2019 MERCEDES-BENZ METRIS coolant

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 279). 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 175)
ROn vehicles with steering wheel buttons
(Ypage 181)
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 173)
Ron vehicles with steering wheel buttons
(Ypage 179)
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 175).
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 †).
172Display 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 129)
AFuel level
Bè ECO start/stop function
(Ypage 125)
Cè Rear window wiper (Ypage 106)
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 173).
Depending on the vehicle equipment, you can
call up the following menus, displays or func-
tions:
Rtrip odometer and odometer display
(Ypage 174)
Rtrip computer display (Ypage 174)
Rcurrent range display (Ypage 175)
Rcurrent fuel consumption display
(Ypage 175)
Rdigital speedometer (Ypage 175)
Rcoolant temperature gage (Ypage 175)
Rdisplay messages in the message memory
(Ypage 191)
The following menus, displays and functions are only displayed when the vehicle is stationary:
Rnext service due date display (Ypage 260)
Rtire pressure monitor restart (Ypage 286)
RSettingsmenu for setting or activating/
deactivating driving and driver assistance systems as well as display options
(
Ypage 176)
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 177).
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 177).
Trip computer menu
Trip computer
:
Distance
;Length of journey
=Average fuel consumption
?Average speed
174On-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 177).
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 177).
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 177).
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 177).
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)175
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 135).
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 135).
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 gauge (Ypage 175).
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 gauge may rise to 248 ‡ (120 †).
?The fan motor is faulty.
XCheck the coolant temperature (Ypage 175).
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 gauge may rise to 248 ‡ (120 †).
200Display 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 255).
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 254).
XIf necessary, add engineoil (Ypage 255).
XHav eth 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 254).
XIf necessary, add engineoil (Ypage 255).
XTo confir mtheoil check :press and hold 3.
!Avoid longjourneys 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 135).
XCheckth eoil level (Ypage 254).
XIf necessary, add engin eoil (Ypage 255).
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)201
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 135).
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 135).
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 gauge in the instrument
cluster.
XIf the temperature increases again, visit a qualified specialist work-
shop immediately.
Under normal operating conditions and with the specified coolant
level, the ?gauge may rise to 248 ‡ (120 †).
214Display messages (vehicles with steering wheel buttons)
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
?The fan motor is faulty.
XCheckth e? coolan ttemperature gauge in th einstrumen tclus -
ter.
If th ecoolan ttemperature is belo wthemaximum value specified
below, you can continu edrivin gto th eneares tqualified specialist
workshop .
Avoid heav yloads on th eengine, e.g. drivin gin mountainous terrain ,
and stop-start traffic.
Under normal operating condition sand wit hth especified coolan t
level, th e? gauge may ris eto 24 8 ‡(120†).
+
CheckCoolan tLevelSee Oper. Manual
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 255).
XHav eth eengin ecoolin gsystem checke dat aqualified specialist
workshop if th ecoolan tneeds to be refilled mor eoften than usual.
4
CheckEngineOilAtNex tRefueling
XChec kth eoil level at th elatest when next refuelin g (Ypage 254).
XIf necessary, add engineoil (Ypage 255).
XHav eth 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.
4
Manually Check OilLevel
Reminder to chec kth eoil level.
XChec kth eoil level at th elatest when next refuelin g (Ypage 254).
XIf necessary, add engineoil (Ypage 255).
XTo confir mtheoil check :press a.
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill oth-
erwise be damaged.
4
Eng .OilLevelLow:StopVehicl eTur nEngine 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 135).
XCheckth eoil level (Ypage 254).
XIf necessary, add engin eoil (Ypage 255).
æ
Fue lLevel Low
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 withsteering whee lbu ttons)215
On-board computer and displays
Z

Engine
Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
;NThe yellow Check Engine warning lamp lights up while the engine is running.
There may be a malfunction, for example:
Rin the engine management
Rin the transmission management
Rin the fuel injection system
Rin the exhaust system
Rin the ignition system (for vehicles with a gasoline engine)
Rin the fuel system
The emission limit values may be exceeded and the engine may be running in
emergency mode.
XHave the vehicle checked as soon as possible at a qualified specialist workshop.
æN The yellow reserve fuel warning lamp is on while the engine is running.
The fuel level has dropped to the reserve range.
XRefuel at the nearest gas station.
?N The red coolant warning lamp comes on while the engine is running.
On vehicles without steering wheel buttons, the coolant temperature gage is at the
start of the bar display (
Ypage 175).
On vehicles with steering wheel buttons, the coolant temperature gage is at the
start of the scale in the instrument cluster (
Ypage 39).
The temperature sensor for the coolant temperature gage is faulty.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
XStop the vehicle immediately, paying attention to road and traffic conditions,
and switch off the engine. Do not continue driving under any circumstances.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XConsult a qualified specialist workshop.
Indicator and warning lamps in the instrument cluster227
On-board computer and displays
Z