MERCEDES-BENZ E-CLASS CABRIOLET 2015 Manual Online

X
Repeatedly tap the key against your palm until
battery =falls 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 contamination.
X Insert the front tabs of battery compartment
cover :into the housing and then press to
close it.
X Insert emergency key element ;into the key
(Y page 76).
X Check the function of all key buttons on the
vehicle. 78
KeyOpening and closing

Problems with the key
Problem
Possible causes/consequences and
M
MSolutions You can no longer lock or
unlock the vehicle using
the key. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 77) and replace if necessary
(Y page 77).
If this does not work: X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element. The key is faulty.
X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element.
X Have the key checked at a qualified specialist workshop. You can no longer lock or
unlock the vehicle using
KEYLESS-GO. KEYLESS-GO has been deactivated.
X Reactivate KEYLESS-GO (Y page 75). The key battery is discharged or nearly discharged.
X Check the key battery (Y page 77) and replace if necessary
(Y page 77).
If this does not work: X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element. There is a fault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of the
key.
X Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle cannot be locked/unlocked even using the remote con-
trol function:
X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. Key
79Opening and closing Z

Problem
Possible causes/consequences and
M
MSolutions The engine cannot be
started using the 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 312).
or X Jump-start the vehicle (Y page 313).
or X Consult a qualified specialist workshop. Only for vehicles with
manual transmission:
The engine cannot be
started using the key. The steering lock is mechanically blocked.
X Remove the key 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 key is in the
vehicle. 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 key in the ignition lock. You have lost a key. X
Have the key 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 emer-
gency key element. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. Doors
Important safety notes
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury.
Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle. If the vehicle has been locked from the outside,
the double lock function is activated as stand-
ard. It is then not possible to open the doors
from inside the vehicle. You can deactivate the
double lock function by deactivating the interior
motion sensor (Y page 73). The doors can then
be opened from the inside after the vehicle has
been locked from the outside. The anti-theft
alarm system is triggered if the door is opened
from the inside. Switch off the alarm
(Y page 71).
All countries: 80
DoorsOpening and closing

G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncoming traffic
R operate vehicle equipment and become
trapped, for example
In addition, the children could also set the
vehicle in motion, for example, if they:
R release the parking brake
R shift the automatic transmission out of park
position P or shift manual transmission into
neutral
R start the engine
There is a risk of an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children and animals unattended in the vehi-
cle. Keep the keys out of the reach of children. Unlocking and opening the doors
from the inside
! The side windows will not open/close if the
battery is discharged or if the side windows
have iced up. It will then not be possible to
close the door. Do not attempt to force the
door to close. You could otherwise damage
the door or the side window.
For all countries except the United Kingdom: you can open a door from inside the vehicle evenif it has been locked.
If the vehicle has previously been locked from
the outside, opening a door from the inside will
trigger the anti-theft alarm system. Switch off
the alarm (Y page 71).
Only for the United Kingdom: if the vehicle
has been locked with the key from the outside,
the double lock function is activated as stand-
ard. It is then not possible to open the doors
from inside the vehicle. You can deactivate the
double lock function by deactivating the interior
motion sensor (Y page 72). The doors can then
be opened from the inside after the vehicle has
been locked from the outside. The anti-theft
alarm system is triggered if the door is opened from the inside. Switch off the alarm
(Y
page 71).
All countries: X
Pull door handle ;.
If the door is locked, locking knob :pops up.
The door is unlocked and can be opened.
When a door is opened, the side window on that
side opens slightly. When the door is closed, the
side window is raised again. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle from
the inside. The switches are on the driver's door. X
To unlock: press button :.
X To lock: press button ;.
If all the doors are closed, the vehicle locks.
This does not lock or unlock the fuel filler flap.
If the vehicle has been locked from the outside,
it cannot be centrally unlocked from the inside.
For all countries except the United Kingdom:
you can open a door from inside the vehicle even if it has been locked.
United Kingdom only: you can only open a
door from inside the vehicle if the double-lock Doors
81Opening and closing Z

function has been deactivated. You can deacti-
vate the double lock function by deactivating the
interior motion sensor (Y page 72).
For all countries: when a locked door is opened
from inside the vehicle, the previous unlocking
process will be observed if the vehicle has been:
R locked with the locking button for the central
locking or
R locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. Only the door which
has been opened from the inside is unlocked if
only the driver's door had been previously
unlocked. Automatic locking feature
X
To deactivate: press and hold button :for
about five seconds until a tone sounds.
X To activate: press and hold button ;for
about five seconds until a tone sounds.
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 turn-
ing.
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 also activate and deactivate the auto-
matic locking function using the on-board com- puter (Y page 225). Unlocking/locking the driver's door
using the emergency key element
i If you want to centrally lock the vehicle using
the emergency key element, begin by press-
ing the locking button for the interior locking
mechanism while the driver's door is open.
Then proceed to lock the driver's door using
the emergency key element. X
To unlock: turn the emergency key element
anti-clockwise as far as it will go to position
1.
X To lock: turn the emergency key element
clockwise as far as it will go to position 1.
Right-hand-drive vehicle: turn the emergency
key element in the opposite direction in both
cases.
If you use the emergency key element to unlock
and open the driver's door, the anti-theft alarm
system will be triggered. Switch off the alarm
(Y page 71). Boot
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the boot
lid is open when 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 boot lid. Never drive with the boot lid
open. 82
BootOpening and closing

!
The boot lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the boot lid.
The opening dimensions of the boot lid can be
found in the "Vehicle data" section
(Y page 342).
Stow luggage or loads preferably in the boot.
Observe the loading guidelines (Y page 272).
Do not leave the key in the boot. You could oth-
erwise lock yourself out.
The boot lid can be:
R opened and closed manually from outside
R opened automatically from inside
R locked separately
R unlocked with the emergency key element Opening/closing from the outside
Opening X
Press the %button on the key.
X Pull handle :.
X Raise the boot lid.
Closing X
Pull the boot lid down using recess :.
X If necessary, lock the vehicle with the &
button on the key (Y page 74) or with KEY-
LESS-GO (Y page 75).
If a KEYLESS-GO key is detected in the boot, the
boot lid cannot be locked. It then opens again. Opening automatically from inside
Important safety notes G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the boot
lid is open when 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 boot lid. Never drive with the boot lid
open.
Opening X
Pull remote boot lid operating switch :until
the boot lid opens.
You can open the boot lid from the driver's seat when the vehicle is stationary and unlocked.
The opening dimensions of the boot lid can be
found in the "Vehicle data" section
(Y page 342). Locking the boot separately
The separate boot locking function is only avail-
able in certain countries. Boot
83Opening and closing Z

You can lock the boot separately. If you then
unlock the vehicle centrally, the boot remains
locked and cannot be opened.
X Close the boot lid.
X Take the emergency key element out of the
key (Y page 76). X
Insert the emergency key element into the
boot lid lock as far as the stop.
X Turn the emergency key element clockwise
from position 1to position 2.
X Pull out the emergency key element.
X Insert the emergency key element into the
key. Unlocking the boot (emergency key
element)
! The boot lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the boot lid.
If the boot cannot be unlocked with the key or
KEYLESS-GO, use the emergency key element.
If you use the emergency key element to unlock
and open the boot lid, the anti-theft alarm sys-
tem will be triggered. Switch off the alarm
(Y page 71).
X Take the emergency key element out of the
key (Y page 76).
X Insert the emergency key element into the
boot lid lock as far as the stop. X
Turn the emergency key element from posi-
tion 1anti-clockwise as far as it will go to
position 2. When doing so, also pull the boot
lid handle.
The boot is unlocked.
X Turn the emergency key element back to posi-
tion 1and remove it.
X Insert the emergency key element into the
key (Y page 76). Side windows
Important safety notes
G
WARNING
While opening the side windows, body parts
could become trapped between the side win- dow and the door frame as the side window
moves. There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
body becomes trapped, release the switch or pull the switch to close the side window again. G
WARNING
While closing the side windows, body parts in the closing area could become trapped. There is a risk of injury.
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. 84
Side windowsOpening and closing

G
WARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is a risk of injury.
Activate the override feature for the rear side
windows. When leaving the vehicle, always
take the key with you and lock the vehicle.
Never leave children unattended in the vehi-
cle. Side window reversing feature
The side windows are equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts a side window during the closing
process, the side window opens again automat-
ically. The automatic reversing feature is, how-
ever, only an aid and is no substitute for your
attention when closing a side window. G
WARNING
The reversing function does not react:
R to soft, light and thin objects, e.g. small fin-
gers
R over the last 4 mm of the closing movement
R during resetting
R when closing the side window again man-
ually immediately after automatic reversing
This means that the reversing function cannot prevent someone being trapped in these sit-
uations. There is a risk of injury.
When closing make sure that no parts of the
body are in the closing area. If someone
becomes trapped, press the switch to open
the side window again. Opening and closing the side win-
dows
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 corresponding side window.
The switches on the driver's door take prece-
dence. :
Front left
; Front right
= Rear right
? Rear left
X Turn the key 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 and hold the corre-
sponding switch.
X To close fully: pull the corresponding switch
beyond the pressure point.
Automatic operation is started.
X To interrupt automatic operation: press/
pull the corresponding switch again.
You can use automatic operation when opening or closing the front side windows. To do so,
press or pull the switch to just beyond the point
of resistance in the corresponding direction.
You can stop automatic operation by pressing or pulling again.
You can continue to operate the side windows
after switching off the engine or removing the
key. This function remains active for 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 61). Side windows
85Opening and closing Z

Opening and closing all side windows
Using the switch on the centre console G
WARNING
When a side window is closed, body parts may become trapped in the closing range. There is a risk of injury.
Ensure that there are no body parts in the
closing range of the window when closing it. If
somebody becomes trapped, release the but- ton immediately or press the lower section of
the button to open the side window again.
Using the switch on the centre console, you can
close all side windows simultaneously.
X Open the cover on the lower centre 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 key G
WARNING
While closing the side windows, body parts in the closing area could become trapped. There is a risk of injury.
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. You can use the key to open or close all side
windows simultaneously. The key must be near
the door handle.
X Close the soft top (Y page 89).
X Open the boot separator (Y page 94).
X To open all side windows: press the%
switch on the key until the side windows are
fully opened.
X To interrupt the opening procedure:
release the
%switch.
X To close all side windows: press the&
switch on the key until the side windows are
fully closed.
X To interrupt the closing procedure: release
the & switch.
Convenience closing with KEYLESS-GO G
WARNING
When using convenience closing, you could
become trapped within the sweep of the clos- ing window. There is a risk of injury.
Monitor the entire closing procedure when
using convenience closing. When closing,
make sure that no one has any parts of the
body within the closing area.
If someone is trapped, proceed as follows:
X Release recessed sensor surface on the door
handle.
X Immediately pull and hold the door handle
and keep the door handle pulled.
The side windows open.
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. 86
Side windowsOpening and closing

X
Touch recessed sensor surface :on the
door handle until the side windows are fully
closed.
i Make sure you only touch recessed sensor
surface :.
X To interrupt convenience closing: release
recessed sensor surface :on 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 doors.
X Turn the key 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 85).
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 85).
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 above again. Side windows
87Opening and closing Z