2017 MERCEDES-BENZ E-Class CABRIOLET engine

SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart 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.
GWARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident.
Do not attach any heavy or large objects to the
SmartKey. Remove any bulky key rings before
inserting the SmartKey into the ignition lock.
!Keep the SmartKey away from strong mag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. a mobile phone
or another SmartKey.
Rwith metallic objects, e.g. coins or metal foil.
Rinside metallic objects, e.g. a metal case.
This can affect the functionality of the Smart- Key.
SmartKey functions
:& To lock the vehicle
;FTo unlock the trunk lid
=%To unlock the vehicle
XTo unlock centrally: press the%button.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
Rthe vehicle is locked again.
Ranti-theft protection is reactivated.
XTo lock centrally: press the&button.
The SmartKey centrally locks/unlocks:
Rthe doors
Rthe trunk lid
Rthe fuel filler flap
The turn signals flash once when unlocking and
three times when locking.
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer (
Ypage 200).
When it is dark, the surround lighting also comes
on if it is activated in the on-board computer
(
Ypage 199).
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a KEY-
LESS-GO key in the vehicle (
Ypage 130).
Locking/unlocking centrally
You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry the
SmartKey with you. You can combine the func-
SmartKey73
Opening and closing
Z

tions of KEYLESS-GO with those of a conven-
tional SmartKey. Unlock the vehicle by using
KEYLESS-GO, for instance, and lock it using the
&button on the SmartKey.
When locking or unlocking with KEYLESS-GO,
the distance between the SmartKey and the cor-
responding door handle must not be greater
than 3 ft (1 m).
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example:
Rwhen the external door handles are touched
Rwhen starting the engine
Rwhile the vehicle is in motion
XTo unlock the vehicle: touch the inner sur-
face of the door handle.
XTo lock the vehicle: touch sensor sur-
face :.
XConvenience closing feature: touch
recessed sensor surface ;for an extended
period.
XTo unlock the trunk lid: pull the handle on
the trunk lid.
The vehicle only unlocks the trunk lid.
Deactivating and activating
If you do not intend to use a SmartKey for an
extended period of time, you can deactivate the
KEYLESS-GO function of the SmartKey. The
SmartKey will then use very little power, thereby
conserving battery power. For the purposes of
activation/deactivation, the vehicle must not be
nearby.
XTo deactivate: press the&button on the
SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
(
Ypage 76) flashes twice briefly and lights
up once, then KEYLESS-GO is deactivated.
XTo activate: press any button on the Smart-
Key.
or
XInsert the SmartKey into the ignition lock.
KEYLESS-GO and all of its associated features
are available again.
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 travel
alone.
XTo change the setting: simultaneously press
the % and& buttons on the SmartKey
for approximately six seconds until the bat-
tery check lamp flashes twice (
Ypage 76).
If the setting of the locking system is changed
within the signal range of the vehicle, pressing
the & or% button:
Rlocks or
Runlocks the vehicle
The SmartKey now functions as follows:
XTo unlock: press the%button once.
XTo unlock centrally: press the%button
twice.
XTo lock centrally: press the&button.
74SmartKey
Opening and closing

ProblemPossible causes/consequences andMSolutions
The engine cannot be
started using the Smart-
Key.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 276).
or
XJump-start the vehicle (Ypage 278).
or
XConsult a qualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart 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 windows
have iced up. It will then not be possible to
close the door. Do not attempt to force the
door closed. You could otherwise damage the
door or the side window.
78Doors
Opening and closing

Unlocking/locking the driver's door
using the mechanical key
i
If you want to centrally lock the vehicle using
the mechanical key, begin by pressing the
locking button for the interior locking mech-
anism while the driver's door is open. Then
lock the driver's door using the mechanical
key.
XTo unlock: turn the mechanical key counter-
clockwise as far as it will go to position 1.
XTo lock:turn the mechanical key clockwise as
far as it will go to position 1.
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
(
Ypage 71).
Trunk
Important safety notes
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
!The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid. The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
(
Ypage 317).
You should preferably place luggage or loads in
the trunk. Observe the loading guidelines
(
Ypage 240).
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
The trunk lid can be:
Ropened and closed manually from outside
Ropened automatically from inside
Rlocked separately
Ropened with the emergency release button
Runlocked with the mechanical key
Opening/closing from outside
Opening
XPress the %button on the SmartKey .
XPull handle :.
XRaise the trunk lid.
Closing
80Trunk
Opening and closing

XPull the trunk lid down using recess:.
XIf necessary, lock the vehicle with the &
button on the SmartKey (Ypage 73) or with
KEYLESS-GO (Ypage 73).
If a KEYLESS-GO key is detected in the trunk, the
trunk lid cannot be locked and will open again.
Opening automatically from inside
Important safety notes
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
Opening
XPull 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.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
(
Ypage 317).
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.
XClose the trunk lid.
XTake the mechanical key out of the SmartKey
(Ypage 75).
XInsert the mechanical key into the trunk lid
lock as far as it will go.
XTurn the mechanical key clockwise from posi-
tion 1to position 2.
XRemove the mechanical key.
XInsert 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 Smart-
Key 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. Switch off the alarm
(
Ypage 71).
XTake the mechanical key out of the SmartKey
(Ypage 75).
XInsert the mechanical key into the trunk lid
lock as far as it will go.
Trunk81
Opening and closing
Z

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
The switches for all side windows are located onthe 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 prece-
dence.
:Front left
;Front right
=Rear right
?Rear left
XTurn the SmartKey to position 1or 2in the
ignition lock.
XTo open manually: press and hold the cor-
responding switch.
XTo open fully: press the switch beyond the
point of resistance and release it.
Automatic operation is started.
XTo close manually: pull and hold the corre-
sponding switch.
XTo close fully: pull the corresponding switch
beyond the pressure point.
Automatic operation is started.
XTo interrupt automatic operation: press/
pull the corresponding switch again.
You can start automatic operation when open-
ing 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.
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.
When the override feature for the side windows
is activated, the side windows cannot be oper-
ated from the rear (
Ypage 61).
Opening and closing all side windows
Using the switch on the center console
GWARNING
While opening the side windows, body parts in
the closing area could become trapped. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
somebody becomes trapped, release the
switch or press the switch down to open the
side window again.
You can use the switch on the center console to
close all side windows simultaneously.
XOpen the cover in the lower center console.
The switch for all side windows is under the
cover.
XTo open all side windows: press switch:
to the point of resistance.
XTo open all side windows fully: press
switch :beyond the point of resistance.
XTo close all side windows: pull switch:.
Side windows83
Opening and closing
Z

Opening/closing using the SmartKey
Important safety notes
GWARNING
When opening or closing the soft top, there is a risk that parts of the body could become
trapped by moving parts such as the roof
mechanism, the trunk lid, or the side win-
dows. There is a risk of injury.
When opening or closing the roof, make sure
that no parts of the body are in the vicinity of
moving parts. Release the switch if somebody
becomes trapped.
Opening and closing
The SmartKey must be near the door handle.
XTo open: press the %button in the Smart-
Key until the soft top is completely opened.
The Convertible Top in Operation
mes-
sage appears in the multifunction display. The
seat ventilation is switched on. The rear side
windows open.
XTo close: press the&button in the Smart-
Key until the soft top is completely closed.
The Convertible Top in Operation
mes-
sage appears in the multifunction display. The soft top and the side windows close.
Closing the soft top manually
Important safety notes
GWARNING
Closing the soft top manually is a complex,
technically challenging procedure which can
also be physically demanding. You or others
can become trapped. There is a risk of injury.
Where possible, have the soft top closed man-
ually at a qualified specialist workshop.
If the soft top cannot be closed automatically,
check the following points:
Ris the trunk partition engaged (Ypage 91)?
Rare the head restraints on the rear bench
seats extended?
Ris the trunk lid closed?
Ris 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 assis-
tance of another person.
Closing the soft top
XApply the parking brake.
XOpen the side windows.
XLower the head restraints automatically
(Ypage 98) or manually (Ypage 98).
XRemove the SmartKey from the ignition lock.
XOpen the trunk.
XTake the two straps out of the vehicle tool kit
(Ypage 270).
XTake the hex-socket wrench out of the Oper-
ator's Manual wallet and keep it with you.
XTurn rotary catch :counter-clockwise and
fold cover ;down.
Soft top87
Opening and closing
Z

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 automat-
ically.
AIRCAP cannot be extended or retracted if the
vehicle speed exceeds approximately 100 mph
(160 km/h).
Retracting AIRCAP
XTurn the SmartKey to position2in the ignition
lock.
XOpen the cover in the lower center console.
XPress 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 lowest
position simultaneously.
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 individ-
ually (
Ypage 98). 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:
XTurn the SmartKey to position 2in the ignition
lock.
XOpen the folding roof fully (Ypage 86).
XExtend the head restraints in the rear com-
partment fully (Ypage 98).
Removing
XUse the 4 mm Allen key to turn the bolts on
both sides counter-clockwise by about 90°
and loosen them.
XPull the bolts out of the brackets on the head
restraints.
XPull the AIRCAP wind screen out of the guide
rails in the direction of the arrow. Make sure
that you pull the AIRCAP wind screen for-
wards slightly when doing so.
Installing
XKeeping the AIRCAP wind screen horizontal,
guide it into the slot between the head
Soft top93
Opening and closing
Z