Page 295 of 464

295 Operation
Engine compartment
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Windshield washer system and
headlamp cleaning system*
The windshield washer reservoir is located
on the passenger side of the engine com-
partment.SLK 350 (example)1Washer fluid reservoir cap
Fluid for the windshield washer system and
the headlamp cleaning system* is supplied
from the windshield washer reservoir. It
has a capacity of approx. 7.4 US qt (7 l).
G
Observe all safety instructions
and precautions when handling
automotive batteries.
A
Risk of explosion
D
Keep flames or sparks away
from battery. Do not smoke.
B
Battery acid is caustic. Do not
allow it to come into contact
with skin, eyes or clothing.
In case it does, immediately
flush affected area with clean
water and seek medical help if
necessary.
E
Wear eye protection.
C
Keep children away.
F
Follow the instructions in this
Operator's Manual.
Page 324 of 464

324 OperationTires and wheelsGVWR (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 one psi; another metric unit for
air pressure is bars. There are
100 kilopascals (kPa) to one 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 327 of 464

327 Operation
Winter driving
Winter driving
Before the onset of winter, have your
vehicle winterized at an authorized
Mercedes-Benz Center. This service
includes:
Checking anticorrosion and antifreeze
concentration.
Adding of cleaning concentrate to the
water of the windshield and headlamp
cleaning* system. Add
MB Concentrate “S” to a pre-mixed
windshield washer solvent/antifreeze
which is formulated for temperatures
below freezing point (
page 429).
Battery test. Battery capacity drops
with decreasing ambient temperature.
A well charged battery helps to make
sure the engine can be started, even at
low ambient temperatures.
Tire change. Mercedes-Benz recom-
mends M+S rated radial-ply tires with a
minimum tread depth of approximately 1/6in (4.0 mm) on all four wheels for
the winter season.
Winter tires
Always use winter tires at temperatures
below 45°F (7°C) and whenever wintry
road conditions prevail. Using winter tires
is the only way to achieve the maximum ef-
fectiveness of the ABS and ESP in winter
operation.
For safe handling, make sure all mounted
winter tires are of the same make and have
the same tread design.Always observe the speed rating of the
winter tires mounted to 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.
!When scraping ice or snow from the
rear window, be careful not to damage
the sealing strip or apertures along the
side of the window.
Warning!
G
Winter tires with a tread depth under
1/6 in
(4 mm) must be replaced. They are no long-
er suitable for winter operation.
Page 457 of 464

457 Index
U
Uniform Tire Quality Grading
Standards 325
Unlocking 34
Centrally from inside 97
In an emergency 263
With SmartKey 34
Upgrade scenario (Tele Aid) 262
Upshifting 154
Useful features
Ashtray 253
Cigarette lighter 254
Cup holder 252
Electrical outlet 254
Floormat (Driver’s side only) 255
Garage door opener 264
Heated steering wheel 270
Parcel net 251
Storage compartments, interior 250
Tele Aid 257
Telephone 256V
Valve extractor (Vehicle tool kit) 369
Vehicle
Battery 294, 396
Battery, charging 397
Bulbs 380
Fuses 404
Individual settings
(Control system) 127
Jump starting 399
Lifting with jack 389
Lowering with jack 395
Proper use of 16
Towing 401
Unlocking in an emergency 374
Vehicle capacity weight 325
Vehicle care 334
Cup holder 339
Engine cleaning 336
Exterior lamps 337
Gearshift/gear selector lever 339
Hard plastic trim items 340
Headliner 340
Instrument cluster 339
Light alloy wheels 339Ornamental moldings 337
Paintwork 336
Plastic and rubber parts 340
Power washer 335
Rear window 339
Seat belts 340
Steering wheel 339
Tar stains 335
Upholstery 340
Washing 334, 336
Window cleaning 338
Wiper blades 337
Wood trims 340
Vehicle Identification Number see VIN
Vehicle jack 370
Vehicle loading terminology 323
Vehicle maximum load on the tire 325
Vehicle status message memory menu
(Control system) 126
Vehicle tool kit 369
Collapsible wheel chock 371
Removing 369
Vehicle washing see Vehicle care
VIN 410
Description 437