Operation
Within its limitations, the system also displays
additional signals, such as time-specific pro-
hibitions, signs for vehicles towing trailers
››› page 330 or limitations that only apply in
the event of rain. Even on journeys without
signs, the system may display any applicable
speed limits.
interior rear-view mirror records the traffic
signs in front of the vehicle. After checking
and evaluating the information from the cam-
era, the navigation system and the current
vehicle data, up to three valid traffic signs are
displayed››› Fig. 127 B in conjunction with
their corresponding additional signs.
Message
Cause and solution
Speed warning
currently un-
available.
The speed warning function of
the traffic sign detection sys-
tem is faulty.
Have the system checked by a
specialised workshop.
Detection of
traffic
signs: Clean
the wind-
screen!
The windscreen is dirty in the
camera area.
The traffic sign detection system does not
work in all countries. Keep this in mind when
travelling abroad.
First: The sign that is currently valid for the
driver is shown in the left side of the
Clean the windscreen.
screen For example, a maximum speed
limit of 130km/h(100mph)››› Fig. 127 A.
Indication on the display
Detection of
traffic
signs: Limi-
ted at the
moment
No data transfer by the navi-
gation system.
Second: A sign valid only in certain circum-
stances, e.g. 100km/h(60mph) is shown
second, together with the additional rain
sign.
Additional sign: If the windscreen wiper is
working while you are driving, the signal
with the additional rain sign will be
shown first, on the left, as it is the one
that is applicable at the time.
In Germany, on motorways and vehicle
roads, besides speed limits and overtaking
provisions the system also displays the end of
prohibition signs. The valid speed limit at the
time in other countries is always shown.
Check whether the navigation
system has current maps.
OR: the vehicle is currently in a
region that is not included in
the navigation system's map.
The traffic signs detected by the system are
displayed on the dash panel display
No data
available
The traffic sign detection sys-
tem does not work in the cur-
rent country.
››› Fig. 127 and, depending on the navigation
system fitted in the vehicle, on the infotain-
Third: A sign valid only with restrictions, e.g.
No overtaking at certain times, will be
displayed third››› Fig. 127 C.
ment system as well›››
page 36.
Activating and deactivating traffic sign
display on the instrument panel
Traffic sign detection system messages
The permanent display of traffic signs on the
instrument panel can be activated or deacti-
vated in the infotainment system using the
> SETTINGS> Driver Assistance
function buttons.
Message
Cause and solution
Speed warning
If the system detects that the permitted
speed is exceeded, it may warn the driver
with a “gong” and visually with a message on
the dash panel display.
There are no
traffic signs
available
The system is starting up.
OR: the camera has not rec-
ognised any obligation or pro-
hibition signs.
Display of traffic signs
Error: Detec-
tion of traf-
fic signs
There is a fault in the system.
Have the system checked by a
specialised workshop.
The speed warning can be adjusted or deac-
tivated completely in the infotainment system
using the > SETTINGS > Driver
When the traffic sign detection system is con-
nected, a camera located on the base of the
116
English 
