2020 MERCEDES-BENZ METRIS child lock

Exterior mirrors
Adjusting manually X
Before starting off, manually adjust the exte-
rior mirrors in such a way that you can get a
good overview of road and traffic conditions.
Adjusting electrically X
Before pulling away, turn the key to position
1 or 2 in the ignition lock.
X Press the Z button for the left exterior
mirror or the \ button for the right exte-
rior mirror.
The indicator lamp for the button switches
on and the selected exterior mirror can be
adjusted.
The indicator lamp goes out again after
some time.
X If the indicator lamp for the Z or \
button lights up, press button 7 up or
down, to the right or left.
Adjust the exterior mirrors in such a way
that you have a good overview of traffic con-
ditions.
After the engine has been started, the exterior
mirrors are automatically heated if the rear
window defroster is switched on and the out-
side temperature is low.
Disengaged exterior mirrors If an exterior mirror has been pushed out of
position, proceed as follows:
X
Move the exterior mirror into the correct
position manually.
The mirror housing engages again and the
exterior mirrors can be adjusted again as
usual. Exterior mirror heating
i Vehicles without rear window
defroster: when the temperature is below
15 °C the mirror heating switches on auto-
matically after engine start and remains on.
i Vehicles with rear window heater: at
temperatures below
15 °C the mirror heater
switches on automatically for ten minutes
after engine start. In addition, mirror heating
can be switched on together with the rear
window defroster.
X To switch the mirror heating on man-
ually:
turn the key to position 2 in the igni-
tion lock.
X Press the ¤ button on the control panel.
If the indicator lamp in the ¤ button
lights up, both the mirror heating and the
rear window defroster are switched on.
The rear window defroster switches off auto-
matically after a few minutes. Memory function
General notes
With the memory function, you can store up to
three different seat settings, e.g. for three dif-
ferent people. The position of the seat, seat
backrest and head restraint are stored as a
single memory preset. Important safety notes
G
WARNING
If you use the memory function on the driv-
er's side while driving, you could lose con-
trol of the vehicle as a result of the adjust-
ments being made. There is a risk of an acci-
dent.
Only use the memory function on the driv-
er's side when the vehicle is stationary. G
WARNING
When the memory function adjusts the seat,
you and other vehicle occupants – particu-
larly children – could become trapped. There
is a risk of injury. Memory function
97
Seats, steering wheel and mirrors
Z

While the memory function is making adjust-
ments, make sure that no one has any body
parts in the sweep of the seat. If somebody
becomes trapped, immediately release the
memory function position button. The
adjustment process is stopped. G
WARNING
Children could become trapped if they acti-
vate the memory function, particularly when
unattended. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
Never leave children unsupervised in the
vehicle.
The memory function can be used at any time,
for example even when the key has been
removed from the ignition lock. Storing settings
X
Adjust the seat (Y page 88).
X Press the r memory button.
X Press one of the preset position buttons
4, 5 or = within three seconds.
The settings are stored in the selected pre-
set position and a tone sounds when the
settings have been completed. Calling up a stored setting
! If you want to move the seat from the fully
reclined position to a stored seat position,
first raise the backrest. The seat could oth-
erwise be damaged. X
Press and hold the relevant preset position
button 4, 5 or = until the seat is
in the stored position.
The seat adjustment procedure is interrup-
ted as soon as you release the preset posi-
tion button. 98
Memory function
Seats, steering wheel and mirrors

Gearshift recommendation
:
Gearshift direction
; Recommended gear The gearshift recommendations assist you in
adopting an economical driving style.
X When the display shows the gearshift rec-
ommendation, shift to recommended
gear ;. Problems with the transmission
Problem
Possible causes/consequences and
M SolutionsThe transmission is
locked in position j. The vehicle electronics are malfunctioning.
X Have the vehicle electronics checked immediately at a qualified
specialist workshop. The acceleration char-
acteristics have deterio-
rated noticeably.
The transmission does
not shift. The transmission is in emergency mode.
It is only possible to shift into second gear or reverse gear
R.
X Have the transmission checked immediately at a qualified spe-
cialist workshop.
X Stop the vehicle.
X Move the selector lever to j.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Depress the brake pedal.
X Move selector lever to h or k.
X Have the transmission checked immediately at a qualified spe-
cialist workshop. Refueling
Important safety notes
G
WARNING
Fuel is highly flammable. Improper handling
of fuel creates a risk of fire and explosion.
Avoid fire, open flames, smoking and creat-
ing sparks under all circumstances. Switch
off the engine and, if applicable, the auxiliary
heating before refueling. G
WARNING
Fuels are toxic and harmful to health. There
is a risk of injury.
You must avoid fuels coming into contact
with skin, eyes and clothes or being swal-
lowed.
Do not inhale the fuel vapors. Keep children
away from fuels.
Keep doors and windows closed during the
refueling process. 136
RefuelingDriving and parking

Problems with the fuel and fuel tank
If your vehicle is losing fuel, the fuel lines or
the fuel tank are defective. X Turn the key immediately to position 0 in
the ignition lock and remove it.
X Do not restart the engine under any circum-
stances.
X Consult a qualified specialist workshop. Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact
with hot parts of the exhaust system or
exhaust gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the
vehicle which are hot. Take particular care
not to park on dry grassland or harvested
grain fields. G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R release the parking brake.
R shift the automatic transmission out of
the parking position P.
R start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
Never leave children unsupervised in the
vehicle. G
WARNING
If you park the vehicle with the transmission
in park position j and the parking brake is
not engaged, the vehicle may roll away.
Engaging park position j is not a fully ade- quate replacement for the parking brake.
There is a risk of accident and injury.
Secure the vehicle against rolling away as
described below.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its
drivetrain could be damaged.
! When the vehicle is parked, always remove
the key to prevent the battery from becom-
ing discharged.
Always park your vehicle safely and secure it
against rolling away. When parking, observe
the legal requirements of the country in which
you are currently driving.
Observe the following to ensure that the vehi-
cle is secured correctly to prevent it from roll-
ing away unintentionally: R the parking brake is applied.
R the transmission is in position j and the
key has been removed.
R on uphill or downhill gradients, the front
wheels are turned towards the curb. Parking brake
G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R release the parking brake.
R shift the automatic transmission out of
the parking position P.
R start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
Never leave children unsupervised in the
vehicle. G
WARNING
If you must brake the vehicle with the park-
ing brake, the braking distance is considera-
bly longer and the wheels could lock. There 138
ParkingDriving and parking

Display messages
Possible causes/consequences and
M SolutionsIf these conditions are not met, the Occupant Classification System
(OCS) is malfunctioning.
X Install the child restraint system on a suitable rear seat.
or X Seat a person of smaller stature on a suitable rear seat.
X Visit a qualified specialist workshop immediately.
Further information on the Occupant Classification System (OCS)
can be found under "Occupant Classification System (OCS)"
(Y page
54). Check Brake Pad
Wear The brake pads/linings have reached their wear limit.
X Visit a qualified specialist workshop. $ (USA only)
J (Canada only)
Check Brake Fluid
Level There is insufficient brake fluid in the brake fluid reservoir.
G WARNING
Braking performance can be impaired.
There is a risk of an accident.
X Stop the vehicle immediately, paying attention to road and traffic
conditions. Do not continue driving under any circumstances.
X Secure the vehicle to prevent it from rolling away (Y page
138).
X Do not add brake fluid. Adding more will not remedy the malfunc-
tion.
X Consult a qualified specialist workshop immediately. T
ò÷
Inoperative See
Operator's Manual EBD is unavailable due to a malfunction. ABS, BAS, hill start assist
and ESP
®
as well as its driving safety systems, for example, are
therefore also unavailable.
ATTENTION ASSIST is deactivated and other driving systems could
be automatically deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock prematurely
if you brake hard, for example.
This causes steerability and braking to be greatly impaired. The
braking distance can increase in emergency braking situations.
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Drive on with care.
X Visit a qualified specialist workshop immediately. Display messages (vehicles with steering wheel buttons)
213
On-board computer and displays Z

Comply with instructions on the use, storage
and disposal of service products on the
labels of the respective original containers.
Always store service products sealed in their
original containers. Always keep service
products out of the reach of children. 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.
Coolant contains glycol and is therefore poi-
sonous. Also observe the safety notes under
"Service products and capacities"
(Y page
305). G
WARNING
The cooling system is pressurized, particu-
larly when the motor is warm. If you open
the cap, you could be scalded if hot coolant
sprays out. There is a risk of injury.
Let the engine cool down before you open
the cap. Wear protective gloves and protec-
tive eyewear when opening. Open the cap
slowly to release pressure.
Only check the coolant level and/or fill the
coolant if the vehicle is on a level surface and
the engine has cooled down. The coolant tem-
perature must be below

122 ‡ (50 †). The
coolant temperature gauge must no longer reach the first line after the letter
C on the
scale and/or the bar display.
! Check the engine cooling and heating sys-
tem regularly for leaks.
If a large quantity of coolant is lost, have the
cause traced and rectified at a qualified spe-
cialist workshop. G
WARNING
If antifreeze comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Let the engine cool down before you add
antifreeze. Make sure that antifreeze is not
spilled next to the filler neck. Thoroughly
clean the antifreeze from components
before starting the engine.
! Take care not to spill any coolant on pain-
ted surfaces. You could otherwise damage
the paintwork. Example: cap and coolant expansion tank
Checking the coolant level
X Stop your vehicle as far away from traffic as
possible on level ground.
X Switch off the engine.
X Secure the vehicle to prevent it from rolling
away.
X Open the hood (Y page
251).
X Allow the engine to cool down.
X Unscrew cap : slowly about half a turn
counter-clockwise and allow excess pres-
sure to escape. 254
Engine compartment
Maintenance and care

X
Turn cap : further and remove it from cool-
ant expansion tank ;.
X Check the coolant level.
If the coolant is up to marker bar =
in the
filler neck when cold, there is a sufficient
amount of coolant in coolant expansion
tank ;.
If the coolant is approximately 0.59 in
(1.5 cm) above marker bar = in the filler
neck when warm, there is a sufficient
amount of coolant in coolant expansion
tank ;.
Adding coolant X If the coolant drops under marker bar = in
the filler neck, add coolant.
Observe the information on the correct cool-
ant mixture ratio and the required water
quality under "Service products and capaci-
ties" ( Y page

310). To prevent damage to
the engine cooling system, use only
approved corrosion inhibitor/antifreeze that
complies with the Mercedes-Benz Specifica-
tions for Service Products.
X Replace cap : and tighten in a clockwise
direction.
X Start the engine.
X Set the temperature in the vehicle interior to
the maximum output on the air-conditioning
system control panel.
X After approximately five minutes, switch off
the engine again and allow it to cool down.
X Check the coolant level again and add cool-
ant if necessary.
X Close the hood. Brake fluid
G
WARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the
labels of the respective original containers.
Always store service products sealed in their
original containers. Always keep service
products out of the reach of children. 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.
Brake fluid is hazardous to health. Also
observe the safety notes under "Service prod-
ucts and capacities"
(Y page 305). G
WARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the
brake fluid is too low, vapor pockets may
form in the brake system when the brakes
are applied hard. This would impair braking
efficiency. There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
! If the brake fluid level in the brake fluid
reservoir has fallen to the MIN mark or
below, check the brake system immediately
for leaks. Also check the thickness of the
brake linings. Visit a qualified specialist
workshop immediately.
Do not add brake fluid. This does not cor-
rect the malfunction.
! Brake fluid corrodes paint, plastic and rub-
ber. If paint, plastic or rubber has come into
contact with brake fluid, rinse with water
immediately. Engine compartment
255
Maintenance and care Z

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