2020 MERCEDES-BENZ METRIS key

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

is an increased danger of skidding and acci-
dents.
Only use the parking brake to brake the
vehicle when the service brake is faulty. Do
not apply the parking brake too firmly. If the
wheels lock, release the parking brake until
the wheels begin turning again. The brake lamps are not illuminated when you
brake the vehicle using the parking brake.
As a rule, you may only apply the parking
brake when the vehicle is stationary.
X To apply the parking brake: depress park-
ing brake pedal ; firmly.
The red F (only USA) or J (only Can-
ada) indicator lamp in the instrument cluster
lights up if the engine is running.
X To release the parking brake: depress the
brake pedal and keep it depressed.
X Pull release handle :.
The parking brake is released abruptly. The
red F (only USA) or J (only Canada)
indicator lamp in the instrument cluster
goes out.
Exceptionally, if the service brake fails, the
parking brake can be used to brake the vehicle
in an emergency.
X Emergency braking: pull release handle :
and gradually depress parking brake
pedal ;. Switching off the engine
Important safety notes G
WARNING
The automatic transmission switches to neu-
tral position N when you switch off the
engine. The vehicle may roll away. There is a
risk of an accident.
After switching off the engine, always switch
to parking position P. Prevent the parked
vehicle from rolling away by applying the
parking brake.
! If the coolant temperature is very high, e.g.
after driving on hilly roads, leave the engine
running at idle speed for about
two minutes
before turning it off.
This allows the coolant temperature to
return to normal.
Vehicles with automatic transmission X
Stop the vehicle.
X Shift the transmission to position j.
X Apply the parking brake.
X Turn the key to position u in the ignition
lock and remove it.
The immobilizer is activated.
If you switch the engine off with the trans-
mission in position k or h, the automatic
transmission shifts to i automatically.
If you then open one of the front doors or
remove the key, the automatic transmission
automatically shifts to j.
If you shift the automatic transmission to
i before switching off the engine, the
automatic transmission remains in i even
if a front door is opened.
X Secure the vehicle to prevent it from rolling
away

(Y page 138). Parking
139
Driving and parking Z

Warning display
Blind Spot Assist is not active at speeds below
approximately
20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
approximately 20 mph (30 km/h), warning
lamp : lights up red in the exterior mirror on
the corresponding side. Warning lamp :
always lights up when a vehicle enters the
blind spot monitoring range from behind or
from the side. When you overtake a vehicle,
the warning only occurs if the difference in
speed is less than 7 mph (11 km/h).
If you select reverse gear, Blind Spot Assist is
inactive.
The intensity of warning lamps : depends on
the brightness of the ambient light and is con-
trolled automatically.
Collision warning If a vehicle is detected in the monitoring range
of Blind Spot Assist and you switch on the cor-
responding turn signal, a double warning tone
sounds once. The warning lamp in the corre-
sponding exterior mirror flashes. If the turn
signal remains on, detected vehicles are indi-
cated by the flashing of the warning lamp in
the exterior mirror. There are no further warn-
ing tones.
Activating Blind Spot Assist X
Make sure that Blind Spot Assist is activa-
ted in the on-board computer (Y page

191).
X Turn the key to position 2 in the ignition
lock.
The warning lamps in the exterior mirrors
light up for approximately

1.5 seconds. Status indicators in the status overview submenu
If Blind Spot Assist is activated, the display
shows symbol : in the Status Overview
submenu of the on-board computer
(Y page

189). If you are driving faster than
20 mph (30 km/h), the symbol also shows
radar waves ; between the two vehicles.
Blind Spot Assist is then ready for use.
Towing a trailer If you attach a trailer, make sure that you have
correctly established the electrical connection.
This can be accomplished by checking the
trailer lighting. Blind Spot Assist is then deacti-
vated and the Blind Spot Assist Cur‐
rently Unavail. See Operator's Manual
message appears in the display. Lane Keeping Assist
General notes Lane Keeping Assist monitors the area in front
of your vehicle by means of camera : which
is mounted at the top of the windshield. Lane
Keeping Assist detects lane markings on the
road and can warn you before you leave your
lane unintentionally.
This function is available in the range between
40 mph (60 km/h

) and 125 mph (200 km/h).
A warning may be given if a front wheel
touches a lane marking. It will warn you by Driving systems
153
Driving and parking Z

For vehicles with steering wheel buttons you
can have the current ATTENTION ASSIST
(Attention Level) assessment displayed.
X Select Status Overview in the Assist.
menu and display the attention level
(Y page
189).
The following information is displayed: R the length of the journey since the last
break.
R the attention level determined by ATTEN-
TION ASSIST, displayed in a bar display in
five levels from low to high.
R if ATTENTION ASSIST is unable to calculate
the attention level and cannot output a
warning, the System Passive message
appears in the display. The bar display is
then dimmed. This is the case, for example,
if you are predominantly driving at a speed
below

40 mph (60 km/h) or above 125 mph
(200 km/h).
Activating ATTENTION ASSIST X
Activating ATTENTION ASSIST with the on-
board computer:
R on vehicles without steering wheel but-
tons

(Y page 180)
R on vehicles with steering wheel buttons
(Y page 190)
For vehicles with steering wheel buttons,
the system determines the attention level of
the driver depending on the setting selec-
ted:
Standard: the sensitivity with which the
system determines the attention level is set
to normal.
Sensitive: the sensitivity is set higher. The
driver is warned earlier.
When ATTENTION ASSIST is switched on and
the vehicle engine is running: R on vehicles without steering wheel buttons,
the À indicator lamp in the instrument
cluster lights up
R on vehicles with steering-wheel buttons, the
display shows the À symbol:
- in the status area
- in the Status Overview of the Assist.
menu (Y page

189)
For vehicles with steering wheel buttons, if you
deactivate ATTENTION ASSIST, the system is
automatically re-activated when you start the engine. The system sensitivity then corre-
sponds to the last selection activated – stand-
ard or sensitive.
If you switch off ATTENTION ASSIST in a vehi-
cle without steering wheel buttons, the system
remains switched off even after you start the
engine. The status of the system after switch-
ing on the engine always corresponds to the
status last selected.
Warning in the display If the system detects tiredness or increasing
lapses in concentration, the warning
Atten‐
tion Assist: Take a Break! or Attent.
Asst: Take Break!is shown in the display.
An additional warning tone sounds.
X If necessary, take a break.
X Confirm the message by pressing the a
button on the steering wheel.
On long journeys, take regular breaks in good
time to allow yourself to rest. If you do not
take a break and ATTENTION ASSIST contin-
ues to detect increasing lapses in concentra-
tion, you will be warned again after

15 minutes
at the earliest. This will only happen if ATTEN-
TION ASSIST still detects typical indicators of
fatigue or increasing lapses in concentration. PARKTRONIC
General notes PARKTRONIC is an electronic parking aid. The
system is equipped with ultrasonic sensors in
the front and rear bumpers to monitor the area
around your vehicle. PARKTRONIC indicates
visually and audibly the distance between your
vehicle and an object.
Your vehicle features two separate sound
emitters with different frequencies for the
warning tones. The warning ranges in front of
and behind the vehicle are indicated by differ-
ent warning tones.
PARKTRONIC is activated automatically when
you:
R turn the key to position 2 in the ignition lock
R release the parking brake and
R move the selector lever to position D, N or R156
Driving systems
Driving and parking

Towing a trailer
PARKTRONIC detects a coupled trailer if your
vehicle is equipped with the corresponding
electrical installations for trailer towing.
PARKTRONIC is deactivated for the rear area
when you establish an electrical connection
between your vehicle and a trailer. If you use
an adapter for the socket, remove it from the
socket after detaching the trailer. Otherwise,
PARKTRONIC remains deactivated for the rear
area.
Problems with PARKTRONIC Problem
Possible causes/consequences and
M SolutionsOnly the red segments
in the PARKTRONIC
warning displays are lit.
In addition, a warning
tone sounds for approx.
two seconds
PARKTRONIC is then
deactivated.
The indicator lamp of
the f button lights
up and the red seg-
ments in the
PARKTRONIC warning
display go out. PARKTRONIC has malfunctioned and has switched itself off.
X
If problems persist, have PARKTRONIC checked at a qualified
specialist workshop. The PARKTRONIC warn-
ing displays implausible
distances.
For example, all the
segments may be lit
even though there is no
obstacle present. The PARKTRONIC sensors are dirty or iced up.
X Clean the PARKTRONIC sensors ( Y page 267).
X Turn the key to position 2 in the ignition lock. The license plate or other parts attached near the sensors may not
be secured correctly.
X Check the license plate and attachment parts near the sensors
for correct seating. An external radio or ultrasonic source may be causing interference.
X Check PARKTRONIC functions in a different location. Active Parking Assist
General notes Active Parking Assist is an electronic parking
aid. The system uses ultrasound sensors to
measure the road on both sides of the vehicle
and indicates suitable parking spaces. It can
then actively steer and brake the vehicle to
help you to park and exit the parking space.
Active Parking Assist includes the
PARKTRONIC parking aid which indicates visu-
ally and audibly the distance between your vehicle and an obstruction. To do this,
PARKTRONIC uses the ultrasonic sensors of
the Active Parking Assist

(Y page 156).
Important safety notes Active Parking Assist is only an aid. It is not a
substitute for your attention to the immediate
surroundings. You are responsible for safe
maneuvering, parking and pulling away. Make
sure that no persons, animals or objects are in
the maneuvering range. Driving systems
159
Driving and parking Z

Switching the rear view camera on or
off
X
To activate: make sure that the key is in
position 2 in the ignition lock.
X Shift the transmission to position k.
On vehicles with a tailgate, the rear view
camera flap opens. The audio display shows
the area behind the vehicle. The rear area
shown is divided by guide lines.
In vehicles with a trailer coupling installed, the
function mode of the rear view camera can be
switched over when the trailer is reached. The
rear view camera then changes the viewing
angle and shows a locating aid for the ball cou-
pling of the trailer tow hitch to help reach the
drawbar.
X To switch function mode: select and con-
firm "Reverse parking" function : or "Cou-
pling up a trailer“ function ; using the
audio system control knob.
Information on the audio system control
knob can be found in the separate operating
instructions.
The symbol of the selected function is high-
lighted.
X To switch off: shift the transmission to
position i or h.
The dynamic guide lines are hidden and
after about 15 seconds the rear view cam-
era switches itself off.
or X Drive forwards more than about 30 ft
(10 m).
or X Drive forwards faster than 6 mph
(10 km/h
).
or X Shift the automatic transmission to position
j. In vehicles with Active Parking Assist, the rear
view camera remains switched on after the ini-
tial shift to reverse gear for the whole duration
of active parking assistance. You can find
information on active parking assistance under
"Active Parking Assist“

(Y page 159).
Messages in the multimedia system
display :
Yellow guide line at a distance of approx-
imately
13 ft (4.0 m) from the rear of the
vehicle
; White guide line without turning the steer-
ing wheel, vehicle width including the exte-
rior mirrors (static)
= Yellow guide line for the vehicle width
including the exterior mirrors, at the cur-
rent steering angle (dynamic)
? Yellow lane marking the course the tires
will take at the current steering angle
(dynamic) A
Yellow guide line at a distance of approx-
imately

3 ft (1.0 m) from the rear of the
vehicle
B Red guide line at a distance of approx-
imately

12 in (0.30 m) from the rear of the
vehicle
C Bumper
D Vehicle center axis (locating aid) Driving systems
165
Driving and parking Z

On-board computer (vehicles with-
out steering wheel buttons)
Operating the on-board computer
Overview :
È and 3 buttons
; Display
= f and g buttons
X To activate the on-board computer: turn
the key to position 1 in the ignition lock.
If you remove the key, then quickly re-insert it
and turn to position 1, the on-board computer
and instrument cluster are not activated.
You can control the display messages and set-
tings in the on-board computer with but-
tons : and = on the instrument cluster.
Buttons on the instrument cluster G
WARNING
If you are driving and reach through the
steering 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
the vehicle is stationary. Do not reach
through the steering wheel when driving. È Press briefly:
R Selects the menu or display
R in menu Settings, leaves the
submenu without adopting the
last setting and returns to the
main menu È Press and hold:
R
Returns to the standard display
or the Distance menu without
adopting the last setting 3 Press briefly:
R Selects a submenu or function
R Confirms the selected entry in
the list or the display, or confirms
the setting 3 Press and hold:
R
Resets the trip odometer and trip
computer values
R in the main menu of the Set‐
tings menu: resets settings to
the factory settings
R in menu Settings, resets values
and returns to the main menu f
g R
Sets the instrument cluster light-
ing (not in the Settings menu)
R Scrolls through lists
R Changes values or settings Display
Instrument cluster display
:
Clock (Y page 192)
V Cruise control (Y page
146)
; Permanent display: outside temperature or
speed

(Y page 180)176
On-board computer (vehicles without steering wheel buttons)
On-board computer and displays

Use the buttons in the instrument cluster.
X Press È to select the ? coolant temper-
ature bar display.
Under normal driving conditions and at the
correct coolant level, the display may rise to
the letter H. Settings menu
Introduction Settings menu start screen
The vehicle must be stationary. Use the but-
tons in the instrument cluster. X To display: press È to select the Set‐
tings menu.
The Settings menu is only displayed when
the vehicle is stationary. You can think of the
order of the submenus and functions as a cir-
cle. Press 3 on the instrument cluster to
scroll through the menu and select its subme-
nus or functions successively.
If you scroll forward using 3, the setting from
the previous submenu or function is adopted.
If you press È in a submenu, the submenu or
function is exited without adopting the setting.
The display then shows the start screen of the
Settings menu.
Depending on the vehicle’s equipment, you
have the following options in the Settings
menu:
R Setting the language for the display mes-
sages and displays
(Y page 179)
R Deactivating and activating ESP ®
( Y page 179) R
Setting the sensitivity of the rain sensor
( Y page

180)
R Activating and deactivating ATTENTION
ASSIST (Y page 180)
R Selecting the permanent display in the
header of the display ( Y page 180)
R Setting the unit for distance, consumption
and speed displays (Y page 180)
R Setting the time and date ( Y page 181)
X To reset settings to the factory settings:
turn the key to position 1 in the ignition lock
and press and hold 3 in the Settings
menu for at least five seconds.
For safety reasons, not all functions are reset.
Setting the display language The vehicle must be stationary. Use the but-
tons in the instrument cluster.
X Press È to select the Settings menu.
X Press 3 to select the Language submenu.
The display shows the current language
selection.
X Press f or g to set the language for all
display messages.
X Press 3 to confirm.
The next submenu is shown in the display.
Deactivating/activating ESP ® This menu is only available on vehicles without
the å button on the center console.
Please observe the important safety notes
under "ESP ®
(Electronic Stability Program)"
(Y page

68). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations
described in the following.
It may be best to deactivate ESP ®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel On-board computer (vehicles without steering wheel buttons)
179
On-board computer and displays Z