2018 MERCEDES-BENZ CLA warning

i After at ime ,t he electri cp ar king brake
secures the vehicl ea nd relieves the service
brake.
Whe nt he HOLD functio ni sa ctivated ,t he trans-
mission is automaticall ys hifted to position ]
if: R
the driver's sea tb el tisn ot fastene da nd the
driver's door is open. R
the engine is switched off, unless it is auto-
maticall ys wi tched off by the ECO start/stop
function.
The electri cp ar king brake secures the vehicle
automaticall yift he HOLD functio ni sa ctivated
when the vehicl eiss tationar ya nd:R
as ys tem malfunctio no ccurs.R
the powe rs uppl yisi nsufficient.
Start-off Assist (except Mercedes-
AM Gv eh icles)
Important safety notes
G WARNING
If yo uu se start-off assist, individual wheels
ma ys tart to spi na nd the vehicl em ay skid. If
ESP ®
is deactivated ,t her eisag reate rd an ger
of skidding and having an accident. Make sure
tha tnop er sons or obstacle sa re in the vicinity
of the vehicle.
Start-off assist enables optimu ma cceleration
from as tandstill .F or this, as ui tabl yh ig h-grip
roa ds ur face is required ,a lo ng with the tire sa nd
vehicl eb ei ng in prope ro pe rating condition.
Do not activate start-off assist on public roads.
Observ et he safety notes on driving safety sys-
tems ( Y
page 61).
Be sure to rea dt he safety notes and information
on ESP ®
( Y
page 64).
Activatin gs tart-off assistX
Deactivate ESP ®
( Y
page 185).X
Turn the steering whee ltot he straight-ahead
position. X
Depres st he brake peda lh ar dw it hy ou rl ef t
foo ta nd kee pitd ep ressed.X
Shift the transmission to position D . X
Use the DYNAMIC SELEC Tb ut ton to select
the S drive progra m( Y
page 128).X
Quickly depress the accelerator peda lf ully.X
Take your foo to ff the brake, bu tk ee pt he
accelerator peda ld ep ressed.
The vehicl ep ulls away at maximu ma cceler-
ation.
i Activate ESP ®
as soo na st he acceleration
proces sh as ended .E SP ®
will otherwise not
be able to stabilize the vehicl eift he vehicle
starts to ski doraw heel starts to spin.
Canceling start-off assist X
Remove your foo tf rom the accelerator pedal.X
Reactivate ESP ®
.
RAC ES TART (Mercedes-AM Gv eh i-
cles)
Important safety notes
i RAC ES TAR Tm us tn ot be used on normal
roads. RAC ES TAR Tm us to nl ybea ctivated
and used on dedicate dr oa dc ircuits, outside
of public roa du se .
i RAC ES TAR Tiso nl ya vailable in
Mercedes ‑ AM Gv ehicles.
G WARNING
If yo uu se RAC ES TART, individual tire sm ay
start to spi na nd the vehicl ec ould skid.
Depending on the selecte dE SP ®
mode, there
is an increased ris kofs kidding and having an
accident. Make sure tha tnop er sons, animals
or obstacle sa re withi nr an ge of the vehicle.
RAC ES TAR Te nables optima la cceleratio nf rom
as tanding start. For this, as ui tabl yh ig h-grip
roa ds ur face is required and the vehicl ea nd tires
must be in goo dw or king order.
i Observ et he safety notes on driving safety
system s( Y
page 61).
Be sure to rea dt he safety notes and informa-
tio nonE SP ®
( Y
page 64).158
Driving systems
Driving an dp arking

Range
C
Detection rang eoff ront sensorsD
Detection rang eofr ea rs ensors
Front sensors
Center Approx. 40 in (approx.
100 cm)
Corners Approx. 24 in (approx.
60 cm)
Rear sensors
Center Approx. 48 in (approx.
120 cm)
Corners Approx. 32 in (approx.
80 cm)
Minimum distance
Center Approx. 8i n( ap prox. 20 cm)
Corners Approx. 6i n( ap prox. 15 cm)
If there is an obstacl ew it hin this range, the rel-
evant warning display sl ig ht up and aw ar ning
tone sounds. If the distance falls below the min-
imum, the distance may no longer be shown. Warning displays
C
Segments on the left-hand sid eoft he vehi-
cle D
Segments on the right-hand sid eoft he vehi-
cle

becomes .W hen the minimum distance is
reached, you hear ac ontinuous warning tone.
Deactivating or activating Parking
Assist PARKTRONIC
C
Indicator lampD
Deactivates or activates Parkin gA ssist
PARKTRONIC If indicator lamp C is lit, Parkin gA ssist
PARKTRONI Ci sd eactivated.
i Parkin gA ssist PARKTRONI Cisa utomati-
cally activated when you turn the SmartKey to
position 2 in the ignition lock.
Problems with Parking Assist PARKTRONIC Problem
Possible causes/consequences and P Solutions
Only the red segments in
the Parkin gA ssist
PARKTRONI Cw arning
displays are lit. You also
hear aw arning ton ef or
approximately two sec-
onds.
Parkin gA ssist
PARKTRONI Ci st hen
deactivated and the indi-
cator lamp on the
PARKTRONI Cb utton
lights up. Parkin gA ssist PARKTRONI Ch as malfunctioned and has been deacti-
vated. X
If problems persist ,h ave Parkin gA ssist PARKTRONI Cc hecked at a
qualified specialist workshop.
Only the red segments in
the Parkin gA ssist
PARKTRONI Cw arning
displays are lit. Parking
Assist PARKTRONI Ci s
then deactivated. The Parkin gA ssist PARKTRONI Cs ensor sa re dirty or ther eisi nter-
ference. X
Clean the Parkin gA ssist PARKTRONI Cs ensor s( Y
page 265).X
Switc ht he ignition back on.
The problem may be caused by an external source of radio or ultra-
sound waves. X
Check to see if Parkin gA ssist PARKTRONI Cw orks at ad ifferent
location. Driving systems 163
Driving and parking Z

Parking Pilot
General notes Parking Pilot is an electronic parking aid with
ultrasound. It measures the road on both sides
of the vehicle. Ap arking symbol indicates as uit-
able parking space. Active steering intervention
and brake application can assist you during
parking and when exiting ap arking space. Park-
ing Assist PARKTRONIC is also available
( Y
page 161).
Important safety notes Parking Pilot is only an aid. It is not ar eplace-
ment for your attention to your immediate sur-
roundings. You are always responsible for safe
maneuvering, parking and exiting ap arking
space. Make sure that no persons, animals or
object sa re in the maneuvering range.
When Parking Assist PARKTRONIC is deactiva-
ted, Parking Pilot is also unavailable.
G WARNING
While parking or pulling out of ap arking
space, the vehicle swings out and can drive
onto areas of the oncomin gl ane. This could
result in ac ollision with another road user.
There is ar isk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Parking Pilot
parking procedure.
! If unavoidable ,y ou should drive over obsta-
cles such as curbs slowly and not at as harp
angle. Otherwise, you may damage the
wheels or tires.
Parking Pilot may also display spaces not suita-
ble for parking, e.g.: R
where parking or stopping is prohibited R
in front of driveways or entrances and exits R
on unsuitable surfaces
Parking tips: R
On narrow roads, drive as close to the parking
space as possible. R
Parking spaces that are littered or overgrown
might be identified or measured incorrectly. R
Parking spaces that are partially occupied by
trailer drawbars might not be identified as
such or be measured incorrectly. R
Snowfall or heavy rain may lead to ap arking
space being measured inaccurately. R
Pay attention to the warning messages of
Parking Pilot PARKTRONIC during the parking
procedure ( Y
page 162). R
You can intervene to correct the steering pro-
cedure at any time. Parking Pilot will then be
canceled. R
When transporting al oad that protrudes from
your vehicle, you must not use Parking Pilot. R
Never use Parking Pilot when snow chains are
mounted. R
Make sure that the tire pressures are always
correct .T his has ad irect influence on the
parking characteristics of the vehicle.
Use Parking Pilot for parking spaces that are: R
that are paralle loratr ight-angles to the direc-
tion of travel R
on straight roads, not bends R
on the same level as the road, e.g. not on the
pavement
Detecting parking spaces Object sl ocated above the detection range of
Parking Pilot will not be detected when the park-
ing space is measured. These are not taken into
account when the parking procedure is calcula-
ted, e.g. overhanging loads, truck overhangs or
loading ramps. Parking Pilot may therefore
guide you into the parking space too early.
Parking Pilot does not assist you parking in
spaces perpendicular to the direction of travel if: R
two parking spaces are located directly next
to one another R
the parking space is directly next to al ow
obstacle such as al ow curbR
you forward-park
Parking Pilot does not assist you parking in
spaces paralle lorp erpendicular to the direction
of travel if: R
the parking space is on ac urbR
the system reads the parking space as being
blocked, for example by foliage or grass pav-
ing blocks R
the area is too small for the vehicle to maneu-
ver into R
the parking space is bordered by an obstacle,
e.g. at ree, ap ost or at railer
For further information on the detection range
( Y
page 161).164
Driving systems
Driving and parking

G WARNING
If there are objects above the detection range: R
Parking Pilot may steer in too early R
the vehicl em ay not stop in front of these
objects
You may caus eac ollision as ar esult. There is
ar isk of an accident.
If objects are located above the detection
range, stop and deactivate Parking Pilot.
C
Detected parking space on the leftD
Parking symbol

X
To exit ap arking spac eu sing Parking
Pilot: press the v button on the multi-
functio ns teering wheel.
The Parkin gP ilot Active Accelerate
and Brake Observ eS urroundings mes-
sage appears in the multifunctio nd is play.X
Let go of the multifunctio ns teering wheel.X
Pull away ,b ei ng ready to brake at al lt imes. Do
not exceed am ax imu ms peed of approx-
imatel y6m ph (10 km/h )w he ne xiting ap ar k-
ing space. Otherwise, Parking Pilo ti sc an-
celed immediately. X
Depending on the message or as required,
shift the transmission to position [ or ^ .
Parking Pilo ti mmediatel ys teers in the other
direction. The Parkin gP ilot Active
Accelerat ea nd Brake Observ eS ur‐
roundings message appears in the multi-
functio nd is play.
i Yo uw il la chieve the best results by waiting
for the steering procedur etoc omplete before
pulling away.
If yo ub ac ku pa fte ra ctivation, the steering
whee lism ove dtot he straight-ahea dp osi-
tion. X
Driv ef orward sa nd reverse as prompte db y
the Parking Assist PARKTRONIC warning dis-
plays, severa lt ime sifn ecessary.
Once yo uh av ee xited the parking space com-
pletely, the steering whee lism ove dtot he
straight-ahea dp osition. Yo uh ea rat one and the
Parking Pilot Finished message appears in
the multifunctio nd is play .Y ou will then have to
stee ra nd merge into traffic on your own. Park-
ing Assist PARKTRONIC is stil la vailable .Y ou can
take ove rt he steering before the vehicl eh as
exited the parking space completely. Thi si s
useful, for exampl ew he ny ou recognize tha titi s
already possibl etop ul lo ut of the parking space.
Canceling Parking Pilot X
Stop the movement of the multifunction
steering whee lors tee ry ours elf.
Parking Pilo ti sc ancele di mmediately. The
Parking Pilot Canceled message appears
in the multifunctio nd is play.
or X
Press the PARKTRONIC button ( Y
page 163).
Parking Assist PARKTRONIC is switched off
and Parking Pilo ti si mmediatel yc anceled.
The Parkin gP ilot Canceled message
appears in the multifunctio nd is play. Parking Pilo ti sc ancele da ut omaticall yw he n:R
the electri cp ar king brake is engaged R
transmission position ] is selectedR
parking using Parking Pilo ti snol on ger pos-
sible R
yo ua re driving faster tha n6 mph (10 km/h)R
aw heel spins, ESP ®
intervene sorf ails .I n
such cases the

Any unauthorized modification to thi sd ev ice
could voi dt he user’ sa ut hority to operate the
equipment.
Radar sensors The rada rs ensors for Blind Spo tA ssist ar ei nte-
grated into the rea rb um per. Make sure tha tt he
bumpers ar ef re ef rom dirt, ice or slush. The
sensors must not be covered ,f or exampl eb y
cycle racks or overhanging loads. Following a
severe impact or in the event of damage to the
bumpers, have the functio noft he rada rs ensors
checked at aq uali fied specialist workshop.
Blind Spo tA ssist ma ynol on ge rw or kp roperly.
Monitorin gr ang eoft he sensorsIn particular, the detection of obstacle sc an be
impaired if: R
ther eisd ir tont he sensors or anything else
covering the sensors R
ther eisp oo rv isibility ,e .g .d ue to fog ,h eavy
rain or snow R
an arrow vehicl et raveling in front, e.g .a
motorbike or bicycle R
the roa dh as ver yw id el an esR
the roa dh as narrow lanesR
yo ua re not driving in the middl eoft he laneR
ther ea re barriers or othe rr oa db ou ndaries
Vehicles in the monitoring range ar et hen not
indicated.
Blind Spo tA ssist monitors the area up to 10 ft
(3 m) behind your vehicl ea nd directl yn ext to it.
If the lanes ar en arrow ,v ehicles driving in the
lane beyond the lane next to your vehicl em a y be
indicated ,e specially if the vehicles ar en ot driv-
ing in the middl eoft hei rl an e. Thi sm ay be the
cas eift he vehicles ar ed riving on the inne rs id e
of thei rl an e.
Due to the nature of the system: R
warning sm ay be issued in error when driving
close to crash barriers or similar solid lane
borders. R
warning sm ay be interrupte dw he ny ou are
driving alongsid ep ar ticularly long vehicles,
such as trucks, for ap rolonge dt ime. Warning display
C
Warning display
Blind Spo tA ssist is not active at speed sb elow
approximatel y20m ph (30 km/h). Vehicles in
the monitoring range ar et hen not indicated.
Whe nB lind Spo tA ssist is activated ,i ndicator
lamp C in the exterio rm irrors lights up yellow
at speed sofupto20m ph (30 km/h). At speeds
above 20 mph (30 km/h), the indicator lamp
goe so ut and Blind Spo tA ssist is operational.
If av ehicl eisd et ecte dw it hi nt he blind spot
monitoring range at speed sa bo ve 20 mph
(30 km/h), warning lamp C on the correspond-
ing side lights up red .T hi sw ar ning is always
emitted when av ehicl ee nters the blind spot
monitoring range from behind or from the side.
Whe ny ou overtake av ehicle, the warning only
occurs if the difference in speed is less than
7m ph (12 km/h).
The yellow indicator lamp goe so ut if reverse
gear is engaged .Int hi se vent, Blind Spo tA ssist
is no longe ra ctive.
The brightness of the indicator/warning lamps
is adjusted automaticall ya ccording to the ambi-
ent light.
Collisio nw ar ning
If av ehicl eisd et ecte dint he monitoring range of
Blind Spo tA ssist and yo us wi tch on the corre-
sponding turn signal, ad ouble warning tone
sounds. Re dw ar ning lamp C flashes. If the turn
signa lr emains on, vehi cles detecte da re i ndica-
ted by the flashing of red warning lamp C .
There ar enof ur the rw ar ning tones.Driving systems 173
Driving an dp arking Z

Switching on Blind Spot Assist X
Make sure that Blind Spot Assist is activated
in the on-board computer ( Y
page 186).X
Turn the SmartKey to position H in the igni-
tion lock.
Warning lamps C in the exterior mirrors light
up red for approximately 1.5 seconds and
then turn yellow.
Lane Keeping Assist General notes
Lane Keeping Assist monitor st he area in front of
your vehicle by means of multifunction cam-
era C which is attached behind the top of the
windshield. Lane Keeping Assist detect sl ane
markings on the road and can warn you before
you leave your lane unintentionally.
This function is available in the range between
40 mph and 120 mph (60 km/h and 200 km/h).
Aw arning may be given if af ront wheel passes
over al ane marking. It will warn you by means of
intermittent vibration in the steering wheel for
up to 1.5 seconds.
Important safety notes
G WARNING
Lane Keeping Assist cannot always clearly
detect lane markings.
In such cases, Lane Keeping Assist can: R
give an unnecessary warning R
not give aw arning
There is ar isk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Lane Keeping Assist alerts you. G WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
ar isk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-
ing Assist.
If you fail to adapt your driving style, Lane Keep-
ing Assist can neither reduce the risk of an acci-
dent nor override the laws of physics. Lane
Keeping Assist cannot take into account the
road, traffic and weather conditions. Lane Keep-
ing Assist is merely an aid. You are responsible
for the distance to the vehicle in front ,f or vehi-
cle speed, for braking in good time and for stay-
ing in your lane.
The Lane Keeping Assist does not keep the vehi-
cle in the lane.
The system may be impaired or may not function
if: R
there is poor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain,
fog or spray R
there is glare, e.g. from oncomin gt raffic, the
sun or reflection from other vehicles (e.g. if
the road surface is wet) R
the windshield is dirty, fogged up, damaged or
covered, for instanc ebyas ticker, in the vicin-
ity of the camera R
there are no or several unclear lane markings
for one lane, e.g. roadworks R
the lane markings are worn away ,d ark or cov-
ered up, e.g. by dirt or snow R
the distance to the vehicle in front is too short
and thus the lane markings cannot be detec-
ted R
the lane markings change quickly, e.g. lanes
branch off, cross one another or merge R
the road is narrow and winding R
there are highly variable shade condition so n
the roadway
Switching on Lane Keeping Assist X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard or Adaptive ( Y
page 174).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphic are shown174
Driving systems
Driving and parking