-
cy assist.
If any of the requirements for the adaptive cruise
control, lane guidance or lane departure warning
are no longer met, the functionality of the sys-
tem may be restricted.
– The emergency assist is not designed to
avoid collisions with physical lane delinea-
tors, such as concrete barriers.
After the emergency assist is activated, you must
wait for a short period of time before it can be ac-
tivated again.
Measures and availability of the emergency
assist
Measures implemented by the emergency
assist
Display overview
If the system detects that the driver is inactive, it
issues a warning in the form of the
and a corresponding driver message.
The vehicle can intervene within the limits of the
system. The following measures may be imple-
mented in stages:
symbol
The
symbol shown by the emergency assist
– Visual and acoustic warnings
indicates that the distance regulation is active
and the system is intervening in the braking.
– Support with controlling the vehicle through
distance regulation and lane guidance
– Gradual reduction in vehicle speed
– Infotainment volume reduction
The
symbol shown by the emergency assist
indicates that the distance regulation and lane
1)
This function is not available on all models or in all coun-
tries.
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English 
