Page 337 of 417

336 Practical hintsWhat to do if ...Left display
Right display
Possible cause
Possible solution
H
Tire pressure, RR
Caution
tire defect!
The right rear tire is rapidly de-
flating.
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers. Observe the traffic
situation around you.
Temporarily repair tire using TIREFIT (
page 349) or
contact Roadside Assistance. If tire cannot be tempo-
rarily repaired using TIREFIT, contact Roadside Assis-
tance.
Have the damaged wheel repaired or replaced at an
authorized Mercedes-Benz Center.
Tire pressure, RR
Check
tires!
The right rear tire inflation pres-
sure is low.
Carefully bring the vehicle to a halt.
Check the tires. If no damage visible, check and correct
tire inflation pressure as required.
If necessary, have the wheel repaired or replaced at an
authorized Mercedes-Benz Center.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle.
Continued driving with a flat tire will cause
excessive heat build-up and possibly a fire.
Warning!
G
Have worn or damaged tires replaced in
pairs (front pair or rear pair). Otherwise the
driving stability of the vehicle will be ad-
versely affected.
Page 338 of 417

337 Practical hints
What to do if ...
Left display
Right display
Possible cause
Possible solution
H
Tire pressure, FL
Caution
tire defect!
The left front tire is rapidly de-
flating.
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers. Observe the traffic
situation around you.
Temporarily repair tire using TIREFIT (
page 349) or
contact Roadside Assistance. If tire cannot be tempo-
rarily repaired using TIREFIT, contact Roadside Assis-
tance.
Have the damaged wheel repaired or replaced at an
authorized Mercedes-Benz Center.
Tire pressure, FL
Check
tires!
The left front tire inflation pres-
sure is low.
Carefully bring the vehicle to a halt.
Check the tires. If no damage visible, check and correct
tire inflation pressure as required.
If necessary, have the wheel repaired or replaced at an
authorized Mercedes-Benz Center.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle.
Continued driving with a flat tire will cause
excessive heat build-up and possibly a fire.
Warning!
G
Have worn or damaged tires replaced in
pairs (front pair or rear pair). Otherwise the
driving stability of the vehicle will be ad-
versely affected.
Page 339 of 417

338 Practical hintsWhat to do if ...Left display
Right display
Possible cause
Possible solution
H
Tire pressure, FR
Caution
tire defect!
The right front tire is rapidly de-
flating.
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers. Observe the traffic
situation around you.
Temporarily repair tire using TIREFIT (
page 349) or
contact Roadside Assistance. If tire cannot be tempo-
rarily repaired using TIREFIT, contact Roadside Assis-
tance.
Have the damaged wheel repaired or replaced at an
authorized Mercedes-Benz Center.
Tire pressure, FR
Check
tires!
The right front tire inflation
pressure is low.
Carefully bring the vehicle to a halt.
Check the tires. If no damage visible, check and correct
tire inflation pressure as required.
If necessary, have the wheel repaired or replaced at an
authorized Mercedes-Benz Center.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle.
Continued driving with a flat tire will cause
excessive heat build-up and possibly a fire.
Warning!
G
Have worn or damaged tires replaced in
pairs (front pair or rear pair). Otherwise the
driving stability of the vehicle will be ad-
versely affected.
Page 340 of 417
339 Practical hints
What to do if ...
Left display
Right display
Possible cause
Possible solution
A
Reserve fuel
The fuel level has fallen into the
reserve range.
Refuel at the next gas station (
page 240).
I
Remove
key!
You have forgotten to remove
the SmartKey.
Remove the SmartKey from the starter switch.
Replace
key
No additional code available for
the SmartKey.
Have the SmartKey checked. Notify an authorized
Mercedes-Benz Center.
W
Washer fluid
Check level!
The washer fluid level has
dropped to about
1/3 of total
reservoir capacity.
Add washer fluid (
page 251).
N
Close
center compart.
The interior motion sensor is
only activated when the stor-
age compartment under the
armrest is closed.
Close the storage compartment under the armrest
(page 200).
Page 352 of 417

351 Practical hints
Flat tire
7Tire valve
8Electric air pump switch
9Air hose with pressure gauge and vent
screw
aFiller hose
Unscrew the valve cap from tire
valve7.
Screw filler hosea onto tire valve7.
Insert electrical plug4 into vehicle
cigarette lighter socket.
Turn the SmartKey in the starter switch
to position1 (
page 40).
PressI on electric air pump switch8.
The electric air pump should now
switch on and inflate the tire.After five minutes, the pressure gauge
must display at least 26 psi (1.8 bar). The
air hose can become hot during inflation.
Please exercise appropriate caution.
If this tire inflation pressure is not at-
tained, turn off the electric air pump,
detach the filler hose from the tire
valve, and drive vehicle back and forth
very slowly approximately 30 ft (10 m).
This serves to better distribute the
TIREFIT sealant material inside the tire.
Unscrew the air pump’s air hose5
from flange6 of the TIREFIT
container.
Screw air hose5onto tire valve7.
Inflate the tire again.
Warning!
G
Observe safety instructions on air pump
label.
!Do not operate the electric air pump
longer than six minutes without inter-
ruption. Otherwise it may overheat.
You may operate the air pump again af-
ter it has cooled off.
Page 387 of 417

386 Technical termsCAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping depending on vehi-
cle settings and/or ambient condi-
tions.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.
Cold tire inflation pressure
(
page 278)
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.Cruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.
Curb weight
(
page 278)
DOT
(Department o
f Transportation)
(
page 279)
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.
Engine oil viscosity
Measure of the internal oil friction (vis-
cosity) at different temperatures. The
higher the temperature the oil can tol-
erate without thinning too much, or the
lower the temperature it can tolerate
without thickening too much, the bet-
ter the viscosity characteristics of the
oil.ESP
(E
lectronic S
tability P
rogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency Tensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRS
GAWR
(G
ross A
xle W
eight R
ating)
(
page 279)
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 gear selector le-
ver.
Page 388 of 417

387 Technical terms
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 CD digital maps for
navigation.
GVW
(G
ross V
ehicle W
eight)
(
page 279)
GVWR
(Gross V
ehicle W
eight R
ating)
(
page 279)
Head-thorax airbag
Installed in the doors, these airbags
protect occupants during side impact
collisions exceeding a preset thresh-
old. Unlike normal side airbags,
head-thorax airbags are also designed
to provide protection for the head area.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.
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 279)
Maximum load rating
(page 279)
Maximum loaded vehicle weight
(page 279)
Maximum tire inflation pressure
(page 279)MON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the MON (Motor Octane Number) and
RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.
Multifunction display
Two display fields in the instrument
cluster used to present information
provided by the control system.
Multifunction steering wheel
Steering wheel with buttons for operat-
ing the control system.
Normal occupant weight
(
page 279)
Page 392 of 417

391 Index
A
ABS 79, 385
Indicator lamp 29, 297
Messages in the multifunction
display 306
ABS/ESP
Warning lamp 29, 296
Accelerator position, automatic
transmission 173
Accessory weight 278
Accident
In case of 55
ACL 385
Messages in the multifunction
display 308
Activating
Air circulation mode 188
Air conditioning (cooling) 192
Anti-theft alarm system 91
Central locking (control system) 135
ESP 84
Exterior headlamps 51
Exterior lamps 106
Headlamps 51
High beams 109
Immobilizer 58, 90Manual gearshift program 175
Rear window defroster 181
Residual heat 190
Tow-away alarm 92
Windshield wipers 53
Adding
Coolant 249
Engine oil 248
Additional turn signals (exterior
mirror) 347
Adjusting
Air distribution 187
Air volume 186
Mirrors 43
Seat angle 42
Seat fore and aft 42
Seat height 42
Seats 41
Steering column height 43
Steering column length 43
Steering wheel 42
Air conditioner refrigerant 377
Air conditioning (cooling)
Turning off 192
Turning on 192
Air pressure 278Air pressure see Tire inflation pressure
Air recirculation mode 188
Air volume adjustment 186
Airbags 63
Children 64
Front 68
Head-thorax 68, 69
Knee 68
Passenger 68
Airbrake 31, 87
Automatic mode 89
Emergency braking 89
Manual mode 88
Message in the multifunction
display 318
Test Mode 88
Warning lamp 29, 301
Alarm
Audible 78, 90
Canceling 91, 93
Visual 90
Anticorrosion/antifreeze 376, 381
Antiglare
Automatic 179