2019 MERCEDES-BENZ GLA tire pressure reset

MOExtended tires .......................... 306
Optional equipment weight (defi-
nition) ............................................ 325
PSI (pounds per square inch)
(definition) .....................................324
Replacing ....................................... 325
Service life ..................................... 305
Sidewall (definition) ....................... 325
Speed rating (definition) ................ 324
Storing ...........................................326
Structure and characteristics
(definition) ..................................... 323
Summer tires ................................. 306
Temperature .................................. 319
TIN (Tire Identification Number)
(definition) ..................................... 325
Tire bead (definition) ......................325
Tire pressure (definition) ................ 324
Tire pressures (recommended) ...... 324
Tire size (data) ............................... 329
Tire size designation, load-bear-
ing capacity, speed rating .............. 320
Tire tread ....................................... 305
Tire tread (definition) ..................... 325
Total load limit (definition) ............. 325
Traction ......................................... 319
Traction (definition) ....................... 325
Tread wear..................................... 319
Uniform Tire Quality Grading
Standards ...................................... 319
Uniform Tire Quality Grading
Standards (definition) .................... 323
Wear indicator (definition) ............. 325
Wheel rim (definition) .................... 324
see Flat tire
Tool
see Vehicle tool kit
Top Tether............................................ 56
Tow-starting
Emergency engine starting ............ 301
Important safety notes .................. 298
Installing the towing eye ................ 299
Removing the towing eye ............... 299
Towing
Permitted towing methods ............ 300
Towing a trailer
ESP®(Electronic Stability Pro-
gram) ............................................... 66
Towing away
Important safety guidelines ........... 298
Installing the towing eye ................ 299
Notes for 4MATIC vehicles ............ 301
Removing the towing eye ............... 299
Transporting the vehicle ................ 300
With both axles on the ground ....... 300
With the front axle raised ............... 299
Towing eye......................................... 287
Traction system
see ETS/4ETS (Electronic Trac-
tion System)
Traffic reports
see also Digital Operator's Man-
ual .................................................. 242
Transmission
see Automatic transmission
Transmission position display
(DIRECT SELECT lever)...................... 134
Transporting the vehicle.................. 300
Traveling uphill
Brow of hill ..................................... 156
Driving downhill ............................. 156
Maximum gradient-climbing
capability ....................................... 156
Trim pieces (cleaning instruc-
tions).................................................. 284
Trip computer (on-board com-
puter).................................................. 192
Trip odometer
Calling up ....................................... 192
Resetting (on-board computer) ...... 193
Trunk
Emergency release button ............... 83
Opening (from outside the vehi-
cle, HANDS-FREE ACCESS) .............. 80
Trunk lid
see Tailgate
Turn signals
Display message ............................ 214
Replacing bulbs (front) ................... 108
Switching on/off........................... 104
Two-way radio
Frequencies ................................... 332
Installation ..................................... 332
Transmission output (maximum) .... 332
Index21

If the tire pressures have been set to the lowervalues for lighter loads and/or lower roadspeeds, the pressures should be reset to thehigher values:
Rif you want to drive with an increased loadand/or
Rif you want to drive at higher speeds
iThe tire pressures for increased loadsand/or higher road speeds, shown in thetire pressure table, may have a negativeeffect on driving comfort.
If the tire pressure is not set correctly, this canlead to an excessive build-up of heat and asudden 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 pres-
sure loss. Due to their design, retrofitted tire
pressure 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 thetire pressure. The outer appearance of a tiredoes not permit any reliable conclusion aboutthe tire pressure. On vehicles equipped withthe electronic tire pressure monitor, the tire
pressure can be checked in the on-board com-puter.
The tire temperature and pressure increasewhen the vehicle is in motion. This is depend-ent 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 tiresout of direct sunlight for at least three hoursand
Rif the vehicle has been driven less than1 mile (1.6 km)
The tire temperature changes depending onthe outside temperature, the vehicle speedand the tire load. If the tire temperaturechanges by 18 ‡ (10 †), the tire pressurechanges by approximately 10 kPa (0.1 bar/1.5 psi). Take this into account when checkingthe pressure of warm tires. Only correct thetire pressure if it is too low for the currentoperating conditions. If you check the tirepressure when the tires are warm, the result-ing value will be higher than if the tires werecold. This is normal. Do not reduce the tirepressure to the value specified for cold tires.The tire pressure would otherwise be too low.
Observe the recommended tire pressures forcold tires:
Ron the Tire and Loading Information placardon the B-pillar on the driver's side
Rin the tire pressure table in the fuel filler flap(Ypage 144)
Underinflated or overinflated tires
Underinflated tires
GWARNING
Tires with pressure that is too low can over-
heat and burst as a consequence. In addi-
tion, they also suffer from excessive and/or
irregular wear, which can severely impair the
braking properties and the driving character-
istics. There is a risk of an accident.
Avoid tire pressures that are too low in all
the tires, including the spare wheel.
Tire pressure309
Wheels and tires
Z