2020 MERCEDES-BENZ METRIS warning

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

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
possible. Note that your vehicle may not be
equipped with all of the described functions.
This also applies to systems and functions rel-
evant to safety.
Read the information on qualified specialist
workshops (Y page
32).Exterior lighting
Important safety notes
For reasons of safety, Mercedes-Benz recom-
mends that you drive with the lights switched
on even during the daytime. There may be dif-
ferences in operation due to legal require-
ments and voluntary recommendations in
some countries. Light switch
Operation 1W
Left-hand standing lamp
2X Right-hand standing lamp
3T Parking lamps, license plate and
instrument cluster lighting
4$ Lights off and daytime running lamps
à With light sensor: automatic driving
lights, controlled by the light sensor
5L Low-beam or high-beam headlamps
BN Fog lamps
CR Rear fog lamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
X Turn the light switch to the $ or Ã
position.
The exterior lighting (except the parking/
standing lamps) switches off automatically in
the following situations:
R if you remove the key from the ignition lock.
R if you open the driver's door with the key in
position g in the ignition lock. Exterior lighting
99
Lights and windshield wipers

Low-beam headlamps
When the ignition is switched on and the light
switch is in the
L position, the parking
lamps and low-beam headlamps are switched
on even if the light sensor does not sense dark
ambient light. This is particularly useful when
there is fog or rain.
X To switch on: turn the key to position 2 in
the ignition lock or start the engine.
X Turn the light switch to the L position.
The L indicator lamp in the instrument
cluster lights up.
Daytime running lamps X
To switch on: turn the light switch to the
$ or à position.
Automatic headlamp mode G
WARNING
When the light switch is set to Ã, the
low-beam headlamps may not be switched
on automatically if there is fog, snow or
other causes of poor visibility due to the
weather conditions such as spray. There is a
risk of an accident.
In such situations, turn the light switch to
L.
Automatic headlamp mode is only a driving
aid. You are responsible for the vehicle lighting
at all times.
When the parking lamps and low-beam head-
lamps are switched on, the green T (park-
ing lamps) and L (low-beam headlamps)
indicator lamps in the instrument cluster light
up.
à is the preferred light switch setting. The
light setting is automatically selected accord-
ing to the brightness of the ambient light
(exception: poor visibility due to weather con-
ditions, such as fog, snow or spray):
R Key in position 1 in the ignition lock: the
parking lamps are switched on or off auto-
matically depending on the brightness of the
ambient light.
R When the engine is on: depending on the
ambient light, the daytime running lamps or the parking lamps and low-beam headlamps
are switched on/off automatically.
X To switch on automatic headlamp mode:
turn the light switch to
Ã.
Fog lamps/rear fog lamp You can only switch the fog lamps on or off
manually in vehicles which have fog lamps
installed.
Front fog lamps help you to see and be seen in
conditions of poor visibility due to fog or pre-
cipitation. They can only be operated together
with the parking lamps or with the low-beam
headlamps.
The rear fog lamp improves visibility of your
vehicle for the traffic behind in the event of
heavy fog. Observe the legal requirements of
the country you are currently in when using
the rear fog lamp.
X Turn the light switch to L or Ã.
X Turn the key to position 2 in the ignition
lock or start the engine.
X To switch the front fog lamps on/off:
press the N button.
When the green
N indicator lamp in the
instrument cluster goes on, the fog lamps
are switched on.
X To switch the rear fog lamp on/off: press
the R button.
When the yellow R indicator lamp in the
instrument cluster goes on, the rear fog
lamp is switched on.
Standing lamps !
If the battery charge is very low, the stand-
ing lamps will switch off automatically to
enable the next engine start. Always park
your vehicle in accordance with legal regula-
tions, in a secure and adequately lit loca-
tion. Avoid leaving the T parking lamps
on for several hours. If possible, switch on
the right X or left W standing lamp.
Switching on the standing lamps ensures that
the corresponding side of the vehicle is illumi-
nated. 100
Exterior lightingLights and windshield wipers

Switching on the standing lamps:
X Turn the key to position 0 (Y page 127) in
the ignition lock or remove the key.
X Right-hand standing lamp: turn the light
switch to position X.
X Left-hand standing lamp: turn the light
switch to position W.Combination switch
Turn signal lamp :
To indicate a right turn
; To indicate a left turn
X To indicate: press the combination switch
in desired direction : or ; until it
engages.
The combination switch automatically
returns to its original position after large
steering movements.
X To indicate briefly: press the combination
switch briefly in desired direction : or ;.
The corresponding turn signal flashes three
times. High-beam headlamps and high-beam
flasher :
High-beam headlamps
; High-beam flasher
X To switch on the high-beam headlamps:
turn the light switch to
L or Ã.
X Press the combination switch forwards :.
The K indicator lamp in the instrument
cluster lights up.
i In the à position, the high-beam head-
lamps are only switched on when it is dark
and the engine is running.
X To switch off the high-beam headlamps:
move the combination switch back to its
normal position.
The K indicator lamp in the instrument
cluster goes out.
X To flash the headlamps: turn the key to
position 1 or 2 in the ignition lock.
X Pull the combination switch briefly in direc-
tion of arrow ;. Hazard warning lamps
G
WARNING
If you open the rear-end doors 90°, the rear
lighting systems are no longer visible. The
vehicle will then be difficult for other road
users to see or will not be seen by them at
all, particularly if it is dark or visibility is
poor. There is a risk of an accident.
You should therefore ensure in this and simi-
lar situations that the vehicle is visible from
the rear in accordance with the relevant
national regulations, by using the warning
triangle, for instance. Exterior lighting
101
Lights and windshield wipers Z

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

X
Remove bulb = from socket ;.
X Press new bulb = into socket ;.
X Screw socket ; clockwise into the lamp
housing :.
X Position lamp housing : on the left-hand
side and engage. Signal and ambient light in the tail-
gate
Type of lamp: W 5 W
X Press in the spring catch of the lamp hous-
ing at the side of crystal clear lamp lens ;
with a suitable object, e.g. with a screw-
driver, and pry off the lamp housing.
X Turn socket = counter-clockwise and
remove from the lamp housing.
X Remove the bulb from socket =.
X Press the new bulb into socket =.
X Screw socket = clockwise into the lamp
housing.
X Position the lamp housing to the side of red
lamp lens : and engage. Replacing bulbs
Important safety notes
G
WARNING
Bulbs, lamps and connectors can get very
hot when operating. If you change a bulb,
you could burn yourself on these compo-
nents. There is a risk of injury.
Allow these components to cool down
before changing a bulb. !
Make sure the bulbs are always securely
installed.
The bulbs and lamps are an essential compo-
nent of vehicle safety. You must therefore
make sure that these function correctly at all
times. Have the headlamp setting checked
regularly.
Observe the following notes when changing a
bulb:
R Always switch off the ignition before replac-
ing bulbs in the lighting system. This will
prevent a short circuit.
R Wear gloves and eye protection when
changing a bulb.
R Do not use a bulb that has been dropped or
that has scratches on its glass tube. The
bulb could may explode.
R A bulb could explode if:
- you touch it
- it is hot
- you drop it
- you scratch or score it
R Marks on the glass tube shorten the operat-
ing life of a bulb. Do not touch the glass
tube with your bare hands. If necessary,
clean the glass tube when cold with alcohol
or spirit. Then rub off the glass tube with a
clean, lint-free cloth.
R Make sure that bulbs are protected from
moisture when operating and that they do
not come into contact with liquids. Make
sure that seals are seated correctly and
replace damaged seals.
R Check the contacts for signs of corrosion
and clean these if required.
R Only operate bulbs in closed lamps which
have been designed for this purpose.
R Only use spare bulbs of the same type, with
the prescribed voltage and the correct wat-
tage.
R If the new bulb does not light up, consult a
qualified specialist workshop. Replacing bulbs
105Lights and windshield wipers Z

Switching the rear window wiper
on/off
1
b To wipe with washer fluid
2 ° Intermittent wipe
3 $ Rear window wiper off
4 b To wipe with washer fluid
X Turn the key to position 1 or 2 in the igni-
tion lock.
X Move the è switch to the corresponding
position.
If the rear window wiper is activated, the
è symbol is shown in the status area of
the display.
The Status Overview in the Assist.
menu then also shows the è symbol for
vehicles with steering wheel buttons
(Y page
189).
X To wipe with washer fluid: press the è
switch beyond the current position as far as
it will go to 1 or press and hold 4.
When you release the è switch, the rear
window wiper continues to wipe for about
another five seconds. The rear window
wiper then wipes according to the original
position 2 or 3.
The rear window wiper switches on automati-
cally if you engage reverse gear and the wind-
shield wipers are on.
If the vehicle is stationary and you open the
tailgate or rear-end door, the rear window
wiper will stop automatically. The rear window
wiper will only resume wiping again when the
tailgate and rear-end door are closed and you
pull away again.
The rear window will no longer be wiped prop-
erly if the wiper blade is worn. This may pre-
vent you from observing the traffic conditions.
Information on replacing the wiper blade can be found under "Replacing wiper blades"
(
Y page

110). Replacing the wiper blades
Important safety notes G
WARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you
could be trapped by the wiper arm. There is
a risk of injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
! Never open the hood/tailgate or rear
doors if a windshield wiper arm has been
folded away from the windshield/rear win-
dow.
Never fold a windshield wiper arm without a
wiper blade back onto the windshield/rear
window.
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release
the windshield wiper arm without a wiper
blade and it falls onto the windshield/rear
window, the windshield/rear window may
be damaged by the force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
! Only hold the wiper blade by the wiper
arm. You could otherwise damage the wiper
rubber.
Wiper blades are wear parts. The windshield
will no longer be wiped properly if the wiper
blades are worn. This may prevent you from
observing the traffic conditions.
Please observe the service indicator after
changing the wiper blades of the windshield
wiper.
Service indicator Replacement wiper blades for the windshield
wiper have a service indicator on the tip of the
wiper blade.
Depending on the amount of use, the service
indicator will change color from black to yel-
low.110
Windshield wipers
Lights and windshield wipers

Switching air-recirculation mode
on/off
Important safety notes You can deactivate the intake of fresh air if
unpleasant odors enter the vehicle from out-
side. The air inside the vehicle is then circula-
ted.
When you switch on air-recirculation mode,
the side windows and windows could fog up
more quickly, in particular at low outside tem-
peratures. Only switch on air-recirculation
mode for a short time.
Air-conditioning system or dual-zone
automatic climate control X
Switch on climate control ( Y page 117).
X Press the h button.
If the indicator lamp in the h button
lights up, air-recirculation mode is activated.
Air-recirculation mode switches on automati-
cally: R at high outside temperatures
R while driving in a tunnel (only vehicles with a
navigation system)
The indicator lamp in the h button is then
not lit up. Outside air is added automatically
after about

30 minutes.
Air-recirculation mode is deactivated automati-
cally:
R after approximately five minutes at outside
temperatures below about 45 ‡ (7 †)
R after approximately five minutes when the
cooling with air-dehumidification function is
deactivated
R after approximately 30 minutes at outside
temperatures above about 45 ‡ (7 †) and
when the cooling with air-dehumidification
function is active Convenience opening/pre-entry cli-
mate control
G
WARNING
During convenience opening, body parts
could be drawn in or become trapped
between the side window and the door
frame. There is a risk of injury. Monitor the entire opening procedure when
using convenience opening. When opening,
make sure that nobody touches the side
window. Release the % switch immedi-
ately if somebody becomes trapped, to
interrupt the opening procedure.
X Pre-entry climate control and conveni-
ence opening with the key:
press and hold
the % button on the key.
The side windows open automatically and
the blower of the climate control system is
activated.
X Release the % button.
i At high interior temperatures, the blower is
also switched on when a door is opened.
This means that slightly cooled air enters
the vehicle interior after the engine is star-
ted, to cool the vehicle more rapidly. Switching the residual heat function
on/off
General notes Only vehicles with dual-zone automatic climate
control have the residual heat function.
Once the engine is switched off, it is possible
to make use of the residual heat of the engine
to continue heating or ventilating the front
compartment of the vehicle for approximately
30 minutes. The heating or ventilation time
depends on the set interior temperature.
Switching the function on/off X
Turn the key to position 0 in the ignition
lock or remove it.
X Press the Ì button.
If the residual heat function is activated, the
indicator lamp in the Ì button comes on.
The blower will run at a low speed regard-
less of the airflow setting.
If you activate the residual heat function at
high temperatures, only the auxiliary ventila-
tion will be activated. The blower then runs
at medium speed. Operating the climate control system
123
Climate control Z