
Problems wit
hPARKTRONIC Problem Possible causes/consequences and
M Solutions
Only the red segments
in the PARKTRONIC
warning display
sare lit.
Yo ua lso hear awarning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds and
the indicator lamp in
the PARKTRONIC but-
ton lights up. PARKTRONIC has malfunctioned and has switched itself off.
X
If problems persist, have PARKTRONIC checked at aqualified
specialist workshop. Only the red segments
in the PARKTRONIC
warning display
sare lit.
PARKTRONIC is deacti-
vate dafter approx-
imatel y20seconds. The PARKTRONI
Csensors are dirt yorthere is interference.
X Clean the PARKTRONI Csensors (Y page 267).
X Switch the ignition back on. The problem may be caused by an exter
nalsource of radio or
ultrasoun dwaves.
X See if PARKTRONIC functions in adifferent location. Parking Guidance
Important safet ynotes Parking Guidance is an electronic parking aid
with ultrasound. Ultrasound is used to meas-
ure the road on both sides of the vehicle. A
suitable parking space is indicated by the
parking symbol. You receiv esteering instruc-
tions when parking. You may also use PARK-
TRONIC (Y page 174). G
Risk of accident
Parking Guidance is merely an aid and may
recommen dparking spaces that are not suit-
able for parking. For example, these might be
spaces where parking is prohibited ,drive-
ways, unsuitabl esurfaces, etc.
Parking Guidance measures the parking
space as you drive past it. Any later changes
to the parking space are not taken into
account. For instance, this may be the case when the vehicle parked in front of or behind
the space changes its position or when an
obstacle is moved into the parking space.
Parking Guidance does not relieve you of the
responsibility for paying attention. If you rely
solely on Parking Guidance, you could cause
an accident and injure yourself and others.
You are always responsible for safety and
must continue to pay attention to your imme-
diate surroundings when parking and
manoeuvring.
G
Risk of accident
Objects located above the height range of
Parking Guidance will not be detected when
the parking space is measured. Thes eare not
take ninto account whe nthe parkin gproce-
dure is calculated, e.g .overhanging loads ,tail
sections or loading ramps of good svehicles.
In some circumstances, Parking Guidance Driving systems
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lar, this may be the case if the vehicles are
drivin gatthe edge of their lan enearest your
vehicle. Due to the nature of the system,
warnings may be issued in err or when driving
clos etoc rashb arriers or similar solid lane
borders.
The two sensors for Blind Spot Assis tare
integrate dinto the sides of the rear bumper.
Make sure that the bumpe risfree from dirt,
ice or slus haround th esensors. For example,
the rada rsensors must not be covered by
cycle racks or overhanging loads. Followin ga
severe impac torinthe even tofdamage to
the bumpers, have the function of the radar
sensors checked at aqualified specialist
workshop, e.g. aMercedes-Ben zService
Cent re.B lind Spot Assist may otherwise not
work properly.
Information and warning display :
Yellow indicator lamp/red warnin glamp
When Blind Spot Assis tisa ctivated, indicator
lamp :in the exterior mirrors lights up in
yellow at speed sofupto30km/ h.At speeds
above 30 km/h, the indicator lamp goe sout
and Blind Spo tAssist is operational.
If av ehicle is detected within the monitoring
range of Blin dSpot Assist at speeds above
30 km/h, warning lamp :on the corre-
sponding side lights up red. This warning is
always issued when avehicle enter sthe blind
spot monitoring range from behind or from
the side. When you overtak eavehicle, the
warning only occurs if the difference in speed
is less than 12 km/h. The yellow indicator lam
pgoes out after
reverse gear is engaged. In this event, Blind
Spot Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light. G
Risk of accident
Blind Spot Assist is not active at speeds below
30 km/h, and the indicator lamps in the exte-
rio rm irror sare yel low.Vehicles in the moni-
toring range are then not indicated.
Alway spay attention to traffic conditions and
your surroundings. Otherwise ,you may fai lto
recognise dangers in time ,cause an accident
and injure yoursel fand others.
Collisio nwarning If
av ehicle is detected in the mon itoring range
of Blind Spot Assis tand you switch on the turn
signal, adouble warnin gtone sounds. Red
warnin glamp :flashes .Ifthe tur nsignal
remains on, detected vehicles are indicated
by the flashing of red warnin glamp :.T here
ar enof urther warning tones.
Switching on Blind Spot Assist X
Make sure that the radar senso rsystem
(Y page 208) and Blind Spot Assist
(Y page 203) are activated in the on-board
computer.
X Turn the key to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors
ligh tupinr ed for about 1. 5seconds and
then tur nyellow.
Trailer towing When you attach
atrailer, yo umust ensure
that the electrical connection has been estab-
lished correctly. You can check the trailer
lighting to make sure. Blind Spot Assis tis
then deactivated .The indicator lam pint he
exterior mirror lights up yellow and the
Active Blin dSpot Assist currently Drivin
gsystems
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X
Press the =or; button on the steer-
ing wheel to select the Assist.menu.
X Press the 9or: button to select
Distance display.
X Press a.
The DI STRONIC PLUS distance display
(Y page 166) appears in the multifunction
display.
Deactivating/activating ESP ®G
Risk of accident
If the ä warning lamp in the instrument
cluster flashes ,proceed as follows:
R do not deactivate ESP ®
under any circum-
stances.
R onl ydepress the accelerator pedal as far as
necessary when pullin gaway.
R adapt your driving style to suit the prevail-
ing road and weather conditions.
Otherwise, the vehicle could skid.
ESP ®
cannot reduce the risk of an accident if
you drive too fast. ESP ®
cannot override the
laws of physics.
Further information about ESP ®
(Y page 57).
X Start the engine.
X Press the =or; button on the steer-
ing wheel to select the Assist.menu.
X Press 9or: to select ESP.
X Press a.
X To deactivate: pressaagain.
The å warning lamp in the instrument
cluster comes on. G
Risk of accident
If the å warning lamp in the instrument
cluster lights up when the engine is running,
ESP ®
is deactivated or is unavailable due to a
malfunction. The risk that your vehicle may
start to skid then increases in certain situa-
tions.
Always adapt your driving style to the prevail-
ing road and weather conditions. X
To activate: pressaagain.
The å warning lamp in the instrument
cluster goes out.
Activating/deactivating the PRE-SAFE ®
Brake This function is only availabl
ewith DIS-
TRONIC PLUS.
X Press the =or; button on the steer-
ing wheel to select the Assist.menu.
X Press 9or: to select PRE-SAFE
Brake.
X Press a.
The curren tselection is displayed.
X To activate/deac tivate: press a
again.
When PRE-SAFE ®
Brak e(Ypage 59 )isacti-
vated ,the multifunction displa yshows the
Ä symbol.
Activating/deactiva ting Attention
Assist X
Press the =or; button on the steer-
ing wheel to select the Assist.menu.
X Press the 9or: button to select
Attent ionA sst.
X Press a.
Th ec urren tselection is displayed.
X To activate/deac tivate: press a
again.
When ATTENTION ASSI ST (Ypage 18 1)is
activated, the Àsymbol appears in the
multifunction display when the ignition is on.
Activating/deactivating Blind Spot
Assist You can use the
BlindSpot Asst. function
to activate or deactivate Blind Spot Assist
(Y page 184). Menus an
dsubmenus
203On-board computer and displays
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Displa
ymessages Possible causes/consequences and
M Solutions
Ch
ilds eat in wrong
position
See Own‐
er'
sM an‐
ual G
Risk of in
jury
Vehicles with automatic child seat recognition on the front-
passenge rseat: the child seat is positioned incorrectly.
X Fit the child seat in the correc tposition. G
Risk of injury
Vehicles with automatic child seat recognition on the front-
passenger seat: the automatic child seat recognition sensor
is faulty.
X Visit aqualified specialist workshop. 6 Restraint
sys. mal‐
function
Consult
workshop
G
Risk of injury
There is amalfunction in the SRS (Supplemental Restraint
System). The 6warning lamp also lights up in the instru-
ment cluster.
X Visit aqualified specialist workshop. 6 Front
left mal‐
function
Consult
workshop
or
Front
righ
tmal‐
function
Consult
workshop G
Ris
kofi njury
SRS has malfunctioned at the front on the left or right. The
6 warning lamp also lights up in the instrumen tcluster.
X Visit aqualified specialist workshop. Display mess
ages
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Displa
ymessages Possible causes/consequences and
M Solutions
6 Re
ar left
malfunc‐
tio nC on‐
sul tw ork‐
shop
or
Rear
right mal‐
function
Consult
workshop G
Risk of in
jury
SRS has malfunctioned at the rear on the left or right .The
6 warning lamp also lights up in th einstrument clu ster.
X Visit aqualified specialist workshop. 6 Left
windowbag
malfunc‐
tion Con‐
sult work‐
shop
or
Right
windowbag
malfunc‐
tion Con‐
sult work‐
shop G
Risk of injury
There is amalfunction in the left-han dand/or right-hand
windowbag. The 6warnin glamp also lights up in the
instrumen tcluster.
X Visit aqualified specialist workshop. 214
Display messagesOn-board computer and displays
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Displa
ymessages Possible causes/consequences and
M Solutions
J Ch
eck
brake
fluid
level G
Risk of accident
There is insufficient brake fluid in the brake fluid reservoir. In
addition, the red Jwarning lamp in the instrumen tcluster
lights up and awarning tone sounds.
X Pul lover and stop th evehicle safely as soon as possible,
paying attention to road and traffic conditions. Do not con-
tinu edriving under any circumst ances.
X Engag ethe parkin gbrake.
X Cons ultaq ualified specialist worksho p.
X Do not top up the brake fluid. Thi swilln ot rectif ythe prob-
lem. # Check
brak
ewear Th
eb rake pa ds/linings have reach edthei rwearlimit.
X Visit aqualified specialist workshop. Lights
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Displa
ymessages Possible causes/consequences and
M Solutions
b Le
ft cor‐
nering
light
or
Right cor‐
nering
light Th
eleft or right-hand cornering light is faulty.
X Chec kwhether you ar epermitted to change the bulb your-
self (Y page 113).
or
X Visit aqualified specialist workshop. b Left
dipped
beam
or
Right
dipped
beam The left or right-hand dipped-bea
mheadlam pisfaulty.
X Check whethe ryou ar epermitted to change the bulb your-
self (Y page 11 3).
or
X Visit aqualified specialist workshop. Display messages
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Displa
ymessages Possible causes/consequences and
M Solutions
b In
tell.
Light Sys‐
tem inop‐
erative Th
eI ntel ligen tLight Syste misfaulty. The lights remain avail-
able without the Intelligent Light System.
X Visit aqualified special istworkshop. b Malfunc‐
tion See
Owner's
Manual The exterior lighting is faulty.
X
Visit aqualified special istworkshop. Vehicles with trailer tow hitch:
afuse may have blown.
X Check the fuses (Y page 293).
X If necessary, replace the blown fuse. Observe the warning
notes.
If the displa ymessage continues to be displayed:
X Visit aqualified special istworkshop. b AUTO
lights
inopera‐
tive The light sensor is faulty. Dipped-beam headlamps are
switched on.
X
Switch off the daytime driving lights in the on-board com-
puter (Y page 205).
X Switch the lights on and off using the light switch.
X Visit aqualified special istworkshop. b Switch
of
fl ights Th
elights are still switched on when you leave the vehicle. A
warnin gtone also sounds.
X Tur nthe light switc htoc. Display messages
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Warnin
gand indicator lamps in th einstrument cluster Applying th
ebrakes Problem Possible causes/consequence
sand M Solutions
J
The red brak
esystem
warning lamp comes on
while the vehicl eis
moving .Awarning tone
also so unds. Yo
ua re driving wit hthe parking brake enga ged.
X Releas ethe parking brake.
The warning lamp goes out and the warning ton eceases. J
The red brak
esystem
warning lamp comes on
while the engine is run-
ning. Awarning tone
also so unds. G
Risk of accident
There is insufficient brake fluid in the fluid reservoir.
X Pul lover and stop th evehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv ing
unde rany circumstances.
X Engag ethe parking brake.
X Consult aqualified specialist worksho pimmediatel y.
X Obser ve theadditional display messages in the multifunction
display.
Do not top up the brak efluid. This wil lnot rectif ythe prob lem. Seat be
lt Problem Possible causes/consequence
sand M Solutions
7
The red seat belt warn-
ing lamp lights up for
six seconds after the
engine starts
39
. The seat belt warning lamp reminds the driver and fron
tpassenger
to fasten their seat belts.
X Fasten your seat belt (Y page 40).7
Af
ters tarting the
engine ,the red seat
belt warnin glamp lights
up. In addition, awarn-
ing tone sounds for up
to 6s econds. 39 G
Risk of inju
ry
The driver' sseat belt is not fastened.
X Fasten your seat belt (Y page 40).
The warning ton eceases. 39
Only for cer tain countries. 236
Warnin
gand indicator lam psin th einstrument clusterOn-boa rdcomputer and displays
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