2014 MERCEDES-BENZ C-CLASS SALOON air condition

Important safety notes
i
Observe the "Important safety notes" sec-
tion (Y page 74). G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid- ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
If ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information on the ABS warning lamp (Y page 355) and
display messages which may be shown in the
instrument cluster (Y page 315).
ABS works from a speed of about
8 km/hupwards, regardless of road-surface
conditions. ABS works on slippery surfaces,
even when you only brake gently.
Braking X
If ABS intervenes: continue to depress the
brake pedal with force until the braking sit-
uation 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 indica-
tion of hazardous road conditions, and func-
tions as a reminder to take extra care while
driving. BAS (Brake Assist)
General notes BAS operates in emergency braking situa-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the braking force,
thus shortening the stopping distance. Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 74). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking X
Keep the brake pedal depressed firmly until
the emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. BAS PLUS (Brake Assist PLUS) with
Cross-Traffic Assist
General notes i
Observe the "Important safety notes" sec-
tion (Y page 74).
BAS PLUS is only available on vehicles with
the Driving Assistance package.
For BAS PLUS to assist you when driving, the radar sensor system and the camera system
must be operational.
With the help of a sensor system and a cam-
era system, BAS PLUS can detect obstacles:
R that are in the path of your vehicle for an
extended period of time
R that cross the path of your vehicle
In addition, pedestrians in the path of your
vehicle can be detected.
BAS PLUS detects pedestrians using typical
characteristics such as the body contours
and posture of a person standing upright.
If the radar sensor system or the camera sys- tem is malfunctioning, BAS PLUS functions
are restricted or no longer available. The Driving safety systems
75Safety Z

ESP
®
trailer stabilisation General notes
If your vehicle/trailer combination begins to
lurch, ESP
®
assists you in this situation. ESP ®
slows the vehicle down by braking and limit-
ing the engine output until the vehicle/trailer combination has stabilised.
Important safety notes G
WARNING
If road and weather conditions are poor,
trailer stabilisation will not be able to prevent the vehicle/trailer combination from swerv-
ing. Trailers with a high centre of gravity can
tip over before ESP ®
can detect this. There is
a risk of an accident.
Always adapt your driving style to the prevail-
ing road and weather conditions.
If your vehicle/trailer combination begins to
lurch, you can only stabilise the vehicle/
trailer combination by depressing the brake
firmly.
ESP ®
trailer stabilisation is active above
speeds of approximately 65 km/h.
ESP ®
trailer stabilisation does not work if
ESP ®
is deactivated or disabled because of a
malfunction.
Crosswind Assist General notes
Strong crosswind gusts can impair the road-
holding of your vehicle when driving straight
ahead. The crosswind driving assistance
function integrated in ESP ®
noticeably
reduces these impairments.
Depending on the direction and intensity of
the side wind, ESP ®
is activated automati-
cally.
ESP intervenes with stabilising braking to
assist you in keeping the vehicle in the lane.
Crosswind Assist is active at vehicle speeds
above 80 km/h when driving straight ahead
or cornering gently. Important safety notes
Crosswind Assist does not work if ESP
®
is
deactivated or disabled because of a mal-
function. EBD (electronic brake force distribu-
tion)
General notes EBD monitors and controls the brake pres-
sure on the rear wheels to improve driving
stability while braking.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 74). G
WARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator and
warning lamps (Y page 355) as well as dis-
play messages (Y page 318). ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety
and offers increased braking comfort. In addi- tion to the braking function, ADAPTIVE BRAKE
also has the HOLD function (Y page 232) and
hill start assist (Y page 185). PRE-SAFE
®
Brake
General notes i
Pay attention to the important safety
notes in the "Driving safety systems" sec-
tion (Y page 74). 82
Driving safety systemsSafety

PRE‑SAFE
®
Brake is only available for vehi-
cles with the Driving Assistance package.
For PRE-SAFE ®
Brake to assist you when driv-
ing, the radar sensor system and the camera
system must be switched on and operational.
With the help of the radar sensor system and the camera system, PRE-SAFE ®
Brake can
detect obstacles that are in front of your vehi-
cle for an extended period of time.
In addition, pedestrians in the path of your
vehicle can be detected.
PRE-SAFE ®
Brake detects pedestrians using
typical characteristics such as the body con-
tours and posture of a person standing
upright.
Observe the restrictions described in the
"Important safety notes" sec-
tion“ (Y page 83).
PRE-SAFE ®
Brake can help you to minimise
the risk of a collision with a vehicle ahead or a pedestrian, and reduce the effects of such a
collision. If PRE-SAFE ®
Brake has detected a
risk of collision, you will be warned visually
and acoustically as well as by automatic brak- ing.
Important safety notes G
WARNING
PRE-SAFE ®
Brake will initially brake your vehi-
cle by a partial application of the brakes if a
danger of collision is detected. There may be
a collision unless you brake yourself. Even
after subsequent full application of the brakes
a collision cannot always be avoided, partic-
ularly when approaching at too high a speed.
There is a risk of an accident.
Always apply the brakes yourself and try to
take evasive action, provided it is safe to do
so. G
WARNING
PRE-SAFE ®
Brake cannot always clearly iden-
tify objects and complex traffic conditions. In these cases, PRE-SAFE
®
Brake may:
R give an unnecessary warning and then
brake the vehicle
R neither give a warning nor intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and be ready to brake, especially if
PRE-SAFE ®
Brake warns you. Terminate the
intervention in a non-critical driving situation.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent a col- lision, you must apply the brakes yourself.
The PRE-SAFE ®
Brake function can also brake
the vehicle automatically under the following
conditions:
R the driver and front passenger have their
seat belts fastened
and
R the vehicle speed is between approx-
imately 7 km/h and 200 km/h
At a speed of up to approximately 70 km/h,
PRE-SAFE ®
Brake can also detect:
R stationary objects in the path of your vehi-
cle, e.g. stopped or parked vehicles
R pedestrians in the path of your vehicle G
WARNING
PRE-SAFE ®
Brake does not react:
R to small people, e.g. children
R to 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 sit-
uations. There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
In the event of snowfall or heavy rain, detec-
tion can be impaired. Driving safety systems
83Safety Z

The seat belt should:
R fit snugly across your body
R be routed across the middle of your shoul-
der
R be routed across your hips in the pelvic
area
X Before starting off, adjust the rear-view mir-
ror and the exterior mirrors so that you
have a good view of the road and traffic
conditions (Y page 128).
X Vehicles with memory function: you can
store the seat, steering wheel, exterior mir-
ror and head-up display settings with the
memory function (Y page 131). Seats
Important safety notes
G
WARNING
If children adjust the seats, they could
become trapped, especially if they are unat-
tended. There is a risk of injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle.
The seats can still be adjusted when there is
no key in the ignition lock. G
WARNING
When adjusting a seat, you or another vehicle occupant could become trapped by the guiderail of the seat, for instance. There is a risk of
injury.
Make sure that no one has any part of their
body within the sweep of the seat when
adjusting it.
Observe the safety notes on "Airbags"
(Y page 51) and "Children in the Vehicle"
(Y page 63). G
WARNING
If the driver's seat is not engaged, it can move unexpectedly while the vehicle is in motion. This could cause you to lose control of the
vehicle. There is a risk of an accident.
Always make sure that the driver's seat is
engaged before starting the engine.
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
If you adjust the seat height carelessly, you or other vehicle occupants could be trapped andthereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem. G
WARNING
The head restraints cannot provide the inten-
ded protection unless they are fitted and
adjusted correctly. There is an increased risk of injury to the head and neck in the event of
an accident or sudden braking, for example.
Always drive with the head restraints fitted.
Ensure that the centre of the head restraints
support the back of each vehicle occupant's
head at eye level before driving off. G
WARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain Seats
119Seats, steering wheel and mirrors
Z

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 27). Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R switch on air-recirculation mode only
briefly
R switch on the cooling with air dehumidifi-
cation function
R switch on the "demist windscreen" function
briefly, if required
Climate control regulates the temperature
and air humidity in the vehicle interior. The
interior filter cleans the air, thus improving
the interior climate.
For vehicles without hybrid drive, the "Cooling with air dehumidification" function is availa-
ble when the engine is running. For hybrid
vehicles, the cooling with air dehumidification function is also available via the electric
refrigerant compressor when the engine is
not running. Optimum climate control is only
achieved with the side windows and roof
closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 166). i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 107).
This will speed up the cooling process and
the desired interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. It also reduces gaseous pol-
lutants and odours. A clogged filter reduces
the amount of air supplied to the vehicle
interior. For this reason, you should always observe the interval for replacing the filter,which is specified in the Service Booklet. As this depends on environmental conditions,
e.g. heavy air pollution, the interval may be
shorter than stated in the Service Booklet.
i It is possible that the blower may be acti-
vated automatically 60 minutes after the
key has been removed depending on vari-
ous factors, e.g. the outside temperature.
The vehicle is then ventilated for
30 minutes to dry the automatic climate
control. 150
Overview of climate control systemsClimate control

mode. If necessary, activate this function
(Y
page 157).
R Set the temperature to 22 †.
R Only use the windscreen demisting func-
tion briefly until the windscreen is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odours or
when in a tunnel. The windows could oth-
erwise mist up as no fresh air is drawn into
the vehicle in air-recirculation mode.
R Use the residual heat function if you want to
heat or ventilate the vehicle interior when
the ignition is switched off. The residual
heat function can only be activated or deac- tivated with the ignition switched off. The
residual heat function is deactivated when
the ignition is switched on.
AGILITY SELECT switch You can choose between various drive pro-
grams with the AGILITY SELECT switch.
R Manual transmission (Y page 191)
R Automatic transmission (Y page 197)
If you have selected drive program E, the cli-
mate control switches to Eco mode.
In Eco mode:
R the cooling output is reduced when cooling
R when heating, the electrical heater booster
is deactivated and heat output is reduced
as a result
R the rear window heating running time is
reduced
If you have selected drive program C,Sor S+
the climate control switches to Comfort
mode. The current climate control settings
are maintained in Comfort mode.
ECO start/stop function During automatic engine switch-off, the cli-
mate control only operates at a reduced capa- city. If you require the full climate control out-
put, you can switch off the ECO start/stop function by pressing the ECO button
(Y
page 187).
Hybrid vehicles The cooling with air dehumidification function
is available when the vehicle is operational
and the READY indicator is lit (Y page 276).
If the internal combustion engine has been
shut off automatically, the set interior tem-
perature will be maintained for a certain
period of time. Operating the climate control system
Switching climate control on/off
General notes When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could mist up.
Therefore, only switch off climate control
briefly.
Switch on climate control primarily using the à rocker switch (Y page 159).
Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 181).
X To switch on: press thet/!
rocker switch up or down.
The Audio 20/COMAND Online climate
control menu opens.
X Activate the climate control using the air-
conditioning function bar; see the separate
Audio 20/COMAND Online operating
instructions.
or
X Set the airflow to level 1 or higher using the
H button. 156
Operating the climate control systemClimate control

X
To switch off: press thet/!
rocker switch up or down.
The Audio 20/COMAND Online climate
control menu opens.
X Deactivate the climate control using the
air-conditioning function bar; see the sep-
arate Audio 20/COMAND Online operating
instructions.
or
X Set the airflow to level 0 using the H
rocker switch. Activating/deactivating the cooling
with air dehumidification function
General notes If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi- cle will not be cooled. The air inside the vehi-
cle will also not be dehumidified. The win-
dows can mist up more quickly. Therefore,
deactivate the "Cooling with air-dehumidifi-
cation" function only briefly.
For vehicles without hybrid drive, the "Cooling with air dehumidification" function is availa-
ble when the engine is running. For hybrid
vehicles, the cooling with air dehumidification function is also available via the electric
refrigerant compressor when the engine is
not running. The air inside the vehicle is
cooled and dehumidified according to the
temperature selected.
Condensation may drip from the underside of
the vehicle when cooling mode is active. This is normal and not a sign that there is a mal-
function. Activating/deactivating THERMATIC automatic climate control
X To activate: press the¿rocker switch
up or down.
The indicator lamp above the rocker switch lights up.
or
X Activate the cooling with air dehumidifica-
tion function via Audio 20/COMAND
Online (see the separate operating instruc-
tions).
X To deactivate: press the¿rocker
switch up or down.
The indicator lamp above the rocker switch
goes out.
or
X Deactivate the cooling with air dehumidifi-
cation function via Audio 20/COMAND
Online (see the separate operating instruc-
tions).
THERMOTRONIC automatic climate con-
trol without auxiliary heating
X To activate: press the¿rocker switch
up or down.
The indicator lamp above the rocker switch lights up.
or
X Activate the cooling with air dehumidifica-
tion function via Audio 20/COMAND
Online (see the separate operating instruc-
tions).
X To deactivate: press the¿rocker
switch up or down.
The indicator lamp above the rocker switch
goes out.
or X Deactivate the cooling with air dehumidifi-
cation function via Audio 20/COMAND
Online (see the separate operating instruc-
tions). Operating the climate control system
157Climate control

Activating/deactivating
X
Turn the key to position 0in the ignition
lock or remove it (Y page 181).
X To activate: press the!rocker switch
up or down.
The indicator lamp above the !rocker
switch lights up.
The blower will run at a low speed regardless of the airflow setting.
If you activate the residual heat function at
high temperatures, only the ventilation will be
activated. The blower runs at medium speed.
X To deactivate: press the!rocker
switch up or down.
The indicator lamp above the !rocker
switch goes out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is switched on Perfume atomiser
Operating the perfume atomiser G
WARNING
If children open the perfume vial, they could
drink the perfume or it could come into con-
tact with their eyes. There is a risk of injury. Do not leave children unsupervised in the vehicle.
If the perfume liquid has been drunk, consult
a doctor. If perfume comes into contact with
your eyes or skin, rinse the eyes with clean
water. If you continue to experience difficul-
ties, consult a doctor. H
Environmental note Full perfume vials must not
be disposed of with house-
hold rubbish. They must be
collected separately and dis-
posed of in an environmen- tally responsible recycling
system.
Dispose of full perfume vials
in an environmentally
responsible manner and
take them to a special waste
collection point. :
Perfume lid
; Perfume vial
The perfume atomiser helps to improve driv-
ing comfort.
Using Audio 20/COMAND Online, you can:
R switch the perfume atomiser on/off (see
separate Audio 20/COMAND Online oper-
ating instructions)
R regulate the perfume intensity (see the sep-
arate Audio 20/COMAND Online operating
instructions)
The following conditions can affect your per-
ception of the perfume intensity:
R operating mode of the automatic climate
control
R interior temperature
R time of year/day
R air humidity
R physiological condition of occupants, e.g.
fatigue or hunger
The perfume atomiser can only be operated
when the automatic climate control is
switched on and is only active when the glove compartment is closed.
The perfume atomiser is provided with a pre-
filled perfume vial. You can also choose from Operating the climate control system
167Climate control Z