A ss is tanc e s y s tem s
What can the braking guard do?
When detected in t ime, the system can assess
dangerous situations where an object ahead
brakes suddenly or if your own vehicle is traveling
at a high speed and approaching an object that is
moving more slowly. The braking guard does not
react if it cannot detect the situation.
The system advises you of various dangerous sit-
uations :
- The
distance warning occurs if you d rive t oo
closely to the object ahead for a long period of
time. If the object ahead brakes strongly, you
would not be able to avoid a collision . The .
indicator light appears as an indication for this.
- The
approach warning occurs when an object
ahead is traveling more slow ly or brakes
strongly. When th is warning occurs, it may only
be possible to avoid a collision by swerv ing or
braking strongly . The danger is indicated by the
• ind icator light
¢ fig. 98 . An aud io signal w ill
also sound .
If you do not react early enough or at all to a dan-
gerous situation, the braking guard suppo rts you
with a brak ing intervention .
- If a collision is imminent, the system will first
provide an
acute warning by braking sharply.
- If you do not react to the acute warning, the
braking guard can increase the braking force
within the limits of the system
ll . This reduces
the vehicle speed in the event of a collision .
- The system can init iate comp lete deceleration
shortly before a collision
ll _ Full deceleration at
high speeds occurs only in vehicles with adap-
tive cru ise control and s ide ass ist (pre sense
plus).
- If the braking gua rd determines that you are
not brak ing strongly enough whe n there is an
im pending co llision, it can increase the bra king
force .
- The pre sense functions also engage whe n
t here is an impend ing collision ¢
page 94.
l ) This is not available in some count ries.
92
Which fun ction s can be controlled?
You can switc h the braking guard and the d is-
tance/approach warning on or
off in the Infotain -
ment system ¢
page 93, Settings in the Info -
tainment system .
A WARNING
Lack of attent ion can cause collisions, other
accidents and ser ious personal injuries . The
braking guard is an assist system and cannot
prevent a collis ion by itself . The dr iver must
a lways intervene. The d river is always respon-
sib le for braking at the correct t ime.
- Always pay close attention to traffic, even
when the braking guard is sw itched on. Be
ready to intervene and be ready to take
com plete co nt rol whenever necessa ry. Al-
ways keep the sa fe and legal distance be -
tween your vehicle and ve hicles up ahead .
- Braki ng g uard wo rks withi n limits and will
not respond outside the system limits, for
examp le when approaching a stopped vehi -
cle or stationary obstacle (end of a traffic
jam or vehicle that has broken down in traf -
fic).
- Always remember that the radar sensor for
the brak ing guard works only within defined
detection and range limits that may prevent
the proper detection of other vehicles .
- The radar sensor's function and range can
be reduced by rain, snow and heavy spray.
Moving veh icles up ahead may not be
promptly detected or may not be detected
at al l.
- Reflective surfaces including crash ba rriers
or tunne l entra nces may impair the function
of the rada r senso r.
(D Tips
- You can cancel the braking with increas ing
force that is initiated by the system by brak-
ing yourse lf, by acce le rating not iceably or
by swerv ing.
- Keep in mind that braking gua rd can brake
unexpectedly. Always secure a ny cargo or
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