If childre
nopen a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following 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 the child could be burned on these
parts.
Override feature for the rear side
windows G
WARNING
When children ride on the vehicle's rear seats,
activate the override switch. Otherwise the
children could be injured, e.g. by trapping
themselves in the rear side window. X
To activate/deactivate: press button:.
If indicator lamp ;is lit, operation of the
rear side windows is deactivated.
Operation is only possible using the
switches in the driver's door. If indicator
lamp ;is off, operation is possible using
the switches in the rear compartment. Panic alarm
X
To activate: press!button :for
approximately one second.
An alarm sounds and the exterior lighting
flashes.
X To deactivate: press!button :
again.
or
X Insert the SmartKey into the ignition lock.
or
X Press the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the
vehicle. Driving safety systems
Overview of driving safety systems
In this section, you will find information about
the following driving safety systems:
R ABS ( Anti-lock BrakingSystem)
R BAS ( Brake Assist System)
R BAS PLUS ( BrakeAssist System Plus)
R ESP ®
(Electronic StabilityProgram)
R EBD ( Electronic Brake force Distribution)
R ADAPTIVE BRAKE
R PRE-SAFE ®
Brake Important safety notes
If you fail to adapt your driving style or
become distracted, the driving safety 64
Driving safety systemsSafety
systems can neither reduce the risk of
accident nor override the laws of physics.
Driving safety systems are merely aids
designed to assist driving. You are
responsible for the distance to the vehicle in
front, for vehicle speed and for braking in
good time. Always adapty our driving style to
suit the prevailing road and weather
conditions and maintain asafe distance from
the vehicle in front. Drive carefully.
i The driving safety systems described only
work as effectively as possible when there
is adequate contact between the tires and
the road surface. Pay particular attention
to the informatio nregarding tires,
recommended minimum tire tread depths
etc.int he "Wheels and tires" section
(Y page 454).
In wintry driving conditions, always use
winter tires (M+S tires) and if necessary,
snow chains. Only in this way will the
driving safety systems described in this
section work as effectively as possible. ABS (Anti-lockB
raking System)
Important safety notes i
Observe the "Important safety notes"
sectio n(Ypage 64). G
WARNING
If ABSi s faulty, the wheels could lock when
braking. The steerability and braking
characteristics may be severely impaired.
Additionally, further driving safety systems
are deactivated. There is an increased danger
of skidding and accidents.
Drive on carefully. Have ABS checked
immediately at a qualified specialist
workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp (Y page 391) anddisplay messages which may be shown in the
instrument cluster (Y
page 353).
ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the
vehicle when braking.
ABS works from a speed of about 5 mph
(8 km/h) upwards, regardless of road-surface
conditions. ABS works on slippery surfaces,
even if you only brake gently.
The ! warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
Braking: X
If ABS intervenes: continue to depress the
brake pedal vigorously until the braking
situation is over.
X To make a full brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel
a pulsing in the brake pedal.
The pulsating brake pedal can be an
indication of hazardous road conditions and
functions as a reminder to take extra care
while driving. BAS (Brake AssistS
ystem)
i Observe the "Important safety notes"
section (Y page 64). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of an accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
BAS operates in emergency braking
situations. If you depress the brake pedal
quickly, BAS automatically boosts the braking
force, thus shortening the stopping distance. Driving safety systems
65Safety Z
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensors checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle.
If BAS PLUS is not available due to a
malfunction in the radar senso rsystem, the
brake system remains available with full
brake boosting effect and BAS. ESP
®
(Electronic Stabilit yProgram)
Important safety notes i
Observe the "Important safety notes"
sectio n(Ypage 64). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further
driving safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
! Vehicles with 4MATIC: switch off the
ignition when the parking brake is being
tested on a brake dynamometer.
Application of the brakes by ESP ®
may
otherwise destroy the brake system.
Vehicles without 4MATIC: when towing your
vehicle with the rear axle raised, it is
important that you observe the notes on
ESP ®
(Y page 448).
ESP ®
is deactivated if the åwarning lamp
in the instrument cluster lights up
continuously when the engin eis running.
If the ÷ warning lamp and the å
warning lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 393) and displaym essages which
may be shown in the instrument cluster
(Y page 353). If ESP
®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. The engine output is also modified to
keep the vehicle on the desired course within
physical limits. ESP ®
assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilize the vehicle during braking.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster.
If ESP ®
intervenes:
X Do not deactivate ESP ®
under any
circumstances.
X Only depress the accelerator pedal as far
as necessary when pulling away.
X Adapt your driving style to suit the
prevailing road and weather conditions.
i Only use wheels with the recommended
tire sizes. Only then will ESP ®
function
properly.
ETS/4ETS (Electronic Traction System) Traction control is part of ESP
®
.
Traction control brakes the drive wheels
individually if they spin. This enables you to
pull away and accelerate on slippery surfaces,
for example if the road surface is slippery on
one side. On vehicles with 4MATIC, more
drive torque is also transferred to the wheel
or wheels with traction.
Traction control remains active if you
deactivate ESP ®
.
Deactivating/activating ESP ® i
Observe the "Important safety notes"
section (Y page 64). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer
stabilizes the vehicle. There is an increased
risk of skidding and an accident.
Only deactivate ESP ®
in the situations
described in the following. Driving safet
ysystems
67Safety Z
In particular, the detection of obstacles can
be impaired if:
R
dirt on the sensors or anything else
covering the sensors
R snow or heavy rain
R interference by other radars ources
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle traveling in front, e.g. a
motorbike
R a vehicle traveling in front on a different line
relative to the center of your vehicle G
WARNING
PRE-SAFE ®
Brake does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
As a result, PRE-SAFE ®
Brake may neither
give warnings nor intervene in all critical
situations. There is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
In order to maintain an appropriate distance
from the vehicle in front and thus prevent a
collision, you must apply the brakes yourself.
X To activate/deactivate: activate or
deactivate PRE-SAFE ®
Brake in the on-
board computer (Y page 348).
After activation, the Äsymbol is
displayed on the left in the instrument
cluster.
For BAS PLUS to assist you, the radar sensor
system must be operational.
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensors checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle. Theft deterrent locking system
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
X To activate with the SmartKey: remove
the SmartKey from the ignition lock.
X To activate with KEYLESS-GO: switch the
ignition off and open the driver's door.
X To deactivate: switch on the ignition.
i The immobilizer is always deactivated
when you start the engine.
In the event that the engine cannot be
started when the starter battery is fully
charged, the immobilizer may be faulty.
Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in
USA) or 1-800-387-0100 (in Canada). ATA (anti-theft alarm system)
Av isual and audible alarm is triggered if the
alarm system is armed and you open:
R a door
R the vehicle with the mechanical key
R the trunk lid
R the hood
The alarm is not switched off, even if you
close the open door that has triggered it, for
example. 70
Theft deterrent locking systemSafety
i
If the alarm stays on for more than
30 seconds, the mbrace (USA only) or TELE
AID (Canada only) emergency call system
initiates a call to the Customer Assistance
Center automatically. The emergency call
system initiates the call provided that:
R you have subscribed to the mbrace/
TELE AID service.
R the mbrace/TELE AID service has been
activated properly.
R the required mobile phone, powers upply
and GPS are available. X
To arm: lockthe vehicle with the SmartKey
or KEYLESS-GO.
Indicator lamp :flashes. The alarm
system is armed after approximately
30 seconds.
X To disarm: unlock the vehicle with the
SmartKey or KEYLESS-GO.
X To stop the alarm using the SmartKey:
insert the SmartKey into the ignition lock.
The alarm is switched off.
or
X Press the %or& button on the
SmartKey.
The alarm is switched off. X
To stop the alarm using KEYLESS-GO:
grasp the outside door handle. The
SmartKey must be outside the vehicle.
The alarm is switched off.
or
X Press the Start/Stop button on the
dashboard. The SmartKey must be inside
the vehicle.
The alarm is switched off. Theft deterrent locking system
71Safety Z
2. This device must be able to
accommodate interference that is
received, including interference which
could cause unwanted functions.
Unapproved modifications to this device
may lead to withdrawal of permissio
nto
operate it.
The product label with FCC ID and IC
certification number can be found in the
battery case of the SmartKey.
Important information for using
KEYLESS-GO R
You can use the KEYLESS-GO key as a
conventional key.
R You can combine KEYLESS-GO functions
with those of a conventional key, e.g. open
with KEYLESS-GO and close with the
& button.
R Always carry your KEYLESS-GO key on your
person.
R Never keep the KEYLESS-GO key with:
-electronic equipment, such as your
mobile phone or another key
- metal objects, such as coins or metal foil
This may impair the functioning of
KEYLESS-GO.
R To open or close the vehicle, the KEYLESS-
GO key should be no more than 3 ft (1 m)
from the door or trunk.
R If the vehicle is parked for more than
72 hours, the KEYLESS-GO function is
deactivated. Pull one of the outer door
handles and turn on the ignition to
reactivate the KEYLESS-GO function.
R When the KEYLESS-GO key is removed
from the vehicle, it is possible that the
system may not recognize it. In this case,
the vehicle cannot be locked or started with
KEYLESS-GO.
R If the KEYLESS-GO key has been removed
from the vehicle, e.g. if a passenger leaves
the vehicle with the KEYLESS-GO key:
- while someone is holding the Start/Stop
button or attempting to lock the vehicle using the outer door handle, the
Key Not Detected message will appear in
the multifunction display.
- while the engine is running, the red Key Not Detected message will appear in
the multifunction display as you pull
away. Find the KEYLESS-GO key and
change its position in the vehicle. Place
the KEYLESS-GO key in a location such
as the front-passenger seat, or carry it in
your shirt pocket.
R If you have started the engine using the
Start/Stop button, you can turn if off again
by:
-pressing the Start/Stop button again
- inserting the KEYLESS-GO key into the
ignition lock when the vehicle is
stationary and the automatic
transmission is in parking position P.
R You may accidentally unlock the vehicle if
the KEYLESS-GO key is within 3 ft (1 m) of
the vehicle and:
- a jet of water splashes an outer door
handle
or
- you are cleaning an outer door handle.
R Note that the engine can be started by any
vehicle occupant if a KEYLESS-GO key is in
the vehicle.
Option 1: there is a KEYLESS-GO key in the
vehicle and a KEYLESS-GO key outside the
vehicle. If you leave the KEYLESS-GO key
behind when you get out and lock the
vehicle, a message does not appear in the
multifunction display.
Option 2: there is a KEYLESS-GO key in the
vehicle but no KEYLESS-GO key outside the
vehicle. When you get out and try to lock
the vehicle, the Key Detected in Vehicle message appears in the
multifunction display .The vehicle is not
locked in this case.
When starting the engine and while driving,
KEYLESS-GO also checksw hether a valid key76
SmartKeyOpening and closing
is in the vehicle by periodically establishing
radio contact.
X
To unlock the vehicle: pull the door
handle.
X To lock the vehicle: touch sensor
surface :.
If you pull on the handle of the trunk lid, only
the trunk of the vehicle is unlocked. Changing the settings of the locking
system
You can change the settings of the locking
system in such a way that only the driver's
door and the fuel filler flap are unlocked. This
is useful if you frequently travel on your own.
X To change the setting: press the%
and & buttons until the battery check
lamp ( Ypage 78) flashes twice.
The SmartKey now functions as follows:
X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the%
button twice.
X To lock centrally: press the&button. The KEYLESS-GO function is changed as
follows:
X
To unlock the driver' sdoor :pull the door
handle on the driver's door.
X To unlock centrally: pull the door handle
on the front-passenger door.
X To lock centrally: touch the outer sensor
surface on one of the door handles. Restoring the factory settings
X Press the %and& buttons
simultaneously for approximately six
seconds until the battery check lamp
flashes twice. Mechanical key
General notes If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-thef
talarm system will be triggered
(Y page 70).
There are several ways to tur noff the alarm:
X To stop the alarm with the SmartKey:
press the %or& button on the
SmartKey.
or
X Insert the SmartKey into the ignition lock.
or
X To stop the alarm with KEYLESS-GO:
press the Start/Stop button in the ignition
lock. The SmartKey must be in the vehicle.
or
X Lock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle. SmartKey
77Opening and closing Z
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
Point the tip of the SmartKey at the driver's door handle from a
distance of approximately 1.5 ft (50 cm) and try to unlock or
lock the vehicle again.
If this does not work:
X Check the key battery and replace it if necessary (Y page 78).
X Unlock (Y page 83) or lock (Y page 83) the vehicle with the
mechanical key. The SmartKey is faulty.
X
Unlock (Y page 83) or lock (Y page 83) the vehicle with the
mechanical key.
X Have the SmartKey checked at a qualified specialist workshop. You can no longer
lock/unlock the
vehicle using KEYLESS-
GO. KEYLESS-GO is in standby mode because the vehicle has not been
unlocked for an extended period.
X
Pull the door handle twice and then insert the SmartKey into the
ignition lock. 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 %or& button.
X Have KEYLESS-GO checked at a qualified specialist workshop. 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 %or& button. You have lost a
SmartKey. X
Have the SmartKey canceled at an authorized Mercedes-Benz
Center.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. 80
SmartKeyOpening and closing