2018 MERCEDES-BENZ METRIS park assist

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
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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.
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s
Driving an d parking

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.
GWARNING
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 Park- ing Assist parking procedure.
!If unavoidable, you should drive over obsta-
cles such as curbs slowly and not at a sharp
angle. Otherwise, you may damage the
wheels or tires.
Active Parking Assist may also display spaces
not suitable for parking, e.g.:
Rin a zone where parking or stopping is pro-
hibited
Rin front of driveways or entrances and exits
Ron unsuitable surfaces
Parking tips:
Ron narrow roads, drive as closely as possible
past the parking space.
Rparking spaces that are littered or overgrown
might be identified or measured incorrectly.
Rparking spaces that are partially occupied by
trailer drawbars might not be identified as
such or be measured incorrectly.
Rsnowfall or heavy rain may lead to a parking
space being measured inaccurately.
Rwhen transporting a load which protrudes
from your vehicle, you should not use Active
Parking Assist.
Rnever use Active Parking Assist when snow
chains are installed.
Ralways ensure that the tire pressure is correct
This has a direct influence on the parking
characteristics of the vehicle.
Rif you mount w heels with a different wheel
size, this will have a direct influence on the
parking result.
Rif you mount tires from another manufacturer,
this may have an influence on the parking
result.
Rif you drive slowly past the parking space, a
better parking result is achieved.
Rpay attention to the PARKTRONIC warning
messages (Ypage 155) during the parking
procedure.
Ryou 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:
Rparallel or at right angles to the direction of
travel.
Ron straight roads, not bends.
Ron the same level as the road, e.g. not on the
pavement.
Detecting parking spaces
GWARNING
If there are objects above the detection range:
RActive Park Assist may steer too early
Rthe vehicle may not stop in front of these
objects
You may cause a collision as a result. 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 height 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 cal-
culated, e.g. overhanging loads, overhangs or
truck loading ramps.
For further information on the detection range
(
Ypage 154).
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Active Parking Assist does not assist you park-
ing in spaces at right angles to the direction of
travel if:
Rtwo parking spaces are located directly next
to one another
Rthe parking space is directly next to a low
obstacle such as a low curb
Ryou 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:
Rthe parking space is on a curb
Rthe system reads the parking space as being
blocked, for example by foliage or grass pav-
ing blocks
Rthe area is too small for the vehicle to maneu-
ver into
Rthe parking space is bordered by an obstacle,
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 activated
automatically when driving forwards. The sys-
tem is operational at speeds of up to approx-
imately 22 mph (35 km/h). While in operation,
the system independently locates and meas-
ures parking spaces on both sides of the vehicle.
Active Parking Assist will only detect parking
spaces:
Rparallel or at right angles to the direction of
travel
Rthat are parallel to the direction of travel and are at least 59 in (1.5 m) wide
Rthat are parallel to the direction of travel and
at least 40 in (1.0 m) longer than your vehicle
Rthat are at right angles to the direction of
travel and at least 40 in (1.0 m) widerthan
your vehicle
iNote 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 sym-
bol ;is shown as a status display in the header.
The syste m d
etects and differentiates between
parking spaces which are parallel or at right
angles to the direction of travel. When a parking
space is detected, an arrow appears next to
parking symbol ;to indicate which side the
parking space is on. The parking space is dis-
played 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 parking
spaces on the driver's side are only displayed 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
GWARNING
If you leave the driver's seat when the vehicle is only being braked by Active Parking Assist,
the vehicle could roll away if:
Rthere is a malfunction in the system or in
the voltage supply.
Rthe electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with.
Rthe battery is disconnected.
Rthe vehicle is accelerated, e.g. by a vehicle
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 park- ing process. You are responsible for braking in
good time.
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Driving an d parking

XBring the vehicle safely to a stop when the
parking symbol shows the desired parking
space in the instrument cluster.
XShift the transmission to positionR.
The display shows the Start
ParkAssist?Yes: OKNo:%message and the location
of the parking space.
XTo cancel the process: press the%but-
ton on the steering wheel or drive off.
or
XTo park using active parking assistance:
press the abutton on the steering wheel.
The display shows the Park Assist
Active: Accelerate and BrakeObs.Surroundingsmessage.
XLet go of the steering wheel.
XReverse the vehicle, being ready to brake at
all times. Exit the parking space slowly and do
not drive faster than 6 mph (10 km/h). Oth-
erwise parking assistance is canceled and
Active Parking Assist is stopped.
Active Parking Assist brakes the vehicle to a
standstill when the vehicle approaches the
rear border of the parking space.
Maneuvering may be required in tight parking
spaces. The display shows the Park Assist
Active: Select DObs. Surroundingsmes-
sage.
XWhile the vehicle is stationary, shift the trans-
mission to position D.
Active Parking Assist immediately steers in
the other direction. The display shows the
Park Assist Active: Accelerate and
BrakeObs. Surroundingsmessage.
iYou will achieve the best results by waiting
for the steering procedure to complete before
pulling away.
XDrive forwards and be ready to brake at all
times.
Active Parking Assist brakes the vehicle to a
standstill.
The display shows the Park
AssistActive:Select RObs. Surroundingsmessage.
As soon as the parking procedure is complete,
the Park Assist Finished
message appears
in the display and a tone sounds. The parking
assistance function of Active Parking Assist is
stopped. The vehicle is parked and kept station-
ary without the driver having to depress the
brake pedal. The braking effect is canceled
when you depress the accelerator pedal. Active Parking Assist no longer supports you
with steering interventions and brake applica-
tions. Once active parking assistance has been
stopped, you must steer and brake again your-
self. PARKTRONIC is still available.
Parking tips:
RThe way your vehicle is positioned in the park-
ing space after parking is dependent on vari-
ous factors. These include the position and
shape of the vehicles parked in front and
behind it and the conditions of the location. It
may be the case that Active Parking Assist
guides you too far into a parking space, or not
far enough into it. In some cases, it may also
lead you across or onto the curb. In this case, cancel the active parking assistance.
RYou can also select transmission position D
prematurely. The vehicle redirects and does
not drive as far into the parking space. If you
change direction too early, parking assis-
tance is canceled and Active Parking Assist is
stopped. It is then not possible to achieve a
sensible parking position from the current
position.
Exiting a parking space
In order that Active Parking Assist can assist you
when exiting the parking space:
Rthe border of the parking space must be high enough at the front and the rear. A curb stone
is too small, for example.
Rthe border of the parking space must not be
too wide. Your vehicle can be maneuvered
into a position at a maximum of 45° to the
starting position in the parking space.
Ra maneuvering distance of at least 3.3 ft
(1.0 m) must be available .
Active Parking Assist can only assist you with
exiting a parking space if you have parked the
vehicle parallel to the direction of travel using
Active Parking Assist.
If PARKTRONIC detects obstacles, Active Park-
ing Assist brakes automatically when exiting
from the parking space. You are responsible for braking in good time.
XStart the engine.
XSwitch on the turn signal in the direction in
which you are pulling away.
XShift the transmission to position hork.
The display shows the StartParkAssist?Yes: OKNo:%message.
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Z

XTo cancel the process:press the%but-
ton on the steering wheel or drive off.
or
XTo exit the parking space using active
parking assistance: press theabutton
on the steering wheel.
The display shows the Park Assist
Active: Accelerate and BrakeObs.Surroundingsmessage.
XLet go of the steering wheel.
XPull away, being ready to brake at all times.
Exit the parking space slowly and do not drive
faster than 6 mph (10 km/h). Otherwise park-
ing assistance is canceled and Active Parking
Assist is stopped.
Active Parking Assist brakes the vehicle to a
standstill when the vehicle approaches a bor-
der of the parking space.
XWhile the vehicle is stationary, shift the trans-
mission to position hork as required or
according to the message.
Active Parking Assist immediately steers in
the other direction. The display shows the
Park Assist Active: Accelerate and
BrakeObs. Surroundingsmessage.
iYou will achieve the best results by waiting
for the steering procedure to complete before
pulling away.
If you back up after activation, the steering
wheel is moved to the straight-ahead posi-
tion.
XDrive forwards and reverse as prompted by
the PARKTRONIC warning displays, several
times if necessary.
Once you have exited the parking space com-
pletely:
RThe display shows the Park Assist Fin‐ishedmessage.
RA tone sounds.
RThe steering wheel is moved to the straight-
ahead position
The parking assistance function of Active Park-
ing Assist is stopped. You will then have to steer
and merge into traffic on your own.
PARKTRONIC is still available.
You can take over the steering before the vehi-
cle has exited the parking space completely.
This is useful, for example when you recognize
that it is already possible to pull out of the park-
ing space.
Canceling active parking assistance
XStop the movement of the steering wheel or
steer yourself.
or
XPress the fbutton and deactivate
PARKTRONIC (Ypage 155).
Parking assistance is canceled immediately
and Active Parking Assist is stopped. The dis-
play shows the Park
AssistCanceledmes-
sage.
Active parking assistance is canceled automat-
ically if:
Ryou apply the parking brake.
Rparking using Active Parking Assist is no lon-
ger possible.
Ryou are driving faster than 6 mph (10 km/h).
Ra wheel spins and ESP®intervenes or fails.
The ÷ warning lamp in the instrument
cluster then lights up.
Ryou unfasten your seat belt.
Ryou open a door or the tailgate/rear door.
Ryou shift the automatic transmission to posi-
tion P.
A warning tone sounds, the parking symbol in
the display goes out and the Park Assist
Canceledmessage appears.
Once active Parking Assist has been canceled,
you must steer and brake again yourself.
If a system malfunction occurs, vehicles are
automatically braked down to a standstill. To
continue driving, you must depress the acceler-
ator pedal again.
Rear view camera
General notes
On vehicles with a tailgate, the rear view camera
is next to the tailgate handle (Ypage 269).
On vehicles with rear doors, the rear view cam-
era is in the top of the license plate molding
(
Ypage 269).
The rear view camera is a visual parking aid. It
shows you the area behind the vehicle in the
audio display.
The area behind the vehicle is displayed in a
mirrored fashion, as in the rear-view mirror or
the exterior mirrors. The guide lines displayed
assist you in backing up.
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XTo activate:make sure that the key is in
position 2in the ignition lock.
XShift the transmission to position k.
On vehicles with a tailgate, the rear view cam-
era 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.
XTo 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.
XTo switch off: shift the transmission to posi-
tion iorh.
The dynamic guide lines are hidden and after
about 15 seconds the rear view camera
switches itself off.
or
XDrive forwards more than about 30 ft (10 m).
or
XDrive forwards faster than 6 mph (10 km/h) .
or
XShift the automatic transmission to position
j.
In vehicles wit
h 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 informa-
tion on active parking assistance under "Active
Parking Assist“ (
Ypage 156).
Messages in the multimedia system dis-
play
: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 steering
wheel, vehicle width including the exterior
mirrors (static)
=Yellow guide line for the vehicle width
including the exterior mirrors, at the current
steering angle (dynamic)
?Yellow lane marking the course the tires will
take at the current steering angle (dynamic)
AYellow guide line at a distance of approx-
imately 3 ft (1.0 m) from the rear of the vehi-
cle
BRed guide line at a distance of approximately
12 in (0.30 m) from the rear of the vehicle
CBumper
DVehicle center axis (locating aid)
The guide lines are shown when the transmis-
sion is in position k.
The distance specifications only apply to
objects that are at ground level.
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PARKTRONIC warning displays for vehicles with
Active Parking Assist
E
Front warning displays
FVehicle symbol as PARKTRONIC measure-
ment operational readiness indicator
GRear warning displays
On vehicles with Active Parking Assist, the
PARKTRONIC is activated and operational,
(
Ypage 155), the camera image shows vehicle
icon F. When the PARKTRONIC warning dis-
plays go on, warning displays Eand Glight up
accordingly as red or yellow brackets around
vehicle icon F.
"Reverse parking" function
Backing up straight into a parking space
without turning the steering wheel
:White guide line without turning the steering
wheel, vehicle width including the exterior
mirrors (static)
;Yellow guide line for the vehicle width
including the exterior mirrors, at the current
steering angle (dynamic)
=Yellow guide line at a distance of approx-
imately 3 ft (1.0 m) from the rear of the vehi-
cle
?Red guide line at a distance of approximately
12 in (0.30 m)from the rear of the vehicle
XMake sure that the rear view camera is
switched on (Ypage 161).
The lane and the guide lines are shown.
XWith the help of white guide line :, check
whether the vehicle will fit into the parking
space.
XUsing the white line :as a guide, carefully
reverse until you reach the end position.
Red guide line ?is then at the end of the
parking space. The vehicle is almost parallel
in the parking space.
Backing up into a perpendicular parking
space with the steering wheel at an angle
:Parking space marking
;Yellow guide line for the vehicle width
including the exterior mirrors, at the current
steering angle (dynamic)
XAfter driving past the parking space, stop the
vehicle, paying attention to road and traffic
conditions.
XMake sure that the rear view camera is
switched on (Ypage 161).
The lane and the guide lines are shown.
XWhile the vehicle is at a standstill, turn the
steering wheel in the direction of the parking
space until yellow guide line ;reaches park-
ing space marking :.
XMaintain the steering angle and reverse care-
fully.
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