2016 MERCEDES-BENZ METRIS brake

If you change wheel size, make sure they corre-
spond to the correct wheel size category
(
Ypage 267). If the category is changed without
recoding the control units in the vehicle,t he
functioning of the distance warning feature may
be impaired. COLLISION PREVENTION ASSIST
may then detect amalfunction and switch itself
off.
Operation
XTo activate/deactivate: activate or deacti-
vate the distance warning function in the on-
board computer (
Ypage 184).
If the distance warning function of the COL-
LISION PREVENTION ASSISTisa ctivated, the
display shows the Äsymbol:
Rin the header
Rin the Status Overviewof the Assist.menu (Ypage 183)
At speedsuptoa pprox20m ph (30 km/h) the
display in vehiclesw ith Active Parking Assist
first shows the ístatus indicator. Only from
as peed of abou t20m ph (30 km/h )does the
display show the Äsymbolinstead of the
í status indicator.
The distance warning function can help you to
minimize the risk of afront-end collision with a
vehicle ahea dorreduce the effects of such a
collision. With the help of the rada rsensor sys-
tem, the distance warning function can detect
obstacles that are in the path of you rvehicle for
an extended period of time. If the distance warn-
ing function detects that there is arisk of acol-
lision, you wil lbewarned visually and, where
necessary ,acoustically.W ithout yourinterven-
tion, the distance warning function cannot pre-
vent acollision.
The distance warning function issues awarning
at speeds:
Rfrom abou t4mph (7 km/h) if you approach a
vehicle traveling in front or astationary vehi-
cle very quickly. The ·warning lamp in the
instrument cluster flashe sand an intermittent
warning tone also sounds.
At speedsuptoa bout45mph (70 km/h), the
system also detects stationary obstacles ,for
example stationary or parked vehicles.
XBrake immediately until the distance to the
obstacle increases and the risk of acollision
has passed.
or
XTake evasive action, provideditiss afe to do
so.
Adaptive Brake Assist
General notes
Adaptive Brake Assist evaluates the traffic sit-
uatio nwith the help of the rada rsensor system
and can detect obstacle swhich have been in
you rvehicle's path for an extended period of
time. From speedsa bove4mph (7 km/h), Adap-
tive Brake Assist aid syou in braking during haz-
ardou ssituations.
Up to aspeed of approximately 125 mph
(200 km/h), Adaptive Brake Assist is capable of
reacting to moving obstacle sthat have already
been detected as such at least once over the
period of observation.
Important safety notes
GWARNING
Adaptive Brake Assist does not react:
Rto peopleora nimals
Rto oncoming vehicles
Rto crossing traffic
Rto stationary obstacles
Rwhen cornering
As aresult, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Alway spay careful attention to the traffic sit-
uatio nand be ready to brake.
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
Rintervene unnecessarily
Rnot intervene
There is arisk of an accident.
144Driving systems
Driving and parking

Alwayspaycarefu lattentio ntothe traffic sit-
uatio nand be ready to brake. Terminate the
interventio ninanon-critica ldriving situation.
In particular, the detection of obstacle scan be
impaired in the cas eof:
Rdirt on the sensors or anything else covering
the sensors
Rsnow or heavy rain
Rinterference from othe rradar sources
Rstrong rada rreflections, for example, in park-
ing garages
Ran arrow vehicl etraveling in front, e.g .a
motorbike
Rav ehicl etraveling in front on adifferent line
Due to the nature of the system ,particularly
complicate dbutnon-critica ldriving conditions
maya lsoc ause Adaptive Brake Assist to inter-
vene.
If yo ufailtoa dapt your driving style ,Adaptive
Brake Assist can neither reduce the ris kofacci-
dent nor override the laws of physics. Adaptive
Brake Assist canno ttake into account road,
weather or traffic conditions. Adaptive Brake
Assist is onlyana id.Y ou arer esponsibl efor the
distance to the vehicl einfront, for vehicle
speed ,braking in goo dtime and for staying in
your lane.
Following damage to the front end of the vehicle,
have the configuratio nand operatio nofthe
rada rsensor checked at aquali fied specialist
workshop.T hisa lsoa pplies to collisions at slow
speed swhe
re the rei
snov isible damage to the
front of the vehicle.
If yo uchange whee lsize, make sure they corre-
spond to the correct whee lsizec ategory
(
Ypage 267). If the categor yischangedw ithout
recoding the contro lunits in the vehicle, the
functioning of Adaptive Brake Assist mayb e
impaired .COL LISION PREVENTION ASSIST may
then detect amalfunctio nand switch itsel foff.
If Adaptive Brake Assist is not availabl edueto a
malfunctio ninthe rada rsensor system ,the
brake system remains availabl ewithf ullb rake
boosting effect and BAS.
Operation
With the hel pofthe rada rsensor system ,Adap-
tive Brake Assist can detect obstacle sthath ave
been in the path of your vehicl efor an extended
perio doft ime.Adaptive Brake Assist does not
react to stationar yobstacles. If Adaptive Brake Assist detects
ariskofc ollision with avehicle
traveling in front or with astationar yobstacle,
the system calculate sthe braking forc eneces-
sary to avoidt hiscollision. If yo uapply the
brakes forcefully, Adaptive Brake Assist will
automaticall yincrease the braking forc etoa
level suitabl efor the traffic conditions.
XBrake unti lthe distance to the obstacle
increases and the ris kofacollision passes.
ABS
prevents the wheels from locking.
The brakes functio nasusual againif:
Ryour elease the brake pedal
Rther eisnol ongera ny dangerofac ollision
Rno obstacle is detecte dinfront of your vehicle
Braking assistance is then ended.
Blind SpotA ssist
General notes
Blind Spo tAssist monitors the area soneither
side of the vehicl ethata renot visible to the
driver with two lateral, rear-facing rada rsensors
in the bumper. It supports yo ufrom speed sof
approximately20m ph (30 km/h).Awarning
display in the exterio rmirrors draws your atten-
tio ntov ehicles detecte dinthe monitore darea.
If yo uthen switch on the corresponding turn
signaltoc hange lane, yo uwilla lsor eceive an
optica land audibl ecollision warning.
Important safety notes
GWARNING
Blind Spo tAssist does not react to:
Rvehicles overtake ntoo closel yonthe side,
placing them in the blind spo tarea
Rvehicles which approach with alarge speed
differential and overtake your vehicle
As aresult, Blind Spo tAssist mayn ot give
warning sinsuchs ituations. There is arisko f
an accident.
Alway sobserve the traffic conditions care-
fully, and maintain asafel atera ldistance.
Blind Spo tAssist is onlyana id.Itm ayfailto
detect som evehicles and is no substitute for
attentive driving .Alway sensure thatt hereis
Driving systems145
Driving an dparking
Z

The intensity of warning lamps:depends on
the brightness of the ambient light and is con-
trolled automatically.
Collision warning
If av ehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, adouble warning tone
sounds once. The warning lamp in the corre-
sponding exterior mirror flashes. If the turn sig-
nal remains on, detected vehicles are indicated
by the flashing of the warning lamp in the exte-
rior mirror. There are no further warning tones.
Activating Blind Spot Assist
XMake sure that Blind Spot Assist is activated
in the on-board computer (Ypage 184).
XTurn the key to position 2in the ignition lock.
The warning lamps in the exterior mirrors light
up for approximately 1.5 seconds.
Status indicators in the status overview submenu
If Blind Spot Assist is activated, the display
shows symbol :in the StatusOverviewsub-
menu of the on-board computer (Ypage 183). If
you are driving faster than 20 mph (30 km/h) ,
the symbo lalsos hows rada rwaves between the
two vehicles ;.Blind Spo tAssist is thenr eady
for use.
Towin gatrailer
If youattach atrailer, make sure thaty ouhave
correctl yestablishe dthe electrical connection.
Thi scan be accomplishe dbychecking the trailer
lighting. Blind Spo tAssist is thend eactivated
and the Blind Spo tAssist Currently
Unavail. See Operator' sManualmessage
appear sinthe display.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in front of
your vehicl ebymeans of camera :which is
mounted at the top of the windshield. Lane
Keeping Assist detects lane markings on the
roa dand can warn yo ubefor ey ou leav eyour
lane unintentionally.
This functio nisa vailable in the range between
40 mph (60 km/h )and 125 mph (20 0km/h).
Aw arning maybeg iven if afront whee lpasses
ove ralanem arking. It will warn yo ubymeans of
intermittent vibratio nthroug hthe steering
whee lfor up to 1.5 second s.
Importan tsafety notes
GWARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot give awarning
There is ariskofana ccident.
Alway spayparticula rattention to the traffic
situation and stay in lane, in particula rif
warned by Lane Keeping Assist.
GWARNING
The Lane Keeping Assist warning doe snot
return the vehicl etothe original lane. There is
ar iskofana ccident.
Yo us houl dalway ssteer, brake or accelerate
yourself, in particula rifwarned by Lane Keep-
ing Assist.
Driving systems147
Driving and parking
Z

If you fail to adapt yourdriving style, Lane Keep-
ing Assist can neither reduce the risk of accident
nor override the law sofphysics. Lane Keeping
Assist cannot take into account road, weather or
traffic conditions. Lane Keeping Assist is only an aid .You are responsible for the distance to the
vehicle in front, for vehicle speed,b raking in
good time and for staying in you rlane.
Lane Keeping Assist does not keep you rvehicle
in its lane.
The system may be impaired or may not function
if:
Rthere is poor visibility, e.g. due to insufficient
illuminatio nofthe road, or due to snow, rain,
fog or spray
Rthere is glare ,e.g. from oncoming traffic, the
sun or reflection from other vehicles( e.g. if
the road surface is wet)
Rthe windshield is dirty, fogged up, damaged or
covered, for instance by asticker, in the vicin-
ity of the camera
Rno, or several ,unclea rlane markings are pres-
ent for one lane, e.g. in aconstruction area
Rthe lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too small
and the lane markings thus cannot be detec-
ted
Rthe lane markings change quickly, e.g. lanes
branch off, cross one another or merge
Rthe road is narrow and winding
Rthere are highlyv ariable shade conditions on
the road
Deactivating and activating Lane Keep-
ing Assist
XPress the Çbutton.
If the indicator lamp in the button lights up
and the display shows the Çsymbo linthe status area
,Lane Keeping Assist is switched
on but not ready for use.
If you drive at speedsa bove 40 mph
(60 km/h) and lane markings are detected,
the display shows the highlighted Çsym-
bol in the status area when Lane Keeping
Assist is activated. Lane Keeping Assist is
then ready for use.
Status indicators in the status overview submenu
The display in the Status Overviewsubmenu
of the on-board computer also shows the status
of Lane Keeping Assist (
Ypage 183). If Lane
Keeping Assist is activated but not ready for use,
the display shows the boundary lines in the sym-
bol as dashed :.IfLane Keeping Assist is ready
for use, the boundary lines in the symbo lare
shown as solid lines ;.
Setting the sensitivity of Lane Keeping
Assist
XIn theAssist.menu on the on-board com-
puter, select the Lane Keeping Assist:
function (Ypage 184).
XSelectStandardorAdaptive.
In the setting Standard
,now arning vibration
occurs if:
Ryou operate the turn signal in the correspond-
ing direction. In this event, the warnings are
suppressed for acertain period of time.
Rad riving safety system, such as ABS, BAS or
ESP®,i ntervenes or performs acontrol
action.
When Adaptive
is selected, there is also no
warning vibratio nwhen:
Ryou accelerate hard, e.g. kickdown.
Rbrake sharply
Ryou steer actively ,e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou cut the corner on asharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
148Driving systems
Driving and parking

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 183)
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 avehicle
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 detectst iredness or increasing
lapses in concentration, the warning Atten‐
tion Assist: TakeaBreak!orAttent.Asst: Take Break!is shown in the display.
An additional warning tone sounds.
XIf necessary, take abreak.
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
ab reak 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 detectst ypical 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-
uallya nd 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 D,Nor 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,
parking and pulling away.W hen maneuvering,
parking and pulling away,m ake sure that there
are no persons, animals or object sinthe maneu-
vering area.
!Pay particular attention to obstacles above
or below the sensors when parking, such as
flower pots or trailer towbars. PARKTRONIC
does not recognizes uch objectswhen 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 atruck's
compressed-air brakes, an automatic car
wash or apneumatic 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 adetachable trailer coupling if it is no
longer required. PARKTRONIC measures the
minimum detection range to an obstacle from
the bumper, not the ball coupling.
150Driving systems
Driving and parking

Problems with PARKTRONIC
ProblemPossible causes/consequences andMSolutions
Only the red segments in
the PARKTRONIC warn-
ing displaysare lit.
Aw arning tone also
sounds for approx-
imately 2seconds.
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 aqualified spe-
cialist workshop.
The PARKTRONIC warn-
ing displaysi mplausible
distances.
For example, all the seg-
mentsm ay be lit even
though there is no obsta-
cle present.The PARKTRONIC sensors are dirty or iced up.
XClean the PARKTRONIC sensors (Ypage 257).
XTurn the key to position 2again in the ignition lock.
The license plate or other parts attached near the sensors may not be
secured correctly.
XCheck the license plate and attachmentp arts near the sensors for
correct seating.
An external radio or ultrasonic source may be causing interference.
XCheck PARKTRONIC functions in adifferent 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 visuallya nd audibly
the distance between your vehicle and an
object .Todot his, PARKTRONIC uses the ultra-
sonic sensors of the Active Parking Assist
(
Ypage 150).
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.M
ake
sure that no persons, animals or object sare in
the maneuvering range.
When you deactivate PARKTRONIC, Active Park-
ing Assist will also be deactivated.
For vehicles with atrailer coupling installed, the
minimum length for parking spaces will be
slightly increased.
If you have attached atrailer 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 aparking
space, the vehicle swings out and can drive
onto areas of the oncomingl ane. This could
result in acollision with another road user.
There is arisk of an accident.
154Driving systems
Driving and parking

:Detected parkingspace on the left
;Parkin gsym bol
=Detected parkin gspace on the right
If the driver's sea tbeltisf astened and al ldoo rs
ar ec losed ,Activ eParkin gA ssist is activated
automaticall ywhend rivin gforwards .The sys-
tem is operational at speeds of up to approx-
imatel y22m ph (35 km/h). Whil einoperation,
the system independentl yloc ate sand meas-
ures parkin gspacesonb oths ides of the vehicle.
Activ eParkin gA ssist will onl ydetect parking
spaces:
Rparallel or at right angle stothe direction of
travel.
Rthata reparallel to the direction of travel and
ar eatl east59 in (1.5 m) wide
Rthatareparallel to the direction of travel and
at leas t40in( 1.0m) lo nger thany ourvehicle
Rthata re at right angle stothe direction of
travel and at leas t40in( 1.0 m) wider than
your vehicle
iNote thatA ctiveParking Assist cannot
measure the length of aparking space if it is at
right angle stothe direction of travel .You will
nee dtoj udge yourself whether your vehicle
will fit into the parking space.
When the vehicl eisdrivingats peeds of up to
approximately 20 mph (30 km/h), parking sym-
bol ;is shown as astatus dis
pla y
int he header.
The systemd etects and differentiate sbetween
parking space swhich ar eparalle loratr ight
angle stothe direction of travel .Whenap arking
space is detected, an arrow appear snext to
parking symbol ;to indicate which side the
parking space is on. The parking space is dis-
played whil eyou ared rivin gpastita nd unti lyou
ar ea pproximately 50 ft (15 m) awayfromi t.
Active Parkin gAssist display sparking spaces on
the passengers ideass tandard. The parking
spaces on the driver's side ar eonlyd isplayed if
yo uo perate the turn signalont he driver's side.
Whe nparking on the driver's side ,you must
operate the turn signalu ntilyou have started active parking assistance by pressing the
a
button on the steering wheel.
Parking
GWARNING
If yo uleave the driver's sea twhent he vehicle
is onlyb eing braked by Active Parking Assist,
the vehicl ecould rol lawa yif:
Rther eisam alfunctio ninthe system or in
the voltag esupply.
Rthe electrical system in the engine com-
partment, the battery or the fuses ar etam-
pered with.
Rthe battery is disconnected.
Rthe vehicl eisaccelerated,e .g.b yav ehicle
occupant.
There is ariskofana ccident.
Before leaving the driver's seat, always secure the vehicl eagain st rolling away.
If PARKTRONICd etects obstacles, Active Park-
ing Assist brakes automaticall yduring the park-
ing process. Yo uareresponsibl efor braking in
goo dtime.
XBring the vehicl esafelytoas top when the
parking symbo lshows the desired parking
space in the instrument cluster.
XShift the transmission to position R.
The display shows the Start
ParkAssist?Yes:OKNo:% message and the location
of the parking space.
XTo cance lthe process: press the%but-
ton on the steering whee lordrive off.
or
XTo park using active parking assistance:
press the abutton on the steering wheel.
The display shows the ParkAssist
Active :Accelerat eand BrakeObs.Surroundingsmessage.
XLet go of the steering wheel.
XReverse the vehicle, being ready to brake at
allt imes. Exit the parking space slowly and do
not drive faster than6m ph (10 km/h). Oth-
erwis eparking assistance is cancele dand
Active Parking Assist is stopped.
Active Parking Assist brakes the vehicl etoa
standstill when the vehicl eapproaches the
rea rborde roft he parking space.
156Driving systems
Driving an dparking

Maneuvering may be required in tight parking
spaces. The display shows thePark 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 atone 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 conditionsoft he location. It
may be the case that Active Parking Assist
guides you too far into aparking 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 preselect transmission position
D.T he vehicle redirects and does not drive as
far into the parking space. If you change direc-
tion too early, parking assistance is canceled
and Active Parking Assist is stopped. It is then
not possible to achieve asensible parking
position from the current position.
Exiting aparking space
In order that Active Parking Assist can support
you when you exit the parking space:
Rthe border of the parking space must be high
enough at the front and the rear. Acurb is too
small, for example.
Rthe border of the parking space must not be
too wide. Your vehicle can be maneuvered
into aposition at amaximum of 45° to the
startin gposition in the parking space.
Ram aneuvering distance of at least 3.3 ft
(1.0 m) must be available.
Active Parking Assist can only assist you with
exiting aparking 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 Dor R.
The display shows the Start
ParkAssist?Yes: OKNo:%message.
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 6mph (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 abor-
der of the parking space.
XWhile the vehicle is stationary, shift the trans-
mission to position Dor Ras 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.
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