Safety and security, Driving safety systems – Mercedes-Benz E-Coupe 2010 Owners Manual User Manual

Page 67

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your current speed is so close that the PRE-
SAFE

®

Brake will not be capable of slowing

the vehicle sufficiently.
When the danger of a collision still persists
and you do not brake or accelerate
significantly, the PRE-SAFE

®

Brake may

initiate full application of the brakes
automatically.

G

Warning!

The PRE-SAFE

®

Brake will only respond with

brake assistance if it has clearly detected an
object. Detection can be impeded by

R

dirty or covered sensors

R

snowfall or heavy rain

R

disturbance from other radar sources

R

strong radar reflection such as in parking
garages

The PRE-SAFE

®

Brake uses radar signals that

are not reflected well by narrow objects and
absorptive materials. For this reason the PRE-
SAFE

®

Brake will not react to persons,

animals, and approaching traffic or cross-
traffic.
The PRE-SAFE

®

Brake may not detect narrow

vehicles driving in front of you, such as
motorcycles and vehicles driving offset from
your vehicle center.

G

Warning!

Depending on the vehicle speed, the
PRE-SAFE

®

Brake brakes your vehicle with a

maximum of 13 ft/s

2

(4 m/s

2

) before a

possible hard stop. This corresponds to about
40% of the maximum deceleration ability of
your vehicle. The driver must apply the brakes
additionally in order to prevent a collision. The
self-acting hard stop will be initiated when the
imminent danger of a collision exists, e.g.
when an evasive driving maneuver cannot
avoid an accident.

To maintain the proper distance to the vehicle
in front of you and thus prevent a rear-end
collision, you must apply the brakes yourself.

X

Brake the vehicle immediately to avoid a
collision.
Under no circumstances should the driver
await the intermittent warning sound
before braking. Observe the following
warning note.
The intermittent warning sound ceases and
the distance warning lamp · goes out
when the necessary distance to the vehicle
ahead is again established.

The PRE-SAFE

®

Brake can react to stationary

obstacles such as standing or parked vehicles
at road speeds of up to approximately 40 mph
(70 km/h).

G

Warning!

If you do not receive visual or acoustic
warning signals, the PRE-SAFE

®

Brake may

R

not have recognized the collision risk

R

have been deactivated

R

be malfunctioning

Apply the brakes yourself to avoid a collision.

The PRE-SAFE

®

Brake does not always clearly

interpret complex traffic situations. If a visual
and/or acoustic warning is issued in an
uncritical driving situation, or if the vehicle
brakes lightly, you can interrupt the PRE-
SAFE

®

Brake maneuver by pressing down all

the way on the accelerator pedal, using
kickdown, or releasing the brake pedal.
The PRE-SAFE

®

Brake maneuver is

terminated immediately when

R

you avoid the obstacle by evasive steering

R

you drive less than 9 mph (15 km/h)

R

an obstacle can no longer be identified
ahead of you

R

the system no longer senses the risk of a
collision

Driving safety systems

65

Safety and security

207_AKB; 2; 35, en-US
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Version: 2.11.8.1

2009-07-17T07:10:21+02:00 - Seite 65

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