Page 343 of 481

342 OperationTires and wheelsQuality grades can be found, where appli-
cable, on the tire sidewall between tread
shoulder and maximum section width. For
example:
All passenger car tires must conform to
federal safety requirements in addition to
these grades.Treadwear
The treadwear grade is a comparative rat-
ing based on the wear rate of the tire when
tested under controlled conditions on a
specified government test course. For ex-
ample, a tire graded 150 would wear one
and one-half (1
1/2) times as well on the
government course as a tire graded 100.
The relative performance of tires depends
upon the actual conditions of their use,
however, and may depart significantly
from the norm due to variations in driving
habits, service practices and differences in
road characteristics and climate.Traction
The traction grades, from highest to low-
est, are AA, A, B, and C. Those grades rep-
resent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government test
surfaces of asphalt and concrete. A tire
marked C may have poor traction perfor-
mance.
Treadwear
Traction
Temperature
200
AA
A
Warning!
G
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.
Page 366 of 481

365 Practical hints
What to do if …
v
The yellow ESP
® warning lamp
comes on while driving.
The ESP
® is deactivated.
Risk of accident!
Adapt your speed and driving to the
prevailing road, weather and traffic
conditions.
Switch the ESP
® back on (
page 86).
If the ESP
® cannot be switched back on, have the
system checked at an authorized Mercedes-Benz
Center as soon as possible.
The yellow ESP
® warning lamp flash-
es while driving.
The ESP
® or traction control has
come into operation because of de-
tected traction loss in at least one
tire.
When driving off, apply as little throttle as
possible.
While driving, ease up on the accelerator.
Adapt your speed and driving to the prevailing
road and weather conditions.
Do not deactivate the ESP
®.
Exceptions: (
page 84).
Failure to follow these instructions increases the
risk of an accident.
4
The yellow fuel reserve warning lamp
comes on while driving.
Additionally you see the message Reserve fuel
in the multifunction
display.
The fuel level has gone below the re-
serve mark.
Refuel at the next gas station (
page 304).
After refueling you will see the message
1 message
in the multifunction display.
Press reset buttonJ to confirm the message
(page 24).
Problem
Possible cause/consequence
Suggested solution
Page 478 of 481

477 Index
Removing wheel 415
Retreads 317
Rims and tires 439
Rotating 347
Run Flat Indicator* 329
Service life 318
Sizes 439
Snow chains 349
Spare wheel 391
Speed rating 298
Storing 319
Supplemental tire inflation pressure
information 304
Temperature 343
Traction 298
Tread depth 319, 348
Treadwear indicators (TWI) 297
Wear pattern 347
Wheel chock (Vehicle tool kit) 388
Winter 348
Tools see Vehicle tool kit
Tow-away alarm see Anti-theft systems
Towing (Vehicle) 426
Traction 163, 346Transmission, display message 372
Transporting the vehicle 89
Traveling abroad 301
Tread 346
Tread depth 319, 348
Treadwear indicators 297, 346
Trip computer menu (Control
system) 149
Trunk 98
Cargo compartment cover 253
Lighting 118
Trunk lid emergency release 100
Trunk lid lock 395
Unlocking with SmartKey 96
Turn signals 55, 401
Additional in mirrors 401
TWI see Treadwear indicatorsU
Uniform Tire Quality Grading
Standards 346
Unlocking 34
Centrally from inside 102
In an emergency 280
With SmartKey 34
Upholstery
Cleaning 360
Useful features
Ashtray 269
Cigarette lighter 270
Cup holder 268
Floormat (Driver’s side only) 271
Garage door opener* 281
Heated steering wheel* 288
Parcel net 267
Power outlet 271
Storage compartments, interior 266
Tele Aid 273
Telephone* 272