radar sensors checked at a qualified specialist
workshop. This also applies to collisions at low
speeds where no damage to the front of the
vehicle is visible.
Following damage to the windscreen, 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 250).
If the Active Brake Assist with cross-traffic
function is deactivated, the
æ
symbol
appears in the multifunction display.
If you have activated DSR (
Y
page 227), the
Active Brake Assist with cross-traffic function is
deactivated.
This function issues a warning:
R
at a speed of approximately 30 km/h or
higher, the distance maintained to the vehicle
travelling in front is insufficient for several
seconds.
The
·
distance warning lamp then lights
up in the instrument cluster.
R
at a speed of approximately 7 km/h or more,
you rapidly approach a vehicle in front or a
pedestrian
An intermittent warning tone will then sound
and the
·
distance warning lamp will light
up on the instrument 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
and
R
the vehicle speed is between approximately
7 km/h and 200 km/h
Up to a speed of approximately 70 km/h, Active
Brake Assist with cross-traffic function may
react to:
R
stationary objects in the path of your vehicle,
such as stopped or parked vehicles
R
pedestrians in the path of your vehicle
i
If an increased danger of collision exists,
preventative passenger protection measures
(PRE-SAFE
®
) are triggered (
Y
page 56).
If the risk of collision remains and you do not
brake, take evasive action or accelerate quickly,
the vehicle may perform automatic braking up to
the point of a full brake application. An auto-
matic full brake application is not performed
until immediately prior to an imminent accident.
If you apply the brake yourself in a critical sit-
uation or during autonomous braking, braking
assistance is provided according to the situa-
tion. If necessary, this increases the brake pres-
sure 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 under30 km/h: if
you depress the brake pedal, Active Brake
Assist with cross-traffic function is activated.
Braking assistance from Active Brake Assist
with cross-traffic function is carried out at the
last possible moment.
When driving at a speed above30 km/h: if
you depress the brake pedal sharply, Active
Brake Assist with cross-traffic function auto-
matically increases the brake pressure 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 7 km/h and 250 km/h.
Driving safety systems
77
Safety
Z