333 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.
336 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 “S” to a premixed
windshield washer solvent / antifreeze
which is formulated for temperatures
below freezing point (
page 468).
Battery test
Battery capacity drops with decreasing
ambient temperature. A well charged
battery helps to make sure that the
engine can be started and the
electro-hydraulic brake system will be
fully operational, 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
Canada (RAC) and have been designed
specifically for use in snow conditions. Use
of winter tires is the only way to achieve
the maximum effectiveness of the ABS,
ESP
® and electro-hydraulic brake system
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
notices 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.
495 Index
Trunk
Closing 114
Lamp 143
Message in display 396
Opening 112
Separately locking and
unlocking 121
Trunk lid emergency release 120
Unlocking and opening with
KEYLESS-GO* 110
Unlocking and opening with
SmartKey 103
Unlocking in an emergency 403
Valet locking 121
Turn signal lamp
Replacing bulbs 415
Turn signal lamps
Cleaning lenses 346
Turn signals 53
Additional in mirrors 412
Front bulbs 412
Messages in display 391
Turning off engine 60U
Uniform Tire Quality Grading
Standards 334
Units, Settings
Speedometer 160
Temperature 161
Unleaded gasoline, Premium 465
Unlocking 34, 98
Trunk with KEYLESS-GO* 110
Unlocking in an emergency 402
Upshifting 183
Useful features 251
V
Vacuum line routing diagram label 446
Valet locking 121
Vehicle
Battery 431
Care 342
Dimensions 459
Locking/unlocking in an
emergency 402, 403
Lowering 429
Modifications and alterations,
operating safety 16Towing 437
Unlocking in an emergency 402
Washing 344
Weights 460
Vehicle capacity weight 334
Vehicle jack 399
Vehicle level
Setting
Automatic 241
Vehicle level control system
Airmatic DC 238
Vehicle lighting
Checking 291
Vehicle loading
Cargo tie-down hooks 250
Instructions 247
Load limit 306
Roof rack* 246
Terminology 332
Vehicle maximum load on the tire 334
Vehicle status message memory 156
Vehicle tool kit 399
VIN 478
Voice control system* 478
