Page 49 of 228

When the ABS is malfunctioning, the wheels
may lock during hard braking, reducing
steering capability and extending the
braking distance.
G
WARNING
The ABS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking or steering efficiency
beyond that afforded by the condition of the
vehicle brakes and tires or the traction
afforded. The ABS cannot prevent
accidents, including those resulting from
excessive speed in turns, following
another vehicle too closely, or
hydroplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The
capabilities of an ABS equipped vehicle
must never be exploited in a reckless or
dangerous manner which could jeopardize
the user’s safety or the safety of others. Electronic Stability Program (ESP
®
)
Your vehicle is equipped with the
Electronic Stability Program (ESP®
). The
ESP ®
is operational as soon as the engine
is running and it monitors the vehicle’s
traction (force of adhesive friction
between
the tires and the road surface) and
handling.
The ESP ®
recognizes when a wheel is
spinning or if the vehicle starts to skid.
By applying brakes to the appropriate
wheel and by limiting the engine output,
the ESP ®
works to stabilize the vehicle. The
ESP ®
is especially useful while driving off
and on wet or slippery road surfaces. The
ESP ®
also stabilizes the vehicle during
braking and steering maneuvers.
The ESP ®
warning lamp ÷ in the
instrument cluster flashes when the ESP ®
is
engaged.
The ESP ®
warning lamp ÷ in the
instrument cluster comes on when you switch on the ignition. It goes out when the
engine is running.
Depending on the driving situation, the
ESP
®
R reduces the speed
R selectively brakes individual wheels
R equalizes
the speed of the driven wheels
R stabilizes the vehicle when braking
R assists you in evasive maneuvers on all
roads G
WARNING
If the ESP ®
warning lamp ÷ in the
instrument cluster flashes, proceed as
follows:
R While driving off, apply as little
throttle as possible.
R While
driving, ease up on the accelerator
pedal.
R Adapt your speed and driving style to the
prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP ®
cannot prevent accidents
resulting from excessive speed. G
WARNING
The ESP ®
cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded. The
ESP ®
cannot prevent accidents, including
those resulting from excessive speed in
turns, or hydroplaning. Only a safe,
attentive, and skillful driver can prevent
accidents. The capabilities of an ESP ®
equipped vehicle must never be exploited
in a reckless or dangerous manner which
could jeopardize the user’s safety or the
safety of others.
! Because the ESP ®
operates
automatically, the engine must be turned
off (ignition switched off) when the
parking brake is being tested on a brake
test dynamometer. Active braking action Driving safety systems
47
>> Safety. Z
Page 50 of 228

through the ESP
®
may otherwise seriously
damage the brake system which is not
covered by the smart Limited Warranty.
i The ESP ®
will only function properly if
you use wheels of the recommended tire
size (Y page 217). Hydraulic brake assistant
The hydraulic brake assistant operates in
emergency situations. If you apply the
brakes very quickly, the hydraulic brake
assistant automatically provides full
brake boost, thereby potentially reducing
the braking distance.
X Apply continuous full braking pressure
until
the emergency braking situation is
over.
The ABS will prevent the wheels from
locking.
When you release the brake pedal, the
brakes function again as normal. The
hydraulic brake assistant is then
deactivated. G
WARNING
When the hydraulic brake assistant is
malfunctioning, the brake system is still
functioning normally, but without the
additional
brake boost that would normally
be provided during an emergency braking
maneuver. Therefore, the braking distance
may increase. G
WARNING
The hydraulic brake assistant cannot
prevent the natural laws of physics from
acting on the vehicle, nor can it increase
braking
efficiency beyond that afforded by
the condition of the vehicle brakes and
tires or the traction afforded. The
hydraulic brake assistant cannot prevent
accidents, including those resulting from
excessive speed in turns, following
another vehicle too closely, or
hydroplaning. Only a safe, attentive, and skillful driver can prevent accidents. The
capabilities
of a hydraulic brake assistant
equipped vehicle must never be exploited
in a reckless or dangerous manner which
could jeopardize the user’s safety or the
safety of others. Activating the hazard warning flasher
after an emergency braking maneuver
If
you bring the vehicle to a complete stop
by strongly braking at a speed of more than
43 mph (70 km/h), the hazard warning
flasher comes on automatically as soon as
the vehicle is at a standstill. The hazard
warning flasher will remain on until it is
switched off using the hazard warning
flasher switch (Y page 69) or until the
speed of the vehicle has exceeded 6 mph
(10 km/h). Anti-theft systems
Electronic immobilizer
The electronic immobilizer prevents
unauthorized persons from starting your
vehicle.
When leaving the vehicle, always take the
key with you and lock the vehicle. The
engine can be started by anyone with a key
that is left inside the vehicle.
X Activating: Remove the key from the
starter switch.
X Deactivating: Insert the key in the
starter switch.
X Turn the key to starter switch position 1. Anti-theft warning system*
Once the anti-theft warning system has
been armed, a visual and audible alarm is
triggered when
R someone opens a door or the tailgate
R someone enters the vehicle’s interior 48
Anti-theft systems>> Safety.
* optional
Page 51 of 228

R
there is motion inside the vehicle
R someone attempts to raise the vehicle
The alarm will also be triggered when
unlocking and opening the driver’s door
with the key.
i The alarm will stay on, even if the
driver’s
door is immediately closed. For
canceling the alarm, see ( Y page 49).
Close the windows and the tailgate before
arming the alarm system. Make sure there
are no moving objects inside the vehicle. X
Arming: Lock the vehicle using the
remote control.
Warning system indicator lamp :
flashes rapidly. The anti-theft warning
system
arms after about 25 seconds. When
the anti-theft warning system is armed,
warning system indicator lamp :
flashes about every three seconds.
i You
can also arm the anti-theft warning
system by locking the vehicle without
using the remote control (Y page 176).
X Disarming: Unlock the vehicle using the
remote control.
The anti-theft warning system is
disarmed. Warning system indicator
lamp : stops flashing.
Canceling the alarm X
Insert the key in the starter switch.
X Turn the key to starter switch position 1.
or
X Press button # or * on the key. Tow-away alarm* and interior motion
sensor*
Once the anti-theft warning system has
been armed, a visual and audible alarm is
triggered when someone attempts to raise
the
vehicle or if motion is detected inside
the vehicle.
X Arming: Lock the vehicle using the
remote control.
The
tow-away protection and the interior
motion sensor are armed after about
25 seconds.
X Disarming: Unlock the vehicle using the
remote control.
The
tow-away protection and the interior
motion sensor are disarmed.
Canceling the alarm X
Insert the key in the starter switch.
X Turn the key to starter switch position 1.
or
X Press button # or * on the key.
Switching off tow-away protection and
interior motion sensor Switch off the tow-away protection and the
interior motion sensor when locking the
vehicle and
R
transporting the vehicle,
R board, e.g. a ferry or auto train,
R there are people or animals in the
vehicle,
R the side windows remain open.
This prevents any false alarm. Anti-theft systems
49
>> Safety.
* optional Z
Page 52 of 228
X
Remove the key from the starter switch.
X Press switch : within 60 seconds.
Indicator lamp ; comes on.
X Exit the vehicle.
X Lock the vehicle using the remote
control.
i The tow-away protection and the
interior motion sensor remain switched
off until you lock your vehicle again. 50
Anti-theft systems>> Safety.
Page 53 of 228
>> Controls.Opening and closing
.......................... 52
Starter switch positions .....................57
Seats .............................................. 58
Mirrors ........................................... 61
Seat belts ........................................ 62
Lighting ......................................... 64
Windshield wipers ............................ 70
Soft top system (cabriolet only)
............ 72
Side windows .................................... 77
Driving and parking .......................... 78
Transmission ................................... 82
Instrument cluster ............................. 86
Control system* ................................ 93
Audio system* .................................. 98
Driving systems ............................... 100
HVAC (Heating, Ventilation, Air Con-
ditioning) ...................................... 102
Loading and storing ......................... 107
Useful features ................................ 113
Page 54 of 228

Opening and closing
Key
Key with remote control
:
* Lock button
; $ Opening the retractable soft top 6
/
unlocking the upper tailgate 7
= # Unlock button
The remote control centrally locks and
unlocks:
R the driver’s door
R the fuel filler flap
R the passenger door
R the upper tailgate G
WARNING
When leaving the vehicle, always remove the
key from the starter switch, take it with
you, and lock the vehicle. Do not leave
children
unattended in the vehicle, or with
access to an unlocked vehicle. It is
possible for children to open a locked door
from the inside, which could result in an
accident and/or serious personal injury.
! To prevent possible malfunction, avoid
exposing the remote control to high
levels of electromagnetic radiation.
! If you can no longer lock or unlock the
vehicle with the remote control, the
batteries in the remote control are discharged, or the remote control is
malfunctioning.
R
Check the batteries in the remote
control
and replace them if necessary.
R If you do not have a spare transmitter
battery at hand, use the key to open the
driver’s door and the fuel filler flap.
If the remote control is malfunctioning,
contact an authorized smart center.
i USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful
interference, and
2. this device must accept any
interference received, including
interference that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
The product label with FCC ID and IC
certification number can be found in the
battery case.
i Canada only:
This device complies with RSS‑210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause
interference, and
2. this device must accept any
interference received, including
interference that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
The product label with FCC ID and IC
certification number can be found in the
battery case.
6 cabriolet only.
7 coupé only. 52
Opening and closing
>> Controls.
Page 55 of 228

!
The remote control has an operating
range
of approximately 50 ft (15 meters).
This can fluctuate greatly as a
consequence of local conditions
(reflective or absorbing objects) and
interference emitted by other radio
transmission systems. Similarly, the
operating range fluctuates in line with
the direction from which the remote
control is activated.
To prevent theft, however, it is advisable
to only unlock the vehicle when you are
in close proximity to it. Locking and unlocking from the
outside
X Selective unlocking: Press button # on
the key once.
All turn signal lamps flash once.
The anti-theft warning system* is
disarmed.
The
driver’s door and the fuel filler flap
are unlocked.
X Global unlocking:
Press button # on the
key twice.
All turn signal lamps flash once again.
The passenger door and the tailgate are
unlocked in addition to the driver’s door
and the fuel filler flap.
X Global locking: Press button * on the
key.
With the doors, the tailgate(s), and the
fuel filler flap closed, the turn signal
lamps flash three times.
The
anti-theft warning system* is armed.
The indicator lamp on the central
locking switch flashes (Y page 54).
The interior and exterior 8
lamps come on
and then go out again after 12 seconds.
i In vehicles with anti-theft warning
system*, an acoustic signal will sound
when locking or unlocking the vehicle. When unlocking, the acoustic signal
sounds once. When locking, the acoustic
signal sounds three times.
The acoustic signal is activated at the
factory. If you wish to deactivate the
feature, contact an authorized smart
center.
Automatic locking
Auto-relock function The vehicle will lock again automatically
within approximately 60 seconds of
unlocking with the key if neither the
driver’s nor passenger door is opened.
!
To prevent an inadvertent lockout,
never
leave your key lying in the vehicle.
Drive lock function The vehicle locks automatically when the
ignition
is switched on and the wheels are
turning at vehicle speeds of approximately
8 mph (14 km/h) or more. The drive lock
function is enabled at the factory.
X Switching on: Switch off the ignition.
X Press the central locking switch
(Y page 54) and button * on the key
simultaneously.
An acoustic signal sounds.
The drive lock function is switched on.
X Switching off: Switch off the ignition.
X Press the central unlocking switch
(Y page 54) and button # on the key
simultaneously.
An acoustic signal sounds.
The drive lock function is switched off.
8 Vehicles with rain-light sensor* only. Opening and closing
53
>> Controls.
* optional Z
Page 56 of 228

Locking and unlocking from the inside
G
WARNING
When leaving the vehicle, always remove the
key from the starter switch, take it with
you, and lock the vehicle. Do not leave
children
unattended in the vehicle, or with
access to an unlocked vehicle. A child’s
unsupervised access to a vehicle could
result in an accident and/or serious
personal injury.
You can lock and unlock the vehicle from
inside using the central locking or
unlocking switch. This can be useful, for
example, if you want to unlock the
passenger door from inside or lock the
vehicle before starting to drive. X
Locking: Press central locking
switch :.
The indicator lamp on central locking
switch : comes on, when the starter
switch is in position 1.
The indicator lamp on central locking
switch : flashes, when the starter
switch is in position 0.
With the doors and the tailgate closed,
the vehicle locks.
X Unlocking: Press central unlocking
switch ;.
The vehicle unlocks and the indicator
lamp on central locking switch : goes
out. Opening the doors from the inside
You
can open a locked door from the inside.
Open door only when conditions are safe to
do so. X
Pull on inside door handle :.
With the driver’s door open a warning
signal sounds if the exterior lamps are
switched
on and the ignition is switched
off. Opening the upper tailgate on the
coupé
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. 54
Opening and closing
>> Controls.