2015 MERCEDES-BENZ E-CLASS COUPE engine

Overview of climate control systems
General notes
Observe the settings recommended on the fol-
lowing pages. The windows could otherwise
mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R activate air-recirculation mode only briefly
R switch on "Cooling with air dehumidification"
R activate the windscreen demisting function
briefly, if required
Climate control regulates the temperature and
the humidity in the vehicle interior and filters
undesirable substances out of the air.
Climate control is only operational when the
engine is running. Optimum operation is only
achieved when the side windows and the roof
are closed.
The "Residual heat" function can only be activa- ted or deactivated with the ignition switched off
(Y page 124).
i Ventilate the vehicle for a brief period during
warm weather, e.g. using the "Convenience
opening" feature (Y page 86). This will speed
up the cooling process and the desired inte-
rior temperature will be reached more
quickly.
i The integrated filter filters out most parti-
cles of dust and soot and completely filters
out pollen. It also reduces gaseous pollutants 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 residual heat function
may be activated automatically an hour after
the key has been removed. The vehicle is then
ventilated for 30 minutes to dry the automatic climate control. Overview of climate control systems
115Climate control

;
To demist the windscreen (Y page 121)
= To switch the ZONE function on/off (Y page 121)
? Display
A To switch air-recirculation mode on/off (Y page 123)
B To switch the residual heat on/off (Y page 124)
C To activate/deactivate cooling with air dehumidification (Y page 119)
D To switch the rear window heating on/off (Y page 122)
E To switch the climate control on/off (Y page 117)
F To set the temperature, right (Y page 120)
G To set the climate mode (Y page 120)
H To set the airflow (Y page 121)
I To set the air distribution (Y page 120)
J To set the temperature, left (Y page 120)
Rear control panel
K To increase the temperature (Y page 120)
L Display
M To reduce the temperature (Y page 120)Notes on using the automatic climate
control
Automatic climate control Below, you can find a number of notes and rec-
ommendations to help you use climate control
optimally.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps above the
à and¿ buttons light up.
R Vehicles with THERMOTRONIC: in automatic
mode, you can also set the climate mode
(FOCUS, MEDIUM or DIFFUSE). The MEDIUM
level is recommended.
R Set the temperature to 22 †.
R Only use the "Windscreen demisting" function
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 otherwise mist
up as no fresh air is drawn into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the temper-
ature settings on the driver's side for the
front-passenger side and the rear compart-
ment as well. The indicator lamp above the
á button goes out.
R Vehicles with THERMOTRONIC: use the resid-
ual heat function if you want to heat or venti-
late 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.
R If you change the settings of the climate con-
trol system, the climate status display
appears for approximately three seconds at
the bottom of the screen in the multimedia
system display. You will see the current set-
tings of the various climate control functions.
ECO start/stop function During automatic engine switch-off, the climate
control only operates at a reduced capacity. If
you require the full climate control output, you
can switch off the ECO start/stop function by
pressing the ECO button (Y page 136). Operating the climate control system
Switching the climate control on/off
General notes When 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.
i Switch on climate control primarily using
the à button (Y page 119). Operating the climate control system
117Climate control

Activating/deactivating cooling with air dehumidification
General notes If you deactivate the "Cooling with air dehumidification" function, the air inside the vehicle will not
be cooled. The air inside the vehicle will also not be dehumidified. The windows can mist up more
quickly. Therefore, deactivate the "Cooling with air dehumidification" function only briefly.
The "Cooling with air dehumidification" function is only available when the engine is 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 malfunction.
Activating/deactivating X
To switch on: press the¿button.
The indicator lamp above the ¿button lights up.
i In vehicles with auxiliary heating, one of the indicator lamps on the auxiliary heating button lights
up when the "Cooling with air dehumidification" function is activated.
X To switch off: press the¿button.
The indicator lamp above the ¿button goes out. The cooling with air dehumidification function
has a delayed switch-off feature.
Problems with the "Cooling with air dehumidification" function Problem
Possible causes/consequences and
M MSolutions The indicator lamp over
the
¿ button flashes
three times or remains
off. The cooling with air
dehumidification func-
tion cannot be activated. The cooling with air dehumidification function has been deactivated
due to a malfunction.
X Consult a qualified specialist workshop. Setting climate control to automatic
mode
General notes In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature of the dispensed air, the airflow and the air dis- tribution.
The "Cooling with air dehumidification" function
is activated automatically in automatic mode. Automatic control X
Turn the key to position 2in the ignition lock
(Y page 132).
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp above the Ãbutton
lights up. Automatic air distribution and air-
flow are activated.
i THERMOTRONIC automatic climate control:
when automatic mode is activated, you can
set the climate mode (Y page 120).
X To switch to manual mode:
THERMATIC automatic climate control: press
air distribution adjustment switch F
(Y page 116). Operating the climate control system
119Climate control

X
Press the 3switch to stop the panorama
sliding sunroof.
The panorama sliding sunroof stops.
X To then open the panorama sliding sunroof,
pull back on the 3button.
i Notes on the automatic reversing feature
for:
R the side windows (Y page 85)
R the panorama sliding sunroof (Y page 89)
X Convenience opening feature: press and
hold the gbutton until the side windows
and the panorama sliding sunroof have
opened. The side windows and the panorama sliding sunroof move back to their original
position.
The indicator lamp above the gbutton
goes out. Air-recirculation mode is deactiva-
ted.
i If you open the side windows or the pano-
rama sliding sunroof manually after closing
with the convenience closing feature, they
will remain in this position when opened using
the convenience opening feature. Switching the residual heat on/off
General notes It is possible to make use of the residual heat of
the engine to continue heating the vehicle for
approximately 30 minutes after the engine has
been switched off. The heating time depends on
the set interior temperature.
The "residual heat" function only functions opti-
mally with the side windows and panorama slid-
ing sunroof closed.
Activating/deactivating X
Turn the key to position 0in the ignition lock
or remove it (Y page 132).
X To switch on: press theÌbutton.
The indicator lamp above the Ìbutton
lights up.
i If the residual heat function is switched on,
the windows may mist up on the inside.
i The blower will run at a low speed regardless
of the airflow setting. i
If you activate the residual heat function at
high temperatures, only the ventilation will be
activated. The blower runs at medium speed.
X To switch off: press theÌbutton.
The indicator lamp above the Ìbutton
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 Auxiliary heating
Important safety notes G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed spaces which do not have an extrac- tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot.
Flammable materials such as leaves, grass or twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself
There is a risk of fire. 124
Operating the climate control systemClimate control

When the auxiliary heating is switched on,
make sure that:
R no flammable materials come into contact
with hot vehicle components
R the exhaust gas can escape from the
exhaust pipe unhindered
R the exhaust gas does not come into contact
with flammable materials.
The auxiliary heating and the exhaust gas dis-
charge location can be found in front of the right-
hand front wheel.
! Operating the auxiliary heating/ventilation
draws on the vehicle battery. After you have
heated or ventilated the vehicle a maximum of two times, drive for a longer distance.
i Switch the auxiliary heating on regularly
once a month for about ten minutes.
The auxiliary heating heats the air in the vehicle interior to the set temperature. This occurs with-out using the heat of the running engine. The
auxiliary heating is operated directly using the
vehicle's fuel. For this reason, the tank content
must be at least at reserve fuel level to ensure
that the auxiliary heating functions.
The auxiliary heating/ventilation automatically
adjusts to changes in temperature and weather
conditions. For this reason, the auxiliary heating could switch from ventilation mode to heating
mode or from heating mode to ventilation mode.
The auxiliary heating switches off automatically
after 50 minutes. This time limit can be altered. To do this, visit a qualified specialist workshop.
You cannot use the auxiliary ventilation to cool
the vehicle interior to a temperature lower than
the outside temperature.
Before switching on X
Turn the key to position 2in the ignition lock
(Y page 132).
X Set the desired temperature.
Auxiliary heating or auxiliary ventilation can also be switched on if the manually set climate con-
trol is activated. Optimum comfort is attained by
setting the system to automatic mode. Set the
temperature to 22 †.
The auxiliary heating or auxiliary ventilation can
be switched on/off using the button on the
centre console or the remote control. The on-board computer can be used to specify
up to three departure times, one of which may
be preselected (Y page 219).
Switching the auxiliary heating/venti-
lation on or off using the button on the
centre console The colours of the indicator lamps in button
:
mean the following:
R blue: auxiliary ventilation is switched on
R red: auxiliary heating is activated
R yellow: departure time is preselected
(Y page 219)
X To switch on the auxiliary heating or aux-
iliary ventilation:
press button:.
The red or blue indicator lamp in button :
lights up.
X To switch off the auxiliary heating or aux-
iliary ventilation: press button:.
The red or blue indicator lamp in button :
goes out.
Switching the auxiliary heating/venti-
lation on or off using the remote control General notes
Your vehicle comes with one remote control.
You may use two additional remote controls for
your vehicle. For more information, please con-
tact a qualified specialist workshop.
Store the remote control for the auxiliary heat-
ing so that the auxiliary heating cannot be
switched on unintentionally. In particular,
ensure that the remote control for the auxiliary
heating is kept out of the reach of children. Operating the climate control system
125Climate control Z

The remote control has a range of approximately
300 metres. This range is reduced by:
R sources of radio interference
R solid objects between the remote control and
the vehicle
R the remote control being in an unfavourable
position in relation to the vehicle
R transmitting from an enclosed space
If the remote control battery is low, the battery
symbol on the left of the display is shown as
empty. Replace the remote control battery and
observe the important safety notes when doing so (Y page 127).
Switching the auxiliary heating/ventila-
tion on or off Remote control
:
Display
; u Switches on the auxiliary heating or
auxiliary ventilation
Checks the status
= . Sets the departure time
? ^ Switches off the auxiliary heating or
auxiliary ventilation
A , Sets the departure time
X To switch on: press and hold the ubut-
ton.
ON is shown in the remote control display.
X To switch off: press and hold the ^but-
ton.
OFF is shown in the remote control display.
Checking the status of the auxiliary heat- ing or auxiliary ventilation
X Briefly press the ubutton. The following messages may appear in the dis-
play: Display Meaning
The auxiliary heating or
auxiliary ventilation is
switched off.
The auxiliary ventilation is
switched on. The number
in the display shows the
remaining time (in
minutes) for the auxiliary
ventilation.
The auxiliary heating is
switched on. The number
in the display shows the
remaining time (in
minutes) for the auxiliary
heating.
A departure time has been
activated. The departure
time appears in the dis-
play. A departure time has been
activated. The auxiliary
ventilation is currently
activated. The number in
the display shows the
remaining time (in
minutes) for the auxiliary
ventilation. If the vehicle is
not started after this time, the running time is
increased by five minutes. A departure time has been
activated. The auxiliary
heating is currently activa-
ted. The number in the dis- play shows the remaining
time (in minutes) for the
auxiliary heating. If the
vehicle is not started after
this time, the running time is increased by five
minutes. If the engine has not yet reached operating tem-
perature when it is started, the auxiliary heating running time is increased. The auxiliary heating
continues to run until the operating temperature
is reached. If this is the case, the ysymbol 126
Operating the climate control systemClimate control

Running-in notes
Important safety notes
In certain driving and driving safety systems, the sensors adjust automatically while a certain dis-
tance is being driven after the vehicle has been delivered or after repairs. Full system effective-
ness is not reached until the end of this teach-in process.
Brake pads/linings and discs that are either new or have been replaced only achieve optimum
braking effect after several hundred kilometres
of driving. Compensate for the reduced braking
effect by applying greater force to the brake
pedal. The first 1500 km
If you treat the engine with sufficient care from
the very start, you will be rewarded with excel-
lent performance for the remainder of the
engine's life.
R Drive at varying road speeds and engine
speeds for the first 1500 km.
R Avoid overstraining the vehicle during this
period, e.g. driving at full throttle.
R Change gear in good time, before the rev
counter needle is Ôof the way to the red area
of the rev counter.
R Do not shift down a gear manually in order to
brake.
R Vehicles with automatic transmission: try
to avoid depressing the accelerator pedal
beyond the point of resistance (kickdown).
After 1500 km, you may gradually accelerate
the vehicle to full road and engine speeds.
i You should also observe these notes on run-
ning-in if the engine or parts of the drive train on your vehicle have been replaced. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardises the oper- ating and road safety of the vehicle. There is a
risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
Always fit the floormats securely and as pre-
scribed in order to ensure that there is always sufficient room for the pedals. Do not use
loose floormats and do not place several floor-mats on top of one another. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
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. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose 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 when the vehicle
is stationary. Drive off immediately. Avoid
high engine speeds and driving at full throttle
until the engine has reached its operating
temperature.
Only shift the automatic transmission to the
desired drive position when the vehicle is sta-
tionary. Driving
131Driving and parking Z

Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
Key positions
Key g
To remove the key
1 Power supply for some consumers, such as
the windscreen wipers
2 Ignition (power supply for all consumers)
and drive position
3 To start the vehicle
i If the key does not belong to the vehicle, it
can still be turned in the ignition lock. How-
ever, the ignition will not be switched on. The
engine cannot be started.
KEYLESS-GO General notes
Vehicles with KEYLESS-GO are equipped with
keys featuring an integrated KEYLESS-GO func-
tion and a detachable Start/Stop button.
The Start/Stop button must be inserted in the
ignition lock and the key must be in the vehicle.
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 key
determines whether a valid key is in the vehicle.
This occurs, for example, when starting the
engine.
To start the vehicle without actively using the
key:
R the Start/Stop button must be inserted in the
ignition lock
R the key must be in the vehicle
R the vehicle must not be locked with the key or
KEYLESS-GO (Y page 75)
Do not keep the KEYLESS-GO key:
R with electronic devices, e.g. a mobile phone
or another key
R with metallic objects, e.g. coins or metal film
R inside metallic objects, e.g. a metal case
This can affect the functionality of KEYLESS-GO.
If you lock the vehicle with the key's remote
control or with KEYLESS-GO, after a short time:
R you will not be able to switch on the ignition
with the Start/Stop button
R you will not be able to start the engine with the
Start/Stop button until the vehicle is
unlocked again
If you lock the vehicle centrally using the button
on the front door (Y page 81), you can continue
to start the engine with the Start/Stop button.
The engine can be switched off while the vehicle is in motion by pressing and holding the Start/
Stop button for three seconds. This function
operates independently of the ECO start/stop
automatic engine switch-off function.
Key positions with KEYLESS-GO :
Start/Stop button
; Ignition lock 132
DrivingDriving and parking