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speeds where there is no visible damage to the
front of the vehicle.
Following damage to the windshield, have the
configuration and operation of the camera sys-
tem checked at a qualified specialist workshop.
Function
X
To activate or deactivate: activate or deac-
tivate Active Brake Assist with cross-traffic
function using the on-board computer
(Y page 220).
If Active Brake Assist with cross-traffic func-
tion is deactivated, the æ symbol appears
on the multifunction display.
Starting at a speed of around 4 mph (7 km/h),
this function warns you if you are rapidly
approaching a vehicle in front. An intermittent
warning tone will then sound and the · dis-
tance warning lamp will light up in the instru-
ment cluster.
X
Brake immediately to defuse the situation.
or
X
Take evasive action provided it is safe to do
so.
Active Brake Assist with cross-traffic function
can also brake the vehicle automatically under
the following conditions:
R
the driver and front passenger have their seat
belts fastened
R
the vehicle speed is between approximately
4 mph (7 km/h) and 124 mph (200 km/h)
Up to a speed of approximately 44 mph
(70 km/h), Active Brake Assist with cross-traffic
function may react to:
R
stationary objects in the path of your vehicle,
e.g. stopped or parked vehicles
R
pedestrians in the path of your vehicle
i
If there is an increased risk of a collision,
preventive passenger protection measures
(PRE-SAFE
®
) are triggered (Y page 57).
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking, up
to the point of full brake application. Automatic
emergency braking is not performed until imme-
diately prior to an imminent accident.
If you apply the brake yourself in a critical sit-
uation or during autonomous braking, situation-
dependent braking assistance is implemented.
If necessary, this increases the brake pressure
up to full brake application.
To avoid a collision, Active Brake Assist with
cross-traffic function calculates the brake force
necessary if:
R
you approach an obstacle, and
R
Active Brake Assist with cross-traffic function
has detected a risk of a collision
When driving at a speed under 20 mph
(30 km/h): if you depress the brake pedal,
Active Brake Assist with cross-traffic function is
activated. The increase in brake pressure from
Active Brake Assist with cross-traffic function is
carried out at the last possible moment.
When driving at a speed above 20 mph
(30 km/h): if you depress the brake pedal
sharply, Active Brake Assist with cross-traffic
function automatically increases the brake pres-
sure to a degree suited to the traffic situation.
Active Brake Assist with cross-traffic function
provides braking assistance in hazardous situa-
tions with vehicles in front within a speed range
between 4 mph (7 km/h) and 155 mph
(250 km/h).
Up to a speed of approximately 44 mph
(70 km/h) the Active Brake Assist with cross-
traffic function assists you with braking in haz-
ardous situations with:
R
stationary obstacles in the path of the vehicle,
e.g. stopped or parked vehicles
R
stationary pedestrians in the path of the vehi-
cle
R
obstacles crossing your path that move in the
detection range of the sensors and are detec-
ted
X
Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
You can prevent the intervention of Active Brake
Assist with cross-traffic function at any time by:
R
depressing the accelerator pedal further.
R
activating kickdown.
R
releasing the brake pedal
The braking application of Active Brake Assist
with cross-traffic function is ended automati-
cally if:
R
you maneuver to avoid the obstacle.
R
there is no longer a risk of collision.
R
an obstacle is no longer detected in front of
your vehicle.
74
Driving safety systems
Safety
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