Page 301 of 491

300 OperationEngine compartment
Closing
Let the hood drop from a height of ap-
proximately 1 ft (30 cm).
The hood will lock audibly.
Check to make sure the hood is fully
closed.
If you can raise the hood at a point
above the headlamps, then it is not
properly closed. Open it again and let it
drop with somewhat greater force.
Engine oil
The amount of oil your engine needs will
depend on a number of factors, including
driving style. Higher oil consumption can
occur when
the vehicle is new
the vehicle is driven frequently at
higher engine speeds
Engine oil consumption checks should only
be made after the vehicle break-in period.
Warning!
G
If you see flames or smoke coming from the
engine compartment, or if the coolant tem-
perature gauge indicates that the engine is
overheated, do not open the hood. Move
away from vehicle and do not open the hood
until the engine has cooled. If necessary,
call the fire department.Warning!
G
The engine is equipped with a transistorized
ignition system. Because of the high voltage
it is dangerous to touch any components (ig-
nition coils, spark plug sockets, diagnostic
socket) of the ignition system
with the engine running
while starting the engine
if ignition is “on” and the engine is
turned manually
Warning!
G
Be careful that you do not close the hood on
anyone.
iDo not use any special lubricant addi-
tives, as these may damage the drive
assemblies. Using special additives not
approved by Mercedes-Benz may
cause damage not covered by the
Mercedes-Benz Limited Warranty.
More information on this subject is
available at any Mercedes-Benz
Center.
Page 307 of 491

306 OperationEngine compartmentWindshield washer system and headlamp cleaning system*
The windshield washer reservoir is located
in the engine compartment.
1Washer fluid reservoir
Fluid for the windshield washer system and
the headlamp cleaning system is supplied
from the windshield washer reservoir. It
has a capacity of:
Vehicles without headlamp cleaning
system: approximately 4.8 US qt
(4.5 l).
Vehicles with headlamp cleaning sys-
tem: approximately 7.4 US qt (7 l).During all seasons, add MB Windshield
Washer Concentrate “S” to water. Premix
the windshield washer fluid in a suitable
container.
Refill the reservoir with MB Windshield
Washer Concentrate and water (or
commercially available premixed wind-
shield washer solvent / antifreeze, de-
pending on ambient temperatures).
Always use washer solvent/antifreeze
where temperatures may fall below
freezing point. Failure to do so could re-
sult in damage to the washer sys-
tem/reservoir.
For more information, see “Windshield and
headlamp washer fluid mixing ratio”
(
page 458).!Only use washer fluid which is suitable
for plastic lenses. Improper washer flu-
id can damage the plastic lenses of the
headlamps.Warning!
G
Washer solvent / antifreeze is highly flam-
mable. Do not spill washer solvent /
antifreeze on hot engine parts, because it
may ignite and burn. You could be seriously
burned.
Page 338 of 491

337 Operation
Winter driving
Winter driving
Before the onset of winter, have your
vehicle winterized at an authorized
Mercedes-Benz Center. This service
includes:
Check of anticorrosion and antifreeze
concentration.
Addition of cleaning concentrate to the
water of the windshield and headlamp
cleaning system. Add MB Concentrate
“S” to a premixed windshield washer
solvent/antifreeze which is formulated
for below freezing temperatures
(page 456).
Battery test. Battery capacity drops
with decreasing ambient temperature.
A well charged battery helps to make
sure that the engine can be started,
even at low ambient temperatures.
Tire change. Mercedes-Benz recom-
mends M+S rated radial-ply tires with a
minimum tread depth of approximately 1/6 in (4 mm) on all four wheels for the
winter season.
Winter tires
Always use winter tires at temperatures
below 45°F (7°C) and whenever wintry
road conditions prevail. Use of winter tires
is the only way to achieve the maximum ef-
fectiveness of the ABS, ESP and 4MATIC in
winter operation.
For safe handling, make sure that all
mounted winter tires are of the same make
and have the same tread design.Always observe the speed rating of the
winter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your ve-
hicle, you must place a notice to this effect
where it will be seen by the driver. Such no-
tices are available at your tire dealer or any
authorized Mercedes-Benz Center.Warning!
G
Winter tires with a tread depth of less than 1/6in (4 mm) must be replaced. They are no
longer suitable for winter operation.
Warning!
G
If you use your spare tire when winter tires
are fitted on the other wheels, be aware that
the difference in tire characteristics may
very well impair turning stability and that
overall driving stability may be reduced.
Adapt your driving style accordingly.
Have the spare tire replaced with a winter
tire at the nearest authorized
Mercedes-Benz Center.
Page 348 of 491

347 Operation
Vehicle care
Ornamental moldings
For regular cleaning and care of very dirty
chrome-plated parts, use a chrome clean-
er.
Headlamps, tail lamps, side markers,
turn signal lenses
Use a mild car wash detergent, such as
Mercedes-Benz approved Car Shampoo,
with plenty of water.
To prevent scratches, never apply strong
force and use only a soft, non-scratchy
cloth when cleaning the lenses. Do not at-
tempt to wipe dirty lenses with a dry cloth
or sponge.Cleaning the Distronic* system sensor
cover
1Distronic system sensor cover
Use a mild car wash detergent, such as
Mercedes-Benz approved Car Shampoo,
with plenty of water to clean sensor
cover1.
To prevent scratches, never apply strong
force and use only a soft, non-scratchy
cloth when cleaning the sensor cover. Do
not attempt to wipe dirty sensors with a
dry cloth or sponge.Wiper blades
Turn on the wipers and place it in a ver-
tical position.
For information on placing the wipers in a
vertical position, see “Replacing wiper
blades” (
page 416).
iRestart the engine after cleaning sen-
sor cover1.!The windshield wipers must be in a ver-
tical position before folding them away
from the windshield. They could other-
wise damage the hood.
Page 364 of 491
363 Practical hints
What to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may
appear in the multifunction display.
For your convenience the messages are
devided into two sections:
Text messages (
page 364)
Symbol messages (
page 373)
iSwitching on the ignition causes all in-
strument cluster lamps (expect low
beam headlamp indicator lamp, high
beam headlamp indicator lamp, and
turn signal indicator lamps unless acti-
vated) as well as the multifunction dis-
play to come on. Make sure the lamps
and multifunction display are in work-
ing order before starting your journey.
Page 387 of 491

386 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
Brake lamp
Drive to workshop
Brake lamp illumination is delayed or
lamp is permanently on.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake lamp, left
Substitute bulb on
The left brake lamp is malfunctioning. A
substitute bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake lamp, right
Substitute bulb on
The right brake lamp is malfunctioning. A
substitute bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Display malfunction
Visit workshop
The display for the lamps or the system is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Front foglamp,
left
The left front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
Front foglamp,
right
The right front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
Active Hdlmp.
currently
unavailable
The active headlamps are malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Active Hdlmp.
Backup lamp on
The active headlamps are malfunctioning.
Another light is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Active Hdlmp.
malfunction
Drive to workshop
The active headlamps have malfunc-
tioned several times in succession.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Page 388 of 491

387 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
.
High beam,
left
The left high beam lamp is malfunction-
ing.
Replace the bulb as soon as possible.
High beam,
right
The right high beam lamp is malfunction-
ing.
Replace the bulb as soon as possible.
License plate lamp,
left
The left license plate lamp is malfunction-
ing.
Replace the bulb as soon as possible.
License plate lamp,
right
The right license plate lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
Light sensor
Drive to workshop
The lamp sensor is malfunctioning. The
headlamps switch on automatically.
In the control system, set lamp opera-
tion to manual mode (
page 170).
Switch on headlamps using the exteri-
or lamp switch.
Low beam,
left
The left low beam lamp is malfunctioning.
Halogen headlamp:
Replace the bulb as soon as possible.
Bi-Xenon* headlamp:
Visit an authorized Mercedes-Benz
Center as soon as possible.
Backup lamp, left
The left reverse lamp is malfunctioning.
Replace the bulb as soon as possible.
Backup lamp, right
The right reverse lamp is malfunctioning.
Replace the bulb as soon as possible.
Page 389 of 491

388 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
Low beam,
right
The right low beam lamp is malfunction-
ing.
Halogen headlamp:
Replace the bulb as soon as possible.
Bi-Xenon* headlamp:
Visit an authorized Mercedes-Benz
Center as soon as possible.
Front Marker light
,
left
The front left side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
Front Marker light,
right
The front right side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
Fr. Park. lamp, left
The left parking lamps are malfunction-
ing.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Fr. Park. lamp, right
The right parking lamps are malfunction-
ing.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Rear foglamp
Substitute bulb on
The rear fog lamp is malfunctioning. A
substitute bulb is being used.
Replace the bulb as soon as possible.
Switch off lamps
Lamps have been turned on although the
SmartKey in the starter switch is in posi-
tion 0.
Switch off the headlights.