346 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
H
The yellow warning lamp for the
tire inflation pressure monitor
comes on.
The tire inflation pressure monitor detects a
loss of pressure in at least one tire.
Bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Observe the traffic situation around you.
Take note of the messages in the multi-
function display.
The warning lamp goes out once the tire in-
flation pressure monitor has been reactivat-
ed after the tire inflation pressures have
been corrected.
Warning!
G
When the tire inflation pressure monitoring
system warning light is lit, one or more of
your tires is significantly under-inflated. You
should stop and check your tires as soon as
possible, and inflate them to the proper
pressure as indicated on the vehicle’s tire in-
formation placard. Driving on a significantly
under-inflated tire causes the tire to over-
heat and can lead to tire failure.
Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Each tire,
including the spare, should be checked
monthly when cold and set to the recom-
mended inflation pressure as specified in
the vehicle placard and owner’s manual.
iThe recommended tire inflation pres-
sures for your vehicle can be found on
the tire placard on the driver’s door
B-pillar or, if available, the inside of the
fuel filler flap, not in the owner’s
manual.
375 Practical hints
What to do if …?
Display
Possible cause
Possible solution
A
TANK OPEN
CHECK FILLER CAP
A loss of pressure has been detected in
the fuel system. The fuel cap may not be
closed properly or the fuel system may be
leaky.
Check the fuel cap (
page 284).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an au-
thorized Mercedes-Benz Center.
Ê
TRUNK OPEN
This message will appear whenever the
trunk lid is open.
Close the trunk lid.
W
WASHER FLUID
CHECK LEVEL
The fluid level has dropped to about
1/3
of total reservoir capacity.
Add washer fluid (
page 296).
426 Technical dataRims and tires
!
Only use tires which have been specifi-
cally developed for your vehicle and
tested and approved by
Mercedes-Benz. Tires approved by
Mercedes-Benz are developed to pro-
vide best possible performance in con-
junction with the driving safety
systems on your vehicle such as ABS or
ESP
®. Tires specially developed for
your vehicle and tested and approved
by Mercedes-Benz can be identified by
finding the following on the tire’s side-
wall:
MO = M
ercedes-Benz O
riginal
equipment tires
Using tires other than those approved
by Mercedes-Benz may result in dam-
age that is not covered by the
Mercedes-Benz Limited Warranty.
!Using tires other than those approved
by Mercedes-Benz can have detrimen-
tal effects, such as
poor handling characteristics
increased noise
increased fuel consumption
Moreover, tires and rims not approved
by Mercedes-Benz may, under load,
exhibit dimensional variations and dif-
ferent tire deformation characteristics
that could cause them to come into
contact with the vehicle body or axle
parts. Damage to the tires or the vehi-
cle may be the result.
iFurther information on tires and rims is
available at any authorized
Mercedes-Benz Center. A placard with
the recommended tire inflation pres-
sures is located on the driver’s door
B-pillar (
page 300). Some vehicles
may have supplemental tire inflation
pressure information for driving at high
speeds (page 307) or for vehicle
loads less than the maximum loaded
vehicle condition (
page 313). If such
information is provided, it can be found
on the placard located on the inside of
the fuel filler flap. The tire inflation
pressure should be checked regularly
and should only be adjusted on cold
tires. Follow tire manufacturer’s main-
tenance recommendation included
with vehicle.
438 Technical dataFuels, coolants, lubricants, etc.Premium unleaded gasoline
Fuel requirements
Use only premium unleaded fuel:
The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M)/2). This is also known as the
ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not exceed
10%; MTBE must not exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional co-solvents.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains
10% ethanol and 90% unleaded gasoline,
can be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Warning!
G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
injury. Whenever you are around gasoline,
avoid inhaling fumes and skin contact, extin-
guish all smoking materials. Never allow
sparks, flame or smoking materials near
gasoline!
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
gasoline is not available and low octane
fuel is used, follow these precautions:
Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible.
Avoid full throttle driving and abrupt
acceleration.
Do not exceed an engine speed of
3000 rpm if the vehicle is loaded
with a light load such as two
persons and no luggage.
Do not exceed
2/3 of maximum
accelerator pedal position if the ve-
hicle is fully loaded or operating in
mountainous terrain.
446 Technical termsGPS
(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 323)
GVWR
(Gross V
ehicle W
eight R
ating)
(
page 324)
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 324)
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.Maintenance System (U.S. vehicles)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. The Maintenance
System in your vehicle tracks distance
driven and the time elapsed since your
last maintenance service, and calls for
the next maintenance service accord-
ingly.
Maximum load rating
(
page 324)
Maximum loaded vehicle weight
(page 324)
Maximum tire inflation pressure
(page 324)
Memory function
Used to store three individual seat,
steering wheel and exterior mirror posi-
tions for each SmartKey or SmartKey
with KEYLESS-GO*.
464 IndexMaintenance System (U.S. vehicles) 446
Manual headlamp mode 132
Manual operations
Closing the power tilt/sliding
sunroof 391
Fuel filler flap 390
Interior lighting control 137
Locking the vehicle 389
Opening the power tilt/sliding
sunroof 391
Power tilt/sliding sunroof 391
Unlocking the driver’s door 388
Manual shift program S 55 AMG and
S 65 AMG
Activating 184
Automatic transmission 183
Deactivating 185
Massage function 123
MAXCOOL
Maximum cooling 197
Maximum inflation pressure 324Maximum load rating 324
Maximum loaded vehicle weight 324
Mechanical key 388
Memory function 128, 446
Recalling positions from
memory 129
Storing exterior rear view mirror park-
ing positions 130
Storing key dependent settings 129
Menus 145
AUDIO 148
Distronic* 156, 221
In control system 146, 147
NAVI 155
Settings menu 160
Standard display 148
Submenus 145
TEL* 153
Trip computer 157
Vehicle status message memory 159Microphone
Hands-free microphone 29
Miles/kilometers in speedometer
Setting 163
Mirrors
Activating exterior rear view mirror
parking position 187
Adjusting 41
Auto-dimming for rear view
mirror 186
Exterior rear view mirror parking
position 170
Exterior rear view mirrors 41
Interior rear view mirror 41
Storing exterior rear view mirror park-
ing position 130
MON 285
MON (Motor Octane Number) 447
MP3-CD operation
Selecting tracks 150
468 IndexPRE-SAFE
®
447
PRE-SAFE
® see Preventive occupant
safety 70
Preventive occupant safety
(PRE-SAFE®)70
Problems
While driving 54
With vehicle 17
Product information 9
Production options weight 324
Program mode selector switch 448
Proper use of the vehicle 16
PSI 324
PULSE function (Massage function) 123
Q
Quick search
Phone book* 154
R
Radio
Selecting satellite radio*
stations 149
Selecting stations 149
Radio transmitters, control and
operation 281Range (distance to empty)
Calling up 158
Reading lamps in the front 138
Reading lamps in the rear 138
Rear fog lamp 395
Bulb 395
Switching on 134
Rear lamp bulbs
Replacing 399
Rear lamps see Tail lamps
Rear passenger compartment
Adjustable air vents 204
Rear seat head restraints
Folding back with switch 120
Placing upright 121
Rear seats 120
Rear seats 117
Fore and aft adjustment 118
Head restraint folding down or placing
upright, vehicles with power seat
bench* 117
Head restraint height* 118
Individual seats* 117
Passenger seat fore and aft
adjustment 119Passenger seat head restraint
height 119
Passenger seat height 119
Rear seat head restraints 120
Seat height 118
Setting front passenger seat position
from rear* 118
Rear side window sunshade* 191
Rear view mirror 29
Rear view mirror auto-dimming 186
Rear view mirrors see Mirrors
Rear window
Blocking operation 77
Rear window defroster 201
Activating 201
Deactivating 201
Rear window sunshade 191
Recommended inflation pressure 324,
448
Reconnecting
Vehicle battery 410
Recovery services
For stolen vehicle 262
Refueling 284
Regular checks 285
Regular driving style 232
474 IndexTemperature
Display mode 163
Setting units in display 163
Tires 307
Tie-down hooks (Trunk) 240
Tightening torque 449
Tightening torque (Wheel bolts) 407
Tilt/sliding sunroof
Stopping 214
Synchronizing 214
TIN 325
Tire
Vehicle maximum load on 325
Tire and Loading Information 301
Tire and loading terminology 323
Tire care and maintenance 298
Tire Identification Number see TIN
Tire inflation pressure
Checking 286, 306, 308
Setting units 164
Tire inflation pressure see the placard on
the fuel filler flapTire inspection 298
Tire load rating 325
Tire ply composition and material
used 325
Tire speed rating 278, 315, 325
Tire terminology 323
Tire traction 278
Tires 297
Direction of rotation 300
Driving instructions 277
Messages in display 376–383
Retreads 297
Rotating 326
Service life 298
Temperature 307, 322
Tire inflation pressure monitor warning
lamp 346
Tread depth 299, 327
Wear pattern 326
Winter 327
Tools 384Tow-away alarm 88
Arming 88
Canceling alarm 89
Disarming 88
Disarming for transport 88
Towing eye bolt (vehicle tool kit) 385
Installing 415
Towing the vehicle 413
Traction 179, 325
Transmission see Automatic
transmission 293
Tread 325
Tread depth 299
Tread depth (tires) 327
Treadwear indicators 325
Trip computer 157
Trip odometer
Resetting 141