Page 286 of 456

285 Operation
Tires and wheels
Tread depth
Do not allow your tires to wear down too
far. Adhesion properties on wet roads are
sharply reduced at tread depths under 1/8in (3 mm).
Treadwear indicators (TWI) are required by
law. These indicators are located in six
places on the tread circumference and
become visible at a tread depth of approx-
imately
1/16
in (1.6 mm), at which point
the tire is considered worn and should be
replaced.
Recommended minimum tire tread depth:
Summer tires
1/8in (3 mm)
Winter tires
1/6in (4 mm)
1TWI (T
readW
ear I
ndicator)
The treadwear indicator appears as a solid
band across the tread.Storing tires
Cleaning tires
Warning!
G
Although the applicable federal motor safety
laws consider a tire to be worn when the
tread wear indicators (TWI) become visible
at approximately
1/16in (1.6 mm), we rec-
ommend that you do not allow your tires
to wear down to that level. As tread depth
approaches
1/8in (3 mm), the adhesion
properties on a wet road are sharply re-
duced.
Depending upon the weather and/or road
surface (conditions), the tire traction varies
widely.
!Keep unmounted tires in a cool, dry
place with as little exposure to light as
possible. Protect tires from contact
with oil, grease and gasoline.!Never use a round nozzle to power
wash tires. The intense jet of water can
result in damage to the tire.
Always replace a damaged tire.
Page 318 of 456

317 Operation
Maintenance
Resetting the maintenance service indicator
In the event that the maintenance service
on your vehicle is not carried out by an au-
thorized Mercedes-Benz Center, you can
have the maintenance service indicator re-
set. The automotive maintenance facility
carrying out the maintenance service will
find the information for resetting the main-
tenance service indicator in the mainte-
nance-relevant information for your
vehicle. Such information is available from
either your authorized Mercedes-Benz
Center or directly from Mercedes-Benz
USA, LLC.
iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the maintenance
service indicator. To arrive at the true
maintenance service deadline, you will
need to subtract these days from the
days shown in the maintenance service
indicator.
Do not confuse the maintenance ser-
vice indicator with the engine oil level
indicator N.
iIf the maintenance service indicator
was inadvertently reset, have an autho-
rized Mercedes-Benz Center correct it.
Only reset if the proper maintenance
service has been performed. Resetting
the system without performing the
proper service as called for by the
maintenance service indicator will re-
sult in engine damage and/or other ve-
hicle damage not covered by the
Mercedes-Benz Limited Warranty.
Page 340 of 456
339 Practical hints
What to do if …?
Text messagesDisplay
Possible cause/consequence
Possible solution
ABC
ACTIVE BODY CONTROL
DRIVE CAREFULLY
The capability of the ABC system is restrict-
ed. This can impair the handling.
Do not exceed a speed of 50 mph (80 km/h).
Visit an authorized Mercedes-Benz Center as
soon as possible.
The vehicle is losing oil.
Stop your vehicle as soon as it is safe to do
so.
ACTIVE BODY CONTROL
STOP, CAR TOO LOW
The vehicle is parked on an extremely
uneven surface and/or is heavily laden.
Press the vehicle level control button to se-
lect level 2 (
page 222).
You can continue to drive, if the vehicle
raised and the message disappears.
Set the desired vehicle level using the vehicle
level control button.
Page 352 of 456
351 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
:
ADD 1.0 QT. OIL
AT FILLING STATION(Canada:
1.0 LITER
)
The engine oil level is too low.
Add engine oil (
page 278) and check
the engine oil level (page 275).
ENGINE OIL LEVEL
STOP, ENGINE OFF
There is no oil in the engine.
There is a danger of engine damage.
Carefully bring the vehicle to a halt as
soon as possible.
Turn off the engine.
Add engine oil (
page 278) and check
the engine oil level (page 275).
ENGINE OIL LEVEL
REDUCE OIL LEVEL
You have added too much engine oil.
There is a risk of damaging the engine or
the catalytic converter.
Have excess oil siphoned or drained off.
Observe all legal requirements with re-
spect to its disposal.
Page 353 of 456

352 Practical hintsWhat to do if …?When the message:ADD 1.0 QT. OIL
AT FILLING STATION(Canada:
1.0 LITER
)
appears while the engine is running and at
operating temperature, the engine oil level
has dropped to approximately the mini-
mum level.When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest ser-
vice station where the engine oil should be
topped to the required level with an ap-
proved oil specified in the Factory
Approved Service Products pamphlet.
Display
Possible cause/consequence
Possible solution
:
ENGINE OIL LEVEL
VISIT WORKSHOP
The engine oil has dropped to a critical
level.
Check the engine oil level (
page 275)
and add engine oil as required
(
page 278).
If you must add engine oil frequently,
have the engine checked for possible
leaks.
There is water in the engine oil.
Have the engine oil checked.
OIL SENSOR MALFUNCT.
VISIT WORKSHOP
The measuring system is malfunctioning.
Have the measuring system checked by
an authorized Mercedes-Benz Center.
!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Page 430 of 456

429 Technical terms
ESP
®(Electronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem’s threshold to tighten the seat
belts.
->SRS
FSS (Canada vehicles)
(F
lexible S
ervice S
ystem)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. FSS evaluates en-
gine temperature, oil level, vehicle
speed, engine speed, distance driven
and the time elapsed since your last
maintenance service, and calls for the
next maintenance service accordingly.
GAWR
(G
ross A
xle W
eight R
ating)
(
page 309)Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the selector lever.
GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers. Employs DVD digital maps for
navigation.
GVW
(G
ross V
ehicle W
eight)
(
page 309)
GVWR
(Gross V
ehicle W
eight R
ating)
(
page 310)
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer,
engine temperature and fuel gauge.KEYLESS-GO*
System for entering and operating the
vehicle without the use of a SmartKey.
Kickdown
Depressing the accelerator past the
point of resistance shifts the transmis-
sion down to the lowest possible gear.
This very quickly accelerates the vehi-
cle and should not be used for normal
acceleration needs.
Kilopascal (kPa)
(
page 310)
Line of fall
The direct line that an object moves
downhill when influenced by the force
of gravity alone.
Locking knob
Knob on the door which indicates
whether the door is locked or un-
locked. Pushing the locking knob down
on an individual door from inside will
lock that door.
Page 439 of 456

438 IndexEngine oil 274, 420
Adding 278
Additives 420
Changing 278, 420
Checking level 274
Consumption 274
Filler neck 278, 279
Messages in display 275, 276, 351
Recommended engine oils and oil
filter 420
Viscosity 428
ESP
®
82, 429
Messages in display 342
Warning lamp 332, 333
ETD 71, 429
Safety guidelines 66
Exterior rear view mirrors 43
Auto-dimming on the driver’s
side 178
Parking position 124, 180
Parking position for 164
Power folding 180
Storing parking position 124F
Filler neck, Engine oil 278, 279
First aid kit 369
Flat tire 386
Jacking up the vehicle 387
Lowering the vehicle 390
Mounting the spare wheel 386
Preparing the vehicle 386
Flexible Service System see FSS
Fluids
ABC fluid 279
Automatic transmission 279, 418
Brake fluid 272, 418, 420
Capacities 418
Engine coolant 280, 419, 422
Engine oil 418, 420
Hydraulic system for ABC 418
Power steering fluid 418
Windshield washer system and head-
lamp cleaning system 282, 419,
425
Fog lamps 128, 379
Messages in display 355, 357
Replacing bulbs 379, 383Front air bags 67
Front lamps see Headlamps
Front passenger front air bag 63, 67
Front passenger front air bag off indicator
lamp 74, 336
Front seat head restraints see Head re-
straints
FSS (Canada vehicles) 315, 429
Fuel 271, 419, 421
Additives 422
Capacities, Fuel tank 419
Consumption statistics after
start 151
Consumption statistics since last
reset 152
Filling the tank 270
Fuel filler flap and cap 270, 374
Fuel gauge 25, 331
Fuel reserve warning lamp 25, 331
Requirements, Octane rating 271,
419, 421
Technical data 419, 421
Fuel cap
Engine malfunction indicator
lamp 331
Message in display 360