tire pressure reset MERCEDES-BENZ GLA SUV 2018 Owner's Manual

Maximum tire load .........................316
Maximum tire load (definition) ....... 318
MOExtended tires .......................... 301
Optional equipment weight (defi-
nition) ............................................ 319
PSI (pounds per square inch) (def-
inition) ...........................................3 19
Replacing ....................................... 319
Service life ..................................... 300
Sidewall (definition) ....................... 319
Speed rating (definition) ................ 318
Storing ...........................................3 20
Structure and characteristics
(definition) ..................................... 317
Summer tires ................................. 301
Temperature .................................. 314
TIN (Tire Identification Number)
(definition) ..................................... 319
Tire bead (definition) ......................3 19
Tire pressure (definition) ................ 319
Tire pressures (recommended) ...... 318
Tire size (data) ............................... 323
Tire size designation, load-bearing
capacity, speed rating .................... 314
Tire tread ....................................... 300
Tire tread (definition) ..................... 319
Total load limit (definition) ............. 319
Traction ......................................... 313
Traction (definition) ....................... 319
Tread wear ..................................... 313
Uniform Tire Quality Grading
Standards ...................................... 313
Uniform Tire Quality Grading
Standards (definition) .................... 318
Wear indicator (definition) ............. 319
Wheel rim (definition) .................... 318
see Flat tire
Tool
see Vehicle tool kit
Top Tether ............................................ 56
Tow-starting
Emergency engine starting ............ 297
Important safety notes .................. 294
Installing the towing eye ................ 295
Removing the towing eye ............... 295
Towing a trailer
ESP
®(Electronic Stability Pro-
gram) ............................................... 66 To
wing away
Important safety guidelines ........... 294
Installing the towing eye ................ 295
Notes for 4MATIC vehicles ............ 296
Removing the towing eye ............... 295
Transporting the vehicle ................ 296
With both axles on the ground ....... 296
With the front axle raised ............... 295
Towing eye ......................................... 283
Traction system
see ETS/4ETS (Electronic Trac-
tion System)
Traffic reports
see also Digital Operator's Man-
ual .................................................. 239
Transmission
see Automatic transmission
Transmission position display
(DIRECT SELECT lever) ...................... 132
Transporting the vehicle .................. 296
Traveling uphill
Brow of hill ..................................... 154
Driving downhill ............................. 154
Maximum gradient-climbing capa-
bility ............................................... 154
Trim pieces (cleaning instruc-
tions) .................................................. 280
Trip computer (on-board com-
puter) .................................................. 189
Trip odometer
Calling up ....................................... 189
Resetting (on-board computer) ...... 190
Trunk
Emergency release button ............... 83
Opening (from outside the vehi-
cle, HANDS-FREE ACCESS) .............. 80
Trunk lid
see Tailgate
Turn signals
Display message ............................ 211
Replacing bulbs (front) ................... 107
Switching on/off ........................... 103
Two-way radio
Frequencies ................................... 326
Installation ..................................... 326
Transmission output (maximum) .... 326
Index21

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:
Rif you want to drive with an increased load
and/or
Rif you want to drive at higher speeds
iThe tire pressures for increased loads and/
or higher road speeds, shown in the tire pres-
sure table, may have a negative effect on driv-
ing comfort.
If the tire pressure is not set correctly, this can
lead to an excessive build-up of heat and a sud-
den loss of pressure.
For more information, contact a qualified spe-
cialist workshop.
Important notes on tire pressure
GWARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. Tire
pressure that is too low may result in a tire
blow-out. There is a risk of an accident.
RCheck the tire for foreign objects.
RCheck whether the wheel is losing air or the valve is leaking.
If you are unable to rectify the damage, con-
tact a qualified specialist workshop.
GWARNING
If you fit unsuitable accessories onto tire
valves, the tire valves may be overloaded and
malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire pres- sure monitors keep the tire valve open. This
can also result in tire pressure loss. There is a
risk of an accident.
Only screw the standard valve cap or other
valve caps approved by Mercedes-Benz for
your vehicle onto the tire valve.
Use a suitable pressure gauge to check the tire
pressure. The outer appearance of a tire does
not permit any reliable conclusion about the tire pressure. On vehicles equipped with the elec-
tronic tire pressure monitor, the tire pressure
can be checked in 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 pres-
sures when the tires are cold.
The tires are cold:
Rif the vehicle has been parked with the tires
out of direct sunlight for at least three hours
and
Rif the vehicle has been driven less 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. 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.
Observe the recommended tire pressures for
cold tires:
Ron the Tire and Loading Information placard
on the B-pillar on the driver's side
Rin the tire pressure table in the fuel filler flap
(Ypage 141)
Underinflated or overinflated tires
Underinflated tires
GWARNING
Tires with pressure that is too low can over-
heat and burst as a consequence. In addition, they also suffer from excessive and/or irreg-
ular wear, which can severely impair the brak-
ing properties and the driving characteristics.
There is a risk of an accident.
Avoid tire pressures that are too low in all the
tires, including the spare wheel.
Underinflated tires may:
Roverheat, leading to tire defects
Radversely affect handling
304Tire pressure
Wheels and tires