Driving and operating165Limit and no passing signs● speed limit
● no passing
● end of speed limit
● end of no passingRoad signs
Beginning and end of:
● city regions (country specific)
● motorways
● A-roads
● play streetsAdd-on signs ● additional hints to traffic signs
● restriction of trailer towing
● tractor constraints
● wet warning
● ice warning
● direction arrows
Speed limit signs are displayed in the
Driver Information Centre until the
next speed limit sign or end of speed
limit is detected or up to a defined sign
timeout.
Combinations of multiple signs in the
display are possible.
An exclamation mark in a frame
indicates that there is an additional
sign detected which is not recognised
by the system.
The system operates without loss of
performance up to a speed of
200 km/h depending on the lighting
conditions. At night the system is
active up to a speed of 160 km/h.
Display indication
Information about the currently valid
traffic signs is available on the
designated traffic sign assistant page in the Driver Information Centre.
Additionally, the currently valid speed
limit is displayed permanently in the
lower line of the Driver Information
Centre. In case a speed limit with
addon is available, a + symbol is
displayed in this area.
166Driving and operating
Choose ? via MENU and select
traffic sign assistant page with the adjuster wheel on the turn signal lever
3 96.
When another page on the Driver
Information Centre menu was
selected and then traffic sign
assistant page is chosen again, the
last recognised traffic sign will be
displayed.
Alert function
The alert function can be activated or
deactivated in the setting menu of the
traffic sign assistant page.Once activated and when the traffic
sign detection page is currently not
displayed, newly detected speed limit and no passing signs are displayed
as popup alerts in the Driver
Information Centre.
When traffic sign assistant page is
displayed, press SET/CLR on the turn
signal lever.
Driving and operating167
Select Alerts ON or Alerts OFF by
turning the adjuster wheel and press
SET/CLR .
Pop-up alert is displayed for approx.
eight seconds in the Driver
Information Centre.
System reset The content of the traffic sign memory
can be cleared in the setting menu of
the traffic sign assistant page by
selecting Reset and confirm by
pressing SET/CLR on the turn signal
lever.
Alternatively, SET/CLR can be
pressed for three seconds to clear the
content of the page.
Upon successful reset, a chime will
sound and the following “Default
Sign” is indicated until the next traffic
sign is detected.
In some cases, traffic sign assistant is
cleared up automatically by the
system.
Clearing of traffic signs
There are different scenarios that
lead to clearing the currently
displayed traffic signs. After clearing,
the “Default Sign” is displayed in the
Driver Information Centre.
Reasons for signs being cleared:
● A predefined distance was driven
or time has elapsed (differs for
each sign type)
● Vehicle drives through a turn
● The speed becomes slower than 52 km/h (city entry detection)
Fault
The traffic sign assistant system may
not operate correctly if:
● The area of the windscreen, where the front camera is
located, is not clean or affected
by foreign items, e.g. stickers.
● Traffic signs are completely or partially covered or difficult to
discern.
● There are adverse environmental
conditions, e.g. heavy rain, snow,
direct sunlight or shadows.
● Traffic signs are incorrectly mounted or damaged.
● Traffic signs do not comply with the Vienna Convention on traffic
signs.
168Driving and operatingCaution
The system is intended to help thedriver within a defined speed
range to discern certain traffic
signs. Do not ignore traffic signs
which are not displayed by the
system.
The system does not discern any other than the conventional traffic
signs that might give or end a
speed limit.
Do not let this special feature
tempt you into taking risks when
driving.
Always adapt speed to the road
conditions.
The driver assistance systems do not relieve the driver from full
responsibility for vehicle
operation.
Lane departure warning
The lane departure warning system
observes the lane markings between
which the vehicle is driving via a front camera. The system detects lane
changes and warns the driver in the
event of an unintended lane change
via visual and acoustic signals.
Criteria for the detection of an
unintended lane change are:
● no operation of turn signals
● no brake pedal operation
● no active accelerator operation or
speeding-up
● no active steering
If the driver is active, no warning will
be issued.
ActivationThe lane departure warning system isactivated by pressing ). The
illuminated LED in the button
indicates that the system is switched
on.
When the control indicator ) in the
instrument cluster illuminates green,
the system is ready to operate.
The system is only operable at
vehicle speeds above 56 km/h and if
lane markings are available.
When the system recognises an
unintended lane change, the control
indicator ) changes to yellow and
flashes. Simultaneously a chime
sound is activated.
Vehicle care197No.Circuit16Adaptive forward lighting17Column lock18Ultrasonic park assist module19Body control module / Regu‐
lated voltage control20Steering wheel21–22Cigarette lighter / DC accessory
power outlet (front)23Cigarette lighter / DC accessory
power outlet (rear center
console)24Spare25Telematics service module26Heated steering wheel27Instrument panel cluster / Info‐
tainment system / Auxiliary
heater switch28Trailer socketNo.Circuit29Info Display / Infotainment
system30Transmission control module31Instrument panel cluster32Infotainment system33Trailer socket34Passive entry / Passive start
module
S/B Fuses
No.Circuit01Power seat switch02Spare03Power windows front04Power windows rear05Logistic mode06Power seat switchNo.Circuit07Spare08Spare
Midi Fuse
No.CircuitM01PTC
Load compartment fuse box
Located in the left side of rear
compartment.
To access the fuses, remove the cover.
Vehicle care201The tyre pressure data refers to cold
tyres. It applies to summer and winter
tyres.
Always inflate the spare tyre to the
pressure specified for full load.
The ECO tyre pressure serves to
achieve the smallest amount of fuel
consumption possible.
Incorrect tyre pressures will impair
safety, vehicle handling, comfort and
fuel economy and will increase tyre
wear.
Tyre pressures differ depending on
various options. For the correct tyre
pressure value, follow the procedure
below:
1. Identify the engine identifier code.
Engine data 3 230.
2. Identify the respective tyre.
The tyre pressure tables show all possible tyre combinations 3 236.
For the tyres approved for your
vehicle, refer to the EEC Certificate of
Conformity provided with your vehicle or other national registration
documents.The driver is responsible for correct
adjustment of tyre pressure.9 Warning
If the pressure is too low, this can
result in considerable tyre warm-
up and internal damage, leading to tread separation and even to tyre
blow-out at high speeds.
9 Warning
For specific tyres the
recommended tyre pressure as
shown in the tyre pressure table may exceed the maximum tyre
pressure as indicated on the tyre.
Never exceed the maximum tyre
pressure as indicated on the tyre.
Temperature dependency
The tyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase. Tyre pressure
values provided on the tyre
information label and tyre pressure
chart are valid for cold tyres, which means at 20 °C.
The pressure increases by nearly
10 kPa for a 10 °C temperature
increase. This must be considered
when warm tyres are checked.
The tyre pressure value displayed in
the Driver Information Centre shows
the real tyre pressure. A cooled down
tyre will show a decreased value,
which does not indicate an air leak.
Tyre pressure monitoringsystem
The tyre pressure monitoring system
checks the pressure of all four tyres
once a minute when vehicle speed
exceeds a certain limit.Caution
Tyre pressure monitoring system
warns only about low tyre pressure condition and does not replace
regular tyre maintenance by the
driver.
202Vehicle careAll wheels must be equipped with
pressure sensors and the tyres must
have the prescribed pressure.
Note
In countries where the tyre pressure monitoring system is legally
required, the use of wheels without
pressure sensors will invalidate the
vehicle operating permit.
The current tyre pressures can be
shown in the Driver Information
Centre.
Midlevel display:
Select the Tyre pressure page under
the Vehicle Information Menu ? in
the Driver Information Centre 3 96.
Uplevel display:
Select the Tyre pressure page under
the Info Menu in the Driver
Information Centre 3 96.
System status and pressure warnings
are displayed by a message
indicating the corresponding tyre in
the Driver Information Centre.
The system considers the tyre
temperature for the warnings.
Temperature dependency 3 200.
A detected low tyre pressure
condition is indicated by the control
indicator w 3 94.
If w illuminates, stop as soon as
possible and inflate the tyres as
recommended 3 236.
If w flashes for 60-90 seconds and
then illuminates continuously, there is a fault in the system. Consult a
workshop.
After inflating, some driving may be
required to update the tyre pressure
values in the Driver Information
Centre. During this time w may
illuminate.
If w illuminates at lower temperatures
and extinguishes after driving, this
could be an indicator for approaching
a low tyre pressure condition. Check
tyre pressure.
Vehicle messages 3 103.
Vehicle care203If the tyre pressure must be reduced
or increased, switch off ignition.
Only mount wheels with pressure
sensors, otherwise the tyre pressure
will not be displayed and w
illuminates continuously.
A spare wheel or temporary spare
wheel is not equipped with pressure
sensors. The tyre pressure
monitoring system is not operational
for these tyres. Control indicator w
illuminates. For the further three
tyres, the system remains
operational.
The use of commercially-available liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
Operating electronic devices or being
close to facilities using similar wave
frequencies could disrupt the tyre
pressure monitoring system.
Each time the tyres are replaced, tyre pressure monitoring system sensors
must be dismounted and serviced.
For the screwed sensor, replace
valve core and sealing ring. For the
clipped sensor, replace complete
valve stem.Vehicle loading status
Adjust tyre pressure to load condition
according to tyre information label or
tyre pressure chart 3 236, and select
the appropriate setting in the menu Tyre Load in the Driver Information
Centre, Vehicle Information Menu
3 96. This setting is the reference for
the tyre pressure warnings.
The Tyre load menu only appears
when the vehicle is at a standstill and the parking brake is applied. On
vehicles with automatic transmission
the selector lever must be in P.
Midlevel display:Select the Tyre load page under the
Vehicle Information Menu ? in the
Driver Information Centre 3 96.
● Light for comfort pressure up to
three people.
● Eco for Eco pressure up to three
people.
● Max for full loading.
Uplevel display:
Select the Tyre load page under the
Options Menu in the Driver
Information Centre 3 96.