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combination threatens to jackknife as a result of
the trailer/semitrailer running on.
Such driving situations can occur in the following
situations, for example:
when driving on a bend in overrun mode
R
when driving on a bend on a slippery roadway
R
when the continuous brake is active
R
To prevent critical situations, Trailer Stability
Assist stabilises the tractor/trailer combination
through brief brake applications at the trailer/
semitrailer.
A brake application by Trailer Stability Assist is
shown to the driver by a flashing ß symbol in
the instrument cluster.
Trailer Stability Assist is deactivated automati‐
cally if the temperature of the trailer brake is too
high.
If the system is deactivated automatically, the
indicator lamp in the ß button flashes and a
corresponding event window is shown in the
instrument cluster.
Switching TSA on/off
TSA button on the electric parking brake lever
(example)
To switch on/off: press the ß button.
#
The function is switched on when the indica‐
tor lamp in the ß button is lit.
Active Drive Assist
Notes on Active Drive Assist
Active Drive Assist is only an aid. You are respon‐
sible for the distance to the vehicle in front, for
vehicle speed, steering and for braking in good
time.
You should always adapt your driving style to suit
prevailing road and weather conditions and drive
carefully.
For vehicles operated in Ukraine: also observe
the information on "Radar sensor system radio
type approval" (
page 12).
/
Active Drive Assist (ADA) is designed to support
drivers of long-distance vehicles with their longi‐
tudinal and lateral distance control duties.
For this purpose, ADA has comfort functions and
includes the following systems:
Distance control assistant
R
Lane Keeping (LK)
R
Lane Departure Protection (LDP)
R
%
It is only possible to use Active Drive Assist
when the distance control assistant is activa‐
ted (
page 238).
/
Longitudinal distance control function
The longitudinal distance control function of
Active Drive Assist is taken over by the distance
control assistant.
Read the notes on the distance control assistant
(
/
page 238).
Lateral distance control function
For the Active Drive Assist lateral distance con‐
trol function, the standard Lane Keeping Assist
has been supplemented with several functions.
For one, it includes a comfort function which
assists the driver in keeping the vehicle between
the lane markings (Lane Keeping).
The second function warns the driver acoustically
in the event the lane is left unintentionally and
guides the vehicle back into the lane with a steer‐
ing intervention (Lane Departure Protection).
System limits
Active Drive Assist has been developed for jour‐
neys on motorways and high-speed major roads.
When driving through roadworks, on country
roads or in urban traffic, Active Drive Assist may
be limited or unavailable. It is recommended to
deactivate the system in these situations.
& WARNING Risk of accident despite
Active Drive Assist
Active Drive Assist cannot always clearly
detect lane markings.
Driving mode 257
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