Operating Travel Assist
Please refer to at the start of the chap-
Fig. 112 Lefthand side of the multifunction
steering wheel.
Switching on and starting control
— Press the
button on the multifunction
steering wheel.
The green indicator lamp lights up in the
instrument cluster display. A message is also
displayed. Travel Assist maintains the current
speed and the preset distance from the vehi-
cle in front At the same time, the vehicle is
also kept in lane by steering movements if
road lane markings are detected.
Cancelling control
— Briefly press the
button or press the
brake pedal.
The set distance remains stored.
Making other settings
The other operating functions of Travel Assist
correspond to operation of ACC → page 155.
Troubleshooting
Please refer to at the start of the chap-
Travel Assist is not available or does
not function as expected.
The indicator lamp lights up yellow. A mes-
sage will also appear on the instrument clus-
ter display.
— There is a fault in the sensor system.
Check the causes and remedies described
in the information on ACC → page 156 or
— Fault or malfunction. Deactivate and reac-
tivate the vehicle’s drive system.
— The system limits have been exceeded.
— If the problem persists, go to a qualified
workshop.
Take over steering.
The warning lamp lights up white and a mes-
sage is displayed in the instrument cluster
display.
— You have released the steering wheel for
a few seconds. Take hold of the steering
wheel and take over vehicle control.
Take over steering.
The warning lamp lights up red and a mes-
sage is displayed in the instrument cluster
display. An acoustic warning is issued or the
steering wheel vibrates, depending on the
driving situation.
— You have let go of the steering wheel for
an extended time or the system limits
have been reached. Take hold of the steer-
ing wheel immediately and take over vehi-
cle control.
Travel Assist switches off automatically.
—
Vehicles without Emergency Assist:
You
have released the steering wheel for an
extended period of time.
170
Driver assist systems