length MERCEDES-BENZ METRIS 2020 MY20 Operator’s Manual

Hazard warning lamp switch
X
To switch on/off: press the £ hazard
warning lamp switch.
If you have indicated a turn while the hazard
warning lamps are switched on, only the turn
signal lamps on the side of the vehicle selec-
ted will light up.
The hazard warning lamps automatically
switch on if: R an air bag is deployed.
R you brake sharply and bring the vehicle to a
halt from a speed of more than 45 mph
(70 km/h
).
The hazard warning lamps switch off automati-
cally if the vehicle reaches a speed of over
6 mph (10 km/h) again after a full brake appli-
cation.
i The hazard warning lamps still operate
even if the ignition is switched off. Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
X Switch on the low-beam headlamps and
drive off.
The level of moisture diminishes, depending
on the length of the journey and the weather
conditions (humidity and temperature).
If the level of moisture does not diminish:
X Have the headlamps checked at a qualified
specialist workshop. Interior lighting
Overview
Interior lighting buttons (example: comfort over-
head control panel)
:
p Switches the front left-hand reading
lamp on/off
; | Switches the automatic interior light-
ing control on and off
= c Switches the front interior lighting on
and off
? w Switches the rear compartment or
cargo compartment lighting on/off
A p Switches the front right-hand reading
lamp on and off
The number and arrangement of the buttons is
equipment-dependent. General notes
In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time,
unless the key is in position 2 in the ignition
lock. Automatic interior lighting control
The interior lighting is activated for about
20 seconds

when the key is removed from the
ignition lock. For a vehicle with steering-wheel
buttons, the light delay function for the interior
lighting can be switched on and off using the
on-board computer ( Y page 193)102
Interior lighting
Lights and windshield wipers

Change the wiper blade if:
R the wiper blade is damaged
R the service indicator has turned yellow
In order to activate the service indicator, you
have to remove the protective film
( Y page
111).
Windshield wipers X
Fold out wiper arm away from the wind-
shield.
X Hold the wiper arm and turn the wiper blade
in the direction of arrow : away from the
wiper arm as far as it will go.
X Slide catch ; upwards in the direction of
the arrow until you can feel and hear it
engage in the changing position. X
Remove wiper blade = from wiper arm by
pulling it in the direction of the arrow. X
Insert new wiper blade = into the wiper
arm in the direction of the arrow.
Please take the differing lengths of the two
wiper blades into account:
R Driver's side - long wiper blade
R Front-passenger side - short wiper blade X
Slide catch ; downwards in the direction
of the arrow until you can feel and hear it
engage.
X Fold the wiper arm back onto the wind-
shield. X
Remove protective film ? from the service
indicator on the tip of the wiper blades. Windshield wipers
111
Lights and windshield wipers Z

Problems with the engine
Problem
Possible causes/consequences and
M SolutionsThe engine does not
start.
The starter motor can
be heard. There is a malfunction in the fuel supply.
X
Turn the key back to position g in the ignition lock before
attempting to start the engine again.
X Start the engine again.
Please bear in mind that lengthy and frequent starting attempts
will drain the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop. The engine does not
start.
The starter motor can
be heard. The reserve
fuel warning lamp is lit
and the fuel gauge is at
0. The fuel tank has been run dry.
X Refuel the vehicle. The engine does not
start.
The starter motor can-
not be heard. The on-board voltage is too low. The battery is too weak or dis-
charged.
X Jump-start the vehicle ( Y page 272).
If the engine cannot be jump-started, the starter motor is faulty.
X Consult a qualified specialist workshop. The engine does not
start.
The starter motor can-
not be heard. The battery is discharged or faulty.
X
Check the battery for damage.
X Charge the battery (Y page
262).The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or a mechanical
component of the engine management system.
X Only depress the accelerator pedal slightly.
Unburnt fuel may otherwise get into the catalytic converter and
damage it.
X Have the cause rectified immediately at a qualified specialist
workshop. Automatic transmission
Important safety notes
G
WARNING
The vehicle can suddenly accelerate if the
engine speed is above the engine idling
speed and you then select transmission position h or k. There is a risk of an acci-
dent.
When engaging transmission position
h or
k at a standstill, always keep the brake
pedal depressed firmly and do not depress
the accelerator pedal at the same time. 130
Automatic transmission
Driving and parking

Assist is ready for use, the lane markings in
the symbol are shown as solid lines
;.
Setting the sensitivity of Lane Keeping
Assist X
In the Assist. menu on the on-board com-
puter, select the Lane Keeping Assist:
function
(Y page 191).
X Select Standard or Adaptive.
In the Standard setting, no warning vibration
occurs if:
R you operate the turn signal in the corre-
sponding direction. In this event, the warn-
ings are suppressed for a certain period of
time.
R a driving safety system, such as ABS, BAS or
ESP ®
, intervenes or performs a control
action.
When Adaptive is selected, there is also no
warning vibration when: R you accelerate hard, e.g. kickdown.
R brake sharply.
R you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
R you cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane
marking, the system differentiates between
various conditions and warns you accordingly.
The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend.
R the road has very wide lanes, such as a
highway.
R the system detects solid lane markings.
The warning vibration occurs later if:
R the road has narrow lanes.
R you cut the corner on a bend. Alertness Assistant ATTENTION
ASSIST
General notes ATTENTION ASSIST helps you during long,
monotonous journeys such as on freeways and
interstate highways. It is active in the 40 mph
(

60 km/h) to 125 mph (200 km/h) range. If
ATTENTION ASSIST detects typical indicators of fatigue or increasing lapses in concentration
on the part of the driver, it suggests taking a
break.
Important safety notes ATTENTION ASSIST is only an aid. The system
may not always detect fatigue or lapses in
concentration until too late, or may not detect
them at all. ATTENTION ASSIST is not a substi-
tute for a well-rested and attentive driver.
The functionality of ATTENTION ASSIST is
restricted, and warnings may be delayed or
not occur at all:
R if the length of the journey is less than
approximately

30 minutes
R if the road condition is poor, e.g. if the sur-
face is uneven or if there are potholes
R if there is a strong side wind
R if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you are predominantly driving at a speed
below 40 mph (60 km/h) or above 125 mph
(200 km/h)
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
ATTENTION ASSIST is reset and starts assess-
ing your attention again when you continue
your journey if:
R you switch off the engine
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break
Displaying the attention level Driving systems
155
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

When you deactivate PARKTRONIC, Active
Parking Assist will also be deactivated.
For vehicles with a trailer coupling installed,
the minimum length for parking spaces will be
slightly increased.
If you have attached a trailer to your vehicle,
you should not use Active Parking Assist. Once
the electrical connection is established
between your vehicle and the trailer, Active
Parking Assist is no longer available.
PARKTRONIC is then deactivated for the rear
area.
G
WARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could
result in a collision with another road user.
There is a risk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Active
Parking Assist parking procedure.
! If they cannot be avoided, drive over
obstacles such as curbs slowly and at an
obtuse angle. Otherwise, you may damage
the wheels or tires.
Active Parking Assist may also display spaces
not suitable for parking, e.g.:
R in a zone where parking or stopping is pro-
hibited
R in front of driveways or entrances and exits
R on unsuitable surfaces
Parking tips:
R on narrow roads, drive as closely as possible
past the parking space.
R parking spaces that are littered or over-
grown might be identified or measured
incorrectly.
R parking spaces that are partially occupied
by trailer drawbars might not be identified
as such or be measured incorrectly.
R snowfall or heavy rain may lead to a parking
space being measured inaccurately.
R when transporting a load which protrudes
from your vehicle, you should not use Active
Parking Assist.
R never use Active Parking Assist when snow
chains are installed. R
always ensure that the tire pressure is cor-
rect This has a direct influence on the park-
ing characteristics of the vehicle.
R if you mount wheels with a different wheel
size, this will have a direct influence on the
parking result.
R if you mount tires from another manufac-
turer, this may have an influence on the
parking result.
R if you drive slowly past the parking space, a
better parking result is achieved.
R pay attention to the PARKTRONIC warning
messages ( Y page
158) during the parking
procedure.
R you can intervene in the steering procedure
to correct it at any time. Parking assistance
will then be canceled and Active Parking
Assist stopped.
Use Active Parking Assist for parking spaces
that are:
R parallel or at right angles to the direction of
travel.
R on straight roads, not bends.
R on the same level as the road, e.g. not on
the pavement.
Detecting parking spaces G
WARNING
If there are objects above the detection
range:
R Active Parking Assist may steer too early
R the vehicle may not stop in front of these
objects
This could cause a collision. There is a risk
of an accident.
If objects are located above the detection
range, stop and deactivate Active Parking
Assist.
Objects located above the detection range of
Active Parking Assist will not be detected
when the parking space is measured. These
are not taken into account when the parking
procedure is calculated, e.g. overhanging
loads, overhangs or truck loading ramps.
Further information about the detection range
(Y page

157).160
Driving systems
Driving and parking

Active Parking Assist does not assist you park-
ing in spaces at right angles to the direction of
travel if:
R two parking spaces are located directly next
to one another
R the parking space is directly next to a low
obstacle such as a low curb
R you forward park
Active Parking Assist does not assist you park-
ing in spaces that are parallel or at right angles
to the direction of travel if:
R the parking space is on a curb
R the system reads the parking space as being
blocked, for example by foliage or grass
paving blocks
R the area is too small for the vehicle to
maneuver into
R the parking space is bordered by an obsta-
cle, e.g. a tree, a post or a trailer :
Detected parking space on the left
; Parking symbol
= Detected parking space on the right
If the driver's seat belt is fastened and all
doors are closed, Active Parking Assist is acti-
vated automatically when driving forwards.
The system is operational at speeds of up to
approximately
22 mph (35 km/h). While in
operation, the system independently locates
and measures parking spaces on both sides of
the vehicle.
Active Parking Assist will only detect parking
spaces:
R parallel or at right angles to the direction of
travel
R that are parallel to the direction of travel
and are at least 59 in (1.5 m) wide
R that are parallel to the direction of travel
and at least 40 in (1.0 m) longer than your
vehicle
R that are at right angles to the direction of
travel and at least 40 in (1.0 m) wider than
your vehicle i
Note that Active Parking Assist cannot
measure the length of a parking space if it is
at right angles to the direction of travel. You
will need to judge whether your vehicle will
fit in the parking space.
When the vehicle is driving at speeds of up to
approximately

20 mph (30 km/h), parking
symbol ; is shown as a status display in the
header.
The system detects and differentiates between
parking spaces which are parallel or at right
angles to the direction of travel. When a park-
ing space is detected, an arrow appears next
to parking symbol ; to indicate which side
the parking space is on. The parking space is
displayed while you are driving past it and until
you are approximately 50 ft (15 m) away from
it.
Active Parking Assist displays parking spaces
on the passenger side as standard. The park-
ing spaces on the driver's side are only dis-
played if you operate the turn signal on the
driver's side. When parking on the driver's
side, you must operate the turn signal until
you have started active parking assistance by
pressing the a button on the steering
wheel.
Parking G
WARNING
If you leave the driver's seat when the vehi-
cle is only being braked by Active Parking
Assist, the vehicle could roll away if:
R there is a malfunction in the system or in
the voltage supply.
R the electrical system in the engine com-
partment, the battery or the fuses are
tampered with.
R the battery is disconnected.
R the vehicle is accelerated, e.g. by a vehi-
cle occupant.
There is a risk of an accident.
Before leaving the driver's seat, always
secure the vehicle against rolling away.
If PARKTRONIC detects obstacles, Active Park-
ing Assist brakes automatically during the
parking process. You are responsible for brak-
ing in good time. Driving systems
161
Driving and parking Z

not depress the brake pedal constantly, but
periodically.
Observe the notes on ESP
®
trailer stabilization
( Y page
69).
Driving tips If the trailer begins to swing from side to side:
X Do not accelerate.
X Do not counter-steer.
X Brake if necessary.
i You can reduce the risk of the trailer
swinging and rocking by retrofitting anti-roll
bars or trailer stability programs. Further
information is available at your authorized
Mercedes-Benz Van Dealer.
R Maintain a greater distance than you would
when driving without towing a trailer.
R Avoid sudden braking. Apply the brakes gen-
tly at first to allow the trailer brake to over-
run. Then, increase the brake force quickly.
R The figures for the gradient climbing capa-
bilities from a standstill refer to sea level.
When driving in mountainous areas, note
that the power output of the engine, and
with it its gradient climbing capability,
decrease with increasing altitude. Coupling up a trailer
Trailer coupled ready for use X
Make sure that the selector lever of the
automatic transmission is in position j.
X On vehicles with an automatic transmission,
ensure that the transmission is in position
j.
X Engage the vehicle's parking brake.
X Close all doors.
X Position the trailer horizontally behind your
vehicle.
X Couple the trailer.
X Establish all electrical and other connec-
tions to the trailer. When doing so, hook the
breakaway cable of the trailer into the eye-
let on the ball coupling.
X Remove the objects that are preventing the
trailer from rolling, e.g. wheel chocks.
X Release the trailer parking brake.
Observe the maximum permissible trailer
dimensions (width and length).
Most federal states and all Canadian provinces
require by law: R Safety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must
be fastened to the vehicle's trailer coupling,
not to the bumper or the axle.
Leave enough slack in the chains. This
allows you to drive round tight corners.
R A separate brake system for certain types of
trailer.
R A safety shut-off for braked trailers. Find out
the specific requirements according to the
applicable laws.
If the trailer becomes detached from the
towing vehicle, the safety shut-off applies
the trailer brakes. Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed
restrictions. Many states require a separate
functional braking system for your trailer once
a certain weight limit is exceeded. For reasons
of safety, it is recommended that all trailers
use a separate functional braking system.
Make sure your vehicle/trailer combination
complies with local laws. This not only means
where you live, but also anywhere you are driv-
ing to. Information on this can be obtained
from the police and local authorities. 170
Towing a trailer
Driving and parking

Observe the following when towing a trailer:
R Practice driving around bends, stopping and
backing up at a place where there is no traf-
fic. This enables you to gain experience and
get used to the new handling characteris-
tics.
R Before 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
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer is equipped with a separate
functional braking system, check before
each journey whether the brakes are func-
tioning correctly.
R Secure the load on the trailer according to
the applicable specifications and current
standards on securing loads
(Y page 244).
R When driving with a trailer, check at regular
intervals that the load is secured and that
the brakes and lights are working.
R Bear in mind that the handling will be less
stable when towing a trailer than when driv-
ing without one. Avoid sudden steering
movements.
R The 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.
R If possible, do not brake suddenly, but
rather moderately at first so that the trailer
can activate its brakes. Then increase the
force on the brake pedal.
R If 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. R
When 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
installed, the trailer brakes.
R If the coolant temperature increases dra-
matically while the air-conditioning system
is switched on, switch off the air-condition-
ing system.
Coolant heat can also be dissipated by
switching the airflow and the temperature of
the air conditioning to the maximum level.
Open the windows if necessary.
R When overtaking, pay particular attention to
the extended length of your vehicle/trailer
combination.
Due to the length of your vehicle/trailer
combination you need an additional dis-
tance before you can return to your original
lane. Uncoupling a trailer
G
WARNING
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 rebound-
ing of the overrun brake.
X Make sure that the selector lever of the
automatic transmission is in position P.
X Engage the vehicle's parking brake.
X Close all doors.
X Apply the parking brake of the trailer.
X In addition, secure the trailer against rolling
away with a wheel chock or similar object.
X Remove the trailer cable and safety chains
and decouple the trailer. Towing a trailer
171
Driving and parking Z

120 km/h! (only for certain countries)
maximum permissible speed exceeded
= Display panel for display messages, menus
and menu bar
? Transmission position (Y page 132)
A Fuel level
Fuel filler flap location indicator t: the
fuel filler cap is on the left-hand side
B è Rear window wiper
(Y page 110)
Display panel = shows the selected menu or
submenu and display messages. Menu overview
The Settings menu is only displayed when
the vehicle is stationary. You can think of the
order of the menus and functions as a circle.
Press È on the instrument cluster to scroll
through the menus.
If you scroll forward in the Settings menu
using 3, the setting from the previous sub-
menu 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.
Operation information can be found under
"Operating the on-board computer"
(Y page

176).
Depending on the vehicle equipment, you can
call up the following menus, displays or func-
tions:
R trip odometer and odometer display
(Y page 177)
R trip computer display (Y page 177)
R current range display (Y page 178)
R current fuel consumption display
(Y page 178)
R digital speedometer ( Y page 178)
R coolant temperature gage (Y page 178)
R display messages in the message memory
(Y page 195)
The following menus, displays and functions
are only displayed when the vehicle is station-
ary:
R next service due date display ( Y page 258)
R tire pressure monitor restart (Y page 285)
R Settings menu for setting or activating/
deactivating driving and driver assistance systems as well as display options
(Y page

179) Distance menu
Odometer
If the display shows the speed in the header,
the display beside trip odometer : also
shows the outside temperature.
You can switch the permanent display in the
header

(Y page 180).
Use the buttons in the instrument cluster.
X To display: press and hold È until the dis-
play shows trip odometer : and odome-
ter ;.
X To reset: press and hold 3 until the trip
odometer is reset to 0.0.
You can set the unit of measurement for the
trip odometer in the Distance Unit: sub-
menu (Y page

180). Trip computer menu
Trip computer
:
Distance
; Length of journey
= Average fuel consumption
? Average speed On-board computer (vehicles without steering wheel buttons)
177
On-board computer and displays Z