Page 256 of 376

256 Practical hintsWhat to do if …
What to do if …Lamps in instrument clusterGeneral information:
If a bulb in the instrument cluster fails to
light up during the bulb self-check when turning the SmartKey in the starter switch
to position2, have it checked and replaced
if necessary.Problem
Possible cause
Suggested solution
v
The yellow ESP warning lamp
lights up while driving.
The ESP is deactivated. Risk of accident!
Adapt your speed and driving to the prevail-
ing road conditions.
Turn the ESP back on (
page 75).
If the ESP cannot be turned back on, have
the system checked at an authorized
Mercedes-Benz Center as soon as possi-
ble.
v
The yellow ESP warning lamp
flashes while driving.
The ESP or traction control has come into
operation because of detected traction loss
in at least one tire.
When driving off apply as little throttle
as possible.
While driving ease up on the accelera-
tor.
Adapt your speed and driving to the
prevailing road and weather condi-
tions.
Do not deactivate the ESP.
Exceptions: (
page 75).
Failure to follow these instructions
increases the risk of accidents.
Page 261 of 376

261 Practical hints
What to do if …
Messages in the display
The control system shows warning and
malfunction messages in the multifunction
display.
Certain warning and malfunction messag-
es are accompanied by an audible signal.
Address these messages accordingly and
follow the additional instructions given in
this Operator’s Manual.
Selecting the malfunction memory menu in
the control system (
page 118) displays
both cleared and uncleared messages.
High-priority messages appear in the
multifunction display in red color.
Certain messages of high priority cannot
be cleared from the multifunction display
using the reset knob.
Other messages of high priority and
messages of less immediate priority can
be cleared from the multifunction display
using the reset knob (page 22) and are
then stored in the malfunction message
memory (
page 118).On the pages that follow, you will find a
compilation of all the messages that may
appear in the display.
Warning!
G
All categories of messages contain impor-
tant information which should be taken note
of and, where a malfunction is indicated, ad-
dressed as soon as possible at an autho-
rized Mercedes-Benz Center.
Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property dam-
age or personal injury.Warning!
G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
Contact your nearest authorized
Mercedes-Benz Center.
iTurning the key in starter switch to
position2, causes all lamps as well as
the multifunction display to come on.
Ensure that they are all in working
order before starting your journey.
Page 272 of 376

272 Practical hintsWhat to do if …Display
Possible cause
Suggested solution
A
RESERVE FUEL
VISIT FILLING STATION!
The fuel level has dropped below the
reserve mark.
Refuel at the next gas station
(page 233).
J
DOOR OPEN!
You are attempting to drive with one or
more doors open.
Close the doors.
Y
HOOD OPEN!
You are driving with the hood open.
Close the hood (
page 235).
Ê
TRUNK OPEN!
This message will appear whenever the
trunk lid is open.
Close the trunk lid.
I
REPLACE KEY
VISIT WORKSHOP!
No additional code available for
SmartKey.
Visit an authorized Mercedes-Benz
Center as soon as possible.
AUTOM. LIGHT ON
REMOVE KEY!
You have forgotten to remove the key.
Remove the key from the starter
switch.
.
LAMP SENSOR
VISIT WORKSHOP!
The lamp sensor is malfunctioning. The
headlamps switch on automatically.
In the control system, set lamp
operation to manual (
page 119).
Switch on headlamps using the
exterior lamp switch.
LOW BEAM, L
CHECK LAMPS!
The left low beam lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
LOW BEAM, R
CHECK LAMPS!
The right low beam lamp is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
DISPLAY DEFECTIVE
VISIT WORKSHOP!
The display for the lamps or the system is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Page 275 of 376

275 Practical hints
What to do if …
.
TAIL LAMP, L
CHECK LAMPS!
SUBSTITUTE LAMP ON!
The left tail lamp is malfunctioning.
A backup bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
TAIL LAMP, R
CHECK LAMPS!
SUBSTITUTE LAMP ON!
The right tail lamp is malfunctioning.
A backup bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
SIDE MARKER LAMP, LF
CHECK LAMPS!
SUBSTITUTE LAMP ON!
The left parking lamps are
malfunctioning. A backup bulb is being
used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
SIDE MARKER LAMP, RF
CHECK LAMPS!
SUBSTITUTE LAMP ON!
The right parking lamps are
malfunctioning. A backup bulb is being
used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
AUTOM. LIGHT ON
REMOVE KEY!
Key in the starter switch position1 or2.
Remove key from the starter switch.
LIGHTS
TURN OFF LAMPS!
This display appears if the driver’s door is
opened with the engine shut off and no
key in the starter switch.
Insert key in the starter switch.
Switch off lights.
<
SEAT BELT SYSTEM
VISIT WORKSHOP!
The seat belt system is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
DRIVER’S SEAT BELT
FASTEN SEAT BELT!
The display reminds you and your
passengers to fasten seat belts.
Fasten the seat belts.
Display
Possible cause
Suggested solution
Page 285 of 376
285 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
In case of a malfunction in the central lock-
ing system you can unlock the trunk sepa-
rately (
page 91).
Unlocking the driver’s door
If you are unable to unlock the driver’s
door using the SmartKey, open the door
using the mechanical key.
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row and slide the mechanical key2 out
of the housing.
3Unlocked
4Locked
Unlock the door with the mechanical
key. To do so, push the mechanical key
in the lock until it stops and turn it to
the left3.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button
Œ
or
‹
on the
SmartKey.
Insert the key in the starter switch.
Page 286 of 376

286 Practical hintsUnlocking/locking in an emergencyLocking the vehicle
If you are unable to lock the vehicle with
the SmartKey, lock it with the mechanical
key as follows:
Close the passenger doors and the
trunk.
Press the central locking switch in the
cockpit (
page 92).
Check to see whether the locking
knobs on the passenger doors are still
visible. If necessary push them down
manually.
Lock the driver’s door with the me-
chanical key (
page 285).
Check if the trunk is locked. If neces-
sary lock the trunk with the mechanical
key (
page 90).
Changing batteries
If the batteries in the SmartKey are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.
Page 287 of 376
287 Practical hints
Unlocking/locking in an emergency
SmartKey
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 285).
Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment2 is un-
latched.
Pull the battery compartment2 out of
the key housing in direction of arrow.3Battery
4Contact spring
Remove the batteries.
Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.
Return battery compartment into hous-
ing until it locks into place.
Fuel filler flap
Open trunk lid.
Fold away right-side tail lamp trim.
Reach inside through opening2.
Turn release knob1 clockwise (arrow).
The fuel filler flap can now be opened.
Page 296 of 376

296 Practical hintsReplacing wiper blades
Replacing wiper bladesRemoving
Fold wiper arm forward.
Press safety tab down2.
Push wiper blade downward1 and re-
move.Replacing wiper blade inserts
Place wiper blade on firm support.
Press down both tabs.
Slide (direction of arrow) the wiper
blade insert out of the retainer claws.
Slide (direction of arrow) the new wiper
blade insert into retainer claws until
tabs are engaged.
Installing
Slide wiper blade onto wiper arm until
it locks in place.
Warning!
G
For safety reasons, remove key from starter
switch before replacing a wiper blade, other-
wise the motor could suddenly turn on and
cause injury.
!Never open the hood when the wiper
arm is folded forward.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make certain that the wiper blades are
properly installed. Improperly installed
wiper blades may cause windshield
damage.
For your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Center.