climate control MERCEDES-BENZ METRIS 2018 MY18 Operator’s Manual

iIf the airflow is set when in automatic mode,
automatic control is deactivated. The indica-
tor lamp in the Ãbutton then goes out.
The air distribution continues to be adjusted
automatically, however.
Rear-compartment air-conditioning
system
Vehicles with air-conditioning system
XSwitch on climate control (Ypage 113).
The air conditioning settings for temperature,
airflow and, for rear-compartment air condi-
tioning, also the setting for air distribution are
also applied to the rear-compartment climate
control.
Vehicles with dual-zone automatic cli-
mate control
XSwitch on climate control (Ypage 113).
XTo increase or decrease: press the/
button on the control panel of the automatic
climate control.
The indicator lamp in the /button flashes.
The control panel display shows the second
menu level for the temperature and airflow
setting of the rear compartment air condi-
tioning.
XPress the KorI button.
The control panel display shows the rear-
compartment airflow control setting as a bar
display.
If you do not make any more settings for
approximately ten seconds, the control panel
display shows menu level 1 again for the auto-
matic climate control settings. The indicator
lamp in the /button remains lit.
Activating/deactivating the synchro-
nization function
General notes
Dual-zone automatic climate control can be set
centrally using the synchronization function.
The temperature setting for the driver's side is
then adopted for the front-passenger side and,
on vehicles with rear-compartment air condi-
tioning, the rear compartment too.
Dual-zone automatic climate control
XSwitch on climate control (Ypage 113).
XPress the 0button.
If the indicator lamp in the 0button lights
up, the function is switched on. The display
then shows the temperature set on the driv-
er's side for the front-passenger side.
The synchronization function switches off if
the temperature setting for the front-
passenger side or for the rear compartment is
altered. The indicator lamp on the 0but-
ton then goes out.
Defrosting the windshield
General notes
You can use the following settings to defrost the
windshield or to defrost the inside of the wind-
shield and the front side windows.
Only use the following settings until the wind-
shield is clear.
Air-conditioning system
XSwitch on climate control (Ypage 113).
XTurn temperature control :and airflow con-
trol Aclockwise to the zsetting
(
Ypage 111).
XSelect the ¯air distribution setting
(Ypage 116).
Only the indicator lamp in the ¯button
lights up. The indicator lamps on the Pand
O buttons are off.
Dual-zone automatic climate control
XSwitch on climate control (Ypage 113).
XTo activate/deactivate the windshield
defrosting function: press the¬button.
The indicator lamp in the ¬button comes
on when the windshield defrosting function is switched on. Temperature, airflow and air dis-
tribution are automatically set to the optimum
defrosting effect. Air-recirculation mode is
deactivated.
When you activate automatic mode, the wind-
shield defrosting function is automatically
deactivated.
When you deactivate the windshield defrosting
function, the previous automatic climate control
Operating the climate control system117
Climate control

settings are reactivated with the exception of
air-recirculation mode. Air-recirculation mode
remains deactivated.
Clearing condensation from the win-
dows
Windows fogged up on the inside
Air-conditioning system
You should only select this setting until the win-
dows are clear again.
XSwitch on the rear window defroster if nec-
essary (Ypage 118).
XSwitch on climate control (Ypage 113).
XSwitch off air-recirculation mode
(Ypage 118).
XTurn temperature control :clockwise to a
higher temperature and air flow control Ato
a blower speed between 3and 6
(
Ypage 111).
XIf possible, only select the ¯setting of the
air distribution (Ypage 116).
Only the indicator lamp in the ¯button
lights up.
XSwitch on the cooling with air dehumidifica-
tion function (Ypage 114).
XIf the windows still fog up, set the climate
control functions as described for defrosting
of the windshield (
Ypage 117).
Dual-zone automatic climate control
You should only select this setting until the win- dows are clear again.
XSwitch on the rear window defroster if nec-
essary (Ypage 118).
XSwitch on climate control (Ypage 113).
XSwitch off air-recirculation mode
(Ypage 118).
XSwitch on the cooling with air dehumidifica-
tion function (Ypage 114).
XSwitch on automatic mode (Ypage 115).
XIf the windows continue to fog up, switch on
the windshield defrosting function
(
Ypage 117).
Windows fogged up on the outside
You should only select this setting until the
windshield is clear again.
XSwitch on the windshield wipers
(Ypage 106).
XSwitch on climate control (Ypage 113).
XIn warm and damp weather, do not allow cold
air to flow onto the windows. Close the side
air vents if required (
Ypage 120).
Switching the rear window defroster
on/off
General notes
The rear window defroster consumes a lot of
power. You should therefore switch off the rear
window defroster as soon as the rear window is
clear.
XTurn the key to position 2in the ignition lock.
XPress the ¤button on the control panel.
If the indicator lamp in the ¤button lights
up, the rear window defroster is switched on.
The rear window defroster switches off auto-
matically after a few minutes.
Problems with the rear window
defroster
The rear window defroster has switched off pre-
maturely or cannot be activated.
The vehicle starter battery is not sufficiently
charged.
XSwitch off any consumers that are not
required, e.g. reading lamps, interior lighting
or seat heating.
When the battery is sufficiently charged, the
rear window defroster can be activated again.
Switching air-recirculation mode
on/off
Important safety notes
You can deactivate the intake of fresh air if
unpleasant odors enter the vehicle from out-
side. The air inside the vehicle is then circulated.
When you switch on air-recirculation mode, the side windows and windows could fog up more
118Operating the climate control system
Climate control

quickly, in particular at low outside tempera-
tures. Only switch on air-recirculation mode for
a short time.
Air-conditioning system or dual-zone
automatic climate control
XSwitch on climate control (Ypage 113).
XPress thehbutton.
If the indicator lamp in the hbutton lights
up, air-recirculation mode is activated.
Air-recirculation mode switches on automati-
cally:
Rat high outside temperatures.
Rwhile driving in a tunnel (only vehicles with a
navigation system).
The indicator lamp in the hbutton is then not
lit up. Outside air is added automatically after
about 30 minutes.
Air-recirculation mode is deactivated automati-
cally:
Rafter approximately five minutes at outside
temperatures below about 45 ‡ (7 †)
Rafter approximately five minutes when the
cooling with air-dehumidification function is
deactivated
Rafter approximately 30 minutes at outside
temperatures above about 45 ‡ (7 †) and
when the cooling with air-dehumidification
function is active
Convenience opening/pre-entry cli-
mate control
GWARNING
During convenience opening, body parts
could be drawn in or become trapped
between the side window and the door frame.
There is a risk of injury.
Monitor the entire opening procedure when
using convenience opening. When opening,
make sure that nobody touches the side win- dow. Release the %switch immediately if
somebody becomes trapped, to interrupt the
opening procedure.
XPre-entry climate control and conveni-
ence opening with the key: press and hold
the % button on the key.
The side windows open automatically and the
blower of the climate control system is acti-
vated.
XRelease the %button.
iAt high interior temperatures, the blower is
also switched on when a door is opened. This
means that slightly cooled air enters the vehi-
cle interior after the engine is started, to cool
the vehicle more rapidly.
Switching the residual heat function
on/off
General notes
Only vehicles with dual-zone automatic climate
control have the residual heat function.
Once the engine is switched off, it is possible to
make use of the residual heat of the engine to
continue heating or ventilating the front com-
partment of the vehicle for approximately
30 minutes. The heating or ventilation time
depends on the set interior temperature.
Switching the function on/off
XTurn the key to position 0in the ignition lock
or remove it.
XPress the Ìbutton.
If the residual heat function is activated, the
indicator lamp in the Ìbutton comes on.
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 auxiliary ventila-
tion will be activated. The blower then runs at
medium speed.
The residual heat function switches off auto-
matically
Rafter approximately 30 minutes
Rif the starter battery's condition of charge is
too low
Rwhen you switch on the ignition
Operating the climate control system119
Climate control
Z

Adjusting the air vents
Important safety notes
GWARNIN G
Ver yhot or ver ycold air can flo wfrom th eair
vents .This could result in burn sor frostbit ein
th eimmediat evicinity of th eair vents .There
is aris kof injury.
Mak esur ethat all vehicl eoccupant salways
maintai n asufficien tdistanc eto th eair out -
lets. If necessary, redirect th eairflow to
another area of th evehicl einterior.
The center and side air vents are adjustable.
The air vents can also be adjusted on vehicles
wit hrear-compartmen tair conditioning .
In order to ensur eth edirec tflo wof fresh air
throug hth eair vents int oth evehicl einterior,
pleas eobserv eth efollowin gnotes:
Rkeep th eair inlet between th ewindshield and
th ehoo dfree of blockages, suc has ice ,snow
or leaves.
Rnever cover th events or th eventilation grilles
in th evehicl einterior.
Setting the center air vents
:Control for center air vent, lef t
;Control for center air vent, right
=Thumbwheel for center air vent, right
?Thumbwheel for center air vent, lef t
XTo open/close:turncontrol :or; clock -
wise or counter-clockwise as far as it will go.
XTo adjust th eair direction: hold side air ven t
by control :or; and mov eit up or down .
XUsing thumbwheel =or? mov ecenter air
ven tto th elef tor right .
Setting the side air vents
:Sideair ven t
;Control for side air ven t
XTo open/close:turncontrol ;to th elef tor
right as far as it will go.
XTo adjust th eair direction: hold side air
ven t: by control ;and mov eit up or down
or to th elef tor right .
Setting the rea r-compa rtment air
vents
Rear air vents (example: right-hand side of vehicle)
:
Thumbwheel for vertical adjustmen tof th e
airflow and air quantity control
;Thumbwheel for horizontal adjustmen tof
th eairflow
120Adjusting the air vents
Climate control

The air vents can only be adjusted on vehicles
with rear-compartment air conditioning.
Vehicles with rear-compartment air condition-
ing: in heating mode, the air in the rear com-
partment is automatically distributed in the foot-
wells and roof area after the coolant has
reached the required temperature. In cooling
mode, in the initial phase the air is distributed in
the footwells and roof area of the hot vehicle,
and subsequently only in the roof area.
XTo open: turn thumbwheel :of the rear air
vent to the center position.
XTo close: turn thumbwheel :to the upper or
lower end position.
Adjusting the air vents121
Climate control
Z

Important safety notes
GWARNING
If th eengin eis switched off automatically and
you exit th evehicle, th eengin eis restarte d
automatically. The vehicl emay begi nmoving .
Ther eis aris kof acciden tand injury.
If you wish to exit th evehicle, always tur noff
th eignition and secure th evehicl eagainst
rollin gaway.
Automatic engine switch-off
Gene ral notes
The ECO start/sto pfunction is operational
when th eè ECO symbol is shown in th esta-
tus bar of th edisplay.
Fo rthis to happen, various conditions, includin g
th efollowing, must be met :
RtheECO start/sto pfunction is switched on .
The indicator lamp in th eè ECO butto nis
lit (
Ypage 127).
Rtheoutside temperature is abov e32 ‡(0 †).
Rthe engine has reached its operating temper-
ature.
Rthe set temperature for the vehicle interior
has been reached.
Rthe condition of charge of the starter battery
is sufficient.
Rthe system detects that the windshield is not
fogged up when the air-conditioning system
or automatic climate control is switched on.
Rthe hood is closed.
Rthe driver's seat belt is fastened.
Rthe driver's door is closed.
Rthere is no danger of immediately rolling
backwards, e.g. when stopped on a steep gra-dient.
If a trailer is attached and/or a rear carrier
system is installed and connected electri-
cally, this danger is detected on less steep
gradients.
Only if all the conditions for automatic engine
switch-off are fulfilled, does the display show
the è ECO symbol.
All of the vehicle's systems remain active when
the engine is switched off automatically.
The engine can be switched off automatically a
maximum of four times (initial stop, then three subsequent stops) in succession. After that, the
display hides the èECO symbol. Automatic
engine switch-off is not possible again until the
è ECO symbol is shown again.
If you open the hood after an a
utomatic engine
switch-off, the automatic engine start is deacti-
vated. Once the hood is closed, you have to start
the engine manually.
If the vehicle is stopped in transmission position
h ori, the ECO start/stop function switches
off the engine automatically once the vehicle is
stationary.
Automatic engine start
General notes
The engine is started automatically if:
Ryou switch off the ECO start/stop function by pressing the èECO button The indicator
lamp in the èECO button then goes out.
(
Ypage 127)
Ryou depress the accelerator pedal.
Ryou engage reverse gear k
Ryou unfasten your seat belt.
Ryou open the driver's door.
Rthe vehicle begins to roll away.
Rthe brake system requires this.
Rthe temperature in the vehicle interior
increasingly deviates from the set value.
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on.
Rthe battery's condition of charge is too low.
The engine is started automatically if you:
Rswitch to drive program M(Ypage 131)
Rrelease the brake pedal when in transmission
position hori
Rswitch to transmission position j
After shifting from transmission position kto
h, the ECO start/stop function is not available
until the èECO symbol is shown in the dis-
play.
126Driving
Driving and parking

Example: vehicle identification plate (US vehicles)
Example: vehicle identification plate (vehicles for
Canada)
;
VIN
=Paint code
iThe data shown on the vehicle identification
plate is sample data. This data differs for
every vehicle and may deviate from what is
shown here. The data valid for your vehicle
can be found on the identification plate of
your vehicle.
Vehicle identification number (VIN)
VIN in the engine compartment
The VIN can be found on the vehicle identifica-
tion plate (Ypage 305).
VIN :is also stamped into the longitudinal
member in the engine compartment next to the
fuse box.
Engine number
The engine number is stamped on the crank-
case. More information may be obtained at any
qualified specialist workshop.
Service products and capacities
Important safety notes
GWARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children.
HEnvironmental note
Dispose of service products in an environ-
mentally responsible manner.
When handling, storing and disposing of any
service products, please observe the relevant
regulations.
Service products include the following:
RFuels, e.g. gasoline
RLubricants, e.g. engine oil, transmission oil
RCoolant
RBrake fluid
RWasher fluid
RClimate control system refrigerants
Approved service products comply with the
highest quality standards and are listed in the
Mercedes-Benz Specifications for Service Prod-
ucts. Only use service products approved for the
vehicle. This is an important condition for the
Limited Warranty.
You will recognize the service products
approved by Mercedes-Benz by the following
306Service products and capacities
Technical data

Check the antifreeze/corrosion inhibitor con-
centration inthe coolant every six months.
The percentage of corrosion inh ibitor/ant i-
freeze additiveinthe engine co oling system
should:
Rbe at least 50 %.This way, the engine co oling
system isprotected against freezing downto
approximate ly-35 ‡ (-37 †).
Rnot exceed 55% (antifreeze protection down
to -49 ‡ [-45 †]). Other wise, heat will not be
dissipated as effectively.
Mercedes-Benz recommends an antifreeze and
corrosion inhibitor that meets the requirements
in the Mercedes-Benz Specifications for Service
Products Sheet Number 325.
More information can be obtained at any quali-
fied specialist workshop.
Operating fluid: coolant
Product name/number
Zerex G40-91, The Valvoline Company
MB Sheet No. 325.5
Maintenance interval
Have the coolant replaced at specified intervals
by a qualified specialist workshop.
Capacities
Engine cooling system
CoolantApprox. 11 US qt (10.4 l)
Climate control system refrigerants
Important safety notes
The climate control system of your vehicle is fil-
led with the refrigerant R‑ 134a.
The warning label for the refrigerant being 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. Maintenance work such as adding refrigerant or
replacing components may only be carried out
by a qualified specialist workshop. All applicable
regulations thereto and the SAE standard J639
must be adhered to.
All work on the climate control system should
always be carried out at qualified specialist
workshop.
Refrigerant warning label
Refrigerant warning label (example)
:
Warning symbols
;Refrigerant capacity
=Applicable standards
?Part number PAG oil
AType of refrigerant
Warning symbols :refer to:
Rpossible dangers
Rthe implementation of maintenance work at a
qualified specialist workshop
Capacities
Front-compartment
air-conditioning
systemCapacity
Refrigerant21.2 oz
(600 g)
PAG oil2.8 oz (79 g)
312Service products and capacities
Technical data