warning light MERCEDES-BENZ METRIS 2020 MY20 Operator’s Manual

Cup holders in the dashboard
Cup holder in the dashboard (example: left side
of vehicle)
Cup holders
: are located on the left and the
right on top of the dashboard and on the cen-
ter console. Bottle holder
The bottle holders are in front of the stowage
compartments in the front doors.
There are additional bottle holders on the left
and right in the rear compartment side panel-
ing. Observe the safety notes
(Y page 238). Ashtray
Front ashtray
Ashtray
Ashtray with lid : can be inserted into a cup
holder on the dashboard or into a cup holder
in the rear compartment. Cigarette lighter
Important safety notes
G
WARNING
You can burn yourself if you touch the hot
heating element or the socket of the ciga-
rette lighter.
In addition, flammable materials can ignite
if:
R the hot cigarette lighter falls
R a child holds the hot cigarette lighter to
objects, for example
There is a risk of fire and injury.
Always hold the cigarette lighter by the
knob. Always make sure that the cigarette
lighter is out of reach of children. Never
leave children unsupervised in the vehicle.
Above all, pay attention to traffic conditions.
You could otherwise cause an accident and
injure yourself and others. Only operate the
cigarette lighter if traffic conditions permit. 240
Cigarette lighter
Stowing and features

Cigarette lighter in the front com-
partment
X
To use the cigarette lighter: turn the key
to position 1 in the ignition lock
(Y page
127).
X Press in cigarette lighter :.
The cigarette lighter will pop out automati-
cally when the heating element is red-hot.
X Pull the cigarette lighter out of the socket by
its handle.
The cigarette lighter socket can be used for
accessories with a maximum power consump-
tion of 180 W

(15 A).
If you use the sockets to connect accessories
for long periods when the engine is switched
off, the starter battery may discharge. An
emergency cut-off ensures that the on-board
voltage does not drop too low. If the on-board
voltage is too low, power to the socket is auto-
matically cut. This ensures that there is suffi-
cient power to start the engine. 12 V socket
When the key is turned to position 1 in the
ignition lock, the sockets can be used for accessories with a maximum power consump-
tion of

180 W (15 A).
If you use the sockets for long periods when
the engine is switched off, the starter battery
may discharge. If the on-board voltage is too
low, it might then no longer be possible to
start the engine.
The socket in the center console and the
socket in the side of the cargo compartment
are not automatically deactivated if the on-
board voltage is low. The additional sockets in
the rear compartment are automatically deac-
tivated if the on-board voltage is low.
Additional 12 V sockets may be located in the
rear corner trim next to the tailgate and in the
side trim on the left and right-hand sides.
X Lift up the cover of socket :. Mobile communications equipment
G
WARNING
If you operate information and communica-
tion devices while driving, you may be dis-
tracted from the traffic conditions. You
could even lose control of the vehicle. There
is a risk of an accident.
Only operate these devices when the vehicle
is stationary.
Observe the legal requirements for the country
in which you are currently driving when operat-
ing mobile communication equipment.
Please remember, a navigation system does
not supply information on the load-bearing
capacity of bridges or the overhead clearance
of underpasses. The driver remains responsi-
ble for safety at all times.
You and others can suffer health-related dam-
age through electromagnetic radiation. By
using an exterior antenna, a possible health
risk caused by electromagnetic fields, as dis-
cussed in scientific circles, is taken into
account. Only have the exterior antenna instal-
led by a qualified specialist workshop.
Failure to observe the Mercedes-Benz installa-
tion specifications can result in the invalida-
tion of your vehicle's operating permit.
You will find information on retrofitting electri-
cal or electronic equipment under “Vehicle
electronics” (Y page

304). Mobile communications equipment
241
Stowing and features Z

Lashing straps
Important safety notes
G
WARNING
If you attach the tie-down incorrectly when
securing the load, the following may occur in
the event of abrupt changes in direction,
braking maneuvers or an accident:
R the cargo tie-down rings may become
detached or the tie-down may tear if the
permissible load is exceeded
R the load may not be restrained.
This may cause the load to slip, tip over or
be tossed about, striking vehicle occupants.
There is a risk of an accident and injury.
Always tension the tie-downs in the proper
manner and only between the described
cargo tie-down rings. Always use tie-downs
designed specifically for the loads.
! Observe the information on the maximum
loading capacity of the individual cargo tie-
down points.
If you use several cargo tie-down points to
secure a load, you must always take the
maximum loading capacity of the weakest
cargo tie-down point into account.
If you brake hard, for example, the forces
acting could be up to several times the
weight force of the load. Always use multi-
ple cargo tie-down points in order to distrib-
ute the force absorption. Load the ancho-
rages evenly.
Always observe the operating instructions or
the notes of the lashing strap manufacturer for
the operation of the lashing strap.
Securing loads on the cargo compartment
floor by lashing them down is only recommen-
ded for lightweight loads. Place non-slip mats
(anti-slip mats) under the load to increase load
security. Notes and information on:
R the operation of the cargo tie-down rings
and cargo tie-down points can be found in
the "Securing a load" section
(Y page 244)
R the maximum loading capacity of the cargo
tie-down points can be found in the "Techni-
cal data" section ( Y page 313)
R the maximum loading capacity of the lashing
strap can be found on the lashing strap label
If the label is missing or illegible, the lashing
strap is ready to be discarded. Such a lash-
ing strap must be removed from use. If stickers have been included in the delivery:
X Clean the surface before sticker : is
affixed.
The stickers must be affixed to a flat, metal-
lic surface free from grease and dust.
X Affix stickers : on every side of the vehicle
in close proximity to the loading rails in a
clearly visible location. 246
Lashing straps
Transporting loads

X
Guide ratchet strap ? through slotted shaft
A from behind as illustrated and tighten it.
X Swing tensioning lever ; back and forth
until the ratchet strap has wound around
slotted shaft A two to three times.
X Press stop slider = outwards in the direc-
tion of the arrow and swing tensioning
lever ; to detent position 1.
X Release stop slider =.
The ratchet is closed and engaged. Tensioning lever in the release position
X To release the ratchet strap: release ten-
sioning lever ; and swing it into release
position 7.
Lock stop slider = engages in end recess
B.
X Unlock the release catch D by pressing it.
Slotted shaft A can move freely.
X Pull ratchet strap ? out of the ratchet. Securing loads
Load protection net
G
WARNING
The load protection net alone cannot
restrain or secure heavy objects, luggage or
heavy loads. In the event of abrupt changes
in direction, braking maneuvers or an acci-
dent, you may be struck by unsecured loads.
There is a risk of injury, possibly even fatal.
Always stow objects in such a way that they
cannot be tossed about. Secure objects, lug-
gage and loads to prevent them slipping or
tipping over, e.g. by lashing them down,
even when using the load protection net. G
WARNING
If vehicle occupants are seated behind a
load protection net, they may be squeezed
up against the load protection net. There is
a risk of injury, particularly in the event of
braking maneuvers or abrupt changes in
direction.
Never allow vehicle occupants to sit behind
the load protection net.
The load protection net borders the cargo
compartment. It protects vehicle occupants
from light objects and/or luggage slipping or
tipping over. Always observe the notes on
securing loads
(Y page 244).
You can install the load protection net at an
angle behind the front seats or behind the first
row of back seats. Upper retainer
Anchorage (example: fixed cargo tie-down ring)248
Securing loads
Transporting loads

X
Hold support strut ? and lift the hood
slightly.
X Guide support strut ? towards retainer =
and apply slight pressure to make it engage.
X Lower the hood and allow it to fall with
momentum from a height of approximately
1 ft (30 cm
).
The hood locks audibly.
X Check that the hood is correctly locked.
If the hood can be raised slightly, it is not
properly engaged. If the hood is not cor-
rectly engaged, open the hood again. Let
the hood fall with a little more momentum. Overview of the engine compart-
ment
Engine compartment (example)
:
Engine oil filler neck cap (Y page
252)
; Brake fluid reservoir cap (Y page
255)
= Coolant expansion tank cap ( Y page
253)
? Washer fluid reservoir cap (Y page
256)
Regularly check the fluid level and the assem-
bly for leaks. If you detect fluid loss, e.g. oil
stains on the vehicle parking space, consult a
qualified specialist workshop immediately. Engine oil
General notes !
Engine oil gets dirty in the course of opera-
tion and its quality and volume are gradually
diminished. Regularly check the oil level,
and top up or have it replaced as needed.
Observe the information on approved engine
oils and oil consumption under "Service prod-
ucts and capacities" ( Y page

308).You can check the oil level in the engine:
R with the oil dipstick
Checking the oil level using the oil dip-
stick 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. G
WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very
hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down
and touch only the components described in
the following. Oil dipstick and engine oil filler neck
Only check the oil level when the engine is at
normal operating temperature. X Stop your vehicle as far away from traffic as
possible on level ground.
X Secure the vehicle to prevent it from rolling
away.
X Switch off the engine.
X Wait for five minutes.252
Engine compartment
Maintenance and care

The prescribed service interval is based on
normal vehicle use. Service work will need to
be performed more frequently than prescribed
if the vehicle is operated under more arduous
conditions or with higher loads. Such arduous
conditions include:
R regular city driving with frequent intermedi-
ate stops
R driving predominantly short distances
R frequent operation in mountainous terrain or
on poor road surfaces
R leaving 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 exam-
ple, replaced more frequently. Under more
arduous operating conditions, the tires must
be checked more often. Further information
can be obtained at a qualified specialist work-
shop, e.g. an authorized Mercedes-Benz Com-
mercial Van Center.
Hiding service messages Vehicles without steering wheel buttons
X Press the 3 button on the instrument clus-
ter.
Vehicles with steering wheel buttons
X Press the a or % button on the steer-
ing wheel.
Calling up the service due date Vehicles without steering wheel buttons
The vehicle must be stationary. Use the but-
tons in the instrument cluster.
X Turn the key to position 2 in the ignition
lock.
X Press È to select the service display.
The display shows a possible service mes-
sage.
Vehicles with steering wheel buttons
Using the steering wheel buttons
X Turn the key to position 2 in the ignition
lock.
X Press = or ; to select the Service
menu.
X Press 9 or : to select the ASSYST
PLUS submenu and press a to confirm.
The display shows the service due date. Battery
Important safety notes
Work on the battery, e.g. removing or instal-
ling, requires specialist knowledge and the use
of special tools. Therefore, always have work
on the battery carried out at a qualified spe-
cialist workshop. G
WARNING
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
system, the ABS (anti-lock braking system)
or the ESP ®
(Electronic Stability Program).
The operating safety of your vehicle may be
restricted.
You could lose control of the vehicle, for
example:
R when braking
R in 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
incident, contact a qualified specialist work-
shop immediately. Do not drive any further.
You should have all work involving the bat-
tery carried out at a qualified specialist
workshop.
Further information can be found under "ABS"
(Y page
67) and under "ESP ®
" (Y page 68). G
WARNING
Electrostatic build-up can lead to the crea-
tion of sparks, which could ignite the highly
explosive gases of a battery. There is a risk
of an explosion.
Before handling the battery, touch the vehi-
cle 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. 258
Battery
Maintenance and care

Disconnecting and removing
G
WARNING
During the charging process, a battery pro-
duces hydrogen gas. If a short circuit occurs
or sparks are created, the hydrogen gas can
ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
R Never place metal objects or tools on a
battery.
R It is important that you observe the
described order of the battery terminals
when connecting and disconnecting a bat-
tery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected.
R It is particularly important to observe the
described order when connecting and dis-
connecting the jumper cables.
R Never connect or disconnect the battery
terminals while the engine is running. G
WARNING
Battery acid is caustic. There is a risk of
injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash away battery acid immedi-
ately with plenty of clean water and seek
medical attention.
! You should have all work involving the bat-
tery carried out at a qualified specialist
workshop.
If, in exceptional circumstances, you need
to disconnect the battery yourself, please
make sure that:
R Secure the vehicle to prevent it from roll-
ing away.
R You have switched off the engine and
removed the key. Make sure the ignition
is switched off. Check to see that there
are no indicator lamps lighting in the instrument cluster. Electronic compo-
nents such as the alternator may other-
wise be damaged.
R After the battery has been disconnected,
the parking brake is automatically
engaged. You can then no longer move
the vehicle.
R For vehicles with automatic transmission,
the transmission is locked in position P
after disconnecting the battery. You can
then no longer move the vehicle.
R You have first removed the negative ter-
minal and then the positive terminal.
Never mix up the terminal clamp discon-
nection/connection order and never mix
up the terminal clamps. The vehicle's
electronics may otherwise be damaged.
The battery and the cover of the positive ter-
minal clamp must be installed securely dur-
ing operation. Seat base (example: right-hand front seat)
The following description on disconnecting
and removing the battery is based upon the
example of the starter battery in the seat base
of the driver's seat. The additional battery is
disconnected and removed in the same way as
the starter battery. The auxiliary battery is
located in the seat base of the left-hand front
seat.
X Switch off all electrical consumers.
X Switch off the engine and remove the key
from the ignition lock.
X Open the front door on the right-hand side.
i To disconnect or remove the additional
battery, open the left-hand front door. The
auxiliary battery is located in the seat base
of the left-hand front seat. 260
BatteryMaintenance and care

tery is located in the seat base of the left-hand
front seat.
Example: starter battery
X Place the battery on the door sill panel as
shown and secure with handles = if neces-
sary.
X Connect positive clamp ; to positive termi-
nal :. Always observe the positive terminal
installation position shown when doing so.
The positive lead must be routed parallel to
the side of the battery housing in the con-
nection area.
X Place the positive clamp cover on positive
terminal :.
X Fold both handles = down onto the battery.
X Push the battery into the seat base until the
negative terminal can be connected.
X Connect the negative clamp to negative ter-
minal ?.
X Push the battery into the seat base as far as
it will go. Open seat base with installed battery (example:
right-hand front seat) X
Push vent hose A onto the battery connec-
tion next to the negative pole ? at the top.
X Guide holder C over the lower side of the
battery housing and the threads for screws
B.
X Screw on holder C with screws B.
The battery is secured to prevent slipping. Seat base (example: right-hand front seat)
X Insert cover E down in front of the battery
compartment into the seat base and close
it.
Latching springs D of cover E should
engage audibly.
Carry out the following work after connecting
the battery:
X Reset the side window (Y page 86).
X Reset the electric sliding doors ( Y page
80). Charging
G
WARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery,
gases can escape from the battery. There is
a risk of an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
If the indicator/warning lamps do not light up
in the instrument cluster when temperatures
are low, it is probably because the discharged
battery has frozen. Should this be the case, do
not jump-start the vehicle or charge the bat-
tery. The service life of a thawed battery may
be shorter. Start-up behavior may deteriorate,
in particular at low temperatures. Have the 262
Battery
Maintenance and care

thawed battery checked at a qualified special-
ist workshop.
G
WARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is
a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is suffi-
cient ventilation while charging and jump-
starting. Do not lean over a battery. G
WARNING
Battery acid is caustic. There is a risk of
injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash away battery acid immedi-
ately with plenty of clean water and seek
medical attention.
! Charge the installed battery only with a
charger approved for Mercedes-Benz. This
device allows the battery to be charged
while it is installed in the vehicle. The vehi-
cle's electronics system may otherwise be
damaged.
! Only charge the battery using the jump-
starting connection point.
A battery charger unit specially adapted for
Mercedes-Benz vehicles and tested and
approved by Mercedes-Benz is available as an
accessory. Only this device permits the charg-
ing of the battery in its installed position. Con-
tact an authorized Mercedes-Benz Commercial
Van Center for information and availability.
Read the operating instructions for your
charger before charging the battery.
Recharge the battery more frequently if you
use the vehicle mainly for short trips and/or
drive at low outside temperatures.
Only charge the installed battery with a battery
charger that has been tested and approved by
Mercedes-Benz, using the jump-start connec-
tion point in the engine compartment.
X Connect the battery charger to the positive
terminal and ground terminal in the same
order as when connecting the donor battery in the jump-starting procedure
(Y page
272).
i If a battery is not installed and not in ser-
vice, you should charge it every three
months. This will counter self-discharging
and prevent battery damage. Care
12 V battery !
Dirty battery clamps and battery surfaces
cause leak currents which lead to the bat-
teries discharging.
! Do not use cleaning agents containing
fuel. Cleaning agents containing fuel cor-
rode the battery housing.
! If dirt gets into the battery cell, battery
self-discharge will increase and the battery
may be damaged.
The following points on battery care must be
observed:
X Regularly check the battery terminals and
the fastening of the negative cable to the
chassis to ensure that they are firmly
seated.
X Always keep the battery terminals and bat-
tery surfaces clean and dry.
X Lightly grease the undersides of the battery
terminals with acid-resistant grease.
X Only clean the battery casing with a com-
mercially available cleaning product. Care
Notes on care
G
WARNING
If you use openings in the bodywork or
detachable parts as steps, you could:
R slip and/or fall
R damage the vehicle and cause yourself to
fall.
There is a risk of injury.
Always use secure climbing aids, e.g. a suit-
able ladder. Care
263
Maintenance and care Z

!
Do not use the lower sliding door guide
(carriage) as a step. Otherwise, you could
damage the paneling and/or the sliding
door mechanism.
! When cleaning your car, do not use:
R dry, coarse or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces and films with
hard objects, e.g. rings or ice scrapers. Oth-
erwise, you may scratch or damage the sur-
faces and films.
! Do not park your vehicle for a long period
of time directly after cleaning, particularly
after cleaning the wheel rim with wheel
cleaner. Wheel cleaner can lead to the
increased corrosion of the brake discs and
pads. Therefore, drive for a few minutes
after cleaning. By heating up the brakes, the
brake discs and pads dry. The vehicle can
then be parked for a long period of time. H
Environmental note
Only clean your vehicle at specially designed
wash bays. Dispose of empty containers and
used cleaning products in an environmen-
tally responsible manner. H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible
manner.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents recom-
mended and approved by Mercedes-Benz. Washing the vehicle and cleaning
the paintwork
Automatic car wash G
WARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident. After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is
restored.
! Make sure that the automatic car wash is
suitable for the size of the vehicle.
Before washing the vehicle in an automatic
car wash, fold in the exterior mirrors and
remove any additional antennas. Otherwise,
the exterior mirror, antenna or the vehicle
itself could be damaged.
Make sure that the exterior mirrors are fully
folded out again and that any additional
antennas are re-installed when you leave the
automatic car wash.
! Make sure that:
R the side windows and roof are completely
closed
R the climate control blower is switched off
R the windshield wiper switch is in position
0
The vehicle may otherwise be damaged.
You can wash the vehicle in an automatic car
wash from the very start.
Wash off excess dirt before cleaning the vehi-
cle in an automatic car wash.
After putting the vehicle through an automatic
car wash, wipe off wax from:
R the windshield
R the windshield wiper blades
This will prevent smears and reduce wiping
noises caused by residue on the windshield.
R on vehicles with rear-end doors, from the
rear view camera lens in the top of the
license plate molding
(Y page 267)
Washing by hand In some countries, washing by hand is only
allowed at specially equipped washing bays.
Observe the legal requirements of the country
you are currently in when washing by hand.
X Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use a soft car sponge.
X Use a mild cleaning agent, e.g. a Mercedes-
Benz approved car shampoo.264
Care
Maintenance and care