
KEYLESS-GO start function
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a Smart-
Key in the vehicle (Y page 129).Changing the settings of the locking
system
You can change the settings of the locking sys-
tem. This means that only the driver's door and
the fuel filler flap are unlocked when the vehicle is unlocked. This is useful if you frequently travelalone.
X To change the setting: press and hold down
the 0036 and0037 buttons simultaneously
for about six seconds until the battery indica-
tor lamp flashes twice (Y page 77).
If the setting of the locking system is changed
within the signal range of the vehicle, pressing
the 0037 or0036 button:
R locks or
R unlocks the vehicle
The SmartKey now functions as follows:
X To unlock: press the0036button once.
X To unlock centrally: press the0036button
twice.
X To lock centrally: press the0037button.
The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the inner
surface of the door handle on the driver's
door.
X To unlock centrally: touch the inner surface
of the door handle on the front-passenger
door or the rear door.
X To lock centrally: touch the outer sensor
surface on one of the door handles
(Y page 75).
X To restore the factory settings: press and
hold down the 0036and0037 buttons simul-
taneously for approximately six seconds until
the battery check lamp flashes twice
(Y page 77). Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey or with KEYLESS-
GO, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm sys- tem will be triggered. Switch off the alarm
(Y page 73).
If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked auto-
matically.
X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch 0043in the direction of the
arrow and at the same time remove mechan- ical key 0044from the SmartKey.
For further information about:
R Unlocking the driver's door (Y page 81)
R Unlocking the cargo compartment
(Y page 85)
R Locking the vehicle (Y page 81)
Inserting the mechanical key X
Push mechanical key 0044completely into the
SmartKey until it engages and release
catch 0043is back in its basic position. 76
SmartKeyOpening and closing

X
Repeatedly tap the SmartKey against your
palm until battery 0087falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth to do so.
X Make sure that the surface of the battery is
free of lint, grease and other contaminants. X
Insert the front tabs of battery compartment
cover 0043into the housing first and then press
to close it.
X Insert mechanical key 0044into the SmartKey
(Y page 76).
X Check the function of all SmartKey buttons on
the vehicle. Problems with the SmartKey
Problem
Possible causes/consequences and
0050 0050Solutions You can no longer lock or
unlock the vehicle using
the SmartKey. The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 77) and replace it if necessary
(Y page 77).
If this does not work: X Unlock (Y page 81) or lock (Y page 81) the vehicle using the
mechanical key. There is interference from a powerful source of radio waves.
X Unlock (Y page 81) or lock (Y page 81) the vehicle using the
mechanical key. The SmartKey is faulty.
X Unlock (Y page 81) or lock (Y page 81) the vehicle using the
mechanical key.
X Have the SmartKey checked at a qualified specialist workshop. You can no longer lock or
unlock the vehicle using
KEYLESS-GO. KEYLESS-GO was deactivated.
X Reactivate KEYLESS-GO (Y page 75). The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 77) and replace it if necessary
(Y page 77).
If this does not work: X Unlock (Y page 81) or lock (Y page 81) the vehicle using the
mechanical key. 78
SmartKeyOpening and closing

Problem
Possible causes/consequences and
0050
0050Solutions There is interference from a powerful source of radio waves.
X Unlock (Y page 81) or lock (Y page 81) the vehicle using the
mechanical key. KEYLESS-GO is malfunctioning.
X Lock/unlock the vehicle using the remote control function of the
SmartKey.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
X Unlock (Y page 81) or lock (Y page 81) the vehicle using the
mechanical key.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop. The engine cannot be
started using the Smart-
Key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary (Y page 317).
or X Jump-start the vehicle (Y page 318).
or X Consult a qualified specialist workshop. The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 77) and replace it if necessary
(Y page 77).
If this does not work: X Start your vehicle with the SmartKey in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the SmartKey in the ignition lock. You have lost a Smart-
Key. X
Have the SmartKey deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. SmartKey
79Opening and closing Z

X
Press the 0036button on the SmartKey.
X Press handle for the tailgate 0043.
The tailgate opens automatically.
Closing X
Pull the tailgate down using recess 0043.
You can release the tailgate as soon as the
tailgate starts to close.
X Lock the vehicle if necessary with the 0037
button on the SmartKey or with KEYLESS-GO.
i If a KEYLESS-GO key is detected in the cargo
compartment, the tailgate will not lock. Opening/closing automatically from
the outside
Important safety notes G
WARNING
Parts of the body could become trapped dur-
ing automatic closing of the tailgate. More-
over, people, e.g. children, may be standing in the closing area or may enter the closing area
during the closing process. There is a risk of
injury.
Make sure that nobody is in the vicinity of the closing area during the closing process.
Use one of the following options to stop the
closing process:
R press the 0054button on the SmartKey.
R pull or press the remote operating switch
on the driver's door. R
press the closing or locking button on the
tailgate.
R pull the handle on the tailgate G
DANGER
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the tail- gate is open while the engine is running, espe-cially if the vehicle is in motion. There is a risk of poisoning.
Always switch off the engine before opening
the tailgate. Never drive with the tailgate
open.
! The tailgate swings upwards and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
Two warning tones sound while the tailgate is
opening or closing.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 364).
i Notes on the automatic reversing feature for
the tailgate (Y page 82).
Opening the tailgate automatically You can open the tailgate automatically with the
SmartKey or the handle in the tailgate.
X Press and hold the 0054button on the Smart-
Key until the tailgate opens.
or X When the tailgate is unlocked, pull the tailgate
handle and let it go again immediately.
or
X With the tailgate stopped in an intermediate
position, pull the tailgate upwards.
You can release the tailgate as soon as the
tailgate starts to open. Cargo compartment
83Opening and closing Z

Closing the tailgate automatically
X
To close: press closing button 0043in the tail-
gate.
or
X Vehicles with KEYLESS-GO or KEYLESS-GO
starting function: Press and hold the 0054
button on the SmartKey until the tailgate
closes. The SmartKey must be located in the
immediate vicinity of the vehicle.
You can release the button as soon as the
tailgate starts to close.
or X Pull the tailgate down slightly.
You can release the tailgate as soon as the
tailgate starts to close.
Vehicles with KEYLESS-GO or KEYLESS-GO
starting function: you can close and lock the
tailgate simultaneously.
X Press locking button 0044in the tailgate.
If a KEYLESS-GO key or KEYLESS-GO starting
function key is detected outside the vehicle,
the tailgate closes and locks. All the doors
must be shut and the SmartKey located in the vicinity of the tailgate.
i The tailgate cannot be opened and closed
with the SmartKey if there is a SmartKey in the
ignition.
If the tailgate touches an object while closing, the closing procedure is interrupted and the
tailgate reopens.
If a KEYLESS-GO key or KEYLESS-GO starting
function key is detected in the cargo com-
partment, the tailgate will not lock. Opening/closing automatically from
inside
Important safety notes G
WARNING
Parts of the body could become trapped dur-
ing automatic closing of the tailgate. In addi-
tion, people may be standing in the closing
area or may enter the closing area, e.g. chil-
dren, during the closing procedure. There is a risk of injury.
Make sure that nobody is in the vicinity of theclosing area during the closing process.
Release the remote operating switch imme-
diately if somebody becomes trapped. To re-
open the tailgate pull on the remote operating
switch. G
DANGER
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the tail- gate is open while the engine is running, espe-cially if the vehicle is in motion. There is a risk of poisoning.
Always switch off the engine before opening
the tailgate. Never drive with the tailgate
open.
! The tailgate swings upwards and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
Two warning tones sound while the tailgate is
opening or closing.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 364).
i Notes on the automatic reversing feature for
the tailgate (Y page 82).84
Cargo compartmentOpening and closing

X
Turn the SmartKey to position 0047or0048 in the
ignition lock.
X To open manually: press and hold the cor-
responding switch.
X To open fully: press the switch beyond the
pressure point and release it.
Automatic operation is started.
X To close manually: pull the corresponding
switch and hold it.
X To close fully: pull the switch beyond the
pressure point and release it.
Automatic operation is started.
X To interrupt automatic operation: press/
pull the corresponding switch again.
If you press the switch beyond the pressure
point and release, automatic operation is star-
ted in the corresponding direction. You can stop automatic operation by pressing/pulling the
switch again.
You can continue to operate the side windows
after you switch off the engine or remove the
SmartKey. This function is available for up to five
minutes or until the driver's or front-passenger
door is opened.
The side windows cannot be operated from the
rear when the override feature for the side win- dows is activated (Y page 63). Convenience opening
General notes The convenience opening feature is only availa-
ble in vehicles with the KEYLESS-GO or KEY-
LESS-GO start function.
You can ventilate the vehicle before you start
driving.
To do this, the SmartKey is used to carry out the
following functions simultaneously:
R unlock the vehicle
R open the side windows
R open the panorama roof with power tilt/slid-
ing panel and the roller sunblind
R switch on the seat ventilation for the driver's
seat
The convenience opening feature can only be
operated using the SmartKey. The SmartKey
must be in close proximity to the vehicle.
The "convenience opening" feature is also avail-
able when the vehicle is unlocked. Convenience opening X
Press and hold the 0036button until the side
windows and the panorama roof with power
tilt/sliding panel are in the desired position.
If the roller sunblind of the panorama roof
with power tilt/sliding panel is closed, the
roller sunblind is opened first.
X Press and hold the 0036button again until the
panorama roof with power tilt/sliding panel is
in the desired position.
X To interrupt convenience opening: release
the 0036 button. Convenience closing feature
Important safety notes G
WARNING
When the convenience closing feature is oper- ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. Make sure that no body parts are in
close proximity during the closing procedure.
The convenience closing feature is available
only in vehicles with KEYLESS-GO or KEYLESS-
GO start function.
When you lock the vehicle, you can simultane-
ously: R close the side windows
R close the panorama roof with power tilt/slid-
ing panel
On vehicles with a panorama roof with power
tilt/sliding panel, you can then close the roller
sunblind.
Proceed as follows if someone is trapped:
R Release the 0037button to interrupt the clos-
ing procedure.
R Press and hold the 0036button to open.
Vehicles with KEYLESS-GO:
R Release the sensor surfaces on the exterior
door handle to interrupt the closing proce-
dure.
R To open, pull the same door handle immedi-
ately and hold it firmly. The side windows and Side windows
87Opening and closing Z

the sliding sunroof will open for as long as the
door handle is held but the door is not
opened.
Notes on the automatic reversing feature for:
R The side window (Y page 86)
R The panorama roof with power tilt/sliding
panel (Y page 90)
Using the SmartKey The SmartKey must be close to the vehicle. For
vehicles without KEYLESS-GO, the SmartKey
must be near the driver's door handle.
X Vehicles without KEYLESS-GO: point the tip
of the SmartKey at the door handle on the
driver's door.
X Press and hold the 0037button until the side
windows and the panorama roof with power
tilt/sliding panel are fully closed.
X Make sure that all the side windows and the
panorama roof with power tilt/sliding panel
are closed.
On vehicles with a panorama roof with power
tilt/sliding panel:
X Press and hold the 0037button again until the
roller sunblind of the panorama roof with
power tilt/sliding panel closes.
X To interrupt convenience closing: release
the 0037 button.
Using KEYLESS-GO X
Touch recessed sensor surface 0043on the
door handle until the side windows and the
panorama roof with power tilt/sliding panel
are fully closed.
i Make sure you only touch recessed sensor
surface 0043.
X Make sure that all the side windows and the
panorama roof with power tilt/sliding panel
are closed.
X Vehicles with a panorama roof with
power tilt/sliding panel: touch recessed
sensor surface 0043on the door handle again
until the roller sunblinds of the panorama roof with power tilt/sliding panel close.
X To interrupt convenience closing: release
recessed sensor surface 0043on the door han-
dle. Resetting the side windows
If a side window can no longer be closed fully,
you must reset it.
X Close all the doors.
X Turn the SmartKey to position 0047or0048 in the
ignition lock.
X Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed (Y page 86).
X Hold the switch for an additional second.
If the side window opens again slightly: X Immediately pull the corresponding switch on
the door control panel until the side window is completely closed (Y page 86).
X Hold the switch for an additional second.
X If the respective side window remains closed
after the button is released, then it has been
set correctly. If this is not the case, repeat the
steps above. Problems with the side windows
G
WARNING
If you close a side window again immediately after it has been blocked or reset, the side window
closes with increased or maximum force. The reversing feature is then not active. Parts of the 88
Side
windowsOpening an d closing

0043
Release lever
0044 Adjusts the steering wheel height
0087 Adjusts the steering wheel position (fore-
and-aft adjustment)
X Push release lever 0043down completely.
The steering column is unlocked.
X Adjust the steering wheel to the desired posi-
tion.
X Push release lever 0043up completely.
The steering column is locked.
X Check if the steering column is locked. When
doing so, try to push the steering wheel up or down or try to move it in the fore-and-aft
direction. Adjusting the steering wheel electri-
cally 0043
Adjusts the steering wheel height
0044 Adjusts the steering wheel position (fore-
and-aft adjustment) The steering wheel can also be adjusted when
the SmartKey is removed from the ignition lock.
i Further related subjects:
R EASY-ENTRY/EXIT feature (Y page 101)
R Storing settings (Y page 105) Steering wheel heating
Switching on/off X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X To switch on/off: turn the lever in the direc-
tion of arrow 0043or0044.
Indicator lamp 0087lights up or goes out.
Vehicles with KEYLESS-GO: when you switch off the ignition and open the driver's door, the
steering wheel heating is deactivated.
Vehicles without KEYLESS-GO: when you
remove the SmartKey from the ignition lock, the
steering wheel heating is deactivated. 100
Steering wheelSeats
, steering wheel and mirrors