Driving and operating165Display indicationInformation 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.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.
166Driving and operating
When traffic sign assistant page is
displayed, press SET/CLR on the turn
signal lever.
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.
200Vehicle careThe 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
1.5 psi 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.
All wheels must be equipped with pressure sensors and the tyres must
have the prescribed pressure.
Notice
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.
Vehicle care201Uplevel 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 3 199.
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 3 234.
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.
If 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.
202Vehicle careVehicle loading status
Adjust tyre pressure to load condition according to tyre information label or
tyre pressure chart 3 234, 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.
● Light for comfort pressure up to
three people.
● Eco for Eco pressure up to three
people.
● Max for full loading.
Tyre pressure sensor matching process
Each tyre pressure sensor has a
unique identification code. The
identification code must be matched
to a new wheel position after rotating
the wheels or exchanging the
complete wheel set and if one or more tyre pressure sensors were replaced.
The tyre pressure sensor matching
process should also be performed
after replacing a spare wheel with a
road wheel containing a tyre pressure sensor.
The malfunction light w and the
warning message should extinguish
at the next ignition cycle. The sensors
are matched to the wheel positions,
using a relearn tool, in the following
order: left side front wheel, right side
front wheel, right side rear wheel and
Vehicle care203left side rear wheel. The turn signal
light at the current active position is
illuminated until sensor is matched.
Consult a workshop for service. There
are two minutes to match the first
wheel position, and five minutes
overall to match all four wheel
positions. If it takes longer, the
matching process stops and must be
restarted.
The tyre pressure sensor matching
process is:
1. Apply the parking brake.
2. Turn the ignition on.
3. On vehicles with automatic transmission: set the selector
lever to P.
On vehicles with manual
transmission: select neutral.
4. Press MENU on the turn signal
lever to select the Vehicle
Information Menu in the Driver
Information Centre.
5. Turn the adjuster wheel to scroll to
the tyre pressure menu.
Midlevel display:
Uplevel display:
6. Press SET/CLR to begin the
sensor matching process. A
message requesting acceptance
of the process should be
displayed.
7. Press SET/CLR again to confirm
the selection. The horn sounds
twice to signal that the receiver is
in relearn mode.
8. Start with the left side front wheel.
9. Place the relearn tool against the tyre sidewall, near the valve stem.Then press the button to activate
the tyre pressure sensor. A horn
chirp confirms that the sensor
identification code has been
matched to this tyre and wheel
position.
10. Proceed to the right side front wheel, and repeat the procedure
in Step 9.
11. Proceed to the right side rear wheel, and repeat the procedure
in Step 9.
12. Proceed to the left side rear wheel, and repeat the procedure
in Step 9. The horn sounds twice
to indicate the sensor
247Control indicators.......................... 87
Control of the vehicle .................133
Controls ........................................ 76
Convex shape .............................. 32
Coolant and antifreeze ...............221
Cruise control ...................... 95, 154
Cupholders .................................. 58
Curtain airbag system .................. 50
D Danger, Warnings and Cautions ...4
Daytime running lights ...............119
Declaration of conformity ............235
DEF ............................................ 143
Delayed locking ............................ 27
Descent control system .......93, 153
Diesel exhaust fluid ....................143
Diesel fuel system bleeding .......186
Door open .................................... 96
Doors ............................................ 29
Driver assistance systems ..........154
Driver Information Centre .............96
Driving characteristics and towing tips .............................. 175
Driving hints ................................ 133
E Electric adjustment ......................32
Electrical system......................... 192
Electronic climate control system 128
Electronic driving programmes ..147Electronic key system ...................22
Electronic Stability Control.......... 152
Electronic Stability Control and Traction Control system ............93
Electronic Stability Control off....... 93
End-of-life vehicle recovery .......180
Engine compartment fuse box ...193
Engine coolant ........................... 183
Engine coolant temperature gauge ....................................... 86
Engine data ............................... 228
Engine exhaust .......................... 141
Engine identification ...................224
Engine oil ................... 182, 221, 225
Engine oil pressure ......................94
Entry lighting .............................. 124
ERA GLONASS .......................... 113
Event data recorders ..................241
Exhaust filter ............................... 141
Exit lighting ................................ 125
Exterior care .............................. 217
Exterior light ................................. 95
Exterior lighting ....................12, 115
Exterior mirrors ............................. 32
F
Fault ........................................... 147
First aid kit ................................... 72
Fixed air vents ........................... 131
Flex-Fix system ............................ 60Folding mirrors ............................. 32
Following distance indication ......159
Forward collision alert................. 157
Front airbag system .....................49
Front fog lights .............95, 122, 189
Front seats.................................... 39
Front storage ................................ 59
Fuel............................................. 168
Fuel for diesel engines ..............170
Fuel for liquid gas operation .......170
Fuel for petrol engines ...............168
Fuel gauge ................................... 84
Fuel selector ................................ 85
Fuses ......................................... 192
G
Gauges ......................................... 83
Gear shifting ................................. 93
General information ...................175
Glovebox ..................................... 58
Glove box lighting .......................124
H Halogen headlights ....................188
Hand brake ................................. 150
Hazard warning flashers ............121
Headlight flash ........................... 117
Headlight range adjustment ......118
Headlights when driving abroad 118
Head restraint adjustment .............8
Head restraints ............................ 38