
Problem
Possible causes/consequences and
0050
0050Solutions The engine can no lon-
ger 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 555).
or
X Jump-start the vehicle (Y page 557).
or
X Consult a qualified specialist workshop. The engine can no lon-
ger be started using
KEYLESS-GO. The
SmartKey is in the vehi-
cle. The vehicle is locked.
X Unlock the vehicle 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. Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle, they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. Unlocking and opening doors from
the inside
! The side windows will not open/close if
the battery is discharged or if the side win- dows have iced up. It will then not be pos-
sible to close the door. Do not attempt to
force the door closed. You could otherwise
damage the door or the side window.
You can open a door from inside the vehicle
even if it has been locked.
If the vehicle was previously locked with the
SmartKey or with KEYLESS-GO, opening the
vehicle from the inside will activate the anti-
theft alarm system. Switch off the alarm
(Y page 80). 88
DoorsOpening and closing

X
Pull door handle 0044.
If the door is locked, locking knob 0043pops
up. The door is unlocked and can be
opened.
i When a door is opened, the side window
on that side opens slightly. When the door
is closed, the side window closes again. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside. For example, you can unlock
the front-passenger door from the inside or
lock the vehicle before you pull away. X
To unlock: press button 0043.
X To lock: press button 0044.
If the front-passenger door is closed, the
vehicle locks.
The central locking/unlocking button does
not lock or unlock the fuel filler flap or the
stowage compartments, such as the glove
box. You cannot unlock the vehicle centrally from
the inside if the vehicle has been locked with
the SmartKey or KEYLESS-GO.
You can open a door from inside the vehicle
even if it has been locked.
If a locked door is opened from the inside, the
previous unlock status of the vehicle will be
taken into consideration if:
R the vehicle was locked using the locking
button for the central locking, or
R if the vehicle was locked automatically
The vehicle will be fully unlocked if it had pre- viously been fully unlocked. If only the driver's
door had been previously unlocked, only the
door which has been opened from the inside
is unlocked. Automatic locking feature
0043
Disarming
0044 Arming
X To disarm: press and hold button 0043for
about five seconds until a tone sounds.
X To arm: press and hold button 0044for about
five seconds until a tone sounds.
i If you press one of the two buttons and do
not hear a tone, the relevant setting has
already been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning. Doors
89Opening and closing Z

When closing make sure that no parts of the
body are in the closing area. If somebody
becomes trapped, release the switch or press the switch to open the side window again. G
WARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle. Side window reversing feature
The front side windows are equipped with an automatic reversing feature. If a solid object
blocks or restricts one of the front side win-
dows from traveling upwards during the auto-
matic closing process, the side window opens
again automatically. During the manual clos-
ing process, the side window only opens
again automatically after the corresponding
switch is released. However, the automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying
attention when closing a side window. G
WARNING
The reversing feature does not react:
R to soft, light and thin objects, e.g. small fin-
gers
R while resetting
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch
to open the side window again. Opening and closing the side win-
dows
Opening and closing the side windows
in the front The switches for the side windows are located
on the driver's door. There is also a switch for
the front-passenger side window on the front- passenger door.
The switches on the driver's door take prec-
edence. 0043
Left
0044 Right
X Turn the SmartKey to position 1or 2in the
ignition lock.
X To open manually: press and hold the cor-
responding button.
X To open fully: press the button beyond the
point of resistance and release it.
Automatic operation is started.
X To close manually: pull the corresponding
button and hold it.
X To close fully: pull the button beyond the
point of resistance and release it.
Automatic operation is started.
X To interrupt automatic operation: press
or pull the corresponding button again.
i You can continue to operate the side win-
dows after you switch off the engine. This
function is available for up to five minutes
or until the driver's or front-passenger door
is opened. Side windows
97Opening and closing Z

X
To close all side windows: press the
0037 button on the SmartKey until the side
windows are fully closed.
X To interrupt the closing procedure:
release the 0037button.
Convenience closing with KEYLESS-GO G
WARNING
When using the convenience closing feature,
parts of the body could be trapped in the clos- ing area when a side window is being closed. 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.
If someone is trapped: X Release the recessed sensor surface on the
door handle immediately.
X Pull the door handle immediately and hold
it until the side windows open again.
With KEYLESS-GO you can close all side win-
dows simultaneously. The KEYLESS-GO key
must be outside the vehicle. All the doors
must be closed. X
Touch recessed sensor surface 0043on the
door handle until the side windows are fully
closed.
i Make sure you only touch recessed sen-
sor surface 0043. X
Make sure that all the side windows are
closed.
X To interrupt convenience closing:
release recessed sensor surface 0043on the
door handle. 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 1or 2in the
ignition lock.
X Pull the corresponding switch on the door
control panel until the side window is com- pletely closed. (Y page 97)
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 win-
dow is completely closed (Y page 97).
X Hold the switch for an additional second.
X If the corresponding side window remains
closed after the button has been released,
the side window has been reset correctly. If
this is not the case, repeat the steps aboveagain. Side windows
99Opening and closing Z

Opening and closing using the Smart-
Key
Important safety notes G
WARNING
When opening or closing the roof, body parts could be trapped by, for example, the roof
mechanism, trunk lid or side windows. There
is a risk of injury.
When raising or lowering the roof, make sure
that no body parts are in the vicinity of moving
components. If someone becomes trapped,
release the button.
Opening and closing X
Close the trunk partition (Y page 102).
X Close the trunk lid (Y page 91).
X Vehicles without KEYLESS-GO: point the
tip of the SmartKey at the door handle on
the driver's door.
X Vehicles with KEYLESS-GO: the Smart-
Key must be within 6 ft (2 m) of the vehicle.
X To open: press and hold the 0036button
on the SmartKey until the roof is fully
opened.
The roof and the rear side windows open.
The front side windows close.
X To interrupt the opening procedure:
release the 0036button.
X To open the front side windows: press
and hold the 0036button on the SmartKey
again.
X To close: press and hold the 0037button
on the SmartKey until the roof is fully
closed.
The roof and the side windows close.
X To interrupt the closing procedure:
release the 0037button.
i When the roof is closed and the trunk par-
tition is open, the roof cannot be opened
using the SmartKey functions. Instead, all
of the side windows open or close simulta-
neously (Y page 98). Locking the roof again
Important safety notes G
WARNING
If you do not fully open/close the soft top, the soft-top hydraulics depressurize after a short
time. This causes the soft top to lower unex-
pectedly and may cause you or others to be
trapped. There is a risk of injury.
Always open or close the soft top completely.
The roof is not locked if:
R the 0059 symbol and the Vario-Roof Vario-Roofin
in
Operation
Operation message appear in the multi-
function display.
R the 0059 symbol and the Open/Close
Open/Close
Vario-Roof Completely
Vario-Roof Completely message
appear and you hear a warning tone.
R you hear a warning tone for up to 10 sec-
onds when pulling away or while driving.
Locking You can lock the roof again if it is not locked
fully.
X Pull over and stop the vehicle safely as soon
as possible, paying attention to road and
traffic conditions.
X Make sure that the SmartKey is in position
2 in the ignition lock.
X Press the roof switch (Y page 101). Trunk partition
General notes !
To avoid damaging the roof or luggage
when folding back the roof, you should:
R only load the trunk to below the trunk
partition
R not place any objects on or in front of the
trunk partition 102
RoofOpening and closing

MAGIC SKY CONTROL
General notes MAGIC SKY CONTROL is a glass roof, the
transparency of which can be changed by
applying electrical voltage.
MAGIC SKY CONTROL can be switched
between darkened and transparent states.
i MAGIC SKY CONTROL darkens automat-
ically when you turn the SmartKey to posi-
tion 0in the ignition lock or remove the
SmartKey.
Risk of electric shock G
DANGER
MAGIC SKY CONTROL operates using high
voltage. If the trim behind the overhead con-
trol panel is damaged or removed, electrical
components will be exposed. If you touch
these components, you could get an electric
shock. There is a risk of fatal injury.
R Never remove the trim behind the overhead
control panel.
R If the trim is damaged, never touch the
electrical components behind it.
R Always have work on the MAGIC SKY CON-
TROL carried out at a qualified specialist
workshop.
The electrical components of MAGIC SKY
CONTROL are protected by a paneling behind the overhead control panel.
The MAGIC SKY CONTROL control unit is
marked with a yellow warning sticker that
warns you of high voltage. The electric cables
of the high-voltage section are colored
orange. Operating MAGIC SKY CONTROL X
Turn the SmartKey to position 1or 2in the
ignition lock.
MAGIC SKY CONTROL switches to the sta- tus it was set to before the engine was
switched off.
X To change the degree of transparency:
press button 0043.
i At sub-zero temperatures, the change is
slower and uneven. The entire process may
take some time. Roof
105Opening and closing Z

Problems with the roof
Problem
Possible causes/consequences and
0050
0050Solutions The roof will not open or
close. The trunk partition is not in place.
X Close the trunk partition (Y page 103). The trunk lid is open.
X Close the trunk lid (Y page 92). The on-board voltage is too low.
X Leave the engine running. The roof has been opened and closed several times in a row. The
roof drive has been automatically deactivated.
You can open and close the roof again after approximately ten
minutes.
X Switch off the ignition and turn it back on.
X Repeat the opening or closing procedure. The automatic roof mechanism is faulty.
X Consult a qualified specialist workshop. 106
RoofOpening and closing

Seats
Important safety notes
G
WARNING
Children could become trapped if they adjust the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle.
The seats can still be adjusted when there is
no SmartKey in the ignition lock. G
WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(Y page 56) and "Children in the Vehicle"
(Y page 68). G
WARNING
If you adjust the seat height carelessly, you or other vehicle occupants could be trapped andthereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem. G
WARNING
If head restraints are not installed and adjus-
ted correctly, they cannot provide protection
as intended. There is an increased risk of
injury in the head and neck area, e.g. in the
event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head restraint supports the back of the head at
about eye level.
G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, steering wheel or
mirrors and fasten your seat belt before start- ing the engine.
! To avoid damage to the seats and the seat
heating, observe the following information:
R keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools. The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating mate- rials, e.g. blankets, coats, bags, seat cov-
ers, child seats or booster seats.
! To avoid damage to the seats and the seat
heating, observe the following information:
R keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats. Seats
109Seats, steering wheel and mirrors Z