The brightness of the indicator/warning lamps
is adjusted automatically according to the
brightness of the ambient light.
Collision warning
If a vehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, a double warning tone
sounds once. Red warning lamp:flashes. If
the turn signal remains on, detected vehicles
are indicated by the flashing of red warning
lamp :. There are no further warning tones.
Activating/deactivating Blind Spot Assist
iBlind Spot Assist is activated when you
switch on the ignition.
XTurn the SmartKey to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors light
up red for approximately 1.5 seconds and
then turn yellow.
XTo deactivate: press thekbutton in the
center console (Ypage 36).
The yellow indicator lamp in exterior mirror :
first flashes and then lights up continuously.
XTo activate: press thekbutton in the
center console again (Ypage 36).
The yellow indicator lamp in exterior mirror :
flashes initially. If you exceed 20 mph
(30 km/h) while driving, the yellow indicator
lamp in exterior mirror :goes out.
Towing a trailer
If you attach a trailer, make sure that you have
correctly established the electrical connection.
This can be accomplished by checking the trailer
lighting. Blind Spot Assist is deactivated as a
result. The indicator lamp in the exterior mirrors
lights up yellow.
On vehicles with steering wheel buttons, the
Blind Spot Assist Deactivated
message
also appears in the display.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in front of
your vehicle by means of a camera at the top of
the windshield. Lane Keeping Assist detects
lane markings on the road and warns you before
you leave your lane unintentionally.
:Lane Keeping Assist camera
Lane Keeping Assist supports you from speeds
of approximately 40 mph(60 km/h).
If Lane Keeping Assist detects lane markings,
the à indicator lamp in the instrument clus-
ter lights up green. Lane Keeping Assist is opera-
tional.
Important safety 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 a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist.
GWARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
a risk 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 accident
nor override the laws of physics. 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, braking in
good time and for staying in your lane.
Driving systems143
Driving and parking
Z
Lane Keeping Assist does not keep your vehicle
in its lane.
The system may be impaired or may not function
if:
Rif the vehicle is incorrectly loaded
(Ypage 208)
Rthere is poor visibility, e.g. due to insufficient
illumination of the 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 a sticker, in the vicin-
ity of the camera
Rno, or several, unclear lane markings are pres-
ent for one lane, e.g. in a construction 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 highly variable shade conditions on
the road
A warning may be given if a front wheel passes
over a lane marking. In addition, a warning tone
sounds and the Ãindicator lamp in the
instrument cluster flashes red.
Activating/deactivating Lane Keeping
Assist
Lane Keeping Assist is automatically activated
when you start the engine.
XTo deactivate: press thejbutton in the
center console (Ypage 36).
On vehicles without steering wheel but-
tons:
OFF
flashes briefly in the display and the Ã
indicator lamp in the instrument cluster
flashes yellow and then lights up continu-
ously.
On vehicles with steering wheel buttons:
The Lane
Keep.AssistDeactivatedmes-
sage appears in the display and the Ã
indicator lamp in the instrument cluster
flashes yellow and then lights up continu-
ously. Lane Keeping Assist is deactivated.
XTo activate:
press thejbutton in the
center console again (Ypage 36).
On vehicles without steering wheel but-
tons:
on
flashes briefly in the display and the Ã
indicator lamp in the instrument cluster goes
out. If a lane marking is detected, the Ã
indicator lamp lights up green.
On vehicles with steering wheel buttons:
The Lane Keep. Assist Activated
mes-
sage appears in the display and the Ã
indicator lamp in the instrument cluster goes
out. If a lane marking is detected, the Ã
indicator lamp lights up green.
Lane Keeping Assist is activated.
A Lane Keeping Assist warning is suppressed if:
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
Ryou have set the turn signal and a lane change is detected. In this case, the warnings are
suppressed for a certain period of time.
Ryou accelerate hard, e.g. kickdown on vehi-
cles with an automatic transmission.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lane quickly.
Ryou cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
Lane Keeping Assist warns you earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a freeway.
Rthe system recognizes solid lane markings.
Warnings are given later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
All-wheel drive
Important safety notes
!Never tow the vehicle with one axle raised.
This may damage the transfer case. Damage
of this sort is not covered by the Mercedes-
Benz Limited Warranty. All wheels must
144Driving systems
Driving and parking
Redialing
The on-board computer saves the last names or
numbers dialed in the redial memory.
Using the steering wheel buttons
XUse theVorU button to select the TELmenu.
The display shows the mobile phone opera-
tional readiness symbol.
XPress the6button.
The display shows the most recently dialed
numbers or names in the redial memory.
XPress the 9or: button to select the
desired name or number.
XTo start dialing: press the6button.
The on-board computer dials the correspond-
ing phone number.
When a connection is established, the name
of the other person and/or the call duration
appear in the display.
or
XTo exit the redial memory: press the~
button.
Display messages
Notes on display messages
Important safety notes
GWARNING
No information will be displayed if either the
instrument cluster or the display is inopera-
tive.
As a result, you will not be able to see warning
and indicator lamps or information about the
driving conditions, such as speed or outside
temperature. Driving characteristics may be
impaired. Adjust your driving style and vehicle
speed accordingly.
Contact a qualified specialist workshop
immediately.
GWARNING
If service work is not carried out correctly, the operating safety of your vehicle may be affec-
ted. This could cause you to lose control of
your vehicle and cause an accident. More-
over, the safety systems may no longer be
able to protect you or others as they are
designed to do.
Always have service work carried out at a
qualified specialist workshop.
iIf you turn the key to position 2in the igni-
tion, a display check is performed. All warning
and indicator lamps (except the turn signal
indicator lamps) and the display are activa-
ted. Before starting the journey, check that
the warning and indicator lamps are operating
correctly.
Vehicles without steering wheel but-
tons
Warnings, malfunctions or additional informa-
tion may also be shown in the display. The fol-
lowing tables show all the display messages. A
warning tone sounds with certain display mes-
sages.
Vehicles with steering wheel buttons
The on-board computer shows warnings, mal-
functions or additional information in the dis-
play. A warning tone sounds with certain display
messages. Display messages of a high priority
are shown in red.
Please respond in accordance with the display
messages and follow the additional notes in this Operator's Manual.
You can hide low-priority display messages by
pressing the V,U,9or: button
on the steering wheel or the 9reset button.
You cannot hide display messages of the highest
priority. These messages will continue to be
shown in the display until their cause has been
eliminated.
The on-board computer stores certain display
messages in the message memory
(
Ypage 173).
Message memory
The on-board computer only records and shows
malfunctions and warnings from certain sys-
tems. Therefore, make sure that your vehicle is
safe to use. You could otherwise cause an acci-
dent by driving an unsafe vehicle.
Display messages173
On-board computer and displays
Z
Lights
Display messagesPossible causes/consequences andMSolutions
b
Low beam left
The left-hand low beam is faulty3.
XHalogen headlamps:replace the bulb as soon as possible
(Ypage 88).
XBi-Xenon headlamps: consult a qualified specialist workshop as
soon as possible.
b
Low beam right
The right-hand low-beam headlamp is faulty3.
XHalogen headlamps: replace the bulb as soon as possible
(Ypage 88).
XBi-Xenon headlamps: consult a qualified specialist workshop as
soon as possible.
b
Cornering lt. left
The left-hand cornering light is faulty3.
XReplace the bulb as soon as possible (Ypage 88).
b
Cornering lt. right
The right-hand cornering light is faulty3.
XReplace the bulb as soon as possible (Ypage 88).
b
Lights on auto‐matic. Remove key
The automatic headlamp feature is active: the light switch is in the
à position and you have forgotten to remove the key.
XRemove the key from the ignition lock.
b
Turn signal left
The left-hand turn signal is faulty.
XChange the bulb as soon as possible in the front (Ypage 89) or rear
(Ypage 90) indicator lamp.
b
Turn signal right
The right-hand turn signal is faulty.
XChange the bulb as soon as possible in the front (Ypage 89) or rear
(Ypage 90) indicator lamp.
b
Brake lamp left
The left brake lamp is faulty3.
XReplace the bulb as soon as possible (Ypage 90).
b
Brake lamp right
The right brake lamp is faulty3.
XReplace the bulb as soon as possible (Ypage 90).
b
Third brake lamp
The high-mounted brake lamp is faulty3. This display message will only
appear if all LEDs have failed.
XConsult a qualified specialized workshop as soon as possible.
b
High beam left
The left high-beam headlamp is faulty3.
XReplace the bulb as soon as possible (Ypage 88).
3Depending on the equipment, the bulb-failure indicator may not befeatured for any lamps other than the turn
signals.
182Display messages
On-board computer and displays
Display messagesPossible causes/consequences andMSolutions
b
Highbea mright
The right high beam headlamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 88).
b
Licenseplate lam p
Alicense plat elamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 91).
b
Switch off lights
You haveforgotte nto switch off th elights when leaving th evehicle.
XTurn th eligh tswitch to $.
b
Foglampfront lef t
The left-han dfron tfog lamp is faulty.3
XHav eth ebulb replace das soo nas possibl eat aqualified specialist
workshop .
b
Foglampfront right
The right-hand fron tfog lamp is fault y3.
XHaveth ebulb replace das soo nas possibl eat aqualified specialist
workshop .
b
Rearfoglam p
The rear fog lamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 90).
b
Parkinglam pfrontlef t
The fron tlef tparking lamp/standin glamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 88).
b
Parkinglam pfrontright
The fron tright parking lamp/standin glamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 88).
b
Reverselam p
Abackup lamp is fault y3.
XReplaceth ebulb as soo nas possibl e (Ypage 90).
b
Taillam plef t
The left-han dtai llamp is faulty.3
XReplac eth ebulb as soo nas possibl e (Ypage 90).
b
Taillam pright
The right-hand tai llamp is faulty.3
XReplac eth ebulb as soo nas possibl e (Ypage 90).
b
Marker lam p
Aperimete rlamp is faulty.3
XReplac eth ebulb as soo nas possibl e (Ypage 92).
3Dependin gon th eequipment, th ebulb-failure indicato rmay no tbe featured for any lamp sother than th etur n
signals.
Display messages18 3
On-board computer and displays
Z
ProblemPossible causes/consequences andMSolutions
h
US vehicles only:
The yellow tire
pressure monitor
warning lamp
flashes for
60 seconds and
then remains lit.The tire pressure monitor has malfunctioned.
XHave the tire pressure monitor and the wheels checked at a quali-
fied specialist workshop.
:
The yellow water
separator indica-
tor lamp is lit
when the ignition
is switched on.The water that has collected in the water separator of the fuel filter has
reached the maximum level.
XDrain the water separator (Ypage 220).
m
The yellow water
separator indica-
tor lamp is lit
when the ignition
is switched on.The fuel filter is dirty.
XHave the fuel filter element replaced as soon as possible at a quali-
fied specialist workshop.
¦The yellow
washer fluid level
indicator lamp for
the windshield
washer/head-
lamp cleaning
system is lit after
the engine is star-
ted or while the
vehicle is in
motion.The water level is too low.
XAdd washer fluid (Ypage 220).
7The red seat belt
warning lamp
lights up continu-
ously or flashes. A
warning tone may
also sound.The warning lamp is to remind you to fasten your seat belt.
XFasten seat belt (Ypage 43).
bWhen the Smart-
Key is turned to
position 2in the
ignition lock, the
yellow bulb warn-
ing lamp lights up.One of the exterior lighting bulbs is faulty, with the exception of the
perimeter lamps and the trailer lighting.
iDepending on the equipment, the bulb failure indicator can fail for
all lamps with the exception of the turn signal lamps.
XReplace the faulty bulb as soon as possible (Ypage 87).
1 The yellow "door
open" indicator
lamp is lit while
driving.The vehicle is moving without all doors or the hood being closed.
XClose the doors or hood.
198Indicator and warning lamps in the instrument cluster
On-board computer and displays
!Do not fold the windshield wipers away from
the windshield unless the hood is closed. Oth-
erwise, you could damage the hood.
!Do not pull the wiper blade. Otherwise, the
wiper blade could be damaged.
!Do not clean wiper blades too often and do
not rub them too hard. Otherwise, the graph-
ite coating could be damaged. This could
cause wiper noise.
!Hold the wiper arm securely when folding
back. The windshield could be damaged if the
wiper arm smacks against it suddenly.
XTurn the SmartKey to position 0in the ignition
lock or remove the SmartKey.
XFold the windshield wiper arms away from the
windshield until you feel them engage.
XCarefully clean the wiper blades with a damp
cloth.
XFold back the wiper arms before switching on
the ignition.
Cleaning the exterior lighting
!Only use cleaning agents or cleaning cloths
which are suitable for plastic light lenses.
Unsuitable cleaning agents or cleaning cloths
could scratch or damage the plastic light len- ses.
XClean the plastic covers of the exterior light-
ing with a damp sponge and a mild cleaning
agent, e.g. car shampoo for Sprinter vehicles,
or with cleaning cloths.
Cleaning the mirror turn signal
!Only use cleaning agents or cleaning cloths
that are suitable for plastic lenses. Unsuitable
cleaning agents or cleaning cloths could
scratch or damage the plastic lenses of the
mirror turn signals.
XClean the plastic lenses of the mirror turn sig-
nals in the exterior mirror housing using a wet
sponge and mild cleaning agent, e.g. car
shampoo or cleaning cloths.
Cleaning the sensors
!Do not use dry, coarse or hard cloths and do
not scrub. You will otherwise scratch or dam-
age the sensors. If you clean the sensors with a power washer
or steam cleaner, observe the information
provided by the manufacturer regarding the
distance to be maintained between the vehi-
cle and the nozzle of the power washer.
PARKTRONIC sensors (example: front bumper, left
side of vehicle)
XClean all sensors :in the front and rear
bumpers with water, shampoo and a soft
cloth.
Cleaning the rear view camera
!Do not use dry, coarse or hard cloths and do
not scrub. You could otherwise scratch or
damage the lens of the reversing camera.
When cleaning the vehicle with a high-pres-
sure or steam cleaner, observe a minimum
distance of 1.6 ft (50 cm) to the rear view
camera. Do not aim directly at the rear view
camera. You could otherwise damage the rear
view camera.
Rear view camera in the middle of the roof above
the high-mounted brake lamp
:
Camera lens
XClean camera lens :with clean water and a
soft cloth.
232Care
Maintenance and care