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Operation
Read and observe and on page 116 first.
The system support is provided in the following manner.
▶
Alerts you about a dangerous proximity to the vehicle ahead.
▶
Warns you of an impending collision.
▶
Prepares the brakes for emergency braking prior to a detected danger.
▶
Assists with a brake action triggered by the driver.
▶
If the driver fails to respond to a detected danger, an automatic braking ac-
tion is performed.
The system can work only if the following basic conditions are met.
The system is activated.
The TCS is activated » page 110, Traction control (TCS).
The vehicle is moving forwards at a speed of more than approx. 5 km/h.
Note
The system can be impaired or may not be available, for example when driving
in “sharp ”curves or with an ESC engagement » page 110.
Distance warning (dangerous distance)
Fig. 132
Symbols in the instrument cluster: Note (dangerous
proximity)
Read and observe and on page 116 first.
The display of the distance warning is for vehicles with MAXI DOT display.
If a safe interval to the vehicle ahead falls below a minimum the display of the
instrument cluster shows the symbol
» Fig. 132.
Immediately increase the proximity if the current traffic situation allows you
to do so!
The proximity at which the warning is displayed depends on the current speed.
The warning may occur when driving between about 60 km/h and 210 km/h.
Warning and automatic braking
Fig. 133
Symbols in the instrument cluster: Warning or emer-
gency braking at low speed
Read and observe and on page 116 first.
Emergency braking at low speed
In a driving speed range of about 5 km/h to about 30 km/h the automatic brak-
ing action is not preceded by a warning. With an immediate impact hazard au-
tomatic braking is done with the breaking force increasing in stages.
With automatic braking the symbol appears
» Fig. 133 in the display.
Advance warning
If the system detects a risk of collision, the symbol
» Fig. 133 appears in the
display and you will hear an acoustic signal.
At the same time, the braking system is prepared for possible emergency brak-
ing.
The pre-warning display can occur in the following situations.
▶
If there is a risk of collision with a moving obstacle in a driving speed range of
about 30 km/h to about 210 km/h.
▶
There is a risk of a collision with a stationary moving obstacle in a vehicle
speed range of approximately 30 km/h to about 85 km/h.
With a warning the brake pedal must be pressed or the moving obstacle is to
be avoided!
Acute alert
If the driver does not react to the advance warning, the system briefly applies
the brake automatically via an active brake intervention to draw attention to
the potential danger of a collision again.
117
Assist systems
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