Page 435 of 616
4356-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)
Check if the treadwear indicators are showing on the tires. Also check
the tires for uneven wear, such as excessive wear on one side o f the
tread.
Check the spare tire condition and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicators is shown by a “TWI” or “ ” mark,
etc., molded into the s idewall of each tire.
Replace the tires if the treadwear indicators are showing on a tire.
Tires
Replace or rotate tires in accordance with maintenance sched-
ules and treadwear.
Checking tires
1
2
3
Page 443 of 616

4436-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)■
Situations in which the tire pressure warning system may not op
er-
ate properly
●In the following cases, the tire pressure warning system may no t operate
properly.
• If non-genuine Toyota wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equip-
ment) tire.
• A tire has been replac ed with a tire that is not of the specif ied size.
• Tire chains etc . are equipped.
• If a window tint that affects the radio wave signals is instal led.
• If there is a lot of snow or ice on the vehicle, particularly around the
wheels or wheel housings.
• If the tire inflation pressure is extremely higher than the sp ecified
level.
• If the spare tire is in a location subject to poor radio wave signal
reception.
• If a large metallic object whic h can interfere with signal reception is
put near the spare tire.
• If tires not equipped with the tire pressure warning valves an d trans-
mitters are used.
• If the ID code on the tire pressure warning valves and transmi tters is
not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio stat ion, large
display, airport or other facilit y that generates strong radio waves or
electrical noise
• When carrying a portable radio, cellular phone, cordless phone or
other wireless communication device
●When the vehicle is parked, the time taken for the warning to s tart or go
off could be extended.
●When tire inflation pressure declines rapidly for example when a tire has
burst, the warning may not function.
Page 503 of 616
5037-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
Spare tire
Jack
Tool bag
Location of the spare tire, jack and tools
1
2
3
Page 600 of 616

600Alphabetical index
4RUNNER (U)
Seats ................................. 135, 138Adjustment .................... 135, 138
Adjustment
precautions ................. 137, 147
Child seats/child restraint
system installation . ............... 59
Cleaning................................ 408
Driving position memory ....... 148
Head restraints ..................... 152
Properly sitting in the seat ...... 30
Seat heaters ......................... 367
Seat position memory ........... 148
Seat ventilators ..................... 367
Sensor
Automatic headlight system ......... ....................... 226
Inside rear view mirror .......... 158
Intuitive parking assist .......... 288
Service reminder indicators ..... 84
Shift lever ................................. 216 Automatic transmission......... 216
If the shift lever cannot be shifted from P .... 219 Shift lock system ..................... 218
Side airbags ............................... 37
Side marker lights ................... 223
Light switch ........................... 223
Replacing light bulbs ............ 467
Wattage ................................ 541
Side mirrors ............................. 159 Adjusting and folding ............ 159
Side turn signal lights ............. 221
Slide deck................................. 382
Smart key system .................... 119 Antenna location ................... 119
Entry functions ...................... 110
Starting the engine ............... 210
Snow tires ................................ 345
Spare tire .................................. 502 Inflation pressure .................. 540
Storage location.................... 503
Spark plug ................................ 536
Specifications .......................... 532
Speedometer.............................. 90
Steering lock ............................ 208 Column lock release ............. 208
Steering wheel ......................... 155 Adjustment............................ 155
Storage feature ........................ 372
Storage precautions................ 187
Stuck If the vehicle becomes stuck ................................... 530
Sun visors ................................ 384