Troubleshooting
Please refer to
at the start of the chapter on
page 169.
Fault message, lane keeping system not available.
An indicator lamp lights up in the instrument cluster.
A message will also appear on the instrument cluster
display.
— The camera window is dirty. Clean the windscreen
→ page 348.
— The view of the camera is impaired due to the
weather conditions, e.g. snow, or due to deter-
gent deposits or coatings. Clean the windscreen
→ page 348.
— The view of the camera is impaired by add-on
parts or stickers. Keep the area around the cam-
era window free.
— The camera has been displaced or damaged, e.g.
due to damage to the windscreen. Check whether
damage is visible → page 354.
— Fault or malfunction. Switch off and restart the
engine.
— If the problem persists, go to a qualified work-
shop.
It can take a few seconds before a system
fault is detected after the ignition is switched
on.
If the lane keeping system is not available,
Emergency Assist is also not available.
If the lane keeping system is not available,
Travel Assist is also not available.
The system is not responding as expected.
— Do not attach any objects to the steering wheel.
Travel Assist
Introduction to the topic
Travel Assist combines Adaptive Cruise Control
(ACC) with adaptive lane guidance. Within the
system limits, this enables the driver to keep
the vehicle at a preselected distance from the
vehicle in front and stay in a predefined position
within the lane.
Travel Assist uses the same sensors as the Adaptive
Cruise Control (ACC) and the lane keeping system
(Lane Assist). You should therefore read the informa-
tion on ACC and Lane Assist carefully and observe
the listed system limits and instructions.
Speed range
Travel Assist regulates at speeds between around 30
km/h (approximately 20 mph) and around 210 km/h
(approximately 130 mph). Adaptive lane guidance
can be used at speeds between 0 km/h (0 mph) and
around 250 km/h (approximately 155 mph). This
speed range may differ in certain markets.
Driving with Travel Assist
Travel Assist controls the accelerator, brake and
steering automatically. Within the system limits,
Travel Assist can decelerate the vehicle to a stand-
still behind a vehicle that is stopping. It can also
start driving again by itself.
You can override Travel Assist regulation at any time.
Does the vehicle have Travel Assist?
The vehicle is equipped with Travel Assist if the
button is available on the multifunction steering
wheel.
Displays
Fig. 153
On the instrument cluster display: active reg-
ulation displayed.
1
Adaptive lane guidance active.
2
Set distance, no vehicle detected ahead.
With some equipment levels, a display is also shown
on the Head-up Display → page 24.
Depending on the vehicle equipment, indicator
lamps on the instrument cluster display show the
status of Travel Assist:
Travel Assist active, Adaptive Cruise Control
and adaptive lane guidance active.
Travel Assist active, Adaptive Cruise Control
active, adaptive lane guidance passive.
Travel Assist
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