2016 MERCEDES-BENZ C CLASS climate control

Overrun mode or braking There are three possible operating modes when
the hybrid vehicle is decelerating: R
energy recovery takes place even when the
vehicle is decelerating purely in overrun mode
( Y
page 225). The electric motor operates as
a generator and stores the recovered energy
in the high-voltage battery R
when the brakes are applied lightly, the vehi-
cle is slowed down further by the electric
motor This increases the energy recovery tak-
ing place ( Y
page 225) The electric motor
operates as a generator and stores the recov-
ered energy in the high-voltage battery. R
when the brakes are applied with greater
force, the service brakes are also used to slow
the vehicle down. The two systems work
together
Urban driving Energy is recuperated during frequent deceler-
ation and stopping in city traffic.
The vehicle can be driven by the electric motor
alone up to a speed of approximately 120 km/ h.
The vehicle is driven by the electric motor alone
only when all conditions for the automatic
engine switch-off are fulfilled.
Further information on the automatic engine
switch-off ( Y
page 231).
Driving on inter-urban roads The following phases are possible when driving
on inter-urban roads: R
rapid acceleration (boost mode) R
constant energy consumption R
energy recuperation R
electric operation mode
A great deal of recovered energy may be avail-
able, depending on the route profile. This
reduces consumption and emissions.
Highway driving
During highway driving, fuel consumption and
emissions are favorably influenced in particular
by reduced power losses.
If the driver removes his foot from the acceler-
ator pedal in drive program E and a speed of
160 km/h is not exceeded, the combustion
engine is automatically switched off.
Further information on the automatic engine
switch-off ( Y
page 231). ECO start/stop function General notes The ECO start/stop function switches the inter-
nal combustion engine off automatically when
the vehicle stops moving and at high speeds
( Y
page 232).
All vehicle systems remain active, e.g. the auto-
matic climate control.
The ECO start/stop function is only available in
drive programs C and E . Electric-only operation
is only possible in drive programs C and E . Addi-
tional information for drive programs
( Y
page 229).
Automatic engine switch-off The engine is switched off automatically, includ-
ing when: R
the driver removes his foot from the acceler-
ator in drive program E and a speed of
160 km/h is not exceeded ( Y
page 232)R
the engine has reached its operating temper-
ature R
the driver’s seat belt is fastened and the
driver’s door is closed R
the driver only slightly depresses the accel-
erator pedal in order to, for example, maintain
the current speed for a limited distance R
the hood is closed and engaged properly R
the high-voltage battery is charged suffi-
ciently R
no malfunctions are present in the hybrid
drive system
The internal combustion engine will not be
switched off automatically, if: R
the self-diagnosis function of the engine con-
trol unit is still active R
there is a malfunction in the hybrid drive sys-
tem R
the climate control of the vehicle requires it R
the high-voltage battery is being charged
( Y
page 227) R
automatic emissions tests are runningPLUG ‑ IN HYBRID operation 231
Driving and parking Z

X
Use d or c to select the Hybrid sub-
menu. X
Press v to confirm.X
Press d or c to select the Max.
Charge Current function.
You will see the selected setting. X
Press the v button to save the setting.
Before charging the high-voltage battery, check
the maximum permissible charge current for the
relevant power socket.
The maximum charge current values in the on-
board computer may deviate from the charging
cable values.
Further information on charging the high-volt-
age battery (PLUG-IN HYBRID vehicles)
( Y
page 169).
Setting the departure time Using the "Setting departure time" function you
can: R
climatize the vehicle interior before depar-
ture. Further information on pre-entry climate
control ( Y
page 142).R
charge the high-voltage battery at minimum
cost before departure at an intelligent charg-
ing station.
The vehicle will calculate an optimal loading
plan. The charging process starts when the elec-
tricity is at the best price possible. As a result,
the high-voltage battery is charged with elec-
tricity at a favorable rate.
Please note that the high-voltage battery may
not be fully charged by the time of departure.
Depending on the condition of charge of the
high-voltage battery and the selected departure
time, the necessary charge time may not be suf-
ficient.
If you would like to charge the high-voltage bat-
tery for a short period of time, please use the
setting "set no departure time and charge imme-
diately".
The charging process will start immediately
when you charge the high-voltage battery at a
normal charging station and have already selec-
ted the departure time. X
Press the

Hybrid drive system Display messages
Possible causes/consequences and P Solutions
r Vehicle Operational
Switch the Ignition
Off Before Exiting PLUG-IN HYBRID vehicles:
You are exiting the vehicle when it is in a ready-to-drive state. The
READY indicator in the multifunction display is on. A warning tone also
sounds.
If you leave the vehicle: X
Secure the vehicle against rolling away ( Y
page 177).X
Switch off the ignition and remove the SmartKey.
If you do not leave the vehicle: X
Switch off the electrical consumers, e.g. automatic climate control,
seat heating.
Please note the following: The electrical consumers are supplied by
the 12 V battery. If the vehicle is left in a ready-to-drive state for an
extended period, it will switch off once the 12 V battery is almost
empty. It will then only be possible to start the vehicle using a second
battery (jump-starting).
Change the current
drive program
before changing the
operating mode. or
Exit manual drive
program M before
changing the operat‐
ing mode. PLUG-IN HYBRID vehicles:
You have attempted to change the operating mode in the automatic
drive program S (Sport), S+ (Sport Plus) or in the manual drive pro-
gram M . X
Activate drive program C (Comfort) or E (Economy) ( Y
page 229).X
Select the preferred operating mode HYBRID , E-MODE , E-SAVE or
CHARGE ( Y
page 226).
E-MODE Currently
Unavailable PLUG-IN HYBRID vehicles:
The condition of charge of the high-voltage battery has dropped to the
lower limit and the E-MODE operating mode has been switched off.
Driving with the internal combustion engine is activated and the oper-
ating mode switches to the basic HYBRID setting.X
Continue driving using the internal combustion engine.
You can switch to the E-SAVE or CHARGE operating mode as
required ( Y
page 226).
If you select CHARGE , the high-voltage battery is charged.
Once the charge level display for the high-voltage battery has
increased slightly, you can switch to the E-MODE operating mode
again.272
Display messages
On-board computer and displays

Settings in the climate menu Adjusting the climate mode settings By setting the climate mode you determine the
type of airflow. The setting is active when the air-
conditioning system is set to X
( Y
page 133). X
Call up the climate control menu
( Y
page 302). X
To select Climate Mode : turn and press the
controller. X
To change the setting: turn the controller.
Exiting a menu: X
Press the 8 button.
The current airflow setting is shown in the cli-
mate control bar: DIFFUSE , MEDIUM or FOCUS .
Starting/stopping the perfume atomizer The perfume atomizer makes it possible to scent
the air in individual compartments in the vehicle
interior. Further information ( Y
page 138).X
Call up the climate control menu
( Y
page 302). X
To select Air Freshener : turn and press the
controller.
The setting element is active. X
To start/stop the perfume atomizer: press
the controller. X
To set the intensity: turn the controller when
the atomizer is switched on.
Exiting a menu: X
Press the 8 button.
Switching the ionization on/off
The ionization has a cleansing effect on the air in
the vehicle interior. Further information
( Y
page 140). X
Call up the climate control menu
( Y
page 302). X
To select Ionization : turn and press the
controller.
The setting element is active. X
To switch the ionization on/off: press the
controller.
Exiting a menu: X
Press the 8 button. Activating or deactivating pre-entry cli-
mate control via the SmartKey This function is available for PLUG ‑ IN HYBRID
vehicles.
PLUG-IN HYBRID: before getting in, the driver's
seat area can be briefly warmed or ventilated in
advance with the air from the air vents being pre-
cooled. X
Call up the climate control menu
( Y
page 302). X
To select Pre-entry Climate Control
via Key : turn and press the controller. X
To activate or deactivate: turn the control-
ler.
Exiting a menu: X
Press the 8 button.
Activating or deactivating pre-entry cli-
mate control at departure time This function is available for PLUG ‑ IN HYBRID
vehicles.
You can climatize the driver's seat and the vehi-
cle interior in time for the departure time set. X
Call up the climate control menu
( Y
page 302). X
To select Pre-entry Climate Ctrl. at
Departure Time : turn and press the control-
ler.
A rotary menu appears. X
To select the desired setting: turn the con-
troller.
The menu symbol, text and image show the
selected setting. X
To exit a menu:
Press the 8 button.
Settings in the bottom bar of the cli-
mate control menu
Switching cooling with air dehumidifica-
tion on/off X
Call up the climate control menu
( Y
page 302). X
Slide 6 the controller repeatedly until the
bottom bar is activated. X
To select s A/C : turn and press the control-
ler. X
Switch cooling with air dehumidification on
s or off S .Operating system 303
Multimedia system Z

i The current status of the cooling function is
displayed in the climate control bar: A/C ON
– activated, A/C OFF – deactivated.
i Deactivating the cooling with air dehumidi-
fication function reduces fuel consumption.
Synchronizing the climate control set-
tings Use s Sync (synchronization) to select the cli-
mate control setting for all zones together s or
separately S .X
Call up the climate control menu
( Y
page 302).X
Slide 6 the controller repeatedly until the
bottom bar is activated. X
To select s Sync : turn and press the con-
troller. X
Switch the synchronization function on s or
off S .
For further information on synchronizing climate
control settings, see ( Y
page 135).
Navigation mode
Important safety notes
G WARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for the
country in which you are currently driving when
operating the navigation system.
General notes
Among other things, correct functioning of the
navigation system depends on GPS reception. In
certain situations, GPS reception may be
impaired, there may be interference or there
may be no reception at all, e.g. in tunnels or
parking garages. Audio 20 is equipped with MARGIN ®
MAP PILOT
(see the manufacturer's operating instructions).
The Garmin ®
MAP PILOT operating instructions
are stored on the SD memory card as a PDF file.
The SD card box contains a quick guide.
The following descriptions apply to navigation
with COMAND. Further information can be
found in the Digital Operator's Manual.
Selecting a route type and route options Multimedia system: X
Select Navi { Navigation .
The map shows the vehicle's current position. X
Slide 6 the controller. X
Select Options { Route Settings .
Notes for route types: R
Eco Route R
Dynamic Traffic Route
Traffic reports on the route for the route guid-
ance are taken into account. R
Calculate Alternative Routes
Different routes are being calculated. Instead
of Start select the Continue menu item.
Notes for route options: R
Use Toll Roads
The route calculation includes roads which
require you to pay a usage fee (toll). R
Use Vignette Roads (not available in all
countries)
The route calculation includes roads which
require you to pay a time-based fee (vignette).
A vignette allows temporary use of the route
network, e. g. 10 days or 1 year. R
Use Carpool Lanes (only available in the
USA)
Prerequisite: your vehicle meets the access
conditions for carpool lanes.
Carpool lanes will be included if the carpool
lanes option is activated.
Entering an address
Multimedia system: X
Select Navi { Navigation .
The map shows the vehicle's current position. X
Slide 6 the controller. X
Select Destination { Address Entry .304
Operating system
Multimedia system

i The coolant is checked with every mainte-
nance interval at a qualified specialist work-
shop.
Filling capacities Model Capacity
C 400 4MATIC
Mercedes-Benz
C 450 AMG 4MATIC 11.5 US qt (10.9 l)
Mercedes ‑ AMG
vehicles 11.7 US qt (11.1 l)
Al l ot her models
8.5 US qt (8.0 l)
Windshield/headlamp cleaning sys-
tem
Important safety notes
G WARNING
Windshield washer concentrate could ignite if
it comes into contact with hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or MB
WinterFit. Unsuitable washer fluid could dam-
age the plastic lenses of the headlamps.
! Do not add distilled or de-ionized water to
the washer fluid container. Otherwise, the
level sensor may be damaged.
! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
When handling washer fluid, observe the impor-
tant safety notes on service products
( Y
page 388).
At temperatures above freezing: X
Fill the washer fluid reservoir with a mixture of
water and windshield washer fluid, e.g. MB
SummerFit.
Add 1 part MB SummerFit to 100 parts water. At temperatures below freezing: X
Fill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-
mation on the antifreeze reservoir.
i Add windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round.
Climate control system refrigerant
Important safety notes The climate control system of your vehicle is fil-
led with refrigerant R ‑ 134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
! Only the refrigerant R ‑ 134a and the PAG oil
approved by Mercedes-Benz may be used.
The approved PAG oil may not be mixed with
any other PAG oil that is not approved for
R-134a refrigerant. Otherwise, the climate
control system may be damaged.
Service work, such as topping up refrigerant or
replacing components, may only be carried out
by a qualified specialist workshop. All applicable
regulations, as well as SAE standard J639, must
be adhered to.
Always have work on the climate control system
carried out at a qualified specialist workshop.
Refrigerant instruction label
Example: refrigerant instruction label
C
Warning symbol
D
Refrigerant filling capacity