2017 MERCEDES-BENZ METRIS coolant level

Cleaningsee Care
Climate control
Air conditioning in the rear com-
partment ........................................ 111
Control panel for dual-zone auto-
matic climate control .................... .110
Controlling automatically ...............1 13
Cooling with air dehumidification .. 112
Defrosting the windows ................. 116
Defrosting the windshield .............. 115
Important safety notes .................. 108
Information on dual-zone auto-
matic climate control ..................... 110
Information on TEMPMATIC (air-
conditioning system) ..................... 109
Overview of systems ......................1 08
Problem with the rear window
defroster ........................................ 116
Rear-compartment air condition-
ing ................................................. 111
Refrigerant ..................................... 310
Refrigerant filling capacity ............. 310
Setting the air distribution ............. 114
Setting the air vents ......................1 18
Setting the airflow ......................... 114
Setting the temperature ................ 113
Switching air-recirculation mode
on/off ............................................ 116
Switching on/off ........................... 111
Switching residual heat on/off ...... 117
Switching the rear window
defroster on/off ............................ 116
Switching the synchronization
function on and off ........................ 115
TEMPMATIC control panel (air
conditioning) .................................. 109
Clock
Setting (vehicle without steering
wheel buttons) ............................... 176
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
C

OLLISION PREVENTION ASSIST
Activating/deactivating the dis-
tance warning function .................. 185
Adaptive Brake Assist .................... 145
Display message ............................ 214
Distance warning function ............. 144
Operation/notes ............................ 144
Collision warning
see COLLISION PREVENTION ASSIST
COMAND display
Cleaning ......................................... 268
Combination switch ............................ 96
Communications equipment
Operation ....................................... 241
Type approval/frequency .............. 303
Consumption statistics
Fuel (vehicle with steering wheel
buttons) ......................................... 179
Fuel (vehicle without steering
wheel buttons) ............................... 172
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 ........................ .117
Convenience opening feature ............ 82
Conversions/equipment .................... 32
Coolant (engine)
Adding ...........................................2 55
Checking the level ......................... 253
Display messages (vehicle with
steering wheel buttons) ................. 213
Display messages (vehicle with-
out steering wheel buttons) ........... 198
Displaying the temperature (on-
board computer) ............................ 173
Filling capacity ............................... 310
Notes ............................................. 309
Temperature display in the instru-
ment cluster .................................. 170
Warning lamp ................................. 225
Cooling
see Climate control
8Index

tened to the vehicle's trailer coupling, not to
the bumper or the axle.
Leave enough slack in the chains. This allows
you to drive round tight corners.
Ra separate brake system for certain types of
trailer.
Ra safety shut-off for braked trailers. Find out
the specific requirements according to the
applicable laws.
If the trailer becomes detached from the tow-
ing vehicle, the safety shut-off applies the
trailer brakes.
Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed restric-
tions. Many states require a separate functional
braking system for your trailer once a certain
weight limit is exceeded. For reasons of safety,
it is recommended that all trailers use a sepa-
rate functional braking system. Make sure yourvehicle/trailer combination complies with local
laws. This not only means where you live, but
also anywhere you are driving to. Information on
this can be obtained from the police and local
authorities.
Observe the following when towing a trailer:
RPractice driving around bends, stopping and
backing up at a place where there is no traffic.
This enables you to gain experience and get
used to the new handling characteristics.
RBefore 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
RAdjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
RIf the trailer is equipped with a separate func-
tional braking system, check before each
journey whether the brakes are functioning
correctly.
RSecure the load on the trailer according to the
applicable specifications and current stand-
ards on securing loads (
Ypage 244).
RWhen driving with a trailer, check at regular
intervals that the load is secured and that the
brakes and lights are working.
RBear in mind that the handling will be less
stable when towing a trailer than when driving
without one. Avoid sudden steering move-
ments.
RThe 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.
RIf possible, do not brake suddenly, but rather
moderately at first so that the trailer can acti-
vate its brakes. Then increase the force on the
brake pedal.
RIf the automatic transmission repeatedly
shifts between gears when driving on inclines,
restrict the shift range. Select shift range
4,3 ,
2 o

r 1.
Driving in a low gear and at a low speed
reduces the risk of damaging the engine.
RWhen 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 instal-
led, the trailer brakes.
RIf the coolant temperature increases dramat-
ically while the air-conditioning system is
switched on, switch off the air-conditioning
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.
RWhen overtaking, pay particular attention to
the extended length of your vehicle/trailer
combination.
Due to the length of your vehicle/trailer com- bination you need an additional distance
before you can return to your original lane.
166Towing a trailer
Driving an d parking

On vehicles with steering wheel buttons, the
light sensor in the instrument cluster automati-
cally controls the brightness of the display light-
ing.
While the lights are on, the brightness is depend-
ent upon the brightness of the ambient light.
You can also adjust the brightness of the instru-
ment lighting and the display lighting
Rby pressing thefand gbuttons on the
instrument cluster on vehicles without steer-
ing wheel buttons (not in the Settings
menu)
Rby turning brightness control knob :on vehi-
cles 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 (
Ypage 277). If you change wheel
size category without recoding the control 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:
Ron vehicles without steering wheel buttons
(Ypage 173)
Ron vehicles with steering wheel buttons
(Ypage 179)
iIn some countries, a warning sounds and/or
the display shows a message when the vehi-
cle 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.
HEnvironmental note
Avoid driving at high engine speeds. This
unnecessarily increases the fuel consumption
of your vehicle and harms the environment 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 condi-
tions 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:
Ron vehicles without steering wheel buttons
(Ypage 171)
Ron vehicles with steering wheel buttons
(Ypage 177)
Changes in the outside temperature are dis-
played after a short delay.
Coolant temperature gauge
GWARNING
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 (
Ypage 173).
On vehicles with steering wheel buttons, an ana-
log coolant temperature gage is located in the
tachometer in the instrument cluster
(
Ypage 39).
Under normal operating conditions and with the
specified coolant level, the gauge may rise to
248 ‡ (120 †).
170Display and operation
On-board computer and displays

120km/h!(only for certain countries) max-
imum permissible speed exceeded
=Display panel for display messages, menus
and menu bar
?Transmission position (Ypage 127)
AFuel level
Bè ECO start/stop function
(Ypage 123)
Cè Rear window wiper (Ypage 104)
Display panel =shows the selected menu or
submenu and display messages.
Menu overview
The Settingsmenu 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 submenu or
function is adopted.
If you press Èin 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"
(
Ypage 171).
Depending on the vehicle equipment, you can
call up the following menus, displays or func-
tions:
Rtrip odometer and odometer display
(Ypage 172)
Rtrip computer display (Ypage 172)
Rcurrent range display (Ypage 173)
Rcurrent fuel consumption display
(Ypage 173)
Rdigital speedometer (Ypage 173)
Rcoolant temperature gage (Ypage 173)
Rdisplay messages in the message memory
(Ypage 189)
The following menus, displays and functions are only displayed when the vehicle is stationary:
Rnext service due date display (Ypage 258)
Rtire pressure monitor restart (Ypage 284)
RSettingsmenu for setting or activating/
deactivating driving and driver assistance systems as well as display options
(
Ypage 174)
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 (
Ypage 175).
Use the buttons in the instrument cluster.
XTo display: press and hold Èuntil the dis-
play shows trip odometer :and odome-
ter ;.
XTo reset: press and hold 3until the trip
odometer is reset to 0.0
.
You can set the unit of measurement for the trip odometer in the Distance Unit:
submenu
(Ypage 175).
Trip computer menu
Trip computer
:
Distance
;Length of journey
=Average fuel consumption
?Average speed
172On-board computer (vehicles without steering wheel buttons)
On-board computer and displays

Use the buttons in the instrument cluster.
XTo display:pressÈto select the trip com-
puter display.
The values displayed relate to those meas-
ured since the trip computer was last reset.
XTo reset values: press and hold3until all
values are reset.
The trip computer is automatically reset if the
value exceeds 9,999 hours or 99,999 miles.
You can set the unit of measurement for con-
sumption and distance in the Distance Unit:
submenu (Ypage 175).
Range menu
Use the buttons in the instrument cluster.
XPressÈto select the Rangedisplay.
The approximate range that can be covered is calculated according to your current driving
style and the amount of fuel in the tank. If
there is only a small amount of fuel left in the
fuel tank, the display shows a vehicle being
refueled Ïinstead of the approximate
range.
You can set the unit of measurement for dis-
tance in the Distance Unit:
submenu
(Ypage 175).
Current fuel consumption menu
:Recuperation display
;Range Use the buttons in the instrument cluster.
XPress
Èto select the fuel consumption bar
display.
Recuperation display :shows whether, and, if
so, how much kinetic energy is being trans-
formed into electric current whilst the vehicle is
coasting. The recuperated energy is then stored in the starter battery. Recuperation display :is
dependent on the engine installed and is there-
fore not available in all vehicles.
You can set the unit of measurement for con-
sumption in the Distance Unit:
submenu
(Ypage 175).
Digital speedometer menu
Use the buttons in the instrument cluster.
XPress Èto select the speed display.
You can set the unit for the digital speedometer
in the Distance
Unit:submenu (Ypage 175).
Coolant temperature menu
GWARNING
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.
Use the buttons in the instrument cluster.
XPress Èto select the ?coolant temper-
ature bar display.
Under normal operating conditions and with the
specified coolant level, the gauge may rise to
248 ‡ (120 †).
On-board computer (vehicles without steering wheel buttons)173
On-board computer and displays
Z

Engine
Display messagesPossible causes/consequences andMSolutions
#An additional warning tone sounds. The battery is not being charged.
Possible causes:
Rfaulty alternator
Rtorn poly-V-belt
Ra malfunction in the electronics
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
!Do not continue driving. The engine could otherwise overheat.
XSecure the vehicle to prevent it from rolling away (Ypage 133).
XConsult a qualified specialist workshop.
?
Stop Vehicle TurnEng. Off
An additional warning tone sounds. The coolant is too hot.
GWARNING
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.
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
XSecure the vehicle to prevent it from rolling away (Ypage 133).
XWait until the engine has cooled down.
XMake sure that the air supply to the radiator is not obstructed, by
frozen slush for example.
XDo not start the engine again until the display message goes out and
the coolant temperature is below the maximum value specified. The
engine could otherwise be damaged.
XPay attention to the coolant temperature gage (Ypage 173).
XIf the temperature increases again, visit a qualified specialist work-
shop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature gage may rise to 248 ‡ (120 †).
?The fan motor is faulty.
XCheck the coolant temperature (Ypage 173).
XIf 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 terrain,
and stop-and-go traffic.
Under normal operating conditions and with the specified coolant
level, the coolant temperature gage may rise to 248 ‡ (120 †).
198Display messages (vehicles without steering wheel buttons)
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Check CoolantLevel
+
The coolan tlevel is to olow.
!Avoid making lon gjourneys wit hto olittl ecoolan tin th eengin e
coolin gsystem. The engin ewill otherwise be damaged.
XAd dcoolant, making sur eto observ eth ewarning note s
(Ypage 253).
XHav eth eengin ecoolin gsystem checke dat aqualified specialist
workshop if th ecoolan tneeds to be refilled mor eoften than usual.
4
Check Engine OilLevel
An additional warning tone sounds. The engin eoil level has dropped to
th eminimum level.
XChec kth eoil level at th elatest when next refuelin g (Ypage 252).
XIf necessary, add engineoil (Ypage 253).
XTo confir mtheoil check :press and hold 3.
XHaveth eengin echecke dat aqualified specialist workshop if you
need to add engin eoil mor eoften than usual.
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill oth-
erwise be damaged.
Manually Check OilLevelReminder to chec kth eoil level.
XChec kth eoil level at th elatest when next refuelin g (Ypage 252).
XIf necessary, add engineoil (Ypage 253).
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill oth-
erwise be damaged.
4
Sto pVehicl eTur nEng.Off
The oil level is to olow. There is aris kof engin edamage.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions, and switch off th eengine.
XSecur eth evehicl eto preven tit from rollin gaway (Ypage 133).
XCheckth eoil level (Ypage 252).
XIf necessary, add engin eoil (Ypage 253).
æ
Reserv eFue l
The fuel level has dropped to th ereserv erange.
XRefue lat th eneares tgas station .
ÏThere is ver ylittl efuel in th efuel tank.
XRefue lat th eneares tgas station without fail .
Display messages (vehicles without steering wheelbu ttons)199
On-board computer and displays
Z

Engine
Display messagesPossible causes/consequences andMSolutions
#An additional warning tone sounds. The battery is not being charged.
Possible causes:
Rfaulty alternator
Rtorn poly-V-belt
Ra malfunction in the electronics
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
!Do not continue driving. The engine could otherwise overheat.
XSecure the vehicle to prevent it from rolling away (Ypage 133).
XConsult a qualified specialist workshop.
?
Coolant Too Hot:Stop Vehicle TurnEngine Off
An additional warning tone sounds. The coolant is too hot.
GWARNING
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.
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
XSecure the vehicle to prevent it from rolling away (Ypage 133).
XWait until the engine has cooled down.
XMake sure that the air supply to the radiator is not obstructed, by
frozen slush for example.
XDo not start the engine again until the display message goes out and
the coolant temperature is below the maximum value specified. The
engine could otherwise be damaged.
XMonitor the ?coolant temperature gage in the instrument clus-
ter.
XIf the temperature increases again, visit a qualified specialist work-
shop immediately.
Under normal operating conditions and with the specified coolant
level, the ?gage may rise to 248 ‡ (120 †).
212Display messages (vehicles with steering wheel buttons)
On-board computer and displays