— When dazzled, e.g. by oncoming tra
c or
sunlight.
— High speeds.
— Dirty camera.
— Trac signs that are located outside the
area covered by the camera window.
— Partially or fully hidden trac signs,
e.g. by trees, snow, dirt or other vehicles.
— Trac signs that do not correspond to
the standard design.
— Damaged or bent trac signs.
— Variable trac signs on gantries
(changeable trac sign display using
LEDs or other light sources).
— Out-of-date map material of the Info-
tainment system.
— Vehicles that have trac sign stickers,
e.g. speed restrictions on trucks.
The system partly uses the camera
behind the windscreen. You can find
further information in the section on sen-
sors → page 165, → page 165, → page 166,
→ page 167.
The system also uses navigation data
even if the vehicle does not have
a navigation system. Keep the navigation
data up-to-date → page 253. If you have
any questions, please contact a suitably
qualified workshop.
Driving with the speed warning
func
tion
Please refer to at the start of the
chapt
er on page 39.
Function conditions
The speed warning function warns at
speeds above around 20 km/h (around
12 mph).
Switching on and o
Depending on the country, the speed warn-
ing is always switched on when the engine
is started. If required, you can switch o the
speed warning manually in the Infotain-
ment system.
1. Open the Assist systems menu.
2. Switch the speed warning on or o in
the c
orresponding submenu.
Activating and deactivating the acous-
tic warning
In the Infotainment system:
1. Open the Assist systems menu.
2. Tap the Speed warning function but-
ton.
3. Activate or deactivate the acoustic
warning in the corresponding option.
The acoustic warning is always activa-
ted when the engine is started.
Adjusting the warning threshold
You can adjust the warning thresholds of
the speed warning function manually.
In the Infotainment system:
1. Open the Assist systems menu.
2. Tap the Speed warning function but-
ton.
3. To select the level for the warning
thresholds, tap
in the W
arning
threshold menu option.
When the engine is started, the warn-
ing thresholds of the speed warning
are always reset to the default value.
Activating and deactivating the change
tone
The change tone informs the driver acous-
tically about a change in the speed limits.
You can switch o the change tone man-
ually if required.
In the Infotainment system:
1. Open the Assist systems menu.
2. Tap the Speed warning function but-
ton.
3. Activate or deactivate the change tone
in the corresponding option.
Hiding fault messages via the multi-
function steering wheel
1. Press the
button on the multifunc-
tion steering wheel.
T
railer mode
In vehicles with a factory-fitted towing
bracket and a trailer with an electrical con-
Advanced T
rac Sign Display
41
2KF012720AE