maintenance reset TOYOTA AYGO 2019 Owners Manual (in English)

3737-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99R19E
■When to replace your vehicle’s tires
Tires should be replaced if:
● The treadwear indicators are showing on a tire.
● You have tire damage such as cuts, splits, cracks deep enough to expose
the fabric, and bulges indicating internal damage
● A tire goes flat repeatedly or cannot be properly repaired due to the size or
location of a cut or other damage
If you are not sure, consult with any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
■ Tire life
Any tire over 6 years old must be checked by a qualified technician even if it
has seldom or never been used or damage is not obvious.
■ Low profile tires (vehicles with 165/60R15 tires)
Generally, low profile tires will wear more rapidly and tire grip performance
will be reduced on snowy and/or icy roads when compared to standard tires.
Be sure to use snow tires or tire chains on snowy and/or icy roads and drive
carefully at a speed appropriate for road and weather conditions.
■ If the tread on snow tires wears down below 4 mm (0.16 in.)
The effectiveness of the tires as snow tires is lost.
Your vehicle is equipped with a tire pressure warning system.
While the vehicle is in motion, the system monitors the fluctuations in
the wheel speed signals that are output by the speed sensor for the
brake control system.
It informs the driver if it detects a low tire inflation pressure.
◆Initializing the tire pressure warning system
■The tire pressure warning system must be initialized when
changing the tire
When the tire pressure warning system is initialized, the current tire
inflation pressure is set as the benchmark pressure.
■The initialization operation
● Make sure to carry out initialization after adjusting the tire infla-
tion pressure. Also, make sure the tires are cold before carrying
out initialization or tire inflation pressure adjustment.
● If you accidentally press the reset switch when initialization is not
necessary, adjust the tire inflation pressure to the specified level
when the tires are cold, and conduct initialization again.
Tire pressure warning system (if equipped)

3747-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
■How to initialize the tire pressure warning system
Park the vehicle in a safe place and turn the engine switch to the
“LOCK” position (vehicles without a smart entry & start system)
or off (vehicles with a smart entry & start system).
Initialization cannot be performed while the vehicle is moving.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. ( P. 480)
Make sure to adjust the tire pressure to the specified cold tire inflation
pressure level. The tire pressure warning system will operate based on
this pressure level.
Turn the engine switch to the “ON” position (vehicles without a
smart entry & start system) or IGNITION ON mode (vehicles with
a smart entry & start system).
Press and hold the tire pres-
sure warning reset switch
until the tire pressure warn-
ing light blinks slowly 3 times.
■ Situations in which the tire pressure warning system may not operate
properly (if equipped)
● This tire pressure warning system ensure a proper function when OE (Origi-
nal Equipment) tire is installed.
● In the following cases, the tire pressure warning system may not operate
properly.
• The vehicle uses non-standard size tires or tires made by other manufac-
turers.
• The vehicle uses tire of different size or manufacturers.
• The vehicle uses snow tires, compact spare tire (if equipped) or tire
chains.
• The vehicle is being driven below approximately 40 km/h (25 mph).
• The vehicle is being driven on slippery or rough road surfaces.
● When tire inflation pressure declines rapidly for example when a tire has
burst, the warning may not function.

3757-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99R19E
WARNING
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train as well as
dangerous handling characteristics, which may lead to an accident resulting
in death or serious injury.
● Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
● Do not use tire sizes other than those recommended by Toyota.
● Do not mix differently constructed tires (radial, bias-belted or bias-ply
tires).
● Do not mix summer, all season and snow tires.
● Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
● Vehicles with a compact spare tire: Do not tow if your vehicle has a com-
pact spare tire installed.
● Vehicles with an emergency tire puncture repair kit: Do not tow anything if
a tire that has been repaired using the emergency tire puncture repair kit is
installed. The load on the tire may cause unexpected damage to the tire.
■ When initializing the tire pressure warning system (if equipped)
Do not operate the tire pressure warning reset switch without first adjusting
the tire inflation pressure to the specified level. Otherwise, the tire pressure
warning light may not come on even if the tire inflation pressure is low, or it
may come on when the tire inflation pressure is actually normal.

501Alphabetical index
AYGO_OM_Europe_OM99R19E
LDA (Lane Departure Alert) switch.................................. 232
Light switches ....................... 199
Outside rear view mirror switches.............................. 161
Paddle shift switches ............ 191
PCS (Pre-Collision system) switch .................... 222
Power window switch ............ 163
Rear window and outside rear view mirror
defoggers switch......... 322, 328
Rear window wiper and washer switch ..................... 207
Seat heater switch ................ 332
Speed limiter ......................... 237
Stop & Start cancel switch .... 241
Telephone switches
*.... 291, 295
Tire pressure warning reset switch......................... 373
VSC off switch....................... 248
Windshield wipers and washer switch ..................... 205 Tachometer .............................. 102
Tail lights .................................. 199
Light switch ........................... 199
Replacing light bulbs............. 400
Wattage ................................ 482
Telephone switches
*...... 291, 295
Theft deterrent system Engine immobilizer system ..... 76
Tire inflation pressure ............. 378 Maintenance data ................. 480
Warning light ......................... 422
Tire pressure warning system .................................... 373Function ................................ 373
Initializing .............................. 373
Tire pressure warning reset switch ................................. 374
Warning light ......................... 422
Tires .......................................... 372 Chains................................... 253
Checking ............................... 372
If you have a flat tire ..... 427, 442
Inflation pressure .................. 480
Replacing ...................... 427, 442
Rotating tires......................... 372
Size ....................................... 480
Snow tires ............................. 255
Spare tire .............................. 442
Tire pressure warning system ................................ 373
Warning light ......................... 422
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*: For vehicles with a multimedia system , refer to “Multimedia owner’s manual”.