heating MERCEDES-BENZ C-CLASS SALOON 2014 User Guide

abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest is in an almost vertical position and that the
shoulder section of your seatbelt is routed
across the centre of your shoulder.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see "Interior care".
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools. The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating mate- rials, e.g. blankets, coats, bags, seat cov-
ers, child seats or booster seats.
! Make sure that there are no objects in the
footwell under or behind the seats when
moving the seats back. There is a risk that
the seats and/or the objects could be dam-
aged.
i The rear-compartment head restraints
can be removed (Y page 122).
Vehicles without the through-loading fea-
ture: the head restraints cannot be
removed from the rear compartment seats. For more information, contact a qualified
specialist workshop.
i Further related subjects:
R Rear bench seat through-loading feature
(Y page 371) Adjusting the seats manually and
electrically
Adjusting the front seat Vehicles without the seating comfort
package
:
Backrest angle
; Seat height
= Seat fore-and-aft adjustment
Vehicles with the seating comfort pack-
age :
Backrest angle
; Seat height
= Seat cushion angle
? Seat fore-and-aft adjustment
A Seat cushion length
i In vehicles with the seating comfort pack-
age, the seat cushion length can only be
adjusted manually. 120
SeatsSeats, steering wheel and mirrors

X
Release the rear seat backrest and fold it
slightly forwards (Y page 372).
X To remove: pull the head restraint up to
the stop.
X Press release catch :and pull the head
restraint out of the guides.
X To refit: insert the head restraint so that
the notches on the bar are on the left when
viewed in the direction of travel.
X Push the head restraint down until you hear
it engage in position.
X Fold back the rear seat backrest until it
engages. Adjusting the 4-way lumbar support
:
To raise the backrest contour
; To soften the backrest contour
= To lower the backrest contour
? To harden the backrest contour
You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back. Switching the seat heating on/off
Activating/deactivating G
WARNING
If you repeatedly switch on seat heating, the
seat cushion and backrest padding may
become very hot. The health of vehicle occu-
pants with limited temperature sensitivity or a limited ability to react to excessively high temperatures may be affected or they may
even suffer burn-like injuries. There is a risk of
injury.
Therefore, do not switch on the seat heating
repeatedly. The three red indicator lamps in the button
indicate the heating level you have selected.
The system automatically switches from level
3 to level 2after approximately eight
minutes.
The system automatically switches from level 2 to level 1after approximately ten minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
X Turn the key to position 1or 2in the ignition
lock (Y page 181).
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
i If drive program Eis selected, the power
of the seat heating is reduced.
R Manual transmission (Y page 192)
R Automatic transmission (Y page 197) Seats
123Seats, ste ering wheel and mirrors Z

Problems with the seat heating
Problem
Possible causes/consequences and
M
MSolutions The seat heating has
switched off prema-
turely or cannot be
switched on. The on-board voltage is too low because too many electrical con-
sumers are switched on.
X Switch off electrical consumers that you do not need, such as
the rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat heating can be
switched back on manually. Switching the seat ventilation on/off
Activating/deactivating The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
X Turn the key to position 1or 2in the ignition
lock (Y page 181).
X To switch on: press button:repeatedly
until the desired ventilation level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (Y page 107). The seat
ventilation of the driver's seat automati-
cally switches to the highest level.
i When the vehicle is stationary, the fan
speed can be reduced automatically. This
reduces the noises of the seat ventilation. 124
SeatsSeats, steering wheel and mirrors

Problems with the seat ventilation
Problem
Possible causes/consequences and
M
MSolutions The seat ventilation has
switched off prema-
turely or cannot be
switched on. The on-board voltage is too low because too many electrical con-
sumers are switched on.
X Switch off electrical consumers that you do not need, such as
the rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat ventilation can
be switched back on. Steering wheel
Important safety notes
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
Children could become trapped by the steer-
ing wheel if they adjust it. 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 electrically adjustable steering wheel can
still be adjusted when there is no key in the
ignition lock. Adjusting the steering wheel man-
ually
:
Release lever
; To adjust the steering wheel height
= To adjust the steering wheel position
(fore-and-aft adjustment)
X Push release lever :down completely.
The steering column is unlocked.
X Adjust the steering wheel to the desired
position.
X Push release lever :up completely.
The steering column is locked.
X Check if the steering column is locked.
When doing so, try to push the steering
wheel up or down or try to move it in the
fore-and-aft direction. Steering wheel
125Seats, steering wheel and mirrors Z

Adjusting the exterior mirrors
X
Turn the key to position 1or 2in the ignition
lock (Y page 181).
X Press button ;for the right-hand exterior
mirror or button =for the left-hand exte-
rior mirror.
The indicator lamp lights up in the button
that has been pressed.
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.
X Press 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 if the
rear window heating is switched on and the
outside temperature is low. Folding the exterior mirrors in/out elec-
trically X
Turn the key to position 1or 2in the ignition
lock (Y page 181).
X Briefly press button :.
Both exterior mirrors fold in or out.
i Make sure that the exterior mirrors are
always folded out fully while driving. They
could otherwise vibrate.
i If you are driving faster than 47 km/h, you
can no longer fold in the exterior mirrors.
Resetting the exterior mirrors If the battery has been disconnected or com-
pletely discharged, the exterior mirrors must
be reset. The exterior mirrors will otherwise
not fold in when you select the Automatic Automatic
mirror-folding function
mirror-folding function function in the
on-board computer.
X Turn the key to position 1or 2in the ignition
lock (Y page 181).
X Briefly press button :.
Folding the exterior mirrors in/out
automatically If the
Automatic mirror-folding func‐ Automatic mirror-folding func‐
tion
tion function is activated in COMAND Online
or Audio 20 (see the separate COMAND
Online or Audio 20 operating instructions), 128
MirrorsSeats
, steering wheel and mirrors

G
WARNING
If children activate the memory function, they
could become trapped, especially if they are
unattended. 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. Storing settings
With the memory function, you can store up
to three different settings, e.g. for three dif-
ferent people.
The following settings are stored as a single
memory preset:
R position of the seat, backrest and head
restraint
R seat heating: cushion surfaces
R driver's side: position of the exterior mir-
rors on the driver's and front-passenger
sides
R position of the head-up display X
Adjust the seat accordingly (Y page 121).
X On the driver's side, adjust the steering
wheel (Y page 126) and the exterior mirrors
(Y page 128).
X Press memory button Mand then press
storage position button 1,2or 3within
three seconds.
The settings are stored in the selected pre- set position. A tone sounds when the set-
tings have been completed. Calling up a stored setting
X Press and hold the relevant storage posi-
tion button 1,2or 3until the
R seat
R steering wheel
R exterior mirrors
R head-up display
are in the stored position.
i The steering wheel and seat adjustment
procedure is interrupted as soon as you
release the storage position button. The
adjustment of the mirror is still carried out. Memory function
131Seats, steering wheel and mirrors Z

Control panel for THERMATIC automatic climate control (2-zone)
Vehicles with auxiliary heating
:
To set the temperature, left (Y page 160)
; To set the air distribution (Y page 161)
= To set the airflow (Y page 162)
To switch the climate control off (Y page 156)
? To set climate control to automatic mode (Y page 159)
A To demist the windscreen (Y page 163)
B To call up the Audio 20/COMAND Online climate control menu; see the separate operating
instructions
To activate/deactivate the residual heat function (Y page 166)
C To switch the rear window heating on/off (Y page 164)
D To switch the auxiliary heating on/off (Y page 172)
E To activate/deactivate air-recirculation mode manually (Y page 165)
F To activate/deactivate cooling with air dehumidification (Y page 157)
G To set the temperature, right (Y page 160) Overview of climate control systems
151Climate control

Vehicles without auxiliary heating
:
To set the temperature, left (Y page 160)
; To set the air distribution (Y page 161)
= To set the airflow (Y page 162)
To switch the climate control off (Y page 156)
? To set climate control to automatic mode (Y page 159)
A To demist the windscreen (Y page 163)
B To call up the Audio 20/COMAND Online climate control menu; see the separate operating
instructions
C To switch the rear window heating on/off (Y page 164)
D To activate/deactivate synchronisation (Y page 162)
E To activate/deactivate air-recirculation mode manually (Y page 165)
F To activate/deactivate cooling with air dehumidification (Y page 157)
G To set the temperature, right (Y page 160)Information on using THERMATIC
automatic climate control
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 Ã
rocker switch. The indicator lamp above
the à rocker switch lights up. The "Cool-
ing with air dehumidification" function is
not activated automatically in automatic 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. 152
Overview of climate control systemsClimate control

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. Overview of climate control systems
153Climate control

Control panel for THERMOTRONIC automatic climate control (3-zone)
Vehicles with auxiliary heating
Front control panel
: To set the temperature, left (Y page 160)
; To set the air distribution, left (Y page 161)
= To set the airflow (Y page 162)
To switch the climate control off (Y page 156)
? To set climate control to automatic mode (Y page 159)
A To demist the windscreen (Y page 163)
B To call up the Audio 20/COMAND Online climate control menu; see the separate operating
instructions
To activate/deactivate the residual heat function (Y page 166)
C To switch the rear window heating on/off (Y page 164)
D To switch the auxiliary heating on/off (Y page 172)
E To activate/deactivate air-recirculation mode manually (Y page 165)
F To set the air distribution, right (Y page 161)
G To set the temperature, right (Y page 160)
Rear control panel
H To set the temperature (Y page 160)
I Display
J To set the airflow (Y page 162)154
Overview of climate control systemsClimate control