Mercedes-Benz E-Class Coupe Operator's Manual page 70

Driving safety systems
68
®
PRE-SAFE Brake is only available in vehicles
with DISTRONIC PLUS.
®
PRE-SAFE Brake can help you to minimize
the risk of a collision with a vehicle ahead or
reduce the effects of such a collision. If PRE-
®
SAFE Brake detects a risk of collision, you
will be warned visually and acoustically as
well as by automatic braking. PRE-SAFE
Brake cannot prevent a collision without your
intervention.
Above a speed of around 4 mph (7 km/h), this
function warns you if you are very quickly
approaching a vehicle in front. An
intermittent warning tone will then sound and
the · distance warning lamp will light up
in the instrument cluster.
X
Brake immediately in order to increase the
distance from the vehicle in front.
or
X
Take evasive action provided it is safe to do
so.
If the driver and front passenger have their
seat belt fastened, PRE-SAFE
brake the vehicle automatically at speeds
from approximately 4 mph (7 km/h) to
approximately 124 mph (200 km/h).
Due to the nature of the system, particularly
complicated driving conditions may cause
unnecessary warnings or the unnecessary
intervention of PRE-SAFE
You can prevent the intervention of the PRE-
®
SAFE Brake at any time by:
depressing the accelerator pedal further
R
activating kickdown
R
releasing the brake pedal.
R
The braking action of PRE-SAFE
ended automatically if:
you maneuver to avoid the obstacle.
R
there is no longer any danger of a rear-end
R
collision.
there is no longer an obstacle detected in
R
front of your vehicle.
®
®
Brake can also
®
Brake.
®
Brake is
With the help of the radar sensor system,
®
PRE-SAFE Brake can detect obstacles that
are in front of your vehicle for an extended
period of time.
At speeds of up to 40 mph (70 km/h), PRE-
®
SAFE Brake can also detect stationary
obstacles, for example, stopped or parked
vehicles.
If you approach an obstacle and PRE-SAFE
Brake detects a risk of a collision, the system
will alert you both visually and acoustically. If
you do not brake or take evasive action, the
system will warn you by automatically braking
the vehicle gently. If there is an increased risk
of collision, preventive passenger protection
measures (PRE-SAFE
( Y page 52). If, at speeds over 20 mph
(30 km/h), a risk of collision remains and you
do not brake, take evasive action or
significantly accelerate, automatic braking
may be performed up to the level of
emergency braking. Automatic emergency
braking is not performed until immediately
prior to an accident that can no longer be
avoided.
G
WARNING
®
PRE-SAFE Brake will initially brake your
vehicle by a partial application of the brakes
if a danger of collision is detected. There may
be a collision unless you also brake.
Automatic emergency braking cannot prevent
a collision. There is a risk of an accident.
Always apply the brakes yourself and try to
take evasive action.
G
WARNING
®
PRE-SAFE Brake cannot always clearly
identify objects and complex traffic
conditions.
In these cases, PRE-SAFE
give an unnecessary warning and then
R
brake the vehicle
not give a warning or intervene
R
There is a risk of an accident.
®
) are activated
®
Brake may:
®