2016 MERCEDES-BENZ C-Class SEDAN Start system

Notes on using automatic climate
control
Optimum use of the automatic climate
control
The following contains notes and recommenda-
tions on optimum use of the dual-zone or 3-zone
automatic climate control.
RActivate climate control using the Ã
rocker switch. The indicator lamp above the
à rocker switch lights up. The "Cooling
with air dehumidification" function is not acti-
vated automatically in automatic mode. If
necessary, activate this function
(
Ypage 133).
RSet the temperature to 72 ‡ (22 †).
ROnly use the "Windshield defrosting" function
briefly until the windshield is clear again.
ROnly use air-recirculation mode briefly, e.g. if
there are unpleasant outside odors or when in
a tunnel. The windows could otherwise fog up,
since no fresh air is drawn into the vehicle in
air-recirculation mode.
RVehicles with 3-zone automatic climate con-
trol or PLUG-IN HYBRID: 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 deactivated with the igni-
tion switched off. The residual heat function is
switched off when the ignition is switched on.
DYNAMIC SELECT switch (except
Mercedes-AMG vehicles)
You can choose between various drive programs
with the DYNAMIC SELECT switch
(
Ypage 154).
If you have selected drive program E:
Rthe cooling output is reduced when cooling
Rwhen heating, the electrical heater booster is
deactivated and heat output is reduced as a
result
Rthe rear window defroster running time is
reduced
If you have selected drive program C,S or S+ ,
the current climate settings are maintained.
ECO start/stop function
During automatic engine switch-off, the climate
control system only operates at a reduced capa-
city. If you require the full climate control output,
you can switch off the ECO start/stop function
by pressing the ECO button (
Ypage 151).
Operating the climate control sys-
tems
Activating/deactivating climate con-
trol
General notes
When the climate control is switched off, the air
supply and air circulation are also switched off.
The windows could fog up. Therefore, switch off
climate control only briefly
Switch on climate control primarily using the
à rocker switch (
Ypage 133).
Switching on/off
XTurn the SmartKey to position 2in the ignition
lock (Ypage 146).
XTo switch on: set the airflow to level 1 or
higher using the Hrocker switch.
XTo switch off: set the airflow to level 0 using
the H rocker switch.
i3-zone automatic climate control: when cli-
mate control is switched off, "OFF" appears in
the rear-compartment display.
132Operating the climate control systems
Climate control

above theÃrocker switch goes out. The
function which has not been changed manually,
however, continues to be controlled automati-
cally. When the manually set function switches
back to automatic mode, the indicator lamp
above the Ãrocker switch lights up again.
Adjusting the climate mode settings
This function is only available with dual-zone
automatic climate control on vehicles for Can-
ada.
In automatic mode you can select the following
airflow settings for the driver's and front-
passenger areas:
FOCUS high airflow, slightly cooler setting
MEDIUM medium airflow, standard setting
DIFFUSEl ow airflow, slightly warmer and draft-
free setting
XTo set: set the climate mode using the mul-
timedia system (Ypage 303).
Setting the temperature
Dual-zone automatic climate control
Dual-zone automatic climate control: the tem-
perature for the driver's and front-passenger
side can be set individually.
XTurn the SmartKey to position 2in the ignition
lock (Ypage 146).
XTo increase or reduce: press thew
rocker switch up or down.
Only change the temperature setting in small
increments. Start at 72 ‡ (22 †).
3-zone automatic climate control
General notes
You can select different temperature settings
for the driver's and front-passenger sides as well as for the rear compartment.
Setting the temperature in the front com-
partment using the front control panel
XTurn the SmartKey to position 2in the ignition
lock (Ypage 146).
XTo increase or reduce: press thew
rocker switch up or down. Only change the temperature setting in small
increments. Start at 72 ‡ (22 †).
Setting the temperature in the rear com-
partment using the rear control panel
XTurn the SmartKey to position
2in the ignition
lock (Ypage 146).
XTo increase or reduce: press the upper or
lower section of the wrocker switch on
the rear control panel (
Ypage 131).
Only change the temperature setting in small
increments. Start at 72 ‡ (22 †).
The set temperature appears on the rear-
compartment display.
Setting the air distribution
Air distribution settings
¯ Directs air through the defroster vents
P Directs air through the center and side air
vents
O Directs air through the footwell air vents
S Directs air through the center, side and
footwell vents
a Directs air through the defroster and
footwell vents
_ Directs air through the defroster, center,
side and footwell vents
b Directs air through the defroster, center
and side air vents
W Sets the air distribution to automatic
Setting
3-zone automatic climate control: you can set
the air distribution separately for the driver's
and front-passenger side.
XTurn the SmartKey to position 2
(Ypage 146).
XPress the _rocker switch up or down.
The various air distribution settings appear in
the multimedia system.
134Operating the climate control systems
Climate control

Pre-entry climate control via SmartKey
General notes
The "Pre-entry climate control via SmartKey" function is only available in PLUG-IN HYBRID vehicles.
Before getting in, the driver's seat area or the whole interior can be briefly warmed or ventilated in
advance with the air from the air vents being pre-cooled.
The high-voltage battery must be sufficiently charged before "Pre-entry climate control via Smart-
Key" can be activated.
When the vehicle is pre-cooled, the following functions are activated if required:
RClimate control system
RBlower
RSeat ventilation
When the vehicle is pre-heated, the following functions are activated if required:
RClimate control system
RBlower
RSeat heating
RSteering wheel heating
RExterior mirror heating
RRear window defroster
If you have switched on the perfume atomizer or ionization using the multimedia system, these will be activated together with pre-entry climate control.
Activate the perfume atomizer (
Ypage 303).
Activate ionization (
Ypage 303).
Activating or deactivating "Pre-entry climate control via SmartKey"
Before "Pre-entry climate control via SmartKey" can be activated, you must activate the function via
the multimedia system (Ypage 303).
XTo activate pre-entry climate control via SmartKey: unlock the vehicle with the SmartKey or
KEYLESS-GO.
The climate control functions are activated for up to 5 minutes for pre-heating and pre-cooling.
To deactivate "Pre-entry climate control via SmartKey": "Pre-entry climate control via Smart-
Key" switches off automatically when the engine is started.
The following functions remain active after the engine is started:
RSeat heating (heating)
RSeat ventilation (ventilation)
RPerfume atomizer
RIonization
An activated "Pre-entry climate control via SmartKey" function can be deactivated using the rocker
switch (
Ypage 143).
Operating the climate control systems141
Climate control
Z

Problems with "Pre-entry climate control via SmartKey"
ProblemPossible causes/consequences andMSolutions
"Pre-entry climate con-
trol via SmartKey" can-
not be switched on or
has switched itself off.The condition of charge of the high-voltage battery is under the speci-
fied minimum condition of charge.
XStart the engine when the vehicle is at a standstill.
The engine powers the electric motor. The electric motor operates
as a generator. The high-voltage battery is being charged.
Further information on charging the high-voltage battery via:
Ra mains socket (Ypage 171)
Ra charging station (Ypage 174)
Ra wallbox (Ypage 173)
"Pre-entry climate control via SmartKey" has been started more than
twice with the engine switched off.
XSwitch on the engine and let it run for more than ten seconds.
XTry again to switch on "Pre-entry climate control via SmartKey".
Pre-entry climate control at time of
departure
Important safety notes
GWARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
General notes
The "Pre-entry climate control at departure
time" function is only available in PLUG-IN
HYBRID vehicles.
You can use the "Pre-entry climate control at
departure time" function to cool or heat the
vehicle interior if the engine is not running.
The "Pre-entry climate control at departure
time" function can be activated regardless of
whether or not the vehicle is connected to an
electric power supply. The condition of charge of
the high-voltage battery must be higher than the
specified minimum condition of charge, how-
ever.
When the vehicle is connected to an electric
power supply, priority is given to charging the
high-voltage battery to the specified minimum charge. "Pre-entry climate control at departure
time" is only activated subsequently.
The running time of the "Pre-entry climate con-
trol at departure time" function may be reduced
if:
Rthe vehicle is not connected to an electric
power supply and
Rthe high-voltage battery is not fully charged
With active "Pre-entry climate control at depar-
ture time" the condition of charge of the high-
voltage battery can be reduced, even if the
charge cable connector is connected.
When the vehicle is cooled, the following func-
tions are activated if required:
RClimate control system
RBlower
RSeat ventilation
When the vehicle is heated, the following func-
tions are activated if required:
RClimate control system
RBlower
RSeat heating
RSteering wheel heating
RExterior mirror heating
RRear window defroster
If you have switched on the perfume atomizer or
the ionization using the multimedia system,
these will be activated together with the "Pre-
entry climate control at departure time".
142Operating the climate control systems
Climate control

Activate the perfume atomizer (Ypage 303).
Activate ionization (
Ypage 303).
Setting the departure time
You can set the departure time using the on-
board computer or via the online access to the
vehicle. The activation of the "Pre-entry climate
control at departure time" function can be linked
to this departure time. Your vehicle will then be
cooled or heated until the desired temperature
is reached in time for the set departure time.
"Pre-entry climate control at departure time" will
be activated a maximum of 55 minutes before
departure. If the departure is delayed, the vehi-
cle will be heated or cooled for another five
minutes.
XTo set the departure time: set the departure
time using the on-board computer
(
Ypage 249). Set the departure time via the
online access to the vehicle (Ypage 176).
XTo activate or deactivate "Pre-entry cli-
mate control at departure time": activate
or deactivate "Pre-entry climate control at
departure time" via the multimedia system
(
Ypage 303). Set the "Pre-entry climate con-
trol at departure time" via the online access to
the vehicle (
Ypage 176).
When activating the "Pre-entry climate control
at departure time" function: you can select
whether only the driver's area or also the front-
passenger area should be heated or cooled.
The "Pre-entry climate control at departure
time" function sw
itches off automatically when
the vehicle is started. The following functions
remain active:
RSeat heating
RSeat ventilation
RSteering wheel heating
RPerfume atomizer
RIonization
Switching off "Pre-entry climate control at
departure time": the activated "Pre-entry cli-
mate control at departure time" can be switched
off using the rocker switch (
Ypage 143).
Activating or deactivating "Immediate
pre-entry climate control" using the
rocker switch
You can activate "Immediate pre-entry climate
control" even if the vehicle interior is already at the desired temperature. This means, for exam-
ple, that the vehicle interior continues to be
cooled or heated if the journey is interrupted for
up to 50 minutes and the interior temperature is
kept constant.
XTo activate or deactivate "Immediate pre-
entry climate control": press rocker
switch :up or down.
The blue or red indicator lamp above the
rocker switch lights up or goes out.
The colors of the indicator lamps in rocker
switch :have the following meanings:
Rblue: cooling activated
Rred: heating activated
Ryellow: departure time is preselected
Air vents
Important safety notes
GWARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
Rkeep the air inlet between the windshield and
the hood free of blockages, such as ice, snow or leaves.
Rnever cover the air vents or air intake grilles in
the vehicle interior.
Air vents143
Climate control
Z

GWARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake can:
Roverheat and cause a fire
Rlose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
!Do not warm up the engine with the vehicle
stationary. Drive off immediately. Avoid high
engine speeds and driving at full throttle until
the engine has reached its operating temper-
ature.
Only shift the automatic transmission to the
desired drive position when the vehicle is sta-
tionary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
!Mercedes-AMG vehicles: at low engine oil
temperatures below 68 ‡ (+20 †), the max-
imum engine speed is restricted in order to
protect the engine. To protect the engine and
maintain smooth engine operation, avoid driv-
ing at full throttle when the engine is cold.
Observe the important safety notes for PLUG-IN
HYBRID vehicles (
Ypage 44).
SmartKey positions
SmartKey
gTo remove the SmartKey
1Power supply for some consumers, such as
the windshield wipers
2Ignition (power supply for all consumers)
and drive position
3To start the engine
iThe SmartKey can be turned in the ignition
lock even if it is not the correct SmartKey for
the vehicle. The ignition is not switched on.
The engine cannot be started.
Vehicles with AIRPANEL: you can open the
shutters in the radiator trim by turning the
SmartKey to position 2in the ignition lock. After
approximately 120 seconds the shutters open
automatically. Further information on opening
and cleaning the shutters (
Ypage 339).
Start/Stop button
General notes
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
two seconds recognition time. You can then use
the Start/Stop button.
Pressing the Start/Stop button several times in
succession corresponds to the different key
positions in the ignition lock. This is only the
case if you are not depressing the brake pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example, when
starting the engine.
146Driving
Driving and parking

Starting the engine
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
!Do not depress the accelerator when start-
ing the engine.
General notes
The catalytic converter is preheated for up to
30 seconds after a cold start. The sound of the
engine may change during this time.
Automatic transmission
XShift the transmission to position P
(Ypage 156).
The transmission position display in the mul-
tifunction display shows P(
Ypage 157).
iYou can start the engine in transmission
position Pand N.
Starting procedure with the SmartKey
To start the engine using the SmartKey instead
of the Start/Stop button, pull the Start/Stop
button out of the ignition lock.
XTurn the SmartKey to position 3in the ignition
lock and release it as soon as the engine is
running (
Ypage 146).
If the engine will not start:
XRemove the SmartKey from the ignition lock.
XReinsert the SmartKey into the ignition lock
after a short waiting period.
XTurn the SmartKey to position 2in the ignition
lock (Ypage 146).
The indicator lamps in the instrument cluster
light up (
Ypage 286).
XTurn the SmartKey to position 3in the ignition
lock (Ypage 146) and release it as soon as the
engine is running.
Starting procedure with the Start/Stop
button
The Start/Stop button is only available on vehi-
cles with KEYLESS-GO or the KEYLESS-GO start
function.
The Start/Stop button can be used to start the
vehicle manually without inserting the SmartKey
into the ignition lock. The Start/Stop button
must be inserted in the ignition lock and the
SmartKey must be in the vehicle. This mode for
starting the engine operates independently of
the ECO start/stop automatic engine start func-
tion.
You can start the engine if a valid SmartKey is in
the vehicle. Switch off the engine and always
take the SmartKey with you when leaving the
148Driving
Driving and parking

vehicle, even if you only leave it for a short time.
Pay attention to the important safety notes.
XDepress the brake pedal and keep it
depressed.
XPress the Start/Stop button once
(Ypage 146).
The engine starts.
Starting procedure via smartphone
Observe the important safety notes on starting
the engine (Ypage 148).
You can also start your engine via your smart-
phone from outside the vehicle. In this case, the
previously selected climate control setting is
activated. In this way you can cool or heat the
interior of the vehicle before starting the jour-
ney.
Only start the engine via your smartphone if it is
safe to start and run the engine where your vehi-
cle is parked.
Observe the legal stipulations in the area where your vehicle is parked. Engine start via smart-
phone may be limited to certain countries or
regions.
You can execute a maximum of two consecutive
starting attempts via your smartphone. If you
insert the SmartKey into the ignition lock, you
can carry out two more starting attempts.
Once you have started the engine, you can
switch the engine off via your smartphone at any
time.
You can only start the engine via your smart-
phone if:
Rthe SmartKey is in the ignition lock
Rpark position Pis selected
Rthe accelerator pedal is not depressed
Rthe anti-theft alarm system is not activated
Rthe panic alarm is not activated
Rthe hazard warning lamps are switched off
Rthe hood is closed.
Rthe doors are closed and locked
Rthe windows and sliding sunroof are closed
Also make sure that:
Rthe fuel tank is sufficiently filled
Rthe starter battery is sufficiently charged
GWARNING
Limbs could be crushed or trapped if the
engine is started unintentionally during ser-
vice or maintenance work. There is a risk of
injury.
Always secure the engine against uninten-
tional starting before carrying out mainte-
nance or repair work.
Make sure that the engine cannot be started via
your smartphone before carrying out mainte-
nance or repairs. You can prevent an engine
start via your smartphone, for example, if you:
Rswitch on the hazard warning lamps
Rdo not lock the doors
Ropen the hood.
Pulling away
General notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
Depress the accelerator carefully when pulling
away.
The vehicle locks centrally once you have pulled
away. The locking knobs in the doors drop down.
You can open the doors from the inside at any
time.
You can also deactivate the automatic locking
feature, see the Digital Operator's Manual.
It is only possible to shift the transmission from
position Pto the desired position if you depress
the brake pedal. Only then is the parking lock
released. If you do not depress the brake pedal,
the DIRECT SELECT lever can still be moved but the parking lock remains engaged.
iUpshifts take place at higher engine speeds
after a cold start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Information on the automatic release of the
electric parking brake (
Ypage 178).
Driving149
Driving and parking
Z