Driving safety systems
>> Safety.
73
Emergency brake maneuver
>Keep continuous full pressure on the brake
pedal.
Electronic Stability Program
(ESP)Your vehicle is equipped with the E
lectronic
S
tability P
rogram (ESP
®). The ESP
® is opera
tional as soon as the engine is running and it
monitors the vehicle’s traction (force of ad
hesive 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 lampv in the instrument
cluster flashes when the ESP
® is engaged.
G
Warning!
When the ABS is malfunctioning, the
hydraulic brake assistant and the ESP
®
are also switched off.
When the ABS is malfunctioning, the
wheels may lock during hard braking,
reducing steering capability and extend
ing 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 effi
ciency beyond that afforded by the con
dition 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 jeopar
dize the user’s safety or the safety of
others.
Driving safety systems
74
>> Safety. The ESP
® warning lampv in the instrument
cluster comes on when you switch on the igni
tion. It goes out when the engine is running.
Depending on the driving situation, the ESP
®
• will reduce the speed,
• selectively brakes individual wheels,
• equalizes the speed of the driven wheels,
• stabilizes the vehicle when braking,
• assists you in evasive maneuvers on all
roads.
G
Warning!
If the ESP
® warning lampv in the
instrument cluster flashes, proceed as
follows:
• While driving off, apply as little throttle
as possible.
• While driving, ease up on the accelera
tor.
• 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.
Driving safety systems
>> Safety.
75
!
Because the ESP
® operates automatically,
the engine must be turned off (key in starter
switch position0) when
• the parking brake is being tested on a
brake test dynamometer,
• the vehicle is being towed with the front
axle raised.
Active braking action through the ESP
® may
otherwise seriously damage the brake system
on the rear axle.
i
The ESP
® wi ll on l y f un cti on p ro p er ly if you
use wheels of the recommended tire size
(
page 299).
Hydraulic brake assistantThe 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.
>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 nor
mally be provided during an emergency
braking maneuver. Therefore, the brak
ing distance may increase.
Driving safety systems
76
>> Safety.
Activating the hazard warning
flasher after an emergency
braking maneuver If you bring the vehicle to a complete stop by
hard braking at a speed of more than 43 mph
(70 km/h), the hazard warning flasher auto
matically comes on 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 (
page 107)
or until the speed of the vehicle has exceeded
6mph (10km/h).
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 hydro
planing. Only a safe, attentive, and skillful
driver can prevent accidents. The capa
bilities 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.
Antitheft systems
>> Safety.
77 Electronic immobilizer
The electronic immobilizer prevents unautho
rized 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.
> Activating: Remove the key from the starter
switch.
> Deactivating: Turn the key to starter switch
position1.
Antitheft warning system*Once the antitheft warning system has been
armed, a visual and audible alarm is triggered
when
• someone opens a door or the tailgate,
• someone enters the vehicle’s interior,
• there is motion inside the vehicle,
• 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 (
page 78).Close the windows and the tailgate before
arming the alarm system. Make sure that there
are no moving objects inside the vehicle.
The switch is located in the upper center
console.
1
Warning system indicator lampP54.25536331
Antitheft systems
78
>> Safety. >Arming: Lock the vehicle using the remote
control.
Warning system indicator lamp
1 flashes
rapidly.
The antitheft warning system arms after
about 25 seconds.
When the antitheft warning system is
armed, warning system indicator lamp
1
flashes about every three seconds.
i
You can also arm the antitheft warning
system by locking the vehicle without using
the remote control (
page 250).
>Disarming: Unlock the vehicle using the
remote control.
The antitheft warning system is disarmed.
Warning system indicator lamp
1 stops
flashing.
Canceling the alarm
>Insert the key in the starter switch.
>Turn Starter switch in Position 1
(
page 91).
or
>Press button
©
or
ª
on the key.
Towaway alarm* and interior mo
tion sensor*Once the antitheft 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.
>Arming: Lock the vehicle using the remote
control.
The towaway protection and the interior
motion sensor arm after about 25 seconds.
>Disarming: Unlock the vehicle using the
remote control.
The towaway protection and the interior
motion sensor are disarmed.Canceling the alarm
>Insert the key in the starter switch.
>Turn Starter switch in Position 1
(
page 91).
or
>Press button
©
or
ª
on the key.
Switching off towaway protection and
interior motion sensor
Deactivate the towaway protection and the
interior motion sensor when locking the vehi
cle and
• transporting the vehicle,
• board, e.g. a ferry or auto train,
• there are people or animals in the vehicle,
• the side windows remain open.
This prevents any false alarm.
Opening and closing
82
>> Controls.
KeyKey with remote control1
ª
Lock button
2
»
Opening the retractable soft top
1/
unlocking the upper tailgate
2
3
 Panic button (
page 71)
4
©
Unlock buttonThe remote control centrally locks and
unlocks:
• the driver door
• the fuel filler flap
• the passenger door
• the upper tailgate
!
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.
>Check the batteries in the remote control
and replace them if necessary
(page 252).
>If you do not have a spare transmitter
battery at hand, use the key to open the
driver door and the fuel filler flap
(page 250).
If the remote control is malfunctioning,
contact an authorized smart center.
1 cabrio only.
2 coupé only.
P80.35231331
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.
Opening and closing
>> Controls.
83
i
USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the follow
ing two conditions:
(1) This device may not cause harmful inter
ference, 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.
i
Canada only:
This device complies with RSS210 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 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
radiotransmission 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> Selective unlocking: Press button
©
on
the key once. All turn signal lamps flash
once.
The antitheft warning system* is disarmed.
The driver’s door and the fuel filler flap are
unlocked.
•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.
> Global locking: Press button
ª
on the key.
With the doors, the tailgate(s), and the fuel
filler flap closed the turn signal lamps flash
three times.
The antitheft warning system* is armed.
The indicator lamp on the central locking
switch (
page 85) flashes.
The interior and exterior
1 lamps come on
and then go out again after 12 seconds.
1 Vehicles with rainlight sensor* only.