2020 MERCEDES-BENZ METRIS air condition

ABS (Anti-lock Braking System)
General notes ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi-
cle when braking.
The ò warning lamp in the instrument clus-
ter lights up when the ignition is switched on.
The lamp goes out when the engine starts run-
ning.
Important safety notes Observe the important safety guidelines for
the driving safety system (
Y page
66).
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface condi-
tions. ABS works on slippery surfaces, even
when you only brake gently. G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of
skidding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
If ABS is malfunctioning, the ò warning
lamp

(Y page 230) lights up while the engine
is running and the display shows a message:
R on vehicles without steering wheel buttons
(Y page 196)
R on vehicles with steering wheel buttons
(Y page 210)
BAS, Hill Start Assist and ESP ®
and its driving
safety systems and other driving systems also
fail. Observe the notes on the ò warning
lamp and the display messages.
Braking If ABS intervenes when braking, you will feel a
pulsating in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions and functions as
a reminder to take extra care while driving. X
If ABS intervenes: continue to depress the
brake pedal with force until the braking sit-
uation is over.
X To make a full brake application: depress
the brake pedal with full force. BAS (Brake Assist System)
General notes BAS operates in emergency braking situations.
If you depress the brake pedal quickly, BAS
automatically boosts the braking force, thus
shortening the stopping distance.
Important safety notes Observe the important safety guidelines for
the driving safety system

(Y page 66). G
WARNING
If BAS is malfunctioning, the braking dis-
tance in an emergency braking situation is
increased. There is a risk of an accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
If BAS is malfunctioning, the ÷ warning
lamp lights up while the engine is running
(Y page

230) and the display shows a mes-
sage:
R on vehicles without steering wheel buttons
(Y page 200)
R on vehicles with steering wheel buttons
(Y page 214)
Braking X
Keep the brake pedal firmly depressed until
the emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. Driving safety systems
67
Safety Z

Hazard warning lamp switch
X
To switch on/off: press the £ hazard
warning lamp switch.
If you have indicated a turn while the hazard
warning lamps are switched on, only the turn
signal lamps on the side of the vehicle selec-
ted will light up.
The hazard warning lamps automatically
switch on if: R an air bag is deployed.
R you brake sharply and bring the vehicle to a
halt from a speed of more than 45 mph
(70 km/h
).
The hazard warning lamps switch off automati-
cally if the vehicle reaches a speed of over
6 mph (10 km/h) again after a full brake appli-
cation.
i The hazard warning lamps still operate
even if the ignition is switched off. Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
X Switch on the low-beam headlamps and
drive off.
The level of moisture diminishes, depending
on the length of the journey and the weather
conditions (humidity and temperature).
If the level of moisture does not diminish:
X Have the headlamps checked at a qualified
specialist workshop. Interior lighting
Overview
Interior lighting buttons (example: comfort over-
head control panel)
:
p Switches the front left-hand reading
lamp on/off
; | Switches the automatic interior light-
ing control on and off
= c Switches the front interior lighting on
and off
? w Switches the rear compartment or
cargo compartment lighting on/off
A p Switches the front right-hand reading
lamp on and off
The number and arrangement of the buttons is
equipment-dependent. General notes
In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time,
unless the key is in position 2 in the ignition
lock. Automatic interior lighting control
The interior lighting is activated for about
20 seconds

when the key is removed from the
ignition lock. For a vehicle with steering-wheel
buttons, the light delay function for the interior
lighting can be switched on and off using the
on-board computer ( Y page 193)102
Interior lighting
Lights and windshield wipers

Useful information
This Operator's Manual describes all models
as well as standard and optional equipment of
your vehicle that were available at the time of
going to print. Country-specific variations are
possible. Note that your vehicle may not be
equipped with all of the described functions.
This also applies to systems and functions rel-
evant to safety.
Read the information on qualified specialist
workshops (Y page
32).Overview of climate control systems
Important safety notes
Observe the recommended settings on the fol-
lowing pages. Otherwise, the windows could
fog up.
To prevent the windows from fogging up:
R only switch off climate control briefly
R only switch on air-recirculation mode briefly
R for vehicles with air-conditioning system or
dual-zone automatic climate control, switch
on the "Cooling with air dehumidification"
function
R for vehicles with dual-zone automatic cli-
mate control, switch on the windshield
defrosting function briefly, if required Climate control regulates the temperature and
the humidity in the vehicle interior and filters
undesirable substances from the air.
Climate control is only operational when the
engine is running. The system only functions
optimally when the side windows are closed.
Ventilate the vehicle for a brief period during
warm weather. In order to cool the vehicle
more rapidly, switch climate control to air-
recirculation mode briefly. This will speed up
the cooling process and the desired interior
temperature will be reached more quickly.
The integrated filter can filter out most parti-
cles of dust and completely filters out pollen.
In vehicles with dual-zone automatic climate
control, gaseous pollutants and odors will also
be reduced. A clogged filter reduces the air-
flow into the vehicle interior. For this reason,
you should always observe the interval for
replacing the filter, which is specified in the
Maintenance Booklet. As the interval between
changes depends on environmental condi-
tions, e.g. heavy air pollution, the interval may
be shorter than stated in the Maintenance
Booklet. 114
Overview of climate control systems
Climate control

Control panel for the air-conditioning system
:
Sets the temperature (Y page 119)
z Defrosts the windshield (Y page
121)
; / Switches the rear-compartment air conditioning on/off
(Y page 117)
= _ Sets the air distribution (Y page
120)
¯ Defrosts the windshield (Y page
121)
? h Activates/deactivates air-recirculation mode (Y page
123)
A K Sets the airflow ( Y page
120)
z Defrosts the windshield (Y page
121)
B ¿ Switches the cooling with air dehumidification function on/off (Y page
118)
C ¤ Switches the rear window defroster and mirror heating on/off
(Y page 122) Optimum use of the air-conditioning
system
Below, you can find a number of notes and
recommendations to help you use the air-con-
ditioning system optimally. R Switch on the cooling with air dehumidifica-
tion function. The indicator lamp in the
¿ switch comes on when the function is
switched on.
R Set the temperature to

72 ‡ (22 †). Only
change the temperature in small incre-
ments. R
Only use the settings for defrosting the
windshield briefly, until the windshield is
clear again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could other-
wise fog up as no fresh air is drawn into the
vehicle in air-recirculation mode. The indica-
tor lamp in the h switch comes on when
the function is switched on. Overview of climate control systems
115
Climate control

Control panel for 3-zone automatic climate control
:
Sets temperature to the left and at rear (only for vehicles with rear air conditioning)
(Y page 119)
; Ã Activates automatic mode – controls the climate control automatically
(Y page 119)
= ¬ Defrosts the windshield
(Y page 121)
? K Increases the airflow
(Y page 120)
A Ä Sets the air distribution (Y page
120)
B Display
C h Switches air-recirculation mode on or off
(Y page 123)
D / Switches operation to rear air conditioning (2nd menu level) ( Y page
117)
E Sets temperature to the right and at rear (only for vehicles with rear air conditioning)
( Y page

119)
F 0 Switches synchronization on or off
(Y page 121)
G ¿ Switches the cooling with air dehumidification function on or off ( Y page 118)
H I Reduces the airflow
(Y page 120)
I ¤ Switches the rear window defroster and mirror heating on or off (Y page
122)
J Ì Switches the residual heat utilization on or off ( Y page
123)Optimum use of 3-zone automatic
climate control
Below, you can find a number of notes and
recommendations to help you use 3-zone
automatic climate control optimally. R Activate automatic mode. All basic functions
are controlled automatically. The indicator
lamp in the à switch comes on when the
function is switched on.
R Switch on the cooling with air dehumidifica-
tion function. The indicator lamp in the
¿ button comes on when the function is
switched on. R
Set the temperature to
72 ‡ (22 †) for
both sides. Only change the temperature in
small increments.
R Only use the "Windshield defrosting" func-
tion briefly until the windshield is clear
again. The indicator lamp in the ¬ button
comes on when the function is switched on.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could other-
wise fog up as no fresh air is drawn into the
vehicle in air-recirculation mode. The indica-
tor lamp in the h button comes on when
the function is switched on. 116
Overview of climate control systems
Climate control

R
If you wish to use the driver's side settings
on the co-driver's side and, for vehicles with
rear-compartment air conditioning, for the
rear compartment as well, use the "Synchro-
nization" function. The indicator lamp in the
0 button comes on when the function is
switched on.
R After long journeys, you can use the residual
heat of the engine to heat the stationary
vehicle. The residual heat utilization can
only be switched on or off while the ignition
is switched off. The indicator lamp in the
Ì button comes on when the function is
switched on.
Approximately 60 minutes after parking the
vehicle, 3-zone automatic climate control can
switch on automatically, depending on the out-
side temperature. The vehicle is then ventila-
ted for about 30 minutes at low fan setting
and 3-zone automatic climate control is dried
out. Optimum use of the rear compart-
ment air conditioning
Vehicles with air-conditioning system
Switch the rear-compartment air-conditioning
system on and off using the air-conditioning
system control panel. When you switch on the
rear-compartment air conditioning, your set-
tings for temperature, airflow and air distribu-
tion are automatically adopted on the control
panel for the rear-compartment air condition-
ing.
The indicator lamp in the / button comes
on when the rear-compartment air-condition-
ing is switched on
(Y page 115).
Vehicles with dual-zone automatic climate
control
To operate the rear-compartment air condi-
tioning, use the control panel of the dual-zone
automatic climate control system. When you
switch on the rear-compartment air condition-
ing, you can set the temperature and airflow
separately on the control panel. The airflow
setting is automatically adopted for the rear-
compartment air conditioning. When dual-zone
automatic climate control is in à automatic
mode, the air distribution of the rear-compart-
ment air conditioning is also automatically
adjusted.
When you set the temperature and airflow of
the rear-compartment air conditioning, the indicator lamp of the / button
(Y page

116) flashes. When the rear-compart-
ment air conditioning is switched on, the indi-
cator lamp on the / button lights up.
For optimum climate control, set the tempera-
ture to 72 ‡ (22 †) and switch on à auto-
matic mode. Only change the temperature in
small increments. Operating the climate control sys-
tem
Switching the climate control on/off
Important safety notes When the climate control is switched off, air
intake and air circulation also stop. Only use
this setting for a brief period. Otherwise, the
windows could fog up.
Air-conditioning system X
Turn the key to position 2 in the ignition
lock.
X To switch on: turn airflow control A clock-
wise to at least level 1 – (Y page

115).
X To switch off: turn airflow control A coun-
ter-clockwise to position 0.
Dual-zone automatic climate control X
Turn the key to position 2 in the ignition
lock.
X To switch on: press the à button.
The indicator lamp in the à button and
the display are switched on. The climate
control is automatically adjusted depending
on the set temperature

(Y page 119).
or
X Press the K button and set blower set-
ting 1 or above.
The blower settings are shown in the display
as a bar graph.
X To switch off: press the I button and,
after reaching the lowest blower speed,
press it again.
The control panel display goes off.
Preferably switch on climate control using the
à button. Operating the climate control system
117
Climate control

Rear-compartment air-conditioning
system
Vehicles with air-conditioning system
X Switch on air-conditioning system.
X To activate/deactivate: press the /
button on the air-conditioning system con-
trol panel.
The indicator lamp in the / button
comes on when the rear-compartment air
conditioning is switched on. The settings for
temperature, airflow and, in the case of
rear-compartment air conditioning, air distri-
bution are adopted for the rear-compart-
ment air conditioning.
Vehicles with dual-zone automatic cli-
mate control
X Switch on dual-zone automatic climate con-
trol.
X To switch on: press the / button on the
control panel.
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
conditioning.
X Press the K button and set blower set-
ting 1 or above for the rear-compartment air
conditioning.
The blower settings are shown in the display
as a bar graph. The rear-compartment air
conditioning is switched on.
X If necessary set the temperature for the
rear-compartment air conditioning using
temperature control : or E (Y page
116).
The display shows the selected rear-com-
partment temperature.
If you do not make any more settings for
approximately ten seconds, the control
panel display shows menu level 1 again for
the automatic climate control settings. The
indicator lamp in the / button remains
lit.
i The air distribution setting applies both to
automatic climate control and to the rear-
compartment air conditioning and cannot be
set separately for the two.
X To switch off: press the / button on the
control panel.
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
conditioning.
X Press the I button and, after reaching
the lowest blower speed, press it again.
The control panel display goes off and the
rear-compartment air conditioning is
switched off.
If you do not make any more settings for
approximately ten seconds, the control
panel display shows menu level 1 again for
the automatic climate control settings. The
indicator lamp in the / button goes out. Switching the cooling with air dehu-
midification function on/off
Important safety notes The cooling with air dehumidification function
of the air conditioning or automatic climate
control is only available when the engine is
running. The air inside the vehicle is cooled
and dehumidified according to the tempera-
ture selected.
Condensation may appear on the underside of
the vehicle when in cooling mode. This is nor-
mal and not a sign that there is a malfunction.
If you switch off the "Cooling with air dehumid-
ification" function, the air inside the vehicle
will not be cooled (in warm weather) or dehu-
midified. Therefore, only switch off the "Cool-
ing with air dehumidification" function briefly.
Otherwise, the windows will fog up more
quickly.
Switching on and off For dual-zone automatic climate control, the
function for automatic climate control settings
can only be activated or deactivated on the
first menu level. If you do not set a new value
for the rear-compartment climate control in
the second menu level within approx. ten sec-
onds, the control panel display goes back to
the first menu level.
X Press the ¿ button.
The indicator lamp in the ¿ switch
comes on when the function is switched on.
i The cooling with air dehumidification func-
tion has a delayed switch-off feature. 118
Operating the climate control system
Climate control

Regulating climate control automati-
cally
General notes When dual-zone automatic climate control is in
automatic mode, the set temperature is auto-
matically kept constant. The system automati-
cally regulates the temperature of the dis-
pensed air, the airflow and the air distribution.
Automatic mode will achieve optimal operation
if the cooling with air dehumidification func-
tion is also activated. If desired, the cooling
with air dehumidification function can be deac-
tivated (
Y page 118).
Dual-zone automatic climate control Automatic mode for automatic climate control
settings can only be activated or deactivated
on the first menu level. If you do not set a new
value for the rear-compartment climate control
in the second menu level within approx. ten
seconds, the control panel display goes back
to the first menu level.
X Switch on climate control ( Y page 117).
X Set temperature for the driver's and front-
passenger side and, for vehicles with rear-
compartment air conditioning, for the rear
compartment, too

(Y page 119).
X To switch automatic mode on or off:
press the à button.
If the indicator lamp in the
à button
lights up, automatic mode is activated. The
airflow and air distribution are controlled
automatically and the windshield defrosting
function is deactivated.
If you deactivate automatic mode, the auto-
matic climate control system saves the current
settings.
In automatic mode, if you adjust the airflow or
air distribution manually, the indicator lamp
above the à button goes out. The function
which has not been changed manually, how-
ever, continues to be controlled automatically. Setting the temperature
Air-conditioning system X
Switch on climate control ( Y page
117).
X To increase or reduce: turn temperature
control : clockwise or counter-clockwise.
When doing so, only change the tempera-
ture in small increments, and start in the
center position or at

72 ‡ (22 †)
( Y page 115).
Dual-zone automatic climate control You can set the temperature separately for the
driver's and co-driver's side. In vehicles with
rear-compartment air conditioning, the tem-
perature for the rear compartment can be set
additionally. Each set temperature is automati-
cally maintained at a constant level.
X Switch on climate control (Y page
117).
X To increase or reduce: turn temperature
control : or E clockwise or counter-clock-
wise ( Y page

116). When doing so, only
change the temperature in small increments
starting at 72 ‡ (22 †).
The control panel display shows the set
temperature for the left and right side at the
respective edge of the display.
Rear-compartment air-conditioning
system Vehicles with air-conditioning system
X Switch on climate control ( Y page
117).
The air conditioning settings for tempera-
ture, airflow and, for rear-compartment air
conditioning, also the setting for air distribu-
tion are also applied to the rear-compart-
ment climate control.
Vehicles with dual-zone automatic cli-
mate control X Switch on climate control ( Y page
117).
X To 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 Operating the climate control system
119
Climate control