Page 246 of 376

246 OperationTires and wheelsTire pressure changes by approximately
1.5 psi (0.1 bar) per 18°F (10°C) of air
temperature change. Keep this in mind
when checking tire pressure where the
temperature is different from the outside
temperature.
Tire temperature and tire pressure are also
increased while driving, depending on the
driving speed and the tire load.Check the spare tire periodically for condi-
tion and inflation. Spare tires will age and
b e c o m e w o r n o v e r t i m e e v e n i f n e v e r u s e d ,
and thus should be inspected and replaced
when necessary.
Rotating wheels
On vehicles with the same wheel size all
around, wheels can be rotated every 3000
to 6000 miles (5 000 to 10 000 km), or sooner if necessary, according to the de-
gree of tire wear. The same direction of tire
rotation must be retained.
Rotate the wheels before the characteris-
tic tire wear pattern becomes visible
(shoulder wear on front wheels and tread
center wear on rear wheels).
Thoroughly clean the inner side of the
wheels after each rotation. Check and en-
sure proper tire inflation pressure.
Warning!
G
Follow recommended inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified vehicle capacity weight (as indicat-
ed by the label on the pillar in the driver’s
door opening). Overloading the tires can
overheat them, possibly causing a blowout.Warning!
G
Rotate front and rear wheels only if they are
of the same size.
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
80 lb-ft (110 Nm).
Use only genuine Mercedes-Benz wheel
bolts specified for your vehicle's rims.
Page 371 of 376

371 Index
Tire inflation pressure
Checking 235, 245
Tire speed rating 228, 345
Tire traction 227
Tires 244, 325
Collapsible 342
Consumer information 339
Direction of rotation 245
Driving instructions 226
Retreads 244
Rims and tires 325
Service life 245
Temperature 246
Temperature grades 340
Tread depth 247
Wear pattern 246
Winter 247
Tools 285
Tow-away alarm 25, 79Arming 79
Disarming 79
Disarming for transport 79
Towing eye bolt (vehicle tool kit)
Installing 316
Towing the vehicle 313
Tracking services
For stolen vehicle 214
Traction 144, 339, 345
Transmission see
Automatic transmission 241
Tread depth (tires) 247
Treadwear 339
Trim panel
Opening 318
Trip computer 132
Trip odometer
Resetting 107
Trunk
Auxiliary fuse box 318
Lighting 104Opening 85
Trunk lid
Closing 86
Emergency release 86
Message in display 283
Turn signal lamps
Replacing bulbs 293, 294
Turn signals 48
Additional in mirrors 293
Cleaning lenses 253
Front bulbs 293, 295, 297
Indicator lamps 23
Rear bulbs 294, 299
Turning off
Engine 53
U
Units
Setting speedometer units 124
Setting temperature units 123
Unlocking 30, 82
Page 373 of 376

373 Index
Wood trims 256
Vehicle jack 286
Vehicle lighting
Checking 235
Vehicle tool kit 285
Alignment bolt 285
Spare fuses 285
Special fuse puller 285
Towing eye bolt 285
Vehicle jack 285
Wheel bolts 285
Wheel wrench 285
Vehicle washing 253
Ventilated storage compartment 157
Ventilation
Storage compartment 157
VIN (Vehicle Identification Number) 345
Voice control system* 345
Voice recognition system*
Hands-free microphone 27W
Warning sounds
Drivers seat belts 62
Parking brake 47
Warranty coverage 321
Washer fluid see Windshield washer fluid
Washing the vehicle 251
Wear pattern (tires) 246
Weights 329
Wheel change
Tightening torque 306
Wheels
Rotating 246
Tires and wheels 244
Window curtain airbags 61
Windows see Side windows
Windshield
Defogging 153
Refilling washer fluid 243
Replacing wiper blades 300Washer fluid 243, 338
Washer system 338
Windshield washer fluid 338
Message in display 283
Mixing ratio 338
Refilling 243
Wiping with 50
Windshield washer system 338
Windshield wipers 49
Fast wiper speed 49
Replacing wiper blades 300
Single wipe 50
Switching on 49
Wiping with
windshield washer fluid 50
Winter driving 247
Block heater 248
Snow chains 248
Tires 247
Transmission program mode 144
Winter driving instructions 228