GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
Rintervene unnecessarily
Rnot intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake. Terminate the
intervention in a non-critical driving situation.
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause Brake Assist to inter-
vene.
If adaptive Brake Assist is not available due to
a malfunction in the radar sensor system, the
brake system remains available with full
brake boosting effect and BAS.
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes" sec-
tion (
Ypage 62).
ESP
®monitors driving stability and traction,
i.e. power transmission between the tires and
the road surface.
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.
ETS (Electronic Traction System)
iObserve the "Important safety notes" sec-
tion (
Ypage 62).
ETS traction control is part of ESP
®.
Traction control brakes the drive wheels indi-
vidually 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. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP
®.
Important safety notes
iObserve the "Important safety notes" sec-
tion (
Ypage 62).
GWARNING
If ESP
®is malfunctioning, ESP®is unable to
stabilize the vehicle. Additionally, further driv-
ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP
®checked at a
qualified specialist workshop.
When towing your vehicle with the front axle
raised, observe the notes on ESP®
(Ypage 297).
When towing the vehicle with the rear axle
raised, observe the notes on ESP
®
(Ypage 297).
If the å ESP
®OFF warning lamp lights up
continuously, ESP®is deactivated.
If the ÷ ESP
®warning lamp and the å
warning lamp are lit continuously, ESP®is not
available due to a malfunction.
66Driving safety systems
Safety
Observe the information on warning lamps
(
Ypage 235) and display messages which
may be shown in the instrument cluster
(
Ypage 201).
Only use wheels with the recommended tire
sizes. Only then will ESP
®function properly.
Characteristics of ESP®
Characteristics of ESP®
If the ÷ ESP warning lamp goes out before
beginning the journey, ESP®is automatically
active.
If ESP
®intervenes, the ÷ESP®warning
lamp flashes in the instrument cluster.
If ESP
®intervenes:
XDo not deactivate ESP®under any circum-
stances.
XOnly depress the accelerator pedal as far as
necessary when pulling away.
XAdapt your driving style to suit the prevail-
ing road and weather conditions.
Deactivating/activating ESP®
Important safety notes
You can select between the following states
of ESP
®:
RESP®is activated.
RESP®is deactivated.
GWARNING
If you deactivate ESP
®, ESP®no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
It may be best to deactivate ESP®in the fol-
lowing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
iActivate ESP®as soon as the situations
described above no longer apply. ESP®will
otherwise not be able to stabilize the vehi-
cle if the vehicle starts to skid or a wheel
starts to spin.
!Avoid spinning the driven wheels for an
extended period with ESP®deactivated.
You could otherwise damage the drivetrain.
Deactivating/activating ESP
®
You can deactivate or activate ESP®via the
on-board computer (
Ypage 193).
ESP
®deactivated:
The å ESP
®OFF warning lamp in the
instrument cluster lights up.
ESP
®activated:
The å ESP
®OFF warning lamp in the
instrument cluster goes out.
Characteristics when ESP
®is deactivated
If ESP
®is deactivated and one or more wheels
start to spin, the ÷ESP®warning lamp in
the instrument cluster flashes. In such situa-
tions, ESP
®will not stabilize the vehicle.
If you deactivate ESP
®:
RESP®no longer improves driving stability.
REngine torque is no longer limited and the
drive wheels are able to spin.
The spinning of the wheels results in a cut-
ting action for better traction on loose sur-
faces.
RTraction control is still activated.
RCOLLISION PREVENTION ASSIST is no lon-
ger available; nor is it activated if you brake firmly with assistance from ESP
®.
RESP®still provides support when you brake
firmly.
Driving safety systems67
Safety
Z
The SmartKey centrally locks/unlocks:
Rthe doors
Rthe tailgate
Rthe charge socket flap
The turn signals flash once when unlocking
and three times when locking.
When the locator lighting is activated in Audio
20/COMAND, it also lights up when it is dark after the vehicle is unlocked with the remote
control (see the separate operating instruc-
tions).
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 198).
KEYLESS-GO
General notes
Bear in mind that the drive system can be
started by any of the vehicle occupants if
there is a key in the vehicle.
Locking and unlocking
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
functions of KEYLESS-GO with those of a con-
ventional SmartKey. Unlock the vehicle by
using KEYLESS-GO, for instance, and lock it
using the &button on the SmartKey.
The driver's door and the door at which the
handle is used, must both be closed. The
SmartKey must be outside the vehicle. 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
SmartKey determines whether a valid Smart-
Key is in the vehicle. This occurs, for example:
Rwhen starting the drive system
Rwhilst driving
Rwhen the external door handles are
touched
Rduring convenience closing
XTo unlock the vehicle: touch the inner
surface of the door handle.
XTo lock the vehicle: touch sensor sur-
face :or;.
Make sure that you do not touch the inner
surface of the door handle.
XConvenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
Further information on the convenience
closing feature (
Ypage 84).
XTo unlock the tailgate: pull tailgate han-
dle :.
Deactivating and activating
If you do not intend to use the vehicle for a
longer period of time, you can deactivate KEY-
LESS-GO. The SmartKey will then use very lit-
tle power, thereby conserving battery power.
SmartKey73
Opening and closing
Z
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
flashes twice briefly and lights up once,
then KEYLESS-GO is deactivated
(
Ypage 75).
XTo activate: press any button on the
SmartKey.
or
XInsert the SmartKey into the ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again.
KEYLESS-GO start function
General notes
Bear in mind that the drive system can be
started by any of the vehicle occupants if
there is a key in the vehicle.
Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's door
and the charge socket flap are unlocked when
the vehicle is unlocked. This is useful if you
frequently travel on your own.
XTo change the setting: press and hold the
% and& buttons simultaneously for
approximately six seconds until the battery
check lamp flashes twice (
Ypage 75).
If the setting of the locking system is changed
within the signal range of the vehicle, press-
ing 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%but-
ton twice.
XTo lock centrally: press the&button.
The KEYLESS-GO function is changed as fol-
lows:
XTo unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
XTo unlock centrally: touch the inner sur-
face of the door handle on the front-
passenger door or the rear door.
XTo lock centrally: touch the outer sensor
surface on one of the door handles.
XTo restore the factory settings: press
and hold the %and& buttons simul-
taneously for approximately six seconds
until the battery check lamp flashes twice
(
Ypage 75).
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO,
use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-theft alarm system will be triggered
(
Ypage 69).
There are several ways to turn off the alarm:
XTo deactivate the alarm with the key:
press the %or& button on the key.
or
XInsert the SmartKey into the ignition lock.
or
XTo deactivate the alarm with KEYLESS-
GO: press the Start/Stop button in the igni-
tion lock. The SmartKey must be in the
vehicle.
74SmartKey
Opening and closing
or
XLock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle.
If you unlock the vehicle using the mechanical
key, the charge socket flap will not be
unlocked automatically.
Removing the mechanical key
XPush release catch :in the direction of
the arrow and at the same time remove
mechanical key ;from the SmartKey.
For further information about:
Runlocking the driver's door (Ypage 80)
Runlocking the cargo compartment
(
Ypage 82)
Rlocking the vehicle (Ypage 81)
Inserting the mechanical key
XPush mechanical key ;completely into
the SmartKey until it engages and release
catch :is back in its basic position.
SmartKey battery
Important safety notes
GWARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatalinjury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National
guidelines must be observed during disposal.
In California, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Mercedes-Benz recommends that you have
the battery replaced at a qualified specialist
workshop.
Checking the battery
XPress the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
XChange the battery (Ypage 75).
iIf the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the &or% button:
Rlocks or
Runlocks the vehicle
iYou can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
SmartKey75
Opening and closing
Z
Mirrors
Rear-view mirror
XAnti-glare mode:flick anti-glare lever :
forwards or back.
Exterior mirrors
Adjusting the exterior mirrors
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the vehicle's drive system.
GWARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder.
XTurn the SmartKey to position 1or 2in the
ignition lock (
Ypage 131).
XPress button :for the left-hand exterior
mirror or button ;for the right-hand exte-
rior mirror.
The indicator lamp in the corresponding
button lights up in red.
The indicator lamp goes out again after
some time. You can adjust the selected
mirror using adjustment button =as long
as the indicator lamp is lit.
XPress adjustment button =up, down, or to
the left or right until you have adjusted the
exterior mirror to the correct position. You
should have a good overview of traffic con-
ditions.
The convex exterior mirrors provide a larger
field of vision.
After the engine has been started, the exte-
rior mirrors are automatically heated at low
outside temperatures. Heating takes a maxi-
mum of ten minutes.
iYou can also heat up the exterior mirrors
manually by switching on the rear window
defroster.
Exterior mirror pushed out of position
If an exterior mirror has been pushed out of
position, proceed as follows:
XMove the exterior mirror into the correct
position manually.
Mirrors95
Seats, steering wheel and mirrors
Z
Useful information............................100
Exterior lighting ................................ 100
Interior lighting ................................. 103
Replacing bulbs ................................. 104
Windshield wipers ............................109
99
Lights and windshield wipers
Useful information
i
This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops (
Ypage 26).
Exterior lighting
General notes
For reasons of safety, Mercedes-Benz recom-
mends that you drive with the lights switched
on even during the daytime. In some coun-
tries, operation of the headlamps varies due
to legal requirements and self-imposed obli-
gations.
Setting the exterior lighting
Setting options
Exterior lighting can be set using the:
Rlight switch
Rcombination switch (Ypage 102)
Ron-board computer (Ypage 198)
Light switch
Operation
1 WLeft-hand standing lamps
2XRight-hand standing lamps
3TParking lamps, license plate and
instrument cluster lighting
4ÃAutomatic headlamp mode, control-
led by the light sensor
5LLow-beam/high-beam headlamps
BRRear fog lamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
XTurn the light switch to the Ãposition.
The exterior lighting (except the parking/
standing lamps) switches off automatically if
you:
Rremove the SmartKey from the ignition lock
Ropen the driver's door with the SmartKey in
position 0in the ignition lock.
Automatic headlamp mode
à is the favored light switch setting. The
light setting is automatically selected accord-
ing to the brightness of the ambient light
(exception: poor visibility due to weather con-
ditions such as fog, snow or spray):
RKey in position 1in the ignition lock: the
parking lamps are switched on or off auto-
matically depending on the brightness of
the ambient light.
RWith the drive system running: if you have
switched on the daytime running lamps
function in the on-board computer, the day-
100Exterior lighting
Lights and windshield wipers