Driving and operating147Parking assist button D and
operation logic
Front-rear parking assist and
advanced parking assist both use the same button for activation and
deactivation:
A brief press of D activates or
deactivates the parking assist.
A long press of D (approx.
one second) activates or deactivates
the advanced parking assist, see
separate description.
Button logic operates the systems by
pressing D as follows:
● If only front-rear parking assist is active, a brief press deactivates
front-rear parking assist.
● If only front-rear parking assist is active, a long press activates
advanced parking assist.
● If only advanced parking assist is
active and the system is in
parking slot searching mode, a
brief press activates front-rear
parking assist.
● If only advanced parking assist is
active and the system is in park
guiding mode, a brief press
deactivates advanced parking
assist.
● If advanced parking assist is active, a long press deactivates
advanced parking assist and front-rear parking assist.● If a forward gear or neutral is selected, a brief press activates
or deactivates only front parking
assist.
● If reverse gear is selected, a brief
press activates or deactivates front and rear parking assist.
Activation
The system is activated automatically
at a speed up to 7 mph.
An illuminated LED in the parking
assist button D indicates that the
system is ready to operate.
If D is switched off within an ignition
cycle, the front parking assist is
deactivated. If vehicle speed has
exceeded 15 mph beforehand,
parking assist will be reactivated when speed drops below 7 mph.
When the system is deactivated, the
LED in the button extinguishes and
Park Assist Off pops-up in the Driver
Information Centre.
Indication
The system warns the driver with
acoustic signals against potentially
hazardous obstacles in front of the
150Driving and operatingButton logic operates the systems by
pressing D as follows:
● If only front-rear parking assist is active, a brief press deactivates
front-rear parking assist.
● If only front-rear parking assist is active, a long press activates
advanced parking assist.
● If only advanced parking assist is
active and the system is in
parking slot searching mode, a brief press activates front-rear
parking assist.
● If only advanced parking assist is
active and the system is in park
guiding mode, a brief press
deactivates advanced parking
assist.
● If advanced parking assist is active, a long press deactivates
advanced parking assist and front-rear parking assist.● If forward gear or neutral is selected, a brief press activates
or deactivates front parking
assist.
● If reverse gear is selected, a brief
press activates or deactivates
front and rear parking assist.
Activation
When searching for a parking slot, the
system is ready to operate with a long press of D.
The system recognises and
memorises ten metres for parallel
parking slots or six metres for
perpendicular parking slots in the parking assist mode.
The system can only be activated at
a speed up to 18 mph and the system searches for a parking slot at a speed
up to 18 mph.
The maximum allowed parallel
distance between the vehicle and a
row of parked cars is 1.8 metres for parallel parking and 2.5 metres for
perpendicular parking.
FunctionalityParking slot searching mode
Indication in the Driver Information
Centre
156Driving and operatingCaution
Use of fuel that does not comply toEN 228 or E DIN 51626-1 or
equivalent can lead to deposits or
engine damage.
Caution
Use of fuel with a lower octane
rating than the lowest possible
rating could lead to uncontrolled combustion and engine damage.
The engine specific requirements
regarding octane rating are given in
the engine data overview 3 219. A
country specific label at the fuel filler
flap can supersede the requirement.
Fuel for liquid gas operation Liquid gas is known as LPG
(Liquefied Petroleum Gas) or under
its French name GPL (Gaz de Pétrole Liquéfié). LPG is also known as
Autogas.
LPG consists mainly of propane and
butane. The octane rating is between 105 and 115, depending on the
butane proportion. LPG is stored
liquid at around five to ten bar
pressure.
The boiling point depends on the
pressure and mixing ratio. At ambient
pressure, it is between -42 °C (pure
propane) and -0.5 °C (pure butane).Caution
The system works at an ambient
temperature of approx. -8 °C to
100 °C.
Full function of the LPG system can only be guaranteed with liquid gas
which complies with the minimum
requirements of DIN EN 589.
Fuel selector
Pressing LPG switches between
petrol and liquid gas operation as
soon as the required parameters (coolant temperature, gas
temperature and minimum engine
speed) have been reached. The
requirements are usually fulfilled after
approx. 60 seconds (depending on
exterior temperature) and the first firm press on the accelerator. The LED
status shows the current operating
mode.
190Vehicle careand hold brake pedal. Move and
hold the selector lever for five
seconds in position N until P is
displayed in the Driver Information Centre. P indicates
that the sensor matching process
can be started.
On vehicles with manual
transmission: select neutral.
4. Use 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.
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 indicate 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 activatethe tyre pressure sensor. A horn
chirp confirms that the sensor
identification code has been
matched to this 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 that the sensor
identification code has been
matched to the left side rear
wheel, and the tyre pressure
sensor matching process is no
longer active.
13. Turn off the ignition.
14. Set all four tyres to the recommended air pressure level
as indicated on the tyre
information label.
15. Ensure the tyre loading status is set according to the selected
pressure 3 89.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).
For safety reasons it is recommended
that the tread depth of the tyres on
one axle should not vary by more than 2 mm.
The legally permissible minimum
tread depth (1.6 mm) has been
reached when the tread has worn
down as far as one of the tread wear
236Immobiliser ............................ 26, 89
Indicators ...................................... 79
Inductive charging ........................77
Information displays...................... 89
Instrument cluster ........................79
Instrument panel fuse box .........182
Instrument panel illumination .....178
Instrument panel illumination control .................................... 111
Instrument panel overview ........... 10
Interior care ............................... 209
Interior lighting ............................ 111
Interior lights ...................... 111, 178
Interior mirrors .............................. 28
Introduction .................................... 3
ISOFIX child restraint systems ....50
J Jump starting ............................. 203
K Key, memorised settings ..............21
Keys ............................................. 19
Keys, locks ................................... 19
L
Lashing eyes ............................... 66
Light switch ................................ 107
Load compartment ................24, 62
Load compartment cover .............64Loading information .....................68
Low fuel ....................................... 88
M Malfunction indicator light ............86
Manual anti-dazzle ......................28
Manual mode ............................. 135
Manual transmission .................. 132
Manual transmission automated 132
Memorised settings ......................21
Midlevel-Display ........................... 89
Mirror adjustment ........................... 8
Misted light covers .....................111
N
New vehicle running-in ..............126
Number plate light .....................177
O Object detection systems ...........145
Odometer ..................................... 79
Oil, engine .......................... 212, 216
OnStar ........................................ 102
Operate pedal ............................... 86
Outside temperature ....................74
Overrun cut-off ........................... 127
P Parking ................................ 18, 130
Parking assist ............................ 145
Parking brake ............................ 137Parking lights ............................. 110
Performance .............................. 221
Performing work ........................164
Pollen filter ................................. 123
Power outlets ............................... 77
Power steering.............................. 87
Power windows ............................ 29
Puncture ..................................... 196
R Radio Frequency Identification (RFID) ..................................... 232
Radio remote control ...................20
Rear carrier system ......................53
Rear floor storage cover ..............65
Rear fog light ............................... 89
Rear fog lights ........................... 110
Rear storage ................................. 63
Rear window wiper/washer .......... 74 Recommended fluids and lubricants ........................ 212, 216
Refuelling ................................... 158 Registered trademarks ...............231
Retained power off .....................126
Reversing lights .........................111
Ride control systems ..................138
Roof load ...................................... 68
Roof rack ..................................... 67