2018 MERCEDES-BENZ METRIS buttons

Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
?NThe red coolant warning lamp comes on while the engine is running.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may be blocked or
the electric engine radiator fan may be malfunctioning.
The coolant is too hot and the engine is no longer being cooled sufficiently.
XObserve the display messages.
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).
XExit the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
XCheck the coolant level and add coolant, observing the warning notes
(Ypage 255).
XIf you have to add coolant more frequently, have the engine cooling system
checked.
XMake sure that the air supply to the radiator is not obstructed, by frozen slush
for example.
XCheck the coolant temperature:
Rusing the display in the on-board computer on vehicles without steering wheel
buttons (Ypage 175)
Rusing the analog display in the instrument cluster on vehicles with steering
wheel buttons (Ypage 39)
XDo not start the engine again until the coolant temperature is below the maxi-
mum value specified below. The engine could otherwise be damaged.
XDrive to the nearest qualified specialist workshop.
Avoid heavy loads on the engine, e.g. driving in mountainous terrain, and stop-
start traffic.
Under normal operating conditions and with the specified coolant level, the cool-
ant temperature gage may rise to 248 ‡ (120 †).
?N The red coolant warning lamp comes on while the engine is running. An addi-
tional warning tone sounds.
The coolant temperature has exceeded the maximum value specified below. The
airflow to the engine radiator may be blocked or the coolant level may be too low.
GWARNING
The engine is not being cooled adequately and could become damaged.
Never drive with an overheated engine. Otherwise, fluids which may have leaked
into the engine compartment could 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.
XObserve the display messages.
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).
228Indicator and warning lamps in the instrument cluster
On-board computer and displays

Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
XExit the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
XCheck the coolant level and add coolant, observing the warning notes
(Ypage 255).
XIf you have to add coolant more frequently, have the engine cooling system
checked.
XMake sure that the air supply to the radiator is not obstructed, by frozen slush
for example.
XCheck the coolant temperature:
Rusing the display in the on-board computer on vehicles without steering wheel
buttons (Ypage 175)
Rusing the analog display in the instrument cluster on vehicles with steering
wheel buttons (Ypage 39)
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-
start traffic.
Under normal operating conditions and with the specified coolant level, the cool-
ant temperature gage may rise to 248 ‡ (120 †).
Driving systems
Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
·NThe red distance warning lamp lights up while the vehicle is in motion.
The distance to the vehicle in front is too small for the speed selected.
XIncrease the distance.
·N The red distance warning lamp lights up while the vehicle is in motion. An
additional warning tone sounds.
You are approaching a vehicle or a stationary obstacle in your line of travel at too
high a speed.
XBe prepared to brake immediately.
XPay particular attention to the traffic situation. You may have to brake or take
evasive action.
Further information about the distance warning function can be found under
"COLLISION PREVENTION ASSIST" (
Ypage 146).
Indicator and warning lamps in the instrument cluster229
On-board computer and displays
Z

Tires
Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
hNThe yellow tire pressure monitor warning lamp (pressure loss/malfunction) is lit.
The tire pressure monitor has detected a loss of pressure in at least one of the tires.
GWARNING
Underinflated tires pose the following risks:
RThe tires may burst, especially as the load and vehicle speed increase.
RThe tires may wear excessively and/or unevenly, which may greatly impair tire traction.
RThe handling as well as steering and braking characteristics may be severely
affected.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking maneuvers. Pay
attention to the traffic conditions while doing so.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XObserve the display messages.
XCheck the tires and, if necessary, change the wheel (Ypage 298).
XCheck the tire pressure.
You can check the tire pressure electronically on vehicles with steering wheel
buttons (
Ypage 286).
XIf necessary, correct the tire pressure.
hN The yellow tire pressure monitor (pressure loss/malfunction) warning lamp
flashes for approximately one minute and then remains lit.
The tire pressure monitor is malfunctioning.
GWARNING
The system may not be able to detect or signal low tire pressure as intended.
There is a risk of an accident.
XObserve the display messages.
XVisit a qualified specialist workshop.
230Indicator and warninglamps in the instrument cluster
On-board computer and displays

Rfrequent operation in mountainous terrain or
on poor road surfaces
Rleaving the engine idling for long periods on a
frequent basis
In these or similar operating conditions, have
the air filter, engine oil and oil filter, for example,
replaced more frequently. Under more arduous
operating conditions, the tires must be checked more often. Further information can be obtained
at a qualified specialist workshop, e.g. an
authorized Mercedes-Benz Commercial Van
Center.
Hiding service messages
Vehicles without steering wheel buttons
XPress the 3button on the instrument clus-
ter.
Vehicles with steering wheel buttons
XPress the aor% button on the steering
wheel.
Calling up the service due date
Vehicles without steering wheel buttons
The vehicle must be stationary. Use the buttons
in the instrument cluster.
XTurn the SmartKey to position 2in the ignition
lock.
XPress Èto select the service display.
The display shows a possible service mes-
sage.
Vehicles with steering wheel buttons
Using the steering wheel buttons
XTurn the SmartKey to position 2in the ignition
lock.
XPress =or; to select the Servicemenu.
XPress9or: to select the ASSYSTPLUSsubmenu and press ato confirm.
The display shows the service due date.
Battery
Important safety notes
Work on the battery, e.g. removing or installing,
requires specialist knowledge and the use of
special tools. Therefore, always have work on the battery carried out at a qualified specialist
workshop.
GWARNING
Work carried out incorrectly on the battery
can lead, for example, to a short circuit and
thus damage the vehicle electronics. This can
lead to function restrictions applying to
safety-relevant systems, e.g. the lighting sys-
tem, the ABS (anti-lock braking system) or the
ESP
®(Electronic Stability Program). The oper-
ating safety of your vehicle may be restricted.
You could lose control of the vehicle, for
example:
Rwhen braking
Rin the event of abrupt steering maneuvers
and/or when the vehicle's speed is not
adapted to the road conditions
There is a risk of an accident.
In the event of a short circuit or a similar inci-
dent, contact a qualified specialist workshop
immediately. Do not drive any further. You
should have all work involving the battery car- ried out at a qualified specialist workshop.
Further information can be found under "ABS"
(
Ypage 64) and under "ESP®" (Ypage 65).
GWARNING
Electrostatic build-up can lead to the creation of sparks, which could ignite the highly explo-
sive gases of a battery. There is a risk of an
explosion.
Before handling the battery, touch the vehicle
body to remove any existing electrostatic
build-up.
The flammable gas mix is produced when the
battery is charged or when the vehicle is jump-
started.
Always make sure that neither you nor the bat-
tery are electro statically charged. Electrostatic
charging results, for example, from:
Rwearing synthetic clothing
Rfriction between clothing and the seat
Rdragging or pushing the battery across carpet
flooring or any other synthetic materials
Rrubbing the battery with cloths or towels.
260Battery
Maintenance and care

Maximum tire pressures
:Maximum permitted tire pressure (example)
Never exceed the maximum permissible tire
inflation pressure. When adjusting the tire pres-
sures always observe the recommended tire
pressure for your vehicle (
Ypage 282).
iThe actual values for tires are specific to
each vehicle and may deviate from the values
in the illustration.
Tire valve (snap-in valve)
Important safety notes
GWARNING
Tire valve that are not approved for your vehi-
cle by the distributor named on the inside
cover page may result in a loss of tire pres-
sure. This may affect road safety. There is a
risk of an accident.
Only use tire valve that are approved for your
vehicle by the distributor named on the inside
cover page. Always make sure you have the
correct tire valve type for the tires on your
vehicle.
!Do not screw additional weights (check
valves, etc.) onto the tire valves. The elec-
tronic components could thus be damaged.
iFor safety reasons, Mercedes-Benz recom-
mends that you only use tire valves that have been tested for use on your vehicle.
Checking the tire pressure manually
In order to determine and adjust the tire pres-
sures, proceed as follows:
XRemove the valve cap of the tire you wish to
check.
XPress the tire pressure gauge securely onto
the valve.
XRead the tire pressure and compare it with the
recommended value on the loading informa-
tion table or the tire pressure table
(
Ypage 282).
XIf the tire pressure is too low, increase it to the
recommended value.
XIf the tire pressure is too high, release air by
pressing down the metal pin in the valve. Use
the tip of a pen, for example. Then, check the
tire pressure again using the tire pressure
gauge.
XScrew the valve cap onto the valve.
XRepeat the steps for the other tires.
Tire pressure monitor
General notes
In vehicles with a tire pressure monitor system,
the vehicle's wheels have sensors installed
which monitor the tire pressure in all four tires.
The tire pressure monitor warns you if the pres- sure drops in one or more of the tires. The tire
pressure monitor only functions if the corre-
sponding sensors are installed on all wheels.
Tire pressure display (only on vehicles with steer-
ing wheel buttons)
On vehicles with steering-wheel buttons, the
current pressure of the individual wheels in the
display can be shown via the Service
menu.
286Tire pressure
Wheels and tires

nificantly too low. The tire pressure monitor is
not malfunctioning.
RUSA only: if thehwarning lamp flashes for
60 seconds and then remains lit constantly,
the tire pressure monitor is malfunctioning.
The display also shows a message:
Ron vehicles without steering wheel buttons
(Ypage 203)
Ron vehicles with steering wheel buttons
(Ypage 219)
USA only: if the tire pressure monitor is mal-
functioning, it may be more than ten minutes
before the malfunction is shown. The htire
pressure warning lamp flashes for 60 seconds
and then remains lit. When the malfunction has
been rectified, the htire pressure warning
lamp goes out after a few minutes of driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at a gas station with a pressure gauge.
The tire pressures shown by the on-board com-
puter refer to those measured at sea level. At
high altitudes, the tire pressure values indicated
by a pressure gauge are higher than those
shown by the on-board computer. In this case,
do not reduce the tire pressures.
If radio transmitting equipment (e.g. wireless
headphones, two-way radios) is operated inside
the vehicle or in the vicinity of the vehicle, this
can interfere wi th th
e operation of the tire pres-
sure monitor.
Checking the tire pressure electroni-
cally on vehicles with steering wheel
buttons
You can only check the tire pressure electroni-
cally on vehicles with steering wheel buttons.
Using the steering wheel buttons
XTurn the key to position 2in the ignition
lock.
XPress the =or; button to select the
Servicemenu.
XUse the 9or: button to select TirePressure.
XPressato confirm.
The current tire pressure of each wheel is
shown in the display.
If the vehicle has been parked for over
20 minutes, the Tire pressure will be
displayed after driving a few minutesmessage appears.
After a teach-in period, the tire pressure monitor
automatically detects new wheels or new sen-
sors. As long as a clear allocation of the tire
pressure value to the individual wheels is not
possible, theTire
PressureMonitorActivemessage is shown instead of the tire pressure
display. The tire pressures are already being
monitored.
Tire pressure monitor warning mes-
sages
If the tire pressure monitor detects a loss in
pressure in one or more tires, a warning mes-
sage is shown in the display. The hwarning
lamp lights up.
Vehicles without steering wheel buttons
RIf the Correct Tire Pressuremessage is
shown in the display, the tire pressure in at
least one tire is too low. The tire pressure
must be corrected at the next opportunity.
RIf the CheckTirePressureSoonmessage
is shown in the display, the tire pressure in
one or more tires has dropped significantly.
The tires must be checked.
RIf the Warning Tire Malfunc.message is
shown in the display, the tire pressure in one
or more tires has dropped suddenly. The tires
must be checked.
Vehicles with steering wheel buttons
RIf the Adjust Tire Pressuremessage is
shown in the display, the tire pressure in at
least one tire is too low. The tire pressure
must be corrected at the next opportunity.
RIf the Check Tiresmessage is shown in the
display, the tire pressure in one or more tires has dropped significantly. The tires must be
checked.
RIf the WarningTireMalfunctionmessage
is shown in the display, the tire pressure in
one or more tires has dropped suddenly. The
tires must be checked.
Always read and follow the instructions and
safety notes related to the display messages,
which can be found in the "Tires" section.
Rfor vehicles without steering wheel buttons
(Ypage 203)
Rfor vehicles with steering wheel buttons
(Ypage 219)
288Tire pressure
Wheels and tires

Vehicles with steering wheel buttons:if the
wheel positions on the vehicle are rotated, the
tire pressures may be displayed for the wrong
positions for a short time. This is rectified after a
few minutes of driving; the tire pressures are
then displayed for the correct positions.
Restarting the tire pressure monitor
General notes
When you restart the tire pressure monitor, all
existing warning messages are deleted and the
warning lamp goes out. The monitor uses the
currently set tire pressures as the reference val-
ues for monitoring. In most cases, the tire pres-
sure monitor will automatically detect the new
reference values after you have changed the tire
pressure. However, you can also set reference
values manually as described here. The tire
pressure monitor then monitors the new tire
pressure values.
Vehicles without steering wheel buttons
The vehicle must be stationary. Use the buttons
in the instrument cluster.
XTurn the key to position 2in the ignition
lock.
XUsing Èselect the Tire Pressuremenu.
XPress3to confirm.
The display shows the Monitoring Active
message.
XPress3to confirm.
The display shows the Tire Pressure OK?
message.
If you wish to confirm the restart:
XPress the fbutton.
The display shows the distance menu.
After you have driven for a few minutes, the
system checks whether the current tire pres-
sures are within the specified range. The new tire pressure levels are then accepted as ref-
erence values and monitored.
If you wish to cancel the restart:
XPress the gbutton.
The display shows the tire pressure menu.
The tire pressure values stored at the last
restart will continue to be monitored.
Vehicles with steering wheel buttons
Using the steering wheel buttons
XMake sure that the tire pressure of all four
wheels is set correctly for the current oper-
ating conditions. When doing so, observe the
notes under "Tire pressure" (
Ypage 282).
XTurn the key to position 2in the ignition
lock.
XPress the =or; button to select the
Servicemenu.
XSelect the Tire Pressuresubmenu with
9 or:.
XPress ato confirm.
The display shows either the current tire pres-
sure for the individual tires, or the Tire
pressure will be displayed afterdriving a few minutesmessage.
XPress the:button.
The display shows the Use Current Pres‐
sures as New Reference Values:mes-
sage.
If you wish to confirm the restart:
XPress the abutton.
The display shows the Tire Press. Moni‐
tor Restartedmessage.
After you have driven for a few minutes, the
system checks whether the current tire pres-
sures are within the specified range. The new
tire pressure levels are then accepted as ref-
erence values and monitored.
If you wish to cancel the restart:
XPress the %button.
The tire pressure values stored at the last
restart will continue to be monitored.
Tire pressure289
Wheels and tires
Z

The following components of the different vehi-
cle versions influence fuel consumption:
Rtire sizes, tire tread, tire pressure, tire condi-
tion
Rtransmission ratios for the drive assemblies
Radditional equipment (e.g. air-conditioning
system, auxiliary heating system)
For these reasons, the actual consumption fig-
ures for your vehicle may deviate from the con-
sumption figures determined according to EU
Directive 80/1268/EE C.
Details on fuel consumption can be called up in
the on-board computer:
Ron vehicles without steering wheel buttons
(Ypage 174)
Ron vehicles with steering wheel buttons
(Ypage 181)
Engine oil
General notes
When handling engine oil, observe the important
safety notes on operating fluids (Ypage 306).
The quality of the engine oil used is of decisive
importance for the engine's functionality and
operating life. Mercedes-Benz continually
approves engine oils based on complex experi-
ments according to the current state of the art. Therefore, only Mercedes-Benz approved
engine oils may be used in Mercedes-Benz
engines. Mercedes-Benz recommends having
the oil changed at a qualified specialist work-
shop. Information about engine oils approved by
Mercedes-Benz can be obtained:
Rfrom any Mercedes-Benz Commercial Van
Center
Ron the Internet at
http://bevo.mercedes-benz.co
mbyenterin g
th edesignation ,e.g. 229.5.
Mercedes-Ben zapprova lis indicate don th eoil
container by th einscription „MB-Freigabe “or
„MB Approval“ and th ecorrespondin gdesigna-
tion ,e.g. MB-Freigabe or MB Approval 229.5.
Designation sof th eapprove dengin eoils for
your vehicl e
MB-Freigabe or MB
Approval229.5
Mercedes-Ben zrecommends that you only use
approve dmultigrade engin eoils of th eSA E
classe sSA E0W-30 and SA E0W-40 or
SA E5W-30 and SA E5W-40. These engin eoils
ensur eoptimum lubrication eve nat ver ylow
outside temperatures (
Ypage 310).
Whe ntoppin gup, we recommen dthat you only
use engin eoil of th esam egrade (MB-Freigabe
or MB Approval designation )and SA Eclass as
th eoil filled at th elast oil change.
iIf th eengin eoils listed in th etable are no t
available, you may add th efollowin gengin e
oils until th enext oil change:
RMB-Freigabe or MB Approval 229.1, or
ACE AA3
This mus tonly be added once and th eamount
mus tno tbe greate rthan 1qt (1. 0l).
Subsequentl yhav eth eengin eoil changed at
th eearliest possibl eopportunity.
!Using engin eoils of another grade qualit yis
no tpermitted.
Capacities
!Do no tadd to omuc hoil. addin gto omuc h
engin eoil can result in damage to th eengin e
or to th ecatalytic converter. Hav eexcess
engin eoil siphoned off .
Oil change includin goil filter
Engin eoilApprox. 2US gal
(7.75 l)
Service products and capacities309
Technical data
Z