Driving and operating141
Control indicator r 3 86.
Activation
When reverse gear is engaged, the
system is activated automatically.
The front parking assist can also be activated at a low speed by pressing
the r button.
An illuminated LED in the parking assist button indicates that the
system is ready to operate.
An obstacle is indicated by a buzzing
sound. The interval between the sounds becomes shorter as the
vehicle gets closer to the obstacle.
When the distance is less than
30 cm, the buzzing is continuous.
If the r button is pressed once
within an ignition cycle, the front
parking assist is always reactivated
when the vehicle speed goes below a certain value.
Deactivation
Deactivate the system by pressing
the r button.
The LED in the button will go out and
Park Assist Off will be displayed in the
Driver Information Centre.
The system is deactivated
automatically at a certain speed.
Fault
In the event of a fault in the system,
r illuminates or a vehicle message
is displayed in the Driver Information
Centre.
Additionally, r illuminates or a
vehicle message is displayed in the
Driver Information Centre if amalfunction of the system due to
temporary conditions like snow
covered sensors is detected.
Vehicle messages 3 95.
Important hints for using the parking assist systems9 Warning
Under certain circumstances,
various reflective surfaces on
objects or clothing as well as
external noise sources may cause the system to fail to detect
obstacles.
Special attention has to be paid to
low obstacles which can damage
the lower part of the bumper. If
such obstacles leave the detection area of the sensors during
approach of the vehicle, a
continuous warning tone will
sound.
144Driving and operating
FaultFault messages are displayed with a9 on the top line of the Info-Display.
The rear view camera may not
operate properly when:
■ the surrounding is dark,
■ the sun or the beam of headlights is
shining directly into the camera
lens,
■ ice, snow, mud, or anything else covers the camera lens. Clean the
lens, rinse it with water, and wipe it
with a soft cloth,
■ the tailgate is not closed correctly,
■ the vehicle had a rear end accident,
■ there are extreme temperature changes.
Traffic sign assistant Functionality
The traffic sign assistant system
detects designated traffic signs via a
front camera and displays them in the Driver Information Centre.
Traffic signs, which will be detected,
are:
Limit and no passing signs ■ speed limit
■ no passing
■ end of speed limit
■ end of no passingRoad signs
Beginning and end of:
■ motorways
■ A-roads
■ play streetsAdd on signs ■ additional hints to traffic signs
■ restriction of trailer towing
■ 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 more signs in the
display are possible.
Driving and operating145
An exclamation mark in a frame
indicates that there is an add on sign
detected which cannot be recognised
by the system.
The system is active up to a speed of 124 mph depending on the lighting
conditions. At night the system is
active up to a speed of 99 mph.
As soon as the speed becomes
slower than 34 mph the display will be
reset and the content of the traffic sign
page will be cleared. The next
recognised speed indication will be displayed.
Display indication
Traffic signs are displayed on the
page Traffic sign detection on the
Driver Information Centre, chosen via the adjuster wheel on the turn signal
lever 3 90.
When another function on the Driver
Information Centre menu was
selected and then Traffic sign
detection page is chosen again, the
last recognised traffic sign will be displayed.
After the traffic sign page is cleared
by the system, the following symbol is
indicated:
The content of the traffic sign page is
also cleared during driving by
pressing the SET/CLR button on the
turn signal lever for a longer time.
146Driving and operating
Pop-up functionSpeed limits and no passing signs are displayed as pop-ups on each page
of the Driver Information Centre.
The pop-up function can be
deactivated on the traffic sign page by
pressing the SET/CLR button on the
turn signal lever.
Once setting page is displayed, select Off to deactivate pop-up function.
Reactivated by selecting On. When
switching on the ignition, pop-up
function is deactivated.
Pop-up indication is displayed for
approx. 8 seconds in the Driver
Information Centre.
Fault
The traffic sign assistant system may
not operate correctly when:
■ the area of the windscreen, where the front camera is located, is notclean
■ 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. In this
case No Traffic Sign Detection due
to Weather is indicated on the
display
■ traffic signs are incorrectly mounted
or damaged
■ traffic signs do not comply with the Vienna Convention on traffic signs
(Wiener Übereinkommen über
Straßenverkehrszeichen)Caution
The system is intended to help the driver within a defined speed
range to recognise certain traffic
178Vehicle care
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 type approval.
The current tyre pressures can be
shown in the Vehicle Information
Menu in the Driver Information Centre
(DIC).
The menu can be selected by the
buttons on the turn signal lever.Press the MENU button to select the
Vehicle Information Menu X .
Turn the adjuster wheel to select the
tyre pressure monitoring system.
System status and pressure warnings
are displayed by a message with the
corresponding tyre flashing in the
DIC.
A detected low tyre pressure
condition is indicated by the control
indicator w 3 87.
If w illuminates, stop as soon as
possible and inflate the tyres as
recommended 3 210.
If w flashes for 60-90 seconds and
then illuminates continuously, there is a fault in the system. Consult a
workshop.
After inflating, driving may be
required to update the tyre pressure
values in the DIC. During this time w
may illuminate.
Vehicle care179
If w illuminates at lower temperatures
and extinguishes after some driving,
this could be an indicator for getting
low pressure. Check tyre pressure.
Vehicle messages 3 95.
If the tyre pressure shall 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 temporary spare wheel is not
equipped with pressure sensors. The
tyre pressure monitoring system is
not operational for these wheels.
Control indicator w illuminates. For
the further three wheels 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.
External high-power radio equipment
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
clipped sensor: replace complete
valve stem.
Vehicle loading status
Adjust tyre pressure to load condition according to tyre information label or
tyre pressure chart 3 210, and select
the relevant setting in the menu Tire
Load in the Driver Information Centre,
Vehicle Information Menu 3 90.Select:
■ Light for comfort pressure up to
3 people
■ Eco for Eco pressure up to
3 people
■ Max for full loading
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. The identification
code must be matched to a new tyre/
wheel position after rotating the tyres
or exchanging the complete wheel set and if one or more TPMS sensors
were replaced. The TPMS sensor matching process should also be
performed after replacing a spare tyre
with a road tyre containing the TPMS
sensor.
The malfunction light and the warning
message or code should go off at the
next ignition cycle. The sensors are
matched to the tyre/wheel positions,
using a TPMS relearn tool, in the
following order: left side front tyre,
right side front tyre, right side rear
tyre, and left side rear.
180Vehicle care
Consult your workshop for service or
to purchase a relearn tool. There are
two minutes to match the first tyre/
wheel position, and five minutes
overall to match all four tyre/wheel
positions. If it takes longer, the
matching process stops and must be
restarted.
The TPMS sensor matching process
is:
1. Apply the parking brake; on vehicles with automatic
transmission set the selector lever
to P.
2. Turn the ignition on.
3. Use the MENU button on the turn
signal lever to select the Vehicle
Information Menu in the Driver
Information Centre (DIC).
4. Turn the adjuster wheel to scroll to
the tyre pressure menu.
5. Press the SET/CLR button to
begin the sensor matching process. A message requesting
acceptance of the process should display.6. Press the SET/CLR button again
to confirm the selection. The horn
sounds twice to signal the
receiver is in relearn mode.
7. Start with the left side front tyre.
8. Place the relearn tool against the tyre sidewall, near the valve stem.Then press the button to activate
the TPMS sensor. A horn chirp
confirms that the sensor
identification code has been
matched to this tyre and wheel
position.
9. Proceed to the right side front tyre,
and repeat the procedure in Step 8.
10. Proceed to the right side rear tyre,
and repeat the procedure in
Step 8.
11. Proceed to the left side rear tyre, and repeat the procedure inStep 8. The horn sounds twice to
indicate the sensor identification
code has been matched to the
driver side rear tyre, and the
TPMS sensor matching process
is no longer active.12. Turn off the ignition.
13. Set all four tyres to the recommended air pressure level
as indicated on the tyre pressure
label.
14. Ensure the tyre loading status is set according selected pressure
3 90.
Temperature dependency Tyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase.
The tyre pressure value displayed in
the Driver Information Centre shows
the actual tyre pressure. Therefore it
is important to check tyre pressure
with cold tyres.
Tread depth Check tread depth at regular
intervals.
Tyres should be replaced for safety
reasons at a tread depth of 2-3 mm
(4 mm for winter tyres).
217
Controls........................................ 72
Convex shape .............................. 27
Coolant and antifreeze ...............198
Cruise control ...................... 89, 136
Cupholders .................................. 55
Curtain airbag system .................. 45
D Danger, Warnings and Cautions ...4
Daytime running lights ...............106
Declaration of conformity ............212
Delayed locking ............................ 23
Descent control system .......86, 135
Diesel fuel system bleeding .......163
Diesel particle filter ...............87, 125
Door open .................................... 89
Doors ............................................ 24
Driver assistance systems ..........136
Driver Information Centre .............90
Driving characteristics and towing tips .............................. 154
Driving hints ................................ 120
E Electric adjustment ......................27
Electrical system......................... 170
Electronic climate control system 115
Electronic driving programmes ..129
Electronic Stability Control.......... 134Electronic Stability Control and Traction Control system ............87
Electronic Stability Control off....... 87
End-of-life vehicle recovery .......157
Engine compartment fuse box ...171
Engine coolant ........................... 159
Engine coolant temperature gauge ....................................... 80
Engine data ............................... 205
Engine exhaust .......................... 125
Engine identification ...................201
Engine oil ................... 158, 198, 202
Engine oil pressure ......................88
Entry lighting .............................. 112
Event data recorders ..................214
Exit lighting ................................ 112
Exterior care .............................. 193
Exterior light ................................. 88
Exterior lighting ....................12, 104
Exterior mirrors ............................. 27
F
Fault ........................................... 129 First aid kit ................................... 69
Fixed air vents ........................... 118
Flex-Fix system ............................ 57
Fog light ....................................... 89
Fog lights ................................... 167
Folding mirrors ............................. 27
Forward collision alert................. 138Front airbag system .....................44
Front fog lights ........................... 109
Front seats.................................... 34
Front turn signal lights ...............167
Fuel............................................. 148
Fuel consumption - CO 2-
Emissions ............................... 154
Fuel for diesel engines ..............148
Fuel for liquid gas operation .......149
Fuel for petrol engines ...............148
Fuel gauge ................................... 80 Fuel selector ................................ 80
Fuses ......................................... 170
G Gauges ......................................... 79
General information ...................154
Glovebox ..................................... 55
Glove box lighting .......................111
Graphic-Info-Display, Colour- Info-Display .............................. 93
H
Halogen headlights ....................164
Hand brake ......................... 131, 132
Hazard warning flashers ............109
Headlight flash ........................... 105
Headlight range adjustment ......105
Headlights when driving abroad 105
Head restraint adjustment .............8