
R
traction control is still activated.
R ESP ®
still provides support when you brake
firmly.
If SPORT handling mode is activated and one
or more wheels start to spin, the ÷ESP®
warning lamp in the instrument cluster
flashes. ESP ®
only stabilises the vehicle to a
limited degree. X
To activate: briefly press button :.
The M SPORT handling mode warning
lamp in the instrument cluste rlights up.
The SPORT handling mode message
appears in the multifunction display.
X To deactivate: briefly press button :.
The M SPORT handling mode warning
lamp in the instrumen tcluster goes out.
Deactivating/activating ESP ®
ESP ®
is activated automatically when the
engine is started.
i Vehicles with ECO start/stop function:
the ECO start/stop function switches the
engine off automatically when the vehicle
comes to a stop. When pulling away again,
the engine starts automatically. ESP ®
remains in its previously selected status.
Example: if ESP ®
was deactivated before
the engine was switched off, ESP ®
remains
deactivated when the engine is switched on
again. It may be best to deactivate ESP
®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel G
WARNING
Activate ESP ®
as soon as the situations
described above no longer apply. ESP ®
will
otherwise not be able to stabilise the vehicle
if the vehicle starts to skid or a wheel starts
to spin.
If you deactivate ESP ®
:
R ESP ®
no longer improves driving stability.
R the engine's torque is no longer limited and
the drive wheels are able to spin .The spin-
ning of the wheels results in a cutting
action, which provides better grip.
R traction control is still activated.
R PRE-SAFE ®
is no longer available; it is also
not activated if you brake firmly and ESP ®
intervenes.
R PRE-SAFE ®
Brake is no longer available;
nor is it activated if you brake firmly and
ESP ®
intervenes.
R ESP ®
still provides support when you brake
firmly.
If ESP ®
is deactivated and one or more wheels
start to spin, the ÷ESP®
warning lamp in
the instrumentc luster does not flash. In such
situations, ESP ®
will not stabilise the vehicle. 74
Driving safety systemsSafety

X
To deactivate: press button:until the
å ESP®
OFF warning lamp lights up in
the instrument cluster.
The ÷OFF message appears in the mul-
tifunctio ndisplay. G
WARNING
ESP ®
is deactivated if the åwarning lamp
in the instrument cluster lights up continu-
ously when the engine is running.
If the ÷ warning lamp and åwarning
lamp are lit continuously, ESP ®
is not availa-
ble due to a malfunction.
There is an increased risk of your vehicle skid-
ding in certain situations.
You should always adapt your driving style to
suit the prevailing road and weathe rcondi-
tions.
X To activate: briefly press button :.
The å ESP®
OFF warning lamp in the
instrument cluster goes out. The ÷ONmessage appears in the multifunction dis-
play.
ESP ®
trailer stabilisation If your vehicle/trailer combination begins to
lurch, you can only stabilise the vehicle/
trailer combination by depressing the brake
firmly.
In this situation, ESP ®
assists you and can
detect if the vehicle/trailer combination
begins to lurch. ESP ®
slows the vehicle down
by braking and limiting the engine output until
the vehicle/trailer combination has stabi-
lised.
Trailer stabilisation is active above speeds of
about 65 km/h. G
WARNING
If road and weather conditions are poor,
trailer stabilisation will not be able to prevent
the trailer from swerving and will thus be
unable to reduce the risk of an accident .Trail- ers with a high centre of gravity can tip over
before ESP
®
can detect this.
Trailer stabilisation does not work if ESP ®
is
deactivated or disabled because of a mal-
function. EBD (electronic brake force distribu-
tion)
i Observe the "Important safety notes" sec-
tion (Y page 69).
EBD monitors and controls the brake pres-
sure on the rear wheels to improve driving
stability while braking. G
WARNING
If EBD has malfunctioned, the braking system
remains available with full brake boosting
effect. However, the rear wheels can still lock,
e.g. under full braking. This could cause you
to lose control of yourv ehicle and cause an
accident. You should therefore adapt your
driving style to the differen thandling charac-
teristics. ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety
and offers increased braking comfort. In addi-
tion to th ebraking function, ADAPTIVE BRAKE
also has the HOLD function (Y page 194) and
hill start assist (Y page 158). For further
information, see Driving tips (Y page 178). PRE-SAFE
®
Brake
PRE-SAFE ®
Brake is only available in vehicles
with DISTRONIC PLUS.
i Observe the "Important safety notes" sec-
tion (Y page 69).
PRE-SAFE ®
Brake can help you to minimise
the risk of a frontal collision with a vehicle
ahead or reduce the effects of such a colli-
sion. If PRE-SAFE ®
Brake has detected a risk Driving safety systems
75Safety Z

In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensors or anything else cover-
ing the sensors
R snow or heavy rain
R interference by other radars ources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
R a narrow vehicle travelling in front, e.g. a
motorbike
R a vehicle travelling in front on a different
line 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 not give
warnings or intervene in 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 the appropriate distance
to the vehicle in front and thus prevent a col-
lision, you must apply the brakes yourself.
X To activate/deactivate: activate or deac-
tivate PRE-SAFE ®
Brake in the on-board
computer (Y page 241).
The Ä symbol appears in the multifunc-
tion display as long as the HOL Dfunction
is not activated (Y page 194).
On vehicles with parking guidance, the
Ä symbol is displayed when Pis
engaged or you are driving faste rthan
35 km/h.
The radar sensor system is switched off auto-
matically in the vicinity of radio telescope
facilities (Y page 398).
Vehicles without COMAND and a navigation
system and vehicles for Australia: the radar
sensor system and on-board computer must be switched off in the vicinity of radio tele-
scope facilities (Y page 247).
For PRE-SAFE ®
Brake to assist you when driv-
ing, the radar sensor system must be
switched on (Y page 247) and be opera-
tional.
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensors checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle. Anti-theft systems
Immobiliser
The immobiliser prevents your vehicle from
being started without the correct key.
X To activate with the key: remove the key
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 immobiliser is always deactivated
when you start the engine. ATA (Anti-Theft Alarm system)
Av isual and audible alarm is triggered if the
alarm system is primed and you open:
R a door
R the vehicle with the emergency key ele-
ment
R the boot lid/tailgate
R the bonnet
The alarm is not switched off, even if you
close the open door that has triggered it, for
example. Anti-theft systems
77Safety Z

Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviations are possible. Please
note that your vehicle may not be equipped
with all features described. This also
applies to safety-relevan tsystems and
functions.
i Please read the information on qualified
specialist workshops (Y page 25).Correct driver's sea
tposition Observe the safety guidelines on seat adjust-
ment (Y
page 105).
X Chec kwhether you have adjusted seat =
properly.
Manual and electrical seat adjustment
(Y page 106)
Electrical seat adjustment (Y page 106)When adjusting the seat, make sure:
R
you are as far away from the driver's air-
bag as possible.
R you are sitting in a normal upright posi-
tion.
R you can fasten the seat belt properly.
R you have moved the backrest to an
almost vertical position.
R you have set the seat cushion angle so
that your thighs are gently supported.
R you can depress the pedals properly.
X Check whether the head restraint is adjus-
ted properly (Y page 107).
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the centre of the head restraint.
Observe the safety guidelines on steering
wheel adjustment (Y page 114).
X Check whether steering wheel :is adjus-
ted properly.
Adjust the steering wheel manually
(Y page 114)
Adjusting the steering wheel electrically
(Y page 115)
When adjusting the steering wheel, make
sure:
R you can hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the instru-
ment cluster clearly.
Observe the safety guidelines for seat belts
(Y page 49).
X Check whether you have fastened seat
belt ;properly (Y page 51).104
Correct driver's seat positionSeats, steering wheel and mirrors

Control panel for THERMATIC automatic climate control (2-zone)
:
Activates/deactivates air-recirculation mode (Y page 144)
; Demists the windscreen (Y page 142)
= Activates/deactivates the ZONE function (Y page 142)
? Display
A Sets climate control to automatic mod e(Ypage 140)
B Activates/deactivates coolin gwith air dehumidification ( Ypage 139)
C Switches the rear window heating on/off (Y page 143)
D Switches climate control on/off (Y page 139)
E Sets the temperature, right (Y page 141)
F Sets the air distribution (Y page 141)
G Sets the airflow (Y page 142)
H Sets the temperature, left (Y page 141)Notes on using THERMATIC automatic
climate control
The following contains notes and recommen-
dations on optimum use of THERMATIC auto-
matic climate control.
R Activate climate control using the Ãand
¿ buttons .The indicator lamps above
the à and¿ buttons light up.
R Set the temperature to 22 †.
R Only use the demisting function briefly,
until the windscreen is clear again.
R Only use the air-recirculation mode briefly,
e.g. if there are unpleasant outside odours
or when in a tunnel. The windows could otherwise mist up as no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for
the front-passenger side as well. The indi-
cator lamp above the ábutton goes
out. Overview of climate control systems
137Climate control Z

Control panel for THERMOTRONIC automatic climate control (3-zone)
Fron
tcontrol panel
: Sets climate control to automatic mode (Y page 140)
; Demists the windscreen (Y page 142)
= Activates/deactivates the ZONE function (Y page 142)
? Display
A Activates/deactivates air-recirculatio nmode (Y page 144)
B Activates/deactivates the residual heat function (Y page 145)
C Activates/deactivates cooling with air dehumidification ( Ypage 139)
D Switches the rear window heating on/off( Ypage 143)
E Switches climate control on/off (Y page 139)
F Sets the temperature, right (Y page 141)
G Sets climate control to automatic mode (FOCUS/MEDIUM/DIFFUSE )(Y page 140)
H Sets the airflow (Y page 142)
I Sets the air distribution (Y page 141)
J Sets the temperature, left (Y page 141)
Rear control panel
K Increases the temperature (Y page 141)
L Display
M Increases the airflow (Y page 142)138
Overview of climate control systemsClimate control

THERMATIC automatic climate control
X
Turn the key to position 2in the ignition
lock.
X Press switch Fup or down repeatedly until
the desired symbol appears in the display
(Y page 137).
THERMOTRONIC automatic climate
control X
Turn the key to position 2in the ignition
lock.
X Press switch Iup or down repeatedly until
the desired symbol appears in the display
(Y page 138). Setting the airflow
THERMATIC automatic climate control X
Turn the key to position 2in the ignition
lock.
X To increase/reduce: press buttonGup
or down (Y page 137).
THERMOTRONIC automatic climate
control X
Turn the key to position 2in the ignition
lock.
X To increase/reduce front-compart-
men tairflow: press button Hup or down
(Y page 138).
X To increase/reduce the rear airflow:
press button MorN(Y page 138). Switching the ZONE function on/off
X To switch on: press theábutton.
The indicator lamp above the ábutton
lights up. THERMATIC automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperature setting for the driver's
side is not adopted for the front-passenger
side and the rear compartment.
When the buttons for temperature, airflow or
air distribution are activated, the temperature
setting for the driver's side is not adopted for
the other climate control zones.
X To switch off: press theábutton.
The indicator lamp above the ábutton
goes out.
THERMATIC automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperature setting for the driver's
side is adopted for the front-passenger side
and the rear compartment. Demisting the windscreen
You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the side windows.
i You should only select the demisting
function until the windscreen is clear again.
X Turn the key to position 2in the ignition
lock.
X To activate: press the¬button.
The indicator lamp above the ¬button
lights up.
The climate control syste mswitches to the
following functions:
R cooling with air dehumidificatio non
R high airflow 19
R high temperature 19
R air distribution to the windscreen and
front side windows
R air-recirculation mode off
19 Depending on the outside temperature. 142
Operating the climate control systemClimate control

X
To switch off: press the¬button.
The indicator lamp above the ¬button
goes out. The previously selected settings
come into effect again. The cooling with air
dehumidification function remains on. Air-
recirculatio nmode remains deactivated.
or
X Press the Ãbutton.
The indicator lamp above the ¬button
goes out. Airflow and air distribution are set
to automatic mode.
or
X THERMATIC automatic climate control:
press temperature button EorH up or
down (Y page 137).
THERMOTRONIC automatic climate
control: press temperature button For
J up or down (Y page 138).
or
X THERMATIC automatic climate control:
press switch Gup or down (Y page 137).
THERMOTRONIC automatic climate
control: press button Hup or down
(Y page 138). Demisting the windows
Windows misted up on the inside X
Activate the ¿cooling with air dehu-
midification function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the demisting function (Y page 142).
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X THERMATIC automatic climate control:
press button Fup or down (Y
page 137)until the PorO symbol
appears in the display.
X THERMOTRONIC automatic climate
control: press button Iup or down
(Y page 138) until the PorO symbol
appears in the display.
i You should only select this setting until
the windscreen is clear again. Rear window heating
Switching on/off G
WARNING
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
The rear window heating has ahigh current
draw. You should therefore switch it off as
soon as the window is clear .Itotherwise
switches off automatically after several
minutes.
If the battery voltage is too low, the rea rwin-
dow heating may switch off.
X Turn the key to position 2in the ignition
lock.
X Press the ¤button.
The indicator lamp above the ¤button
lights up or goes out.
Problems with the rea rwindow heating The rear window heating has switched off
prematurely or cannot be activated.
X
Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heating is activated again
automatically. Operating the climate control system
143Climate control Z