2020 MERCEDES-BENZ METRIS coolant level

Cooling with air dehumidification .. 118
Defrosting the windows .................
122
Defrosting the windshield .............. 121
Important safety notes .................. 114
Information on dual-zone auto-
matic climate control ..................... 116
Information on TEMPMATIC (air-
conditioning system) ..................... 115
Overview of systems ...................... 114
Problem with the rear window
defroster ........................................ 122
Rear-compartment air condition-
ing ................................................. 117
Refrigerant ..................................... 311
Refrigerant filling capacity ............. 312
Setting the air distribution ............. 120
Setting the air vents ...................... 124
Setting the airflow ......................... 120
Setting the temperature ................ 119
Switching air-recirculation mode
on/off ............................................ 123
Switching on/off ........................... 117
Switching residual heat on/off ...... 123
Switching the rear window
defroster on/off ............................ 122
Switching the synchronization
function on and off ........................ 121
TEMPMATIC control panel (air
conditioning) .................................. 115
Clock
Setting (vehicle without steering
wheel buttons) ............................... 181
Co-driver's seat
see Seats
Cockpit
Instrument cluster (vehicle with
steering wheel buttons) ................... 40
Overview .......................................... 37
see Instrument cluster
Coffee cup symbol
see ATTENTION ASSIST
COLLISION PREVENTION ASSIST
Activating/deactivating the dis-
tance warning function .................. 190
Adaptive Brake Assist .................... 150
Display message ............................ 222
Distance warning function ............. 149
Operation/notes ............................ 149 Collision warning
see COLLISION PREVENTION ASSIST
COMAND display
Cleaning
......................................... 268
Combination switch .......................... 101
Communications equipment
Operation ....................................... 241
Type approval/frequency .............. 304
Constant headlamp mode
see Daytime running lamps
Consumption statistics
Fuel (vehicle with steering wheel
buttons) ......................................... 184
Fuel (vehicle without steering
wheel buttons) ............................... 177
Control panel
Above the windshield ....................... 44
Center console ................................ 43
Climate control ................................ 43
Driver's door .................................... 44
Convenience closing feature .............. 85
Convenience opening
With the SmartKey ......................... 123
Convenience opening feature ............ 85
Conversions/equipment .................... 33
Coolant (engine)
Adding ........................................... 255
Checking the level ......................... 253
Display messages (vehicle with
steering wheel buttons) ................. 220
Display messages (vehicle with-
out steering wheel buttons) ........... 204
Displaying the temperature (on-
board computer) ............................ 178
Filling capacity ............................... 311
Notes ............................................. 310
Temperature display in the
instrument cluster ......................... 175
Warning lamp ................................. 233
Cooling
see Climate control
Crosswind Assist ................................. 70
Cruise control
Activating ....................................... 148
Activation conditions ..................... 147
Cruise control lever ....................... 147
Deactivating ................................... 1488
Index

Instrument cluster (vehicles with steering wheel buttons)
Displays and controls
Function Page
:
Speedometer 175
;
Display 183
=
Tachometer 175
?
Coolant temperature gauge 175 Function Page
A
Fuel level
Fuel filler flap location indi-
cator t: the fuel filler
cap is on the left-hand side
B
Adjusts the instrument clus-
ter lighting
174
i
Information on the outside temperature
display can be found under "Outside tem-
perature display"
(Y page 175). 40
Instrument cluster (vehicles with steering wheel buttons)
At a glance

Observe the following when towing a trailer:
R Practice driving around bends, stopping and
backing up at a place where there is no traf-
fic. This enables you to gain experience and
get used to the new handling characteris-
tics.
R Before driving, check:
- that the trailer tow hitch and ball coupling
are secure
- that the safety switch for a braked trailer
is functioning properly
- that the safety chains are secure and not
damaged
- that the electrical connections are secure
- that the lights are working
- that the wheels are in good order and the
tire pressure is correct
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer is equipped with a separate
functional braking system, check before
each journey whether the brakes are func-
tioning correctly.
R Secure the load on the trailer according to
the applicable specifications and current
standards on securing loads
(Y page 244).
R When driving with a trailer, check at regular
intervals that the load is secured and that
the brakes and lights are working.
R Bear in mind that the handling will be less
stable when towing a trailer than when driv-
ing without one. Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly and has a
decreased gradient climbing capability and a
longer braking distance.
It is more susceptible to crosswinds and
requires cautious steering.
R If possible, do not brake suddenly, but
rather moderately at first so that the trailer
can activate its brakes. Then increase the
force on the brake pedal.
R If the automatic transmission repeatedly
shifts between gears when driving on
inclines, restrict the shift range. Select shift
range 4, 3, 2 or 1.
Driving in a low gear and at a low speed
reduces the risk of damaging the engine. R
When driving on a downhill gradient, shift to
a low gear and take advantage of the
engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
R If the coolant temperature increases dra-
matically while the air-conditioning system
is switched on, switch off the air-condition-
ing system.
Coolant heat can also be dissipated by
switching the airflow and the temperature of
the air conditioning to the maximum level.
Open the windows if necessary.
R When overtaking, pay particular attention to
the extended length of your vehicle/trailer
combination.
Due to the length of your vehicle/trailer
combination you need an additional dis-
tance before you can return to your original
lane. Uncoupling a trailer
G
WARNING
If you uncouple a trailer with the overrun
brake engaged, you could trap your hand
between the vehicle and the trailer drawbar.
There is a risk of injury.
Do not uncouple a trailer if the overrun
brake is engaged.
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the rebound-
ing of the overrun brake.
X Make sure that the selector lever of the
automatic transmission is in position P.
X Engage the vehicle's parking brake.
X Close all doors.
X Apply the parking brake of the trailer.
X In addition, secure the trailer against rolling
away with a wheel chock or similar object.
X Remove the trailer cable and safety chains
and decouple the trailer. Towing a trailer
171
Driving and parking Z

In daylight, the displays in the instrument clus-
ter are illuminated. A dimming function is not
possible in daylight.
On vehicles with steering wheel buttons, the
light sensor in the instrument cluster automat-
ically controls the brightness of the display
lighting.
While the lights are on, the brightness is
dependent upon the brightness of the ambient
light. You can also adjust the brightness of the
instrument lighting and the display lighting:
R by pressing the f and g buttons on the
instrument cluster on vehicles without
steering wheel buttons (not in the Settings
menu)
R by turning brightness control knob : on
vehicles with steering wheel buttons Speedometer
If you change the wheel size on your vehicle,
make sure it is assigned to the correct wheel
size category ( Y page
278). If you change
wheel size category without recoding the con-
trol unit, the speedometer indication will be
inaccurate. The current vehicle speed may
then be higher than the speed displayed in the
speedometer.
The speed can also be shown in the display in
the form of a digital speedometer:
R on vehicles without steering wheel buttons
(Y page 178)
R on vehicles with steering wheel buttons
(Y page 185)
i In some countries, a warning sounds
and/or the display shows a message when
the vehicle reaches the maximum legally
permissible speed limit, e.g. at 75 mph
(120 km/h). Tachometer
! Do not drive in the overrevving range, as
this could damage the engine. H
Environmental note
Avoid driving at high engine speeds. This
unnecessarily increases the fuel consump-
tion of your vehicle and harms the environ-
ment as a result of increased emissions. The red band in the tachometer indicates the
engine's overrevving range.
To protect the engine, the fuel supply is inter-
rupted when the red band is reached.
Outside temperature display
You should pay special attention to road con-
ditions when temperatures are around freezing
point.
Please bear in mind that the outside tempera-
ture display shows the air temperature meas-
ured and not the road temperature.
The display shows the outside temperature in
the header:
R on vehicles without steering wheel buttons
(Y page

176)
R on vehicles with steering wheel buttons
(Y page 183)
Changes in the outside temperature are dis-
played after a short delay. Coolant temperature gauge
G
WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
On vehicles without steering wheel buttons,
you can have the coolant temperature shown
in the display

(Y page 178).
On vehicles with steering wheel buttons, an
analog coolant temperature gauge is located
in the tachometer in the instrument cluster
(Y page 40). Under normal driving conditions and at the
correct coolant level, the display may rise to
the letter H or to the red mark. Display and operation
175
On-board computer and displays Z

120 km/h! (only for certain countries)
maximum permissible speed exceeded
= Display panel for display messages, menus
and menu bar
? Transmission position (Y page 132)
A Fuel level
Fuel filler flap location indicator t: the
fuel filler cap is on the left-hand side
B è Rear window wiper
(Y page 110)
Display panel = shows the selected menu or
submenu and display messages. Menu overview
The Settings menu is only displayed when
the vehicle is stationary. You can think of the
order of the menus and functions as a circle.
Press È on the instrument cluster to scroll
through the menus.
If you scroll forward in the Settings menu
using 3, the setting from the previous sub-
menu or function is adopted.
If you press È in a submenu, the submenu or
function is exited without adopting the setting.
The display then shows the start screen of the
Settings menu.
Operation information can be found under
"Operating the on-board computer"
(Y page

176).
Depending on the vehicle equipment, you can
call up the following menus, displays or func-
tions:
R trip odometer and odometer display
(Y page 177)
R trip computer display (Y page 177)
R current range display (Y page 178)
R current fuel consumption display
(Y page 178)
R digital speedometer ( Y page 178)
R coolant temperature gage (Y page 178)
R display messages in the message memory
(Y page 195)
The following menus, displays and functions
are only displayed when the vehicle is station-
ary:
R next service due date display ( Y page 258)
R tire pressure monitor restart (Y page 285)
R Settings menu for setting or activating/
deactivating driving and driver assistance systems as well as display options
(Y page

179) Distance menu
Odometer
If the display shows the speed in the header,
the display beside trip odometer : also
shows the outside temperature.
You can switch the permanent display in the
header

(Y page 180).
Use the buttons in the instrument cluster.
X To display: press and hold È until the dis-
play shows trip odometer : and odome-
ter ;.
X To reset: press and hold 3 until the trip
odometer is reset to 0.0.
You can set the unit of measurement for the
trip odometer in the Distance Unit: sub-
menu (Y page

180). Trip computer menu
Trip computer
:
Distance
; Length of journey
= Average fuel consumption
? Average speed On-board computer (vehicles without steering wheel buttons)
177
On-board computer and displays Z

Use the buttons in the instrument cluster.
X Press È to select the ? coolant temper-
ature bar display.
Under normal driving conditions and at the
correct coolant level, the display may rise to
the letter H. Settings menu
Introduction Settings menu start screen
The vehicle must be stationary. Use the but-
tons in the instrument cluster. X To display: press È to select the Set‐
tings menu.
The Settings menu is only displayed when
the vehicle is stationary. You can think of the
order of the submenus and functions as a cir-
cle. Press 3 on the instrument cluster to
scroll through the menu and select its subme-
nus or functions successively.
If you scroll forward using 3, the setting from
the previous submenu or function is adopted.
If you press È in a submenu, the submenu or
function is exited without adopting the setting.
The display then shows the start screen of the
Settings menu.
Depending on the vehicle’s equipment, you
have the following options in the Settings
menu:
R Setting the language for the display mes-
sages and displays
(Y page 179)
R Deactivating and activating ESP ®
( Y page 179) R
Setting the sensitivity of the rain sensor
( Y page

180)
R Activating and deactivating ATTENTION
ASSIST (Y page 180)
R Selecting the permanent display in the
header of the display ( Y page 180)
R Setting the unit for distance, consumption
and speed displays (Y page 180)
R Setting the time and date ( Y page 181)
X To reset settings to the factory settings:
turn the key to position 1 in the ignition lock
and press and hold 3 in the Settings
menu for at least five seconds.
For safety reasons, not all functions are reset.
Setting the display language The vehicle must be stationary. Use the but-
tons in the instrument cluster.
X Press È to select the Settings menu.
X Press 3 to select the Language submenu.
The display shows the current language
selection.
X Press f or g to set the language for all
display messages.
X Press 3 to confirm.
The next submenu is shown in the display.
Deactivating/activating ESP ® This menu is only available on vehicles without
the å button on the center console.
Please observe the important safety notes
under "ESP ®
(Electronic Stability Program)"
(Y page

68). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations
described in the following.
It may be best to deactivate ESP ®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel On-board computer (vehicles without steering wheel buttons)
179
On-board computer and displays Z

Engine
Display messages
Possible causes/consequences and
M Solutions# An additional warning tone sounds. The battery is not being
charged.
Possible causes:
R faulty alternator
R torn poly-V-belt
R a malfunction in the electronics
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
! Do not drive any further. Otherwise the engine may overheat.
X Secure the vehicle to prevent it from rolling away ( Y page 138).
X Consult a qualified specialist workshop. ?
Stop Vehicle Turn
Eng. Off An additional warning tone sounds. The coolant is too hot.
G WARNING
Never drive with an overheated engine. Driving when the engine is
overheated can cause fluids which may have leaked into the engine
compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the hood.
There is a risk of injury.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Secure the vehicle to prevent it from rolling away ( Y page
138).
X Wait until the engine has cooled down.
X Make sure that the air supply to the radiator is not obstructed, by
frozen slush for example.
X Do not start the engine again until the display message goes out
and the coolant temperature is below the maximum value speci-
fied. The engine could otherwise be damaged.
X Pay attention to the coolant temperature gauge (Y page
178).
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal driving conditions and at the correct coolant level, the
coolant temperature gauge may rise to the letter H.204
Display messages (vehicles without steering wheel buttons)
On-board computer and displays

Display messages
Possible causes/consequences and
M Solutions? The fan motor is faulty.
X Check the coolant temperature (Y page 178).
X If the coolant temperature is below the maximum value specified
below, you can continue driving to the nearest qualified specialist
workshop.
Avoid heavy loads on the engine, e.g. driving in mountainous ter-
rain, and stop-and-go traffic.
Under normal driving conditions and at the correct coolant level, the
coolant temperature gauge may rise to the letter H.Check Coolant Level
+ The coolant level is too low.
! Avoid longer journeys when there is insufficient coolant in the
engine cooling system. You could otherwise damage the engine.
X Add coolant, making sure to observe the warning notes
(Y page
253).
X Have the engine cooling system checked at a qualified specialist
workshop if the coolant needs to be refilled more often than
usual. 4
Check Engine Oil
Level An additional warning tone sounds. The engine oil level has dropped
to the minimum level.
X Check the oil level at the latest when next refueling
(Y page

252).
X If necessary, add engine oil ( Y page
253).
X Have the engine checked at a qualified specialist workshop if you
need to add engine oil more often than usual.
! Avoid longer journeys when there is insufficient engine oil. You
could otherwise damage the engine. Manually Check Oil
Level Reminder to check the oil level.
X Check the oil level at the latest when next refueling
(Y page
252).
X If necessary, add engine oil (Y page
253).
X To confirm the oil check: press and hold 3.
! Avoid longer journeys when there is insufficient engine oil. You
could otherwise damage the engine. 4
Stop Vehicle Turn
Eng. Off The oil level is too low. There is a risk of engine damage.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Secure the vehicle to prevent it from rolling away ( Y page
138).
X Check the oil level ( Y page
252).
X If necessary, add engine oil (Y page
253).Display messages (vehicles without steering wheel buttons)
205
On-board computer and displays Z