Problems with the SmartKey
Problem Possible causes/consequences and
M Solutions
You cannot lock or
unlock the vehicle
using the SmartKey. The SmartKey battery is discharged or nearly discharged.
X
Try again to lock/unlock the vehicle using the remote control
function of the SmartKey. Point the tip of the SmartKey at the
driver's door handle from close range and press the %or
& button.
If this does not work:
X Check the SmartKey battery (Y page 79) and replace it if
necessary (Y page 80).
X Lock (Y page 84) or unlock (Y page 84) the vehicle using
the mechanical key. The SmartKey is faulty.
X
Lock (Y page 84) or unlock (Y page 84) 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 is in standby mode because the vehicle has not been
unlocked for a long time.
X
Pull the door handle twice and then insert the SmartKey into the
ignition lock. There is interference from a powerful source of radio waves.
X
Lock/unlock the vehicle using the remote control function of
the SmartKey. Point the tip of the SmartKey at the driver's door
handle from close range and press the %/& button. There is a malfunction with KEYLESS-GO.
X
Lock/unlock the vehicle using the remote control function of
the SmartKey. Point the tip of the SmartKey at the driver's door
handle from close range and press the %/& button.
X Have KEYLESS-GO checked at a qualified specialist workshop.
If this does not work:
X Check the SmartKey battery (Y page 79) and replace it if
necessary (Y page 80).
X Lock (Y page 84) or unlock (Y page 84) the vehicle using
the mechanical key. You have lost a
SmartKey. 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. SmartKey
81Opening/closing Z
Problem Possible causes/consequences and
M Solutions
You 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 303).
or
X Jump-start the vehicle (Y page 304).
or
X Consult a qualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. Ad
oor 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. Doors
Important safety notes
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. Achild'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. G
WARNING
Do not carry heavy or hard objects in the
passenger compartment or cargo
compartmentu nless they are firmly secured
in place. 82
DoorsOpening/closing
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 Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked. You can only open
the rear doors from inside the vehicle if they
are not secured by the child-proof locks
(Y page 67).
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 72). X
Front door: pull door handle ;.
If the door is locked, locking knob :pops
up. The door is unlocked and can be
opened.
X Rear door: pull up locking knob :on the
relevant rear door.
The rear door is unlocked and can be
opened. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside. The buttons are located on
both front doors. X
To unlock: press button :.
X To lock: press button ;.
If the front-passenger door is closed, the
vehicle locks.
You cannot unlock the vehicle centrally from
the inside if the vehicle has been locked with
the SmartKey or KEYLESS-GO.
The central locking/unlocking button does
not lock or unlock the fuel filler flap.
You can open a front door from inside the
vehicle even if it has been locked.
If the vehicle has been locked using the
locking button for the central locking, or has
been locked automatically, and a door is
opened from the inside:
R the vehicle will be fully unlocked if it had
previously been fully unlocked
R only the door which has been opened form
the inside is unlocked if only the driver's
door had been previously unlocked Automatic locking feature
The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning. Doors
83Opening/closing Z
You could therefore be locked out if:
R
the vehicle is being pushed.
R the vehicle is being towed.
R the vehicle is being tested on a
dynamometer.
You can switch the automatic locking
function on and off using the on-board
computer (Y page 209). Unlocking the driver's door
(mechanical key)
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unlocka nd
open the driver's door, the anti-thef talarm
system will be triggered ( Ypage 72).
X Take the mechanical key out of the
SmartKey (Y page 78).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key counter-clockwise
as far as it will go to position 1and hold
it in this position.
X Pull the door handle beyond the first
resistance.
The locking knob pops up.
The door is unlocked.
X Turn the mechanical key back and remove
it.
X Pull the door handle again.
X Insert the mechanical key into the
SmartKey. Locking the vehicle
If the vehicle can no longer be locked with the
SmartKey, you can lock it by taking the
following steps.
X Close the front-passenger door, the rear
door on the front-passenger side and the
tailgate.
X Open the driver’s door and the rear door on
the driver’s side.
X Press the locking button on the driver’s
door (Y page 83).
The locking knobs in the front-passenger
door and in the rear doors drop down.
X Press down the locking knobs in the front-
passenger and rear doors manually, if
necessary (Y page 83).
X Close the driver's door fro mthe outside.
X Press down the locking knob of the driver's
door by reaching in through the open rear
door.
i Make sure that you have the SmartKey on
your person and that it has not been left in
the vehicle.
X Close the rear door on the driver’s side.
X Make sure that the doors and the tailgate
are locked.
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed. 84
DoorsOpening/closing
Cargo compartment
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and loc kthe 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. Achild'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. G
WARNING
Do not carry heavy or hard objects in the
passenger compartment or cargo
compartmentu nless 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 G
WARNING
Make sure the tailgate is closed when the
engine is running and whiled riving. Among
other dangers, deadly carbon monoxide (CO)
gases may enter vehicle interior resulting in
unconsciousness and death.
! The tailgate swings upwards and to the
rear when opened.T herefore, make sure
that there is sufficient clearance above and
behind the tailgate.
i Tailgate opening dimensions
(Y page 357).
Do not leave the SmartKey in the cargo
compartment. You could otherwise lock
yourself out.
Vehicles without the EASY-PACK
tailgate: the tailgate can be:
R opened and closed manually from outside
R opened manually from inside
For vehicles with the EASY-PACK tailgate
you can:
R close the tailgate manually from outside
R open and close the tailgate automatically
from outside
R open and close the tailgate automatically
from inside
R open the tailgate manually from inside
R limit the opening angle of the tailgate Opening/closing from outside
Opening Cargo compartment
85Opening/closing Z
X
Press the %button on the SmartKey.
X Pull handle :.
X Raise the tailgate.
Vehicles with the EASY-PAC Ktailgate: if
you pull handle :and then release it, the
tailgate opens automatically.
Closing G
WARNING
To prevent possible personal injury, always
keep hands and fingers away from the cargo
compartment opening whe nclosing the
tailgate. Be especially careful when small
children are around. X
Pull the tailgate down using recess :.
X Allow the tailgate to drop into the lock.
X Loc kthe vehicle if necessary with
the & 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
outside
Important safety notes G
WARNING
Make sure the tailgate is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO) gases may enter vehicle interior resulting in
unconsciousness and death.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and
behind the tailgate.
i Tailgate opening dimensions
(Y page 357).
Opening the tailgate automatically You can open the tailgate automatically using
the SmartKey or the handle in the tailgate.
X
Press and hold the Fbutton on the
SmartKey until the tailgate opens.
or
X If the tailgate is unlocked, pull the handle
and let it go again immediately.
Closing the tailgate automatically G
WARNING
Monitor the closing procedure carefully to
make sure no one is in danger of being
injured. To prevent possible personal injury,
always keep hands and fingers away from the
cargo compartmento peningwhen closing the
tailgate. Be especially careful when small
children are around. To stop the closing
procedure, do one of the following:
R Press or pull the remote tailgate opening/
closing switch on the driver's door.
R Press the tailgate closing switch.
R Press the KEYLESS-GO locking/closing
switch.
R Pull outside handle on the tailgate.
R When no SmartKey is inserted in the starter
switch (vehicles with KEYLESS-GO: Make
sure the vehicle's on-board electronics
have status 0): Press button Fon the
SmartKey. 86
Cargo compartmentOpening/closing
Closing button and locking button (example:
vehicle with the EASY-PACK tailgate and KEYLESS-
GO)
X
To close: press closing button :on the
tailgate.
or
X Press and hold the Fbutton on the
SmartKey until the tailgate closes.
Vehicles with the EASY-PACK system tailgate
and KEYLESS-GO :you can simultaneously
close and lock the tailgate.
X Press locking button ;on the tailgate.
If a KEYLESS-GO key is detected outside
the vehicle, the tailgate closes and locks.
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.
i If a KEYLESS-GO key is detected in the
cargo compartment, the tailgate will not
lock. Opening/closing automatically from
inside
Important safety notes G
WARNING
Maintain sight of the area around the rear of
the vehicle while operating the tailgate with
the door-mounted remote tailgate switch.
Monitor the opening procedure carefully to make sure no one is in danger of being
injured.
To interrupt the opening procedure, press or
pull the door-mounted remote tailgate switch.
When the SmartKey is not inserted in the
starter switch (vehicles with KEYLESS-GO:
Make sure the vehicle's on-board electronics
have status
0): Press button Fon the
SmartKey. G
WARNING
Maintain sight of the area around the rear of
the vehicle while operating the tailgate with
the door-mounted remote tailgate switch.
Monitor the closing procedure carefully to
make sure no one is in danger of being
injured.
To interrupt the closing procedure, press or
pull the door-mounted remote tailgate switch. G
WARNING
To prevent possible personal injury, always
keep hands and fingers away from the cargo
compartment opening when closing the
tailgate. Be especially careful when small
children are around. G
WARNING
Make sure the tailgate is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases may enter vehicle interior resulting in
unconsciousness and death.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and
behind the tailgate.
i Tailgate opening dimensions
(Y page 357). Cargo compartment
87Opening/closing Z
X
To open the tailgate: pull the handle on
the tailgate.
X To stop the opening procedure at the
desire dposition: press the closing button
(Y page 86 )inthe tailgate or pull the handle
on the outside of the tailgate again.
X To store the position: press and hold the
closing button in the tailgate until you hear
a short tone.
The opening angle limiter is activated. The
tailgate will now stop in the stored position
when opening.
Deactivating X
Press and hold the closing button
(Y page 86) in the tailgate until you hear
two short tones. Side windows
Important safety notes
G
WARNING
When opening or closing the windows, make
sure there is no danger of anyone being
harmed by the opening/closing procedure.
The door windows are equipped with the
express operation and automatic reversal
function. If in express operation mode a door
window encounters an obstruction that
blocks its path, the automatic reversal
function will stop the door window and open
it slightly.
The door windows operate differently when
the switch is pulled and held. See the "Closing
when a door window is blocked" section in
this chapter for details.
The closing of a door window can be
immediately halted by releasing the switch or,
if the switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
The closing of the hinged quarter windows can
be immediately halted by pressing or pulling
the switch. If a window encounters an obstruction that
blocks its path in a circumstance where you
are closing the windows by pressing and
holding button
&on the SmartKey or by
pressing and holding the lock button (vehicles
with KEYLESS-GO) on an outside door handle,
the automatic reversal function will not
operate.
Activate the override switch when children
are riding in the back seats of the vehicle. The
children may otherwise injure themselves,
e.g. by becoming trapped in the window
opening. G
WARNING
Do not keep any part of your body up against
the window pane when opening a window. The
downward motion of the pane may pull that
part of your body down between the window
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
each door for the corresponding side window.
The switches on the driver's door take
precedence. :
Front left
; Front right Side windows
89Opening/closing Z