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Driver assistance systems
Note
●
The lane departure warning system has
been e
xclusively developed for driving on
paved roads only.
●
If the Lane Assist system does not work as
described in this chapter, do not use it and
contact a specialised workshop.
●
If there is a fault in the system, have it
checked by a specialised workshop.
Traffic Jam Assist
Description and oper
ation
Traffic Jam Assist helps the driver keep the
car within its l
ane and t
o mo
v
e in conv
oy in
case of tr
affic congestion or sl
ow traffic.
Traffic Jam Assist is an additional function of
Lane Assist
›››
page 286 and combines Lane
Assist functions with Adaptive Cruise Control
(ACC)
›››
page 277. Therefore, it is essential
that you read these two chapters carefully
and note the limitations of the systems and
the information about them.
Operation of Traffic Jam Assist
At speeds of below 60 km/h (40 mph), Traffic
Jam Assist can maintain a (temporary) dis-
tance preset by the driver with respect to the
vehicle ahead and help stay within the lane
›››
.
T
o do this, the syst
em aut
omatically contr
ol
s
the accel
er
ator, brakes and steering, and
slows the vehicle, stopping it fully if neces-
sary, when faced with a vehicle in front that
has stopped. It automatically moves off again
when the vehicle ahead moves.
Traffic Jam Assist is designed only for use on
motorways and wide roads. Therefore, never
use it in city traffic.
Technical requirements for using Traffic
Jam Assist
●
Lane assist must be activated: button >
SETTINGS > Driver assistance > Lane
assist system
›››
page 82.
●
Adaptive lane guidance must be activated:
Infotainment button > SETTINGS > Driv-
er assistance > Lane Assist function
button, or: pressing and holding button Driv-
ing assistance
›››
page 79.
●
Adaptive Cruise Control (ACC) must be
connected and active
›››
page 280.
●
The speed must be below 60 km/h
(38 mph).
Traffic Jam Assist is not active (the Lane
Assist control light turns yellow)
●
If any of the conditions mentioned on
page 289, Technical requirements for us-
ing Traffic Jam Assist are no longer met.
●
If any of the conditions required for opera-
tion of the Lane Assist are not met
›››
page 286.
●
If any of the conditions necessary for the
adaptive cruise control (ACC) to work are no
longer fulfilled
›››
page 277.
Situations where traffic jam assist has to
be disconnected
Due to the limitations of the system, Traffic
Jam Assist must always be switched off in the
following situations:
●
When more attention is required by the
driver.
●
When driving in a very sporty style.
●
In adverse weather conditions, e.g. in case
of snow or heavy rain.
●
When driving on roads in poor condition.
●
In sections with roadworks.
●
In city journeys.
WARNING
The smart technology incorporated into
Traffic Jam Assist cannot defy the laws of
physics; it only works within the limits of the
»
289
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