Page 344 of 489

343 Operation
Tires and wheels
GVWR (G
ross V
ehicle W
eight R
ating)
This is the maximum permissible vehicle
weight of the fully loaded vehicle (weight of
the vehicle including all options, passen-
gers, fuel, and cargo and, if applicable,
trailer tongue load). It is indicated on
certification label located on the driver’s
door B-pillar.
Kilopascal (kPa)
The metric unit for air pressure. There are
6.9 kPa to 1 psi; another metric unit for air
pressure is bars. There are 100 kilopascals
(kPa) to 1 bar.
Maximum load rating
The maximum load in kilograms and
pounds that can be carried by the tire.
Maximum loaded vehicle weight
The sum of curb weight, accessory weight,
vehicle capacity weight and production
options weight.Maximum tire inflation pressure
This number is the greatest amount of air
pressure that should ever be put in the tire
under normal driving conditions.
Normal occupant weight
The number of occupants the vehicle is
designed to seat, multiplied by
68 kilograms (150 lbs).
Occupant distribution
The distribution of occupants in a vehicle
at their designated seating positions.
Production options weight
The combined weight of those installed
regular production options weighing over
5 lbs (2.3 kilograms) in excess of those
standard items which they replace, not
previously considered in curb weight or
accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty
battery, and special trim.PSI (P
ounds per s
quare i
nch)
A standard unit of measure for air pressure
-> bar, kilopascal (kPa).
Recommended tire inflation pressure
Recommended tire inflation pressure
listed on placard located on driver’s door
B-pillar for normal driving conditions.
Provides best handling, tread life and
riding comfort.
Rim
A metal support for a tire or a tire and tube
assembly upon which the tire beads are
seated.
Sidewall
The portion of a tire between the tread and
the bead.
Page 347 of 489

346 OperationWinter drivingBefore 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
“MB SummerFit” to a premixed wind-
shield washer solvent/antifreeze
which is formulated for temperatures
below freezing point (
page 459).
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.
Winter tires
Always use winter tires at temperatures
below 45°F (7°C) and whenever wintry
road conditions prevail. Not all M+S rated
tires provide special winter performance.
Make sure the tires you use show the
mountain/snowflake.marking on the
tire sidewall. These tires meet specific
snow traction performance requirements
of the Rubber Manufacturers Association
(RMA) and The Rubber Association of Can-
ada (RAC) and have been designed specif-
ically for use in snow conditions. Use of
winter tires is the only way to achieve the
maximum effectiveness of the ABS and the
ESP
® 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 under
1/6in
(4 mm) must be replaced. They are no
longer suitable for winter operation.
Page 467 of 489

466 Technical termsTele Aid System
(T
elematic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Telematics*
A combination of the terms “telecom-
munications” and “informatics”.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.TIN
(T
ire I
dentification N
umber)
(
page 344)
Tire load rating
(page 344)
Tire ply composition and material used
(page 344)
Tire speed rating
(page 344)
Traction
(page 344)
Tread
(page 344)
Treadwear indicators
(page 344)
Uniform Tire Quality Grading Standards
(page 344)Vehicle capacity weight
(
page 344)
Vehicle maximum load on the tire
(page 344)
VIN
(Vehicle I
dentification N
umber)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.
Page 486 of 489

485 Index
Tread depth 319, 346
Treadwear indicators 344
Trip computer 165
Trip odometer 141
Trunk
Closing from inside 113
Fuse box 438
Lamp 139
Lid 111
Lock button, KEYLESS-GO* 109
Message in display 397
Opening 111
Opening, from inside 112
Tie-down rings 268
Trunk lid 113
Trunk lid emergency release 118
Unlocking in an emergency 405
Unlocking/opening,
KEYLESS-GO* 109
Unlocking/opening,
SmartKey 102
Valet locking 119Turn signal lamps
Cleaning lenses 355
Messages in display 394
Replacing bulbs (Bi-Xenon*) 416
Replacing bulbs (Halogen) 415
Replacing bulbs (rear) 417
Turn signals 53
Additional in mirrors 412
Bulbs 412, 413
Bulbs (Bi-Xenon)) 416
Cleaning lenses 355
Indicator lamps 25
Turning off engine 58
U
Uniform Tire Quality
Grading Standards 344
Units, Settings
Speedometer 155
Unleaded gasoline, Premium 455
Upholstery, Cleaning 358
Useful features 269V
Vacuum line routing diagram label 442
Vehicle
Battery 315, 426
Break-in period 294
Care 351
Control system, Settings menu 152
Dimensions 451
Jump starting 430
Locking/Unlocking,
KEYLESS-GO* 33, 60, 103
Locking/Unlocking,
SmartKey 32, 60, 98
Lowering 424
Modifications and alterations,
Operating safety 16
Towing 432
Unlocking/locking
in an emergency 404, 405
Washing 353
Weights 451
Vehicle capacity weight 344
Vehicle Identification Number see VIN
Vehicle jack 398, 400, 421
Vehicle lighting 307