display TOYOTA 4RUNNER 2021 (in English) Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2021, Model line: 4RUNNER, Model: TOYOTA 4RUNNER 2021Pages: 592, PDF Size: 13.3 MB
Page 425 of 592

4256-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)
◆Installing tire pressure warning valve and transmitters
When replacing the tires or wheels, the tire pressure warning v alve
and  transmitters  must  be  install ed  to  the  wheels  which  will  be
installed to the vehicle.
When  new  tire  pressure  warning  valve  and  transmitters  are
installed,  new  ID  codes  must  be  registered  in  the  tire  pressure
warning  computer  and  the  tire  pressure  warning  system  must  be
initialized. ( P. 426)
◆Initializing the tire pressure warning system
■The tire pressure warning system  must be initialized in the fol-
lowing circumstances:
● When the tire inflation pressure is changed such as when chang-
ing traveling speed  or load weight.
● When the tire inflation pressure is changed such as when the ti re
size is changed.
● When rotating the tires.
● After  performing  the  transmitter  ID  code  registration  procedure .
(  P. 426)
When the tire pressure warning sy stem is initialized, the current tire
inflation pressure is set  as the benchmark pressure.
■How to initialize the tire pressure warning system
Park the vehicle in a  safe place and turn the engine switch off .
The  initialization  procedure  cannot  be  started  while  the  vehicle  is
moving.
Adjust the tire inflation pressure to the specified cold tire i nflation
pressure level. ( P. 528)
Make  sure  to  adjust  the  tire  pre ssure  to  the  specified  cold  tire infla-
tion  pressure  level.  The  tire  pressure  warning  system  will  oper ate
based on this pr essure level.
Start the engine. ( P. 209, 212)
Select    on  the  multi-information  display  using  the  meter  con-
trol switches on the steering wheel. ( P.   9 6 )
Select “Vehicle Settings” and then press and hold  .
Select “TPWS” and then press  .
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Page 426 of 592

4266-3. Do-it-yourself maintenance
4RUNNER (U)
Select  “Set  Pressure”  then
press  and  hold    until  the
tire  pressure  warning  light
blinks 3 times.
Then  a  message  will  be  dis-
played on the multi-information
display.
“---”  will  be  displayed  on  the
multi-information  display  for
the  inflation  pressure  of  each
tire  while  initialization  is  being
performed.
Drive  straight  (with  occasional  left  and  right  turns)  at  approxi-
mately 25 mph (40 km/h) or more for approximately 10 to 30 min-
utes.
Initialization is complete when the position of each tire is determined
and the inflation pressure of ea ch tire is displayed on the multi-infor-
mation display.
Initialization  may  ta ke  longer  than  approximately  1  hour  in  cer tain
situations,  such  as  when  the  veh icle  is  stopped  for  a  long  time at
traffic lights, etc. ( P. 431)
◆Registering ID codes
Every  tire  pressure  warning  valve  and  transmitter  has  a  unique  ID
code. When replacing a tire pressure warning valve and transmit ter,
it is necessary to reg ister the ID codes. 
The ID codes can be registered on   of the multi-information dis -
play.
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Page 427 of 592

4276-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)■
How to register the ID codes
Select    on  the  multi-information  display  using  the  meter  con-
trol switches on the steering wheel. ( P.   9 6 )
Select “Vehicle Settings” and then press and hold  .
Select “TPWS” and then press  .
Select  “Change  Wheel  Set”
then press and hold   until
the  tire  pressure  warning
light blinks slowly 3 times.
Then  a  message  will  be  dis-
played on the multi-information
display.
When registration is being per-
formed, the tire pressure warn-
ing  light  will  blink  for
approximately  1  minute  then
illuminate  and  “---”  will  be  dis-
played  for  the  inflation  pres-
sure  of  each  tire  on  the  multi-
information display.
Drive  straight  (with  occasional  left  and  right  turns)  at  approxi-
mately 25 mph (40 km/h) or more for approximately 10 to 30 min-
utes.
Registration  is  complete  when  the  tire  pressure  warning  light  t urns
off  and  the  inflation  pressure  of  each  tire  is  displayed  on  the multi-
information display.
Registration  may  take  longer  than  approximately 1 hour in certain
situations,  such  as  when  the  veh icle  is  stopped  for  a  long  time at
traffic lights, etc. ( P. 432)
After  registering  the  ID  codes,  make  sure  to  initialize  the  tir e  pres-
sure warning system. ( P. 425)
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Page 430 of 592

4306-3. Do-it-yourself maintenance
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 431 of 592

4316-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)■
The initialization operation
●Make sure to carry out initializ
ation after adjusting the tire inflation pres-
sure.
Also, make sure the tires are co ld before carrying out initialization or tire
inflation pressure adjustment.
●If you have accidentally turned  the engine switch to the “LOCK”  position
(vehicles  without  a  smart  key  system)  or  off  (vehicles  with  a  s mart  key
system) during initialization, it  is not necessary to press the reset switch
again  as  initialization  will  rest art  automatically  when  the  engine  switch
has been turned to the “ON” posi tion (vehicles without a smart key sys-
tem) or IGNITION ON mode (vehicl es  with  a  smart  key  system)  for the
next time.
●If you accidentally press the reset switch when initialization  is not neces-
sary,  adjust  the  tire  inflation  pressure  to  the  specified  level   when  the
tires are cold, and cond uct initialization again.
●While the position of each tire is being determined and the inf lation pres-
sures  are  not  being  displayed  on  the  multi-information  display,   if  the
inflation pressure of a tire drops, the tire pressure warning l ight will come
on.
■When initialization of the tire  pressure warning system has fai led
●Do  not  move  the  vehicle  backward   during  initialization.  Initialization  is
started again from the beginning  and it may take longer than usual.
●Initialization  may  take  longer  to   complete  if  the  vehicle  is  driven  on  an
unpaved road.
When  performing  initialization,  drive  on  a  paved  road  if  possib le.
Depending  on  the  driving  environment  and  condition  of  the  tires ,  initial-
ization will be complet ed in approximately 10 to 30 minutes.
• If initialization is not complet e after driving approximately 30 minutes,
continue driving for a while.
• If initialization is not complet e after driving approximately 1 hour, park
the  vehicle  in  a  safe  place  for  approximately  20  minutes. Then  drive
straight (with occasional left a nd right turns) at approximatel y 25 mph
(40 km/h) or more
* for approximately 10 to 30 minutes.
• If initialization is still not co mplete, have the vehicle inspected by your
Toyota dealer.
*: Except when making a left/right turn
●In the following situations, the tire inflation pressure will n ot be recorded
and the system will not operate p roperly. Perform initialization again.
• When  operating  the  tire  pressure  warning  reset  switch,  the  tir e  pres-
sure warning light does not blink 3 times.
• After performing initialization,  the tire pressure warning light blinks for
1 minute then stays  on after driving for about 20 minutes. 
Page 461 of 592

461
When trouble arises7
4RUNNER (U)7-1.  Essential information
Emergency flashers .......... 462
If your vehicle has to be stopped in an 
emergency ...................... 463
If the vehicle is trapped in  rising water ..................... 465
7-2.  Steps to take in an  emergency
If your vehicle needs to be  towed .............................. 466
If you think something is  wrong .............................. 472
Fuel pump shut off  system ............................ 473
If a warning light turns  on or a warning buzzer 
sounds ............................ 474
If a warning message is  displayed......................... 484
If you have a flat tire.......... 489
If the engine will not  start ................................. 504
If you cannot operate  back door opener ............ 506
If the electronic key does  not operate properly 
(vehicles with a smart 
key system)..................... 507
If the vehicle battery is  discharged ...................... 510
If your vehicle  overheats ........................ 514
If the vehicle becomes  stuck ............................... 517 
Page 477 of 592

4777-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
Low fuel level warning lightIndicates remaining fuel is approximately 3.5 gal. (13.1
L, 2.9 Imp. gal.) or less
 Refuel the vehicle.
Seat belt reminder light (warning buzzer)*3
Warns the driver and/or front passenger to fasten their
seat belts
 Fasten the seat belt.
If the front passenger’s s eat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (wa rning buzzer) turn off.
Brake  Override  System/Drive- Start  Control  warning
light (warning buzzer)
*4
When a buzzer sounds:
• Brake Override System is malfunctioning;
• Drive-Start Control is operating;
• Drive-Start Control is malfunctioning; or
 Follow  the  instructions  displayed  on  the  multi-
information display.
When a buzzer does not sound:
Brake Override System is operating
 Release  the  accelerator  pedal  and  depress  the
brake pedal.
(Flashes)
(U.S.A.)
(Flashes)
(Canada)Parking brake indicator (warning buzzer)*1
Indicates that the parking brake is engaged
 Release the parking brake.
Warning lightWarning light/Details/Actions 
Page 478 of 592

4787-2. Steps to take in an emergency
4RUNNER (U)
(Flashes or 
illuminates)
PCS warning light
When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-
Collision System).
 Have  the  vehicle  inspected  by your  Toyota  dealer
immediately.
When a buzzer does not sound: 
The  PCS  (Pre-Collision  System)  has  become  tempo-
rarily unavailable, corrective action may be necessary.
 Follow  the  instructions  displayed  on  the  multi-
information display. ( P. 251, 484)
If the PCS (Pre-Collision System) or VSC (Vehicle Sta-
bility  Control)  system  is  disabled,  the  PCS  warning
light will illuminate.
 P. 263
(Amber)
LDA indicator*4
Indicates a malfunction in the LDA
 When  “LDA  Unavailable”  is  displayed  on  the
multi-information  display,  turn  the  LDA  system
off,  wait  for  a  little  while,  and  then  turn  the  LDA
system back on. ( P. 267) 
When  a  message  other  than  above  is  displayed,
follow the instructions  displayed in the message.
Master warning light
A  buzzer  sounds  and  warning  light  comes  on  flashes
to  indicate  that  the  master  warning  system  has
detected a malfunction.
 P. 484
Tire pressure warning light
When the light comes on: 
Low tire inflation pressure such as
• Natural causes ( P.   4 8 0 )
• Flat tire ( P. 489)
 Adjust  the  tire  inflation  pressure  (including  the
spare tire) to the specified level. 
The light will turn off after a few minutes. In
case  the  light  does  not  turn  off  even  if  the  tire
inflation  pressure  is  adjusted,  have the  system
checked by your Toyota dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire p ressure warning system 
(  P.   4 8 1 )
 Have  the  system  checked  by  your  Toyota
dealer.
Warning lightWarning light/Details/Actions 
Page 479 of 592

4797-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
*1: Parking brake engaged warning buzzer:A  buzzer  will  sound  if  the  vehicle  is  driven  at  a  speed  of  appr oximately  3
mph (5 km/h) or more.
*2: Open door warning buzzer: The open  door warning  buzzer sounds  to alert  one or  more  of the   doors  is
not fully closed (with the vehicle having reached a speed of 3  mph [5 km/h]).
*3: Driver’s seat belt buzzer:
The driver's seat belt warning buzzer sounds to  alert the  drive r that his  or
her seat  belt is not  fastened.  Once the  engine switch is turned  to  ON, the
buzzer sounds. If the seat belt is still unfastened, the buzzer  sounds inter-
mittently  for  a  certain  period  of  time  after  the  vehicle  reache s  a  certain
speed.
Front passenger’s seat belt warning buzzer:
The  front  passenger’s  seat  belt  warning  buzzer  sounds  to  alert  the  front
passenger that his or her seat belt is not fastened. If the sea t belt is unfas-
tened, the buzzer sounds intermittently for a certain period of time after the
vehicle reaches a certain speed.
*4: This light illuminates on the multi-information display.
■ SRS warning light
This  warning  light  system monitors  the  airbag  sensor  assembly,  front  impact
sensors,  side  impact  sensors  (front  door),  side  impact  sensors  (rear),  safing
sensor (rear), driver's seat belt buckle switch, front passenger occupant clas-
sification  system  (ECU  and  sensors),  “AIR  BAG  ON”  and  “AIR  BAG  OFF”
indicator  lights,  front  passenger's  seat  belt  buckle  switch,  se at  belt  preten-
sioners, airbags, interconnecting wiring and power sources. (P.   3 5 )
■ Key reminder buzzer (vehicles without a smart key system)
The  buzzer  indicates  that  the  key  has  not  been  removed  with  the  engine  off
and the driver’s door opened.
■ Open moon roof reminder buzzer (if equipped)
The buzzer indicates that the moon roof is not fully closed with the engine off
and the driver’s door opened.
■ Front  passenger  detection  senso r,  passenger  seat  belt  reminder and
warning buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause  the warning light to  flash and the warnin g  buzzer  to
sound even if a passenger is not sitting in the seat.
● If  a  cushion  is  placed  on  the  seat,  the  sensor  may  not  detect  a  passenger,
and the warning light may not operate properly. 
Page 484 of 592

4847-2. Steps to take in an emergency
4RUNNER (U)
Master warning light
The  master  warning  light  also
comes  on  or  flashes  in  order  to
indicate  that  a  message  is  cur-
rently being displayed on the multi-
information display.
Multi-information display
Handling method
Follow  the  instructions  of  the  mes-
sage  on  the  multi-information  dis-
play.
If  any  of  the  warning  messages  are  shown  again  after  the  following
actions have been performed, contact your Toyota dealer.
If  a warning message is displayed
The  multi-information  display  shows  warnings  of  system  mal-
functions, incorrectly performed  operations, and messages that
indicate  a  need  for  maintena nce.  When  a  message  is  shown,
perform the correction procedur e appropriate to the message.
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