
4246-3. Do-it-yourself maintenance
◆Installing tire pressure warning valves 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.
● Vehicles  with  a  tire  inflation  pr essure  display  function: After per-
forming the transmitter ID code registration procedure. ( P.   4 2 6 )
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 stop the hybrid system for 20
minutes or more.
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 hybrid system. ( P.   2 0 8 )
Select    (4.2-inch  display)  or    (7-inch  display)  on  the  multi-
information display using the meter control switches on the ste er-
ing wheel. ( P. 111, 125).
4.2-inch display: Select “Vehi cle Settings” and then press  .
7-inch display: Select    and then press and hold  .
Select “TPWS” and then press  .
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4306-3. Do-it-yourself maintenance
■Situations  in  which  the  tire  pressure  warning  system  may  not  oper-
ate properly
●In  the  following  situations,  the  tire  pressure  warning  system  m ay  not
operate properly.
• If non-genuine Toyota wheels are used. 
• If  a  tire  has  been  replaced  with  a  tire  that  is  not  an  OE  (Ori ginal
Equipment) tire.
• If a tire has been replaced with a tire that is not of the spe cified size.
• If tire chains, e tc. are installed.
• If a window tint that affects r adio wave signals is installed.
• 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 much higher than the specifi ed level.
• If wheels not equipped with tire pressure warning valve and tr ansmit-
ter are used.
• If the ID codes of the tire pre ssure warning valve and transmi tters are
not registered in the tire  pressure warning computer.
●Performance may be affected in the following situations.
• When driving near a TV tower, electric power plant, gas statio n, radio
station,  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
Vehicles  with  a  tire  inflation  pressure  display  function:  If  ti re  position
information is not correctly displayed due to the radio wave co nditions,
the display may be corrected by changing the location of the ve hicle as
the radio wave conditions may change.
●When  the  vehicle  is  stopped,  the  time  taken  for  the  warning  to  start  or
turn off may be longer.
●When  the  inflation  pressure  of  a  tire  drops  rapidly,  for  exampl e  when  a
tire has burst, the warning may not operate. 

4476-3. Do-it-yourself maintenance
6
Maintenance and care
■Scheduled maintenance of the air intake vent is necessary when
In  some  situations  such  as  when  the  vehicle  is  used  frequently  or  in  heavy
traffic or dusty areas, the air intake vent may need to be clea ned more regu-
larly.  For details, refer  to “Schedule maintenance  guide” or  “O wner’s  Manual
Supplement”.
■ Cleaning the air intake vent
●Dust in the air intake vent may interfere with the cooling of t he hybrid battery
(traction  battery).  If  charging/discharging  of  the  hybrid  batte ry  (traction  bat-
tery) becomes limited, the distance that the vehicle can be dri ven using the
electric  motor  (traction  motor)  may  be  reduced  and  the  fuel  eco nomy  may
be reduced. 
Inspect and clean the air intake vent periodically.
● Improper  handling  of  the  air  intake  vent  cover  and  filter  may  result  in  dam-
age to them. If you have any concerns about cleaning the filter , contact your
Toyota dealer.
■ If “Maintenance Required for Traction Battery Cooling Parts See  Owner’s
Manual” is displayed on the multi-information display
● If  this  warning  message  is  displayed  on  the  multi-information  d isplay,
remove the air intake vent cover and clean the filter. ( P. 444)
● After cleaning the air intake vent, start the hybrid system and check that the
warning message is no longer displayed. 
After  the  hybrid  system  is  started,  it  may  be  necessary  to  drive  the  vehicle
up to approximately 20 minutes before the warning message disap pears. If
the  warning  message  does  not  disappear  after  driving  for  approp riately  20
minutes, have the vehicle inspected by your Toyota dealer.
WARNING
■When cleaning the air intake vent
● Do  not  use  water  or  other  liquids  to  clean  the  air  intake  vent.   If  water  is
applied to the hybrid battery (traction battery) or other components, a mal-
function or fire may occur.
● Before cleaning the air intake vent, make sure to turn the power switch off
to stop the hybrid system.
■
When removing the air intake vent cover
Do not touch the service plug located near the air intake vent. ( P. 86) 

467
7When trouble arises
7-1.  Essential informationEmergency flashers .......... 468
If your vehicle has to be stopped in 
an emergency ................. 469
If the vehicle is trapped  in rising water.................. 470
7-2.  Steps to take in  an emergency
If your vehicle needs  to be towed ..................... 471
If you think something  is wrong .......................... 474
If a warning light turns  on or a warning buzzer 
sounds ............................ 475
If a warning message  is displayed ..................... 485
If you have a flat tire.......... 491
If the hybrid system  will not start ..................... 502
If the electronic key  does not operate 
properly ........................... 504
If the 12-volt battery  is discharged ................... 507
If your vehicle  overheats ........................ 514
If the vehicle becomes  stuck ............................... 518 

4887-2. Steps to take in an emergency
■If “Hybrid System Overheated Output Power Reduced” is shown
This message may be displayed when driving under severe operati ng condi-
tions. (For example, when driving up a long steep hill.)
Handling method:  P. 514
■ If “Maintenance Required for Traction Battery Cooling Parts See  Owner’s
Manual” is shown
The filter may be clogged, the air intake vent may be blocked or there may be
a gap in the duct.
● If the air intake vent or filter is dirty, refer to P. 444 for  cleaning the air intake
vent and filter.
● If  the  message  is  being  displayed  and  the  air  intake  vent  and  f ilter are not
dirty, have the vehicle inspected at your Toyota dealer.
■ If  “Traction  Battery  Needs  to  be  Protected  Refrain  From  the  Use of N
Position” is shown
This message may be displayed when the shift lever is in N.
As the hybrid battery (traction battery) cannot be charged when  the shift lever
is in N, shift the shift lever to P when the vehicle is stopped .
■ If  “Traction  Battery  Needs  to  be  Protected  Shift  into  P  to  Rest art”  is
shown
This  message  is  displayed  when  the  hybrid  battery  (traction  battery)  charge
has become extremely low because the shift lever has been left  in N for a cer-
tain amount of time.
When operating the vehicle, shift to P and restart the hybrid s ystem.
■ If “Shift to P Before Exiting Vehicle” is shown
Message  is  displayed  when  the  driver’s  door  is  opened  without  t urning  the
power switch off with the shift lever in any position other tha n P.
Shift the shift lever to P.
■ If “Shift Is in N Release Accelerat or Before Shifting” is shown
Message  is  displayed  when  the  accelerator  pedal  has  been  depressed  and
the shift lever is in N. Release the accelerator pedal and shif t the shift lever to
D or R.
■ If “Press Brake When Vehicle Is Stopped Hybrid System May Overh eat”
is shown
Message  is  displayed  when  the  accelerator  pedal  is  depressed  to   maintain
the vehicle position when stopped on a upward slope, etc.
If this continues, the hybrid system may overheat.
Release the accelerator pedal and depress the brake pedal. 

4907-2. Steps to take in an emergency
■If “Maintenance Required Visit Your Dealer” is displayed
Indicates that all maintenance is required to correspond to the  driven distance
on the maintenance schedule
*.
Comes on approximately 5000 miles (8000 km) after the message has been
reset.
(The indicator will not work properly unless the message has been reset.)
Perform  the  necessary  maintenance.  Please  reset  the  message  aft er  the
maintenance is performed. ( P. 399)
*: Refer to the separate “Scheduled Maintenance Guide” or “Owner’ s Manual
Supplement” for the maintenance interval applicable to your veh icle.
■ If “Engine Oil Level Low Add or Replace” is displayed
The  engine  oil  level  may  be  low.  Check  the  level  of  the  engine  oil,  and  add
engine  oil  if  necessary.  This  message  may  be  displayed  if  the  vehicle  is
stopped on a slope. Move the vehicle to a level surface and che ck if the mes-
sage disappears.
■ Warning buzzer
P. 481
NOTICE
■It “High Power Consumption Power  to Climate Temporarily Limited” is
frequently shown
There  is  a  possible  malfunction  relating  to  the  charging  system   or  the  12-
volt battery may be deteriorating. Have the vehicle inspected b y your Toyota
dealer.
■ If “Have Traction Battery Inspected” is shown (AXVH70 model
*)
The  hybrid  battery  (traction  battery)  is  scheduled  to  be  inspected  or
replaced. Have the vehicle inspected by your Toyota dealer imme diately.
● Continuing  to  drive  the  vehicle  without  having  the  hybrid  batte ry  (traction
battery) inspected will cause the hybrid system not to start.
● If  the  hybrid  system  does  not  start,  contact  your  Toyota  dealer   immedi-
ately.
*: The model code is indicated on the Certification Label. ( P. 523) 

5067-2. Steps to take in an emergency
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you no rmally do when
stopping the hybrid system.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommende d that the
electronic key battery be replaced immediately when the battery is depleted.
( P. 449)
■ Changing power switch modes
Release the brake pedal and press the power switch in step   abo ve.
The  hybrid  system  does  not  start  and  modes  will  be  changed  each  time the
switch is pressed. ( P. 210)
■ When the electronic key does not work properly
●Make  sure  that  the  smart  key  system  has  not  been  deactivated  in   the  cus-
tomization setting. If it is off, turn the function on. 
(Customizable features:  P. 547)
● Check if battery-saving mode is set. If it is set, cancel the f unction. 
( P. 166)
WARNING
■ When  using  the  mechanical  key  and  operating  the  power  windows  o r
moon roof 
Operate  the  power  window  or  moon  roof  after  checking  to  make  su re  that
there  is  no  possibility  of  any  passenger  having  any  of  their  body  parts
caught  in  the  window  or  moon  roof. Also,  do  not  allow  children  to  operate
the  mechanical  key.  It  is  possible  for  children  and  other  passe ngers  to  get
caught in the power window or moon roof.
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5157-2. Steps to take in an emergency
7
When trouble arises
The coolant level is satisfactory
if  it  is  between  the  “F”  and  “L”
lines on the reservoir.Reservoir
“F” line
“L” line
Radiator cap
Add coolant if necessary.
Water  can  be  used  in  an  emer-
gency if coolant is unavailable.
Start  the  hybrid  system  and  turn  the  air  conditioning  system  on  to
check  that  the  radiator  cooling  fan  operates  and  to  check  for  c ool-
ant leaks from the  radiator or hoses.
The  fan  operates  when  the  air  conditioning  system  is  turned  on  immedi-
ately after a cold start. Confirm that the fan is operating by  checking the fan
sound  and  air  flow.  If  it  is  difficult  to  check  these,  turn  the   air  conditioning
system  on  and  off  repeatedly.  (The  fan  may  not  operate  in  freez ing  tem-
peratures.)
If the fan is not operating: 
Stop the hybrid system immediatel y and contact your Toyota dealer.
If the fan is operating: 
Have the vehicle ins pected at the nearest Toyota dealer.
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