2012 MERCEDES-BENZ E-Class SEDAN tire pressure reset

Load index ..................................... 366
Load index (definition) ...................369
Maximum loaded vehicle weight
(definition) ..................................... 368
Maximum load on a tire
(definition) ..................................... 369
Maximum permissible tire
pressure (definition) ....................... 369
Maximum tire load .........................361
Maximum tire load (definition) .......369
Optional equipment weight
(definition) ..................................... 369
PSI (pounds per square inch)
(definition) ..................................... 369
Replacing ....................................... 370
Service life ..................................... 347
Sidewall (definition) .......................369
Speed rating (definition) ................368
Storing ........................................... 371
Structure and characteristics
(definition) ..................................... 367
Temperature .................................. 363
TIN (Tire Identification Number)
(definition) ..................................... 370
Tire bead (definition) ......................369
Tire pressure (definition) ................369
Tire pressures (recommended) ......368
Tire size (data) ............................... 371
Tire size designation, load-bearing
capacity, speed rating .................... 364
Tire tread ....................................... 347
Tire tread (definition) .....................369
Total load limit (definition) .............370
Traction ......................................... 362
Traction (definition) .......................370
Tread wear ..................................... 362
Uniform Tire Quality Grading
Standards ...................................... 362
Uniform Tire Quality Grading
Standards (definition) ....................368
Unladen weight (definition) ............369
Wear indicator (definition) .............370
Wheel rim (definition) ....................368
see Flat tire
Top Tether ............................................ 60
Towing Important safety guidelines ...........340
Installing the towing eye ................340Removing the towing eye ...............341
With the rear axle raised ................341
Towing away
With both axles on the ground .......341
Tow-starting
Emergency engine starting ............342
Important safety notes ..................340
Transmission
see Automatic transmission
Transporting the vehicle .................. 342
Trim pieces (cleaning instructions) . 319
Trip computer (on-board
computer) .......................................... 219
Trip meter see Trip odometer
Trip odometer
Calling up ....................................... 219
Resetting (on-board computer) ......220
Trunk
Emergency release ..........................89
Important safety guidelines .............84
Locking separately ...........................88
Opening/closing (automatically
from inside) ...................................... 87
Opening/closing (automatically
from outside) ................................... 86
Trunk lid
Display message ............................ 258
Opening/closing .............................. 84
Turn signals
Changing bulbs (front) ...................124
Display message ............................ 242
Switching on/off ........................... 117
Type identification plate
see Vehicle identification plate
U
Unlocking Emergency unlocking .......................83
From inside the vehicle (central
unlocking button) ............................. 82
Index19

R18. The rim diameter is part of the tire size
and can be found on the tire sidewall
( Y page 364).
If the tire pressures have been set to the
lower values for lighter loads and/or lower
road speeds, the pressures should be reset
to the higher values:
R if you want to drive with an increased load
and/or
R if you want to drive at higher road speeds.
i The tire pressures for increased loads
and/or higher road speeds, shown in the
tire pressure table, may have a negative
effect on driving comfort.
Option 3) The tire pressure for the
emergency/collapsible spare wheel
(depending on vehicle equipment) can be
found:
R printed in yellow on the rim of the
emergency/collapsible spare wheel
R in the "Wheel and tire combinations"
section ( Y page 371) in this manual
R on the Tire and Loading Information placard
on the B-pillar on the driver's side.
If the tire pressure is not set correctly, this
can lead to an excessive build up of heat and
a sudden loss of pressure.
For further information, consult a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center.
Important notes on tire pressureGWARNING
Should the tire pressure drop repeatedly:
R check the tire for foreign bodies.
R check whether the wheel is losing air or the
valve is leaking.
R make sure that only a valve cap approved
by Mercedes-Benz is used on the tire valve.
Tire pressures that are too low have a
negative effect on vehicle safety, which could
lead you to cause an accident.
To test tire pressure, use a suitable tire
pressure gauge. The outer appearance of a
tire does not permit any reliable conclusion
about the tire pressure. On vehicles equipped
with the electronic tire pressure monitoring
system, the tire pressure can be checked
using the on-board computer.
The tire temperature and pressure increase
when the vehicle is in motion. This is
dependent on the driving speed and the load.
Therefore, you should only correct tire
pressures when the tires are cold.
The tires are cold:
R if the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
R if the vehicle has not been driven more than
1 mile (1.6 km).
The tire temperature changes depending on
the outside temperature, the vehicle speed
and the tire load. If the tire temperature
changes by 18 ‡ (10 † ), the tire pressure
changes by approximately 10 kPa (0.1 bar/
1.5 psi). Take this into account when
checking the pressure of warm tires and only
correct the tire pressure if it is too low for the
current operating conditions. If you check the
tire pressure when the tires are warm, the
resulting value will be higher than if the tires
were cold. This is normal. Do not reduce the
tire pressure to the value specified for cold
tires. The tire pressure would otherwise be
too low.
Tire pressure351Wheels and tiresZ