refrigerant type MERCEDES-BENZ METRIS 2019 MY19 Operator’s Manual

Climate controlAir conditioning in the rear com-
partment ........................................ 113
Control panel for dual-zone auto-
matic climate control .................... .112
Controlling automatically ...............1 15
Cooling with air dehumidification .. 114
Defrosting the windows ................. 118
Defrosting the windshield .............. 117
Important safety notes .................. 110
Information on dual-zone auto-
matic climate control ..................... 112
Information on TEMPMATIC (air-
conditioning system) ..................... 111
Overview of systems ......................1 10
Problem with the rear window
defroster ........................................ 118
Rear-compartment air condition-
ing ................................................. 113
Refrigerant ..................................... 312
Refrigerant filling capacity ............. 312
Setting the air distribution ............. 116
Setting the air vents ......................1 20
Setting the airflow ......................... 116
Setting the temperature ................ 115
Switching air-recirculation mode
on/off ............................................ 118
Switching on/off ........................... 113
Switching residual heat on/off ...... 119
Switching the rear window
defroster on/off ............................ 118
Switching the synchronization
function on and off ........................ 117
TEMPMATIC control panel (air
conditioning) .................................. 111
Clock
Setting (vehicle without steering
wheel buttons) ............................... 178
Cockpit
Instrument cluster (vehicle with
steering wheel buttons) ................... 39
Instrument cluster (vehicle with-
out steering wheel buttons) ............. 37
Overview .......................................... 36
see Instrument cluster
Coffee cup symbol
see ATTENTION ASSIST COL
LISION PREVENTION ASSIST
Activating/deactivating the dis-
tance warning function .................. 187
Adaptive Brake Assist .................... 147
Display message ............................ 216
Distance warning function ............. 146
Operation/notes ............................ 146
Collision warning
see COLLISION PREVENTION ASSIST
COMAND display
Cleaning ......................................... 270
Combination switch ............................ 98
Communications equipment
Operation ....................................... 243
Type approval/frequency .............. 305
Consumption statistics
Fuel (vehicle with steering wheel
buttons) ......................................... 181
Fuel (vehicle without steering
wheel buttons) ............................... 174
Control panel
Above the windshield ....................... 43
Center console ................................ 42
Climate control ................................ 42
Driver's door ....................................4 3
Convenience closing feature .............. 83
Convenience opening
With the SmartKey ........................ .119
Convenience opening feature ............ 83
Conversions/equipment .................... 32
Coolant (engine)
Adding ...........................................2 57
Checking the level ......................... 255
Display messages (vehicle with
steering wheel buttons) ................. 215
Display messages (vehicle with-
out steering wheel buttons) ........... 200
Displaying the temperature (on-
board computer) ............................ 175
Filling capacity ............................... 312
Notes ............................................. 311
Temperature display in the instru-
ment cluster .................................. 172
Warning lamp ................................. 227
Cooling
see Climate control
Crosswind Assist ................................. 67
8Index

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