Driver information
light information display may change
abruptly.
Function currently unavailable. See owner's
manual
– The actual traffic signs on your route always
take precedence over the information on
the display. As the driver you are always re-
sponsible for adhering to the locally appli-
cable laws and regulations.
The system is currently out of operation. Check
whether any of the following items apply and rec-
tify the cause as necessary:
– The traffic light information is deactivated.
– Data transmission is deactivated.
– The vehicle does not have traffic sign recogni-
tion.
– The measurement units and language set-
tings shown in the display are based on the
MMI system settings ðpage 306.
– There is no valid licence.
– No traffic light data are available at the current
location.
Operation
Applies to: vehicles with traffic light information
Switching the traffic light information on/off
Fatigue warning
You can switch the traffic light information
on/off in the Driver assist menu ðpage 175.
Description
Applies to: vehicles with fatigue warning
Calling up the traffic light information
Within the system limits, the fatigue warning in-
forms the driver whether they need to take a
break.
The vehicle has a driver assist display which may
or may not show the surroundings depending on
the vehicle’s equipment:
Once the vehicle is moving, the fatigue warning
analyses the driving behaviour in order to esti-
mate whether the driver is fatigued. The result is
compared continuously with the current driving
behaviour.
►
Without surroundings shown: On the instru-
ment cluster, select the vehicle functions tab >
Traffic signs.
With surroundings shown: On the instrument
►
cluster, select the tab.
If the comparison suggests that the driver is fa-
tigued, the system will recommend a break via a
display in the instrument cluster at speeds of
65 km/h and above. If severe fatigue is detected,
a tone will also sound.
Note
If a different tab or function is selected in the
instrument cluster, the traffic light informa-
tion is displayed in the instrument cluster sta-
tus line.
System limits
The system may misinterpret the driving behav-
iour in certain driving situations, such as the fol-
lowing:
Driver messages
Applies to: vehicles with traffic light information
The following driver messages may appear, de-
pending on the equipment installed in your vehi-
cle:
– At speeds of below approx. 60 km/h
– At speeds of above approx. 130 km/h
– On twisty roads
– On poor road surfaces
Fault. See owner's manual
– When driving through roadworks
– In poor weather
The system configuration may be missing due to
a network fault. Restart the system by switching
the ignition off and locking the vehicle. Wait a
few minutes until the vehicle has shut down com-
pletely and then switch the ignition on again.
– During performance driving
– When your attention is distracted
– If the vehicle is towing a heavy or long trailer
– When lane guidance* is activated
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English 
