sensor MERCEDES-BENZ METRIS 2019 MY19 Operator’s Manual

Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
In particular, the detection of obstacles can be
impaired in the case of:
Rdirt on the sensors or anything else covering
the sensors
Rfog, heavy rain or snow
Rnarrow vehicles, e.g. motorcycles or bicycles
Rvery wide lanes
Rnarrow lanes
Rvehicles not driving in the middle of their lane
Rbarriers or other road boundaries
Vehicles in the monitoring range are then not
indicated.
iUSA only:
This device has been approved by the FCC as
a "Vehicular Radar System". The radar sensor
is intended for use in an automotive radar
system only. Removal, tampering, or altering
of the device will void any warranties, and is
not permitted by the FCC. Do not tamper with,
alter, or use in any non-approved way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
Monitoring range of the sensors
Blind Spot Assist monitors the area shown in the
diagram up to 118 in (3 m) behind and directly
next to your vehicle.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if the vehicles are driving on the inner side
of their lane.
Due to the nature of the system:
Rwarnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
Rwarnings may be interrupted when driving
alongside long vehicles, e.g. trucks, for a pro-
longed time.
The two sensors for Blind Spot Assist are inte-
grated into the sides of the rear bumper. Make
sure that the bumper is free of dirt, ice or slush
in the vicinity of the sensors. The radar sensors
must not be covered, for example by rear-moun- ted cycle racks or overhanging loads. Following
a severe impact or in the event of damage to the
bumper, have the function of the radar sensors
checked at a qualified specialist workshop.
Blind Spot Assist may otherwise not work prop-
erly.
Driving systems149
Driving an d parking
Z

XSelectStatus Overviewin theAssist.menu and display the attention level
(Ypage 186).
The following information is displayed:
Rthe length of the journey since the last break.
Rthe attention level determined by ATTENTION
ASSIST, displayed in a bar display in five levels
from low to high.
Rif ATTENTION ASSIST is unable to calculate
the attention level and cannot output a warn-
ing, the System
Passivemessage appears in
the display. The bar display is then dimmed.
This is the case, for example, if you are pre-
dominantly driving at a speed below 40 mph
(60 km/h) or above 125 mph (200 km/h).
Activating ATTENTION ASSIST
XActivating ATTENTION ASSIST with the on-
board computer:
Ron vehicles without steering wheel buttons
(Ypage 177)
Ron vehicles with steering wheel buttons
(Ypage 187)
For vehicles with steering wheel buttons, the
system determines the attention level of the
driver depending on the setting selected:
Standard: the sensitivity with which the sys-
tem 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:
Ron vehicles without steering wheel buttons,
the À indicator lamp in the instrument
cluster lights up
Ron vehicles with steering-wheel buttons, the
display shows the Àsymbol:
-in the status area
-in the Status Overviewof the Assist.menu (Ypage 186)
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 corresponds
to the last selection activated – standard or sen-
sitive.
If you switch off ATTENTION ASSIST in a vehicle without steering wheel buttons, the system
remains switched off even after you start the engine. The status of the system after switching
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!orAttent.Asst: Take Break!is shown in the display.
An additional warning tone sounds.
XIf necessary, take a break.
XConfirm 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 continues to
detect increasing lapses in concentration, 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 vis-
ually and audibly the distance between your
vehicle and an object.
Your vehicle features two separate sound emit- ters with different frequencies for the warning
tones. The warning ranges in front of and behind
the vehicle are indicated by different warning
tones.
PARKTRONIC is activated automatically when
you:
Rturn the key to position 2in the ignition lock
Rrelease the parking brake and
Rmove the selector lever to position D,N or R
PARKTRONIC is deactivated at speeds above
11 mph (18 km/h). PARKTRONIC is reactivated
at speeds below 10 mph (16 km/h).
Important safety notes
PARKTRONIC is only an aid. It cannot replace
your own awareness of the immediate surround-
ings. You are responsible for safe maneuvering,
Driving systems153
Driving and parking
Z

parking and pulling away. Make sure that there
are no persons, animals or objects in the maneu-
vering area while maneuvering and parking in/
leaving parking spaces.
!Pay particular attention to obstacles above
or below the sensors when parking, such as
flower pots or trailer towbars. PARKTRONIC
does not recognize such objects when they
are in the immediate vicinity of the vehicle.
You could damage the vehicle or objects.
PARKTRONIC can suffer interference from:
Rultrasonic sources such as a truck's
compressed-air brakes, an automatic car
wash or a pneumatic drill
Rattachments to the vehicle, e.g. rear moun-
ted racks
Rnumber plates (vehicle license plates) that
are not affixed flat against the bumper
Rdirty or icy sensors
Remove a detachable trailer coupling if it is no
longer required. PARKTRONIC measures the
minimum detection range to an obstacle from
the bumper, not the ball coupling.
Range of the sensors
PARKTRONIC does not account for obstacles
that are:
Rbeneath its detection range, e.g. persons, ani-
mals or objects
Rabove its detection range, e.g. overhanging
loads, overhangs or truck loading ramps
The sensors must be free of dirt, ice or slush.
Otherwise, they cannot function correctly.
Clean the sensors regularly, taking care not to
scratch or damage them (
Ypage 268).
Front sensors
CenterApprox. 39 in
(100 cm)
CornersApprox. 24 in (60 cm)
Rear sensors
CenterApprox. 47 in
(120 cm)
CornersApprox. 31 in (80 cm)
Minimum distance
CenterApprox. 8 in (20 cm)
CornersApprox. 8 in (20 cm)
If an obstacle is within this range, the corre-
sponding segments of the warning displays light
up and you hear a warning tone. If the distance
falls below the minimum, the distance from an
obstacle may no longer be shown.
154Driving systems
Driving and parking

Warning displays
Front area warning display in center of dashboard.
Rear area warning display on the dashboard
Rear area warning display in center of headliner in
rear compartment.
:
Warning segments for the left side of the
vehicle
;Warning segments for the right side of the
vehicle
=Segments showing operational readiness
The warning displays show the distance
between the sensor and the obstacle.
The warning display is divided into five yellow
and two red segments for each side of the vehi- cle. PARKTRONIC is operational if operational
readiness indicator
=lights up.
There is a malfunction if only the red segments
of the warning display light up (
Ypage 156).
The selected transmission position determines
whether the front and/or rear area is monitored.
Selector lever posi-
tionMonitoring
hFront area
k oriFront and rear area
jNo areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the vehi-
cle's distance from the obstacle. In addition,
warning tones are emitted.
When the distance to the obstacle is sufficient,
you will hear an intermittent warning tone. When
the distance to the obstacle is sufficient, you will
hear an intermittent warning tone. When the
minimum distance is reached, you hear a con-
tinuous warning tone.
Roll-back warning
Regardless of transmission position,
PARKTRONIC automatically monitors the area
behind the vehicle if the vehicle begins to roll
backwards, e.g. after stopping on an uphill gra-
dient.
Activating/deactivating PARKTRONIC
XPress the fbutton.
If PARKTRONIC is deactivated, the indicator
lamp in the switch lights up.
Driving systems155
Driving and parking
Z

Towing a trailer
PARKTRONIC detects a coupled trailer if your
vehicle is equipped with the corresponding elec-
trical installations for trailer towing.
PARKTRONIC is deactivated for the rear area
when you establish an electrical connectionbetween 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
ProblemPossible causes/consequences and
MSolutions
Only the red segments in
the PARKTRONIC warn-
ing 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 segments in
the PARKTRONIC warn-
ing display go out.PARKTRONIC has malfunctioned and has switched itself off.
XIf problems persist, have PARKTRONIC checked at a qualified spe- cialist workshop.
The PARKTRONIC warn-
ing displays implausible
distances.
For example, all the seg-
ments may be lit even
though there is no obsta-
cle present.The PARKTRONIC sensors are dirty or iced up.
XClean the PARKTRONIC sensors (Ypage 268).
XTurn the key to position 2in the ignition lock.
The license plate or other parts attached near the sensors may not be
secured correctly.
XCheck the license plate and attachment parts near the sensors for
correct seating.
An external radio or ultrasonic source may be causing interference.
XCheck 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 visually and audibly the distance between your vehicle and an
obstruction. To do this, PARKTRONIC uses the ultrasonic sensors of the Active Parking Assist
(
Ypage 153).
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.
When you deactivate PARKTRONIC, Active Park-
ing Assist will also be deactivated.
156Driving system
s
Driving an d parking

On vehicles with steering wheel buttons, the
light sensor in the instrument cluster automati-
cally controls the brightness of the display light-
ing.
While the lights are on, the brightness is depend-
ent upon the brightness of the ambient light.
You can also adjust the brightness of the instru-
ment lighting and the display lighting
Rby pressing thefand gbuttons on the
instrument cluster on vehicles without steer-
ing wheel buttons (not in the Settings
menu)
Rby turning brightness control knob :on vehi-
cles with steering wheel buttons
Speedometer
If you change the wheel size on your vehicle,
make sure it is assigned to the correct wheel
size category (
Ypage 279). If you change wheel
size category without recoding the control unit,
the speedometer indication will be inaccurate.
The current vehicle speed may then be higher
than the speed displayed in the speedometer.
The speed can also be shown in the display in
the form of a digital speedometer:
ROn vehicles without steering wheel buttons
(Ypage 175)
ROn vehicles with steering wheel buttons
(Ypage 181)
iIn some countries, a warning sounds and/or
the display shows a message when the vehi-
cle reaches the maximum legally permissible speed limit, e.g. at 75 mph (120 km/h).
Tachometer
!
Do not drive in the overrevving range, as this
could damage the engine.
HEnvironmental note
Avoid driving at high engine speeds. This
unnecessarily increases the fuel consumption
of your vehicle and harms the environment as
a result of increased emissions.
The red band in the tachometer indicates the
engine's overrevving range.
To protect the engine, the fuel supply is inter-
rupted when the red band is reached.
Outside temperature display
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Please bear in mind that the outside tempera-
ture display shows the air temperature meas-
ured and not the road temperature.
The display shows the outside temperature in
the header:
Ron vehicles without steering wheel buttons
(Ypage 173)
Ron vehicles with steering wheel buttons
(Ypage 179)
Changes in the outside temperature are dis-
played after a short delay.
Coolant temperature gauge
GWARNING
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.
On vehicles without steering wheel buttons, you
can have the coolant temperature shown in the
display (
Ypage 175).
On vehicles with steering wheel buttons, an ana-
log coolant temperature gage is located in the
tachometer in the instrument cluster
(
Ypage 39).
Under normal operating conditions and with the
specified coolant level, the gauge may rise to
248 ‡ (120 †).
172Display and operation
On-board computer and displays

Settings menu
Introduction
Settings menu start screen
The vehicle must be stationary. Use the buttons
in the instrument cluster.
XTo display: pressÈto select the Settingsmenu.
The Settings
menu is only displayed when the
vehicle is stationary. You can think of the order
of the submenus and functions as a circle. Press
3 on the instrument cluster to scroll through
the menu, starting with its start screen and
select its submenus or functions successively.
If you scroll forward using 3, the setting from
the previous submenu or function is adopted.
If you press Èin 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:
RSetting the language for the display messages
and displays (Ypage 176)
RDeactivating and activating ESP®
(Ypage 176)
RSetting the sensitivity of the rain sensor
(Ypage 177)
RActivating and deactivating ATTENTION
ASSIST (Ypage 177)
RSelecting the permanent display in the header
of the display (Ypage 177)
RSetting the unit for distance, consumption
and speed displays (Ypage 177)
RSetting the time and date (Ypage 178)
XTo reset settings to the factory settings:
turn the SmartKey to position 1in the ignition
lock and press and hold 3in 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 buttons
in the instrument cluster.
XPress Èto select the Settingsmenu.
XPress3to select the Languagesubmenu.
The display shows the current language selec- tion.
XPress forg to set the language for all dis-
play messages.
XPress 3to 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)"
(Ypage 66).
GWARNING
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 descri-
bed in the following.
It may be best to deactivate ESP
®in the follow-
ing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
Further information can be found under "ESP®
(Electronic Stability Program)" (Ypage 66).
The vehicle must be stationary and the engine
must be running. Use the buttons in the instru-
ment cluster.
XPress Èto select the Settingsmenu.
XPress3to select the ESPsubmenu.
The display shows the current status.
If the display shows the Oper.
OnlyPoss.WithEngineOnmessage, confirm the mes-
sage with 3and start the engine. The display
then shows the ESP
submenu and the ESP®
status.
If theESP
Inoperativemessage is shown in
the display, ESP is not available due to a mal-
function and is deactivated. If you confirm the
176On-board computer (vehicles without steering wheel buttons)
On-board computer and displays

message with3, the display shows the next
submenu.
XPress forg to activate or deactivate ESP.
XPress 3to confirm.
The next submenu is shown in the display.
If the å warning lamp in the instrument
cluster lights up when the vehicle is ready to
drive, ESP
®is deactivated.
Observe the information on warning lamps
(
Ypage 224) and display messages
(Ypage 196).
Setting the sensitivity of the rain sensor
The vehicle must be stationary. Use the buttons
in the instrument cluster.
XPress Èto select the Settingsmenu.
XPress3to select the Rain Sensorsub-
menu.
The display shows the current sensitivity set-
ting.
XPress forg to select the Low,Standardor
Sensitivesetting. This setting controls the
rain sensor's sensitivity to precipitation. The
windshield wiper will then wipe more or less
frequently at the same precipitation intensity.
XPress 3to confirm.
The next submenu is shown in the display.
You can find further information under "Wind-
shield wiper" (
Ypage 106).
Activating/deactivating ATTENTION
ASSIST
The vehicle must be stationary. Use the buttons in the instrument cluster.
XPress Èto select the Settingsmenu.
XPress3to select the Attention Assistsubmenu.
The display shows the current status.
If theAttention Assist Inoperative
message is shown in the display, ATTENTION
ASSIST is not available due to a malfunction
and is deactivated. If you confirm the mes-
sage with 3, the display shows the next sub-
menu.
XPress forg to activate or deactivate
ATTENTION ASSIST.
XPress 3to confirm.
The next submenu is shown in the display. Further information can be found under "ATTEN-
TION ASSIST" (
Ypage 152).
Selecting the permanent display func-
tion
With the
Permanent Display:function, you
can switch the display in the header between
outside temperature and speed.
If the display shows the speed in the header, the
outside temperature is shown with the odome-
ters (
Ypage 174).
The additional speedometer unit in the header is
always inverse to the speedometer unit.
The vehicle must be stationary. Use the buttons
in the instrument cluster.
XUsing Èselect the Settingsmenu.
XUsing3select the Permanent Display:submenu.
The display indicates the selected setting of
Outside Temp.
orSpeedometer.
XChange the setting by pressing forg.
XPress 3to confirm.
The next submenu is shown in the display.
Selecting the unit for the distance
In the Distance Unit:submenu, you can
select whether the display shows certain infor-
mation in kilometers or miles.
The vehicle must be stationary. Use the buttons
in the instrument cluster.
XPress Èto select the Settingsmenu.
XPress3to select the Distance Unit:sub-
menu.
The display indicates the selected setting of
km
or Miles.
XChange the setting by pressing forg.
XPress 3to confirm.
The display shows the next submenu or the
Settings
menu again.
The selected distance units are used for the dis- plays:
RDigital speedometer
ROdometer and trip odometer
RTrip computer
RRange
RCurrent consumption
RCruise control
RService intervals
On-board computer (vehicles without steering wheel buttons)177
On-board computer and displays
Z

Activating/deactivating interiorlighting
delayed switch-off
If you activat eth eInteriorLightingDelay:function ,th einterio rlightin gremains lit for a
further 20 seconds.
Usin gth esteering whee lbuttons
XUse th e= or; buttonto select th e
Settings.menu.
XUse : or9 to select Lights.
XPressato confirm .
XUse: or9 to select th eInteriorLighting Delayfunction .
The curren tstatus appears.
XTo switch on/of f:press aagain.
Vehicle submenu
Setting the sensitivity of thera in sensor
Usin gth esteering whee lbuttons
XPress =or; to select th eSettingsmenu.
XPress :or9 to select Vehicle.
XPressato confirm .
XPress:or9 to select th eRai nSen ‐sor Sensitivityfunction .
The display shows th ecurren tsetting.
XPress ato chang eth esetting.
XPress :or9 to select th eHig h,
Standardor Lowsetting. This settin gcontrol s
th erain sensor's sensitivit yto precipitation.
The windshield wiper then wipes mor eor less
frequently at th esame precipitatio nintensity.
XPress th ea buttonto store th eentry.
You can fin dfurther information under "Wind-
shield wiper " (
Ypage 106).
Switching the automatic locking featu re
on/off
Usin gth esteering whee lbuttons
XPress =or; to select th eSettingsmenu.
XPress :or9 to select Vehicle.
XPressato confirm .
XPress:or9 to select th eAutomaticDoo rLoc kfunction .
The curren tstatus is shown.
XTo act ivate/deact ivate:pressaagain.
If you activat eth eAutomatic
Doo rLockfunc-
tion, your vehicl ewill loc kautomatically from a
spee dof approximately 15 km/h.
You can fin dfurther information under "Auto-
matic door lock" (
Ypage 74).
Activating/deactivating the acoustic
locking confi rmation
Usin gth esteering whee lbuttons
XPress =or; to select th eSettingsmenu.
XPress :or9 to select Vehicle.
XPressato confirm .
XPress:or9 to select AcousticLockFeedback.
The curren tstatus is shown.
XTo act ivate/deact ivate:pressaagain.
If you activat eth eAcoustic Loc kFeedback
function ,an acoustic tone sounds when th e
vehicl eis locked.
Restoring the factory settings
Usin gth esteering whee lbuttons
XPress =or; to select th eSettingsmenu.
XPress :or9 to select FactorySet ‐ting.
XPress ato confirm .
The Reset All Settings?function is dis-
played.
XPress :or9 to select NoorYes.
XPress ato confirm th echoice.
If you select Yes,th edisplay shows aconfir-
mation message .
190On-board computer (vehicles with steering wheel buttons)
On-board computer and displays

Lights
Display messagesPossible causes/consequences andMSolutions
b
CheckLeftLowBeamorCheck Right LowBeam
The left or right-hand low-beam headlamp is faulty.
XChange the bulb (Ypage 102).
b
Chk. Trailer L.Turn Sig.orChk.TrailerR.TurnSig.
The left or right-hand trailer turn signal lamp is faulty.
XChange the bulb (see the trailer manufacturer's operating instruc-
tions).
b
Chk. Trailer BrakeLamp
The trailer brake lamp is faulty.
XChange the bulb (see the trailer manufacturer's operating instruc-
tions).
b
Chk. Trailer L.Tail LamporChk.TrailerR.TailLamp
The left or right-hand trailer tail lamp is faulty.
XChange the bulb (see the trailer manufacturer's operating instruc-
tions).
b
Auto Lamps Inopera‐tive
The light sensor is faulty. The automatic headlamp feature is mal-
functioning.
XSwitch the light functions on/off manually (Ypage 96).
XVisit a qualified specialist workshop.
b
Chk. Rear L. TurnSignalorChk. RearR. Turn Signal
The rear left-hand or rear right-hand turn signal is faulty.
XChange the bulb (Ypage 102).
b
Chk. Front L. TurnSignalorChk.FrontR.TurnSignal
The front left-hand or front right-hand turn signal is faulty.
XChange the bulb (Ypage 102).
b
Chk. Center BrakeLamp
The high-mounted brake lamp is faulty.
XVisit a qualified specialist workshop.
b
Chk.L.Tail/BrakeLamporChk. R.Tail/ Brake Lamp
The left or right-hand tail lamp/brake lamp is faulty.
XChange the bulb (Ypage 102).
198Display messages (vehicles without steering wheel buttons)
On-board computer and displays