2019 MERCEDES-BENZ METRIS air condition

Rthe maximum permissible gross vehicle
weight of both the towing vehicle and the
trailer
Rthe maximum permissible gross weight of
vehicle/trailer combination
The applicable permissible values that may not
be exceeded can be found:
Rin your vehicle documents
Ron the type plates for the trailer tow hitch
Ron the type plates for the trailer
Ron the vehicle identification plate
(Ypage 305)
Where the values differ, the lowest is valid.
You will find the values approved by the manu-
facturer on the vehicle identification plates and
those for the towing vehicle in the "Technical
data" section (
Ypage 316).
Your vehicle behaves differently with a trailer
than without one.
The vehicle/trailer combination:
Ris heavier
Ris restricted in its acceleration and gradient-
climbing capability
Rhas an increased braking distance
Ris more susceptible to strong crosswinds
Rrequires more sensitive steering
Rhas a larger turning circle
This may impair the handling characteristics.
When towing a trailer, always adjust your speed
to suit the road and weather conditions. Drive
carefully. Maintain a safe dista nce.
If y

ou require any further explanation regarding
the information contained in the Operating
Instructions, please contact a Mercedes-Benz
Commercial Van Center.
General notes
RObserve the legally permitted maximum
speed for vehicle/trailer combinations in the
relevant country, state or Canadian province.
Before beginning the journey, check the trail-
er's documents for the maximum permitted
speed of your trailer.
This reduces the risk of accidents.
RInstall only an approved trailer coupling on
your vehicle. Only use a ball coupling for your Metris trailer tow hitch if it has been approved
for your vehicle. More information on the
availability, mounting and installation of the trailer electrics is available at any qualified
specialist workshop.
RThe trailer coupling is one of the most impor-
tant vehicle parts with regard to road safety.
Observe the notes on operation, care and
maintenance of the trailer tow hitch (see the
manufacturer's operating instructions).
RThe bumpers of your vehicle are not suitable
for installing detachable trailer couplings.
RDo not attach rented trailer tow hitches or
other detachable trailer tow hitches to the
bumper.
RMinimize the risk of damage to the ball cou-
pling. If you do not require the ball coupling,
remove it from the ball coupling recess.
Yo u w
ill find weight information under "Techni-
cal data" (Ypage 316).
The height of the ball neck changes according to
the load on the vehicle. If this is case, use a
trailer with a height-adjustable trailer drawbar.
Driving tips
The maximum permissible speed for vehicle/
trailer combination depends on the type of
trailer. Before beginning the journey, check the
trailer's documents for the maximum permitted
speed of your trailer. Observe the legally per-
mitted maximum speed in the relevant country, state or Canadian province.
When towing a trailer, your vehicle's handling
characteristics will be different in comparison to
when driving without a trailer and it will con-
sume more fuel.
On long and steep downhill gradients, select a
lower gear.
iThis also applies if cruise control is activa-
ted.
This enables you to utilize the engine's braking
effect and you do not need to brake so heavily to keep the correct speed. This relieves the load on
the brake system and prevents the brakes from overheating and wearing too quickly. If you need
to brake additionally, to not depress the brake
pedal constantly, but periodically.
Observe the notes on ESP
®trailer stabilization
(Ypage 67).
166Towing a trailer
Driving an d parking

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 246).
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 or 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 t

he 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.
Uncoupling a trailer
GWARNING
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 rebounding of the overrun
brake.
XMake sure that the selector lever of the auto-
matic transmission is in position P.
XEngage the vehicle's parking brake.
XClose all doors.
XApply the parking brake of the trailer.
XIn addition, secure the trailer against rolling
away with a wheel chock or similar object.
XRemove the trailer cable and safety chains
and decouple the trailer.
168Towing a trailer
Driving and parking

Useful information
This Operator's Manual describes all models as
well as standard and optional equipment of your
vehicle that were available at the time of going
to print. Country-specific variations are possi-
ble. Note that your vehicle may not be equipped
with all of the described functions. This also
applies to systems and functions relevant to
safety.
Read the information on qualified specialist
workshops (
Ypage 31).
Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
GWARNING
If you are driving and reach through the steer- ing wheel to operate the adjustment knob,
you could lose control of the vehicle. There is
a risk of an accident and injury.
Only operate the adjustment knobs when thevehicle is stationary. Do not reach through the
steering wheel when driving.
You must observe the legal requirements for the
country in which you are currently driving when
operating the on-board computer.
GWARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The
operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
The on-board computer display only shows mes-
sages and warnings from certain systems. You
should therefore make sure your vehicle is oper-
ating safely at all times. If the operating safety of
your vehicle is impaired, stop the vehicle as
soon as possible, paying attention to road and
traffic conditions. Then consult a qualified spe-
cialist workshop.
The accuracy of the speedometer and odometer
displays is legally prescribed. Determining the
speed is dependent on the wheel size or the
rolling circumference of the wheels. If you
change the wheel size on your vehicle, make
sure it is assigned to the correct wheel size cat-
egory (
Ypage 279). If you change wheel size
category without recoding the control unit, the
speedometer indication will be inaccurate. Driv-
ing safety and driving systems may be impaired
or detect a malfunction and shut down.
An overview of the instrument cluster can be
found under "Instrument cluster":
Rfor vehicles without steering wheel buttons
(Ypage 37)
Rfor vehicles with steering wheel buttons
(Ypage 39)
Display and operation
Instrument lighting
Brightness control knob (example: vehicle with
steering wheel buttons)
In daylight, the displays in the instrument cluster
are illuminated. A dimming function is not pos-
sible in daylight.
Display and operation171
On-board computer and displays
Z

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

Display messages (vehicles withoutsteering wheel buttons)
Introduction
Important safet ynotes
GWARNING
If th einstrumen tcluster has failed or malfunctioned, you may no trecogniz efunction restriction s
in systems relevant to safety. The operatin gsafet yof your vehicle may be impaired. There is aris k
of an accident.
Drive on carefully. Hav eth evehicle checke dat aqualified specialis tworkshop immediately.
The on-boar dcompute ronly shows messages or warnings from certain systems in th einstrumen t
cluster display. You should therefore mak esur eyour vehicle is operatin gsafely at all times .If th e
operatin gsafet yof your vehicle is impaired, stop th evehicle as soo nas possible, payin gattention
to road and traffic conditions. The nconsult aqualified specialis tworkshop .
Display messages wit hgraphi csymbols are simplified in th eOperator's Manual and may diffe rfrom
th esymbols in th edisplay. Awarnin gtone sounds wit hcertain display messages.
Please respon din accordance wit hth edisplay messages and follow th eadditional note sin this
Operator's Manual.
You can hide low-priorit ydisplay messages usin gth e3 butto non th einstrumen tcluster. The
display messages are then stored in th emessag ememory. Rectify th
eca
use ofadisplay messag e
as soo nas possible.
High-priorit ydisplay messages canno tbe hidden .These messages will continue to be shown in th e
display until their cause has bee neliminated.
Message memory
The on-boar dcompute rstores certain display messages in th emessag ememory. You can cal lup
th estored display messages. Use th ebuttons in th einstrumen tcluster.
XPress Èto selec tth emessag ememory.
If there are display messages, th edisplay shows th enumber of saved messages.
If there are no display messages, th edisplay shows No Messages
.
XPress3to scroll forwards through th edisplay messages.
Afte rth elast saved display message, th edisplay again shows th emessag ememor ystart scree n
wit hth enumber of saved messages.
Press Èto exit th edisplay messages and jump directl yto th emessag ememor ystart screen.
Display messages (vehicles without steering wheelbu ttons)191
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Disabled
+
The front-passenger air bag is deactivated during th ejourney eve n
though th efront-passenger seat is occupied by an adult or aperson
wit h a statur ecorrespondin gto that of an adult .
If additional force sare applie dto th eseat or th eoccupant is no tsitting
on th eseat properly (
Ypage 53), theweigh tth esystem detects may
be to olow.
GWARNIN G
The front-passenger fron tair bag will no tdeploy in th eevent of an
accident.
There is an increased ris kof injury.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur eth evehicl eto preven tit from rollin gaway (Ypage 135).
XSwitchoff th eignition .
XThe fron tpassenger mus tget out of th evehicle.
XMak esur ethat th efront-passenger seat is unoccupied ,close th e
front-passenger door and switch on th eignition .
XObserveth ePASSENGER AIRBA GOF Findicator lamp in th ecenter
console and th edisplay message sand chec kth efollowing:
Seat unoccupied and ignition switched on :
RThe PASSENGER AIRBAGOF Findicator lamp mus tligh tup contin-
uously. If th eindicator lamp is on ,th eOccupant Classification Sys -
te m (OCS )has disabled th efro
nt-passenger air bag
(Ypage 53).
RThe display mus tno tsho wthemessage sFrontPassengerAir ‐bag Enable dorFront Passenger Airbag Disabled.
XWait for at least on eminute until th enecessar ysystem checks hav e
been completed.
XEnsur ethat th edisplay does no tsho weither of th etwo display
message sabout th efront-passenger fron tair bag.
If these condition sare met ,th efront-passenger seat can be occupied
again .
If these condition sare no tmet ,th eOccupant Classification Syste m
(OCS )is malfunctioning .
XVisitaqualified specialist workshop immediately.
Further information on th eOccupant Classification Syste m(OCS )can
be found under "Occupant Classification Syste m(OCS)" (
Ypage 53).
Display messages (vehicles without steering wheelbu ttons)193
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Enable d
+
The front-passenger fron tair bag is enabled during th ejourney eve n
though th efront-passenger seat :
Ris occupied byachild in achild restrain tsystem, or aperson of small
statur e
or
Ris no toccupied.
The system may detec tobjects or force sthat are addin gto th eweigh t
applie dto th eseat .
GWARNIN G
The front-passenger air bag may deploy unintentionally.
There is an increased ris kof injury.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur eth evehicl eto preven tit from rollin gaway (Ypage 135).
XSwitchoff th eignition .
XOpenth efront-passenger door .
XRemove thechild and th echild restrain tsystem from th efront-
passenger seat .
XMakesur ethere are no objects applyin gadditional weigh tto th e
seat .
The system may otherwise detec tth eadditional weigh tand inter-
pre tth evehicl eseat occupant's weigh tas greate rthan it actually is.
XMak esur ethat th efront-passenger seat is unoccupied ,close th e
front-passenger door and switch on th eignition .
XObserveth ePASSENGER AIRBA GOF Findicator lamp in th ecenter
console and th edisplay and chec kth efollowing:
Seat unoccu
pied and ignition switched on :
RThe PASSENGER AIRBAGOF Findicator lamp mus tligh tup contin-
uously. If th eindicator lamp is on ,th eOccupant Classification Sys -
te m (OCS )has disabled th efront-passenger air bag (
Ypage 53).
RThe display mus tno tsho wthemessage sFrontPassengerAir ‐bag Enable dorFront Passenger Airbag Disabled.
XWait for at least on eminute until th enecessar ysystem checks hav e
been completed.
XEnsur ethat th edisplay does no tsho weither of th etwo display
message sabout th efront-passenger fron tair bag.
If these condition sare met ,th efront-passenger seat can be occupied
again .Observ eth enote son th eOccupant Classification Syste m
(OCS ) (
Ypage 53) .
If these condition sare no tmet ,th eOccupant Classification Syste m
(OCS )is malfunctioning .
XInstall thechild restrain tsystem on asuitable rear seat .
or
XSeat aperson of small statur eon asuitable rear seat .
XVisitaqualified specialist workshop immediately.
194Display messages (vehicles without steering wheelbu ttons)
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Further information on theOccupant Classification Syste m(OCS )can
be found under "Occupant Classification Syste m(OCS)" (Ypage 53).
#
CheckBrakePadWear
The brak epads/linings hav ereached their wear limit.
XVisit aqualified specialist workshop .
$(USAonly)
J(Canada only)
Check Brake Fluid
Level
There is insufficien tbrak efluid in th ebrak efluid reservoir .
GWARNING
Braking performance can be impaired.
There is aris kof an accident.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions. Do no tcontinu edrivin gunder any circumstances.
XSecur eth evehicl eto preven tit from rollin gaway (Ypage 135).
XDo no tadd brak efluid. Addin gmor ewill no tremedy th emalfunc -
tion .
XConsult aqualified specialist workshop .
EBD,ABS ,ESP Inop‐erativ e
+
EBDis unavailable due to amalfunction .ABS, BAS, hill start assist and
ES P®as well as it sdrivin gsafet ysystems ,for example, are therefor e
also unavailable .
ATTENTION ASSIST is deactivated and other drivin gsystems could be
automatically deactivated.
GWARNIN G
The brak esystem continues to function normally, but without th e
function slisted above. The wheels could therefor eloc kprematurel yif
you brak ehard, for example.
This causes steerabilit yand braking to be greatl yimpaired. The brak -
ing distanc ecan increas ein emergenc ybraking situations.
If ES P
®is no toperational, ES P®will notstabiliz eth evehicle.
There is an increased ris kof skiddin gand accidents .
XSwitchth eengin eoff ,wait briefl yand start th eengin eagain .
XCheckif th edisplay message has disappeared and ES P®is opera-
tional.
XIf th edisplay message continues to be displayed:
RDrive on wit hcare.
RVisit aqualified specialist workshop immediately.
Display messages (vehicles without steering wheelbu ttons)195
On-board computer and displays
Z