Problem Possible causes/consequences and
M SolutionsYou have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. The engine cannot be
started using the
SmartKey. 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 312).
or
X Jump-start the vehicle (Y page 313).
or
X Consult a qualified specialist workshop. Vehicles without
DIRECT SELECT lever
only:
The engine cannot be
started using the
SmartKey. The steering lock is mechanically blocked.
X
Remove the SmartKey and reinsert it into the ignition lock. While
doing this, turn the steering wheel in both directions. The engine cannot be
started
using KEYLESS-
GO. The SmartKey is in
the vehicle. A door is open. Therefore, the SmartKey cannot be detected as
easily.
X
Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock.78
SmartKey
Opening/closing
X
Turn the mechanical key counter-clockwise
to position 1.
The door is unlocked.
X Turn the mechanical key back and remove
it.
X Insert the mechanical key into the
SmartKey.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered
(Y page 70). Locking the vehicle (mechanical key)
If
the vehicle can no longer be locked with the
SmartKey, use the mechanical key.
X Open the driver's door.
X Close the front-passenger door and the
trunk lid.
X Press the locking button (Y page 79).
X Check whether the locking knob on the
front-passenger door is still visible. If
necessary,
press the locking knob down by
hand ( Y page 79).
X Close the driver's door.
X Take the mechanical key out of the
SmartKey (Y page 74).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. 1
Locking
X Turn the mechanical key clockwise as far
as it will go to position 1.
X Turn the mechanical key back and remove
it. X
Make sure that the doors and the trunk lid
are locked.
X Insert the mechanical key into the
SmartKey. Trunk
Important safety notes
G
WARNING
Make sure the trunk lid is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases
may enter the vehicle interior resulting
in unconsciousness and death. G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint
system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. Trunk
81
Opening/closing Z
G
WARNING
Do not carry heavy or hard objects in the
passenger compartment or trunk unless they
are firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident
! The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
i Opening dimensions of the trunk lid
(Y page 367).
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
The trunk lid can be:
R opened and closed manually from outside
R opened automatically from outside
R opened automatically from inside
R locked separately
R opened with the emergency release button
R unlocked with the mechanical key Opening/closing from outside
Opening X
Press the % button on the SmartKey.
X Pull handle :.
X Raise the trunk lid.
Closing G
WARNING
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk lid. Be
especially careful when small children are
around. X
Pull the trunk lid down using recess :.
X If necessary, lock the vehicle with
the & button on the SmartKey
(Y page 73) or with KEYLESS-GO
(Y page 73).
i If a KEYLESS-GO key is detected in the
trunk, the trunk lid cannot be locked and
then opens again. Opening automatically from the
outside
Important safety notes G
WARNING
Make sure the trunk lid is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases
may enter the vehicle interior resulting
in unconsciousness and death. 82
Trunk
Opening/closing
!
The trunk lid swings upwards when
opened.
Therefore, make sure that there is
sufficient clearance above the trunk lid.
i Opening dimensions of the trunk lid
(Y page 367).
Opening You can unlock and open the trunk lid
simultaneously with the SmartKey.
X
Press and hold the F button on the
SmartKey until the trunk lid opens. Opening automatically from the
inside
Important safety notes G
WARNING
Make sure the trunk lid is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases
may enter the vehicle interior resulting
in unconsciousness and death.
i Opening dimensions of the trunk lid
(Y page 367).
Opening X
To open: pull remote operating switch for
trunk lid : until the trunk lid opens.
You can open the trunk lid from the driver's
seat when the vehicle is stationary and
unlocked. Locking the trunk separately
You
can lock the trunk separately. If you then
unlock the vehicle centrally, the trunk
remains locked and cannot be opened.
X Close the trunk lid.
X Take the mechanical key out of the
SmartKey (Y page 74). 1
Basic position
2 Locking
X Insert the mechanical key into the trunk lid
lock as far as the stop.
X Turn the mechanical key clockwise from
position 1 to position 2.
X Remove the mechanical key.
X Insert the mechanical key into the
SmartKey. Unlocking the trunk (mechanical key)
! The trunk lid swings upwards when
opened.
Therefore, make sure that there is
sufficient clearance above the trunk lid.
If the trunk cannot be unlocked with the
SmartKey or KEYLESS-GO, use the
mechanical key.
If you use the mechanical key to unlock and
open the trunk lid, the anti-theft alarm system
will be triggered ( Y page 70).
X Take the mechanical key out of the
SmartKey (Y page 74).
X Insert the mechanical key into the trunk lid
lock as far as the stop. Trunk
83
Opening/closing Z
pane and the door frame and trap it there. If
there is a risk of entrapment, release the
switch and pull it to close the window.
Opening and closing the side
windows
The
switches for all side windows are located
on the driver's door. There is also a switch on
the front-passenger door as well as on the
doors in the rear compartment on the left and
right-hand sides for the respective side
window.
The switches on the driver's door take
precedence. :
Front left
; Front right
= Rear right
? Rear left
X Turn the SmartKey to position 1
or 2 in the
ignition lock.
X To open: press the corresponding switch.
X To close: pull the corresponding switch.
i You can start automatic operation when
opening
and closing the front door windows
and when opening the rear door windows.
To do so, briefly press or pull the switch to
beyond the point of resistance in the
relevant direction. You can stop automatic
operation by pressing or pulling again.
i 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.
i When the override feature for the side
windows is activated ( Y page 63), the side
windows cannot be operated from the rear. Opening and closing all side windows
(Cabriolet)
Using the switch on the center console You can use the button on the center console
to close all side windows simultaneously.
X
Open the cover in the lower center console.
The
switch for all side windows is under the
cover. X
To open all side windows: press
switch : to the point of resistance.
X To open all side windows fully: press
switch : beyond the point of resistance.
X To close all side windows: pull
switch :.
Using the SmartKey G
WARNING
Make sure that nobody can become trapped
as you close the side windows.
Proceed as follows if there is a risk of
entrapment:
R release the & key.
R press and hold the % key until the side
windows open again. Side windows
85
Opening/closing Z
to under 25 mph (40 km/h) and pull the
soft top switch again.
X To close: press and hold soft-top
switch : until the soft top is fully closed.
The Convertible Top in Operation
message appears in the multifunction
display.
If you drive faster than 25 mph (40 km/h)
during the closing procedure, the closing
procedure
is stopped and the Open/Close
Convertible Top Completely message
is displayed in the multifunction display. To
fully close the soft top, reduce speed back
to under 25 mph (40 km/h) and push the
soft top switch again. Opening and closing using the
SmartKey
Important safety notes G
WARNING
Make sure nobody can be trapped or injured
by moving parts such as the soft-top linkage
or
soft-top compartment cover when opening
or closing the soft top.
If there is a risk of entrapment, immediately
release the % or & button on the
SmartKey. The soft-top mechanism stops
immediately.
Opening/closing The SmartKey must be close to the driver's
door handle.
X
Point the tip of the SmartKey at the driver's
door handle.
X To open: press and hold the % button
on the SmartKey until the soft top is fully
opened.
The Convertible Top in Operation
message appears in the multifunction display. The seat ventilation is switched on.
The rear side windows open.
X To close: press and hold the & button
on the SmartKey until the soft top is fully
closed.
The Convertible Top in Operation
message appears in the multifunction
display.
The soft top and the side windows
close. Closing the soft top manually
Important safety notes G
WARNING
Remove wristwatches and any jewelry such
as
rings or bracelets. You could otherwise get
caught, be injured and damage the vehicle.
Always grip the soft top at the indicated
gripping points when closing the soft top
manually. You could otherwise be injured.
If the soft top cannot be closed automatically,
check the following points:
R Is the trunk partition engaged
(Y page 96)?
R Are the head restraints on the rear bench
seats extended?
R Is the trunk lid closed?
R Is the on-board voltage sufficient?
Start the engine if necessary.
If automatic operation still does not work, the
soft top can be closed manually.
To carry out this work, you will need the
assistance of another person.
i Closing the soft top manually is a
complex, technically demanding process
which requires a great deal of force. Only
close the soft top manually in extreme
emergencies. Preferably, contact a
qualified specialist workshop. Soft top (Cabriolet)
91Opening/closing Z
bench seats and AIRCAP wind screen =
move to the upper position.
i
If you park your vehicle with the soft top
down and remove the SmartKey, the wind
deflector
and the head restraints in the rear
compartment retract automatically. When
you start the engine again, the wind
deflector and the head restraints in the rear
compartment extend again automatically.
i It is no longer possible to retract/extend
AIRCAP if you are driving faster than
100 mph (160 km/h).
Retracting AIRCAP X
Turn the SmartKey to position 2 in the
ignition lock.
X Open the cover in the lower center console.
X Press AIRCAP button :.
The two indicator lamps on the AIRCAP
button go out. Wind deflector ; retracts.
The head restraints on the rear bench seats
and AIRCAP wind screen = move to the
lower position simultaneously.
i If
there are passengers wearing seat belts
in the rear compartment, the head
restraints on the rear bench seats and the
AIRCAP wind screen remain in the upper
position.
Retracting the head restraints on the
rear bench seats from the driver's seat To improve the rear view, you can retract the
head restraints on the rear bench seats
individually
(Y page 109). The wind deflector
remains in its current position. Installing and removing the AIRCAP
wind screen
Preparation You will need a 4 mm Allen key to install/
remove the AIRCAP wind screen. Before installing or removing the AIRCAP
wind screen:
X
Turn the SmartKey to position 2 in the
ignition lock.
X Open the folding roof fully ( Y page 90).
X Extend the head restraints in the rear
compartment fully (Y page 109).
Removing Bolts on the AIRCAP wind screen between the head
restraints in the rear compartment
X
Use the 4 mm hex-socket wrench to turn
the bolts on both sides counter-clockwise
by about 90° and loosen them.
X Pull the bolts out of the brackets on the
head restraints. X
Pull the AIRCAP wind screen out of the
guide rails in the direction of the arrow.
Make sure that you pull the AIRCAP wind
screen forwards slightly when doing so.98
Soft top (Cabriolet)
Opening/closing
The exterior lighting (except the parking/
standing lamps) switches off automatically if
you:
R
remove
the SmartKey from the ignition lock
R open the driver's door with the SmartKey
in position 0.
Automatic headlamp mode G
WARNING
If the light switch is set to Ã
and it is foggy,
snowing or there is poor visibility, the low-
beam headlamps will not come on
automatically. This could endanger you and
others. In such situations turn the light switch
to L.
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lighting at all times. 1W
Left-hand standing lamps
2X Right-hand standing lamps
3T Parking lamps, license plate and
instrument cluster lighting
4Ã Automatic headlamp mode,
controlled by the light sensor
5L Low-beam/high-beam headlamps
BR Rear fog lamp
CN Fog lamps (only vehicles with front
fog lamps) Ã is the favored light switch setting. The
light setting is automatically selected
according to the brightness of the ambient
light
(exception: poor visibility due to weather
conditions such as fog, snow or spray):
R SmartKey in position 1 in the ignition lock:
the parking lamps are switched on or off
automatically depending on the brightness
of the ambient light.
R With the engine running: if you have
activated the daytime running lamps
function via the on-board computer, the
daytime running lamps or the low-beam
headlamps and parking lamps are switched
on or off automatically depending on the
brightness of the ambient light.
X To switch on automatic headlamp
mode: turn the light switch to Ã.
Only for Canada:
The daytime running lamps improve the
visibility of your vehicle during the day. The
daytime
running lamps function is required by
law in Canada. It cannot therefore be
deactivated.
When the engine is running and the vehicle is
stationary: if you move the selector lever from
a drive position to P, the daytime running
lamps/low-beam headlamps go out after
three minutes.
When the engine is running, the vehicle is
stationary and in high ambient light
brightness: if you turn the light switch
to T, you turn on the daytime running
lamps and parking lamps.
If the engine is running and you turn the light
switch to L, the manual settings take
precedence over the daytime running lamps.
USA only:
The daytime running lamps improve the
visibility of your vehicle during the day. To do
this, the daytime running lamps function must
be switched on using the on-board computer
(Y page 224).
If the engine is running and you turn the light
switch to T or L, the manual settings Exterior lighting
121
Lights and windshield wipers Z