
3946-2. Maintenance
The OBD system determines 
that a problem exists some-
where in the emission control 
system. Your vehicle may not 
pass the I/M test and may need 
to be repaired. Contact your 
Toyota dealer to service the 
vehicle.
When the 12-volt battery is 
disconnected or discharged
Readiness codes that are set 
during ordinary driving are 
erased. 
Also, depending on your driv-
ing habits, the readiness 
codes may not be completely 
set.
 When the fuel tank cap is 
Vehicle exterior
ItemsCheck points
Doors
• Do the doors 
operate 
smoothly?
Engine hood
• Does the engine hood lock system 
work properly?
Fluid leaks
• There should not be any signs of 
fluid leakage 
after the vehicle 
has been parked.
Tires
• Is the tire infla-tion pressure 
correct?
• The tires should  not be damaged 
or excessively 
worn.
• Have the tires  been rotated 
according to the 
maintenance 
schedule?
• The wheel nuts  should not be 
loose.
Windshield 
wipers/rear 
window wiper
• The wiper blades should not show 
any signs of 
cracking, split-
ting, wear, con-
tamination or 
deformation.
• The wiper blades  should clear the 
windshield/rear 
window without 
streaking or skip-
ping.
Emission inspection 
and maintenance (I/M) 
programs
Some states have vehicle 
emission inspection pro-
grams which include OBD 
(On Board Diagnostics) 
checks. The OBD system 
monitors the operation of 
the emission control sys-
tem.
If the malfunction indica-
tor lamp comes on
Your vehicle may not 
pass the I/M test in the fol-
lowing situations: 

4076-3. Do-it-yourself maintenance
6
Maintenance and care
The 12-volt battery is located in 
the right-hand side of luggage 
compartment.
■Before recharging
When recharging, the 12-volt bat-
tery produces hydrogen gas which 
is flammable and explosive. There-
fore, observe the following precau-
tions before recharging:
●If recharging with the 12-volt bat-
tery installed on the vehicle, be 
sure to disconnect the ground 
cable.
●Make sure the power switch on 
the charger is off when connecting 
and disconnecting the charger 
cables to the 12-volt battery.
■After recharging/reconnecting 
the 12-volt battery (vehicles 
with smart key system)
●Unlocking the doors using the 
smart key system may not be pos-
sible immediately after reconnect-
ing the 12-volt battery. If this 
happens, use the wireless remote 
control or the mechanical key to 
lock/unlock the doors.
●Start the hybrid system with the 
power switch in ACC. The hybrid 
system may not start with the 
power switch turned off. How-
ever, the hybrid system will oper- ate normally from the second 
attempt.
●The power switch mode is 
recorded by the vehicle. If the 12-
volt battery is reconnected, the 
vehicle will return the power 
switch mode to the status it was in 
before the 1
2-volt battery was dis-
connected. Make sure to turn off 
the power switch before discon-
nect the 12-volt battery. Take 
extra care when connecting the 
12-volt battery if the power switch 
mode prior to discharge is 
unknown.
If the hybrid system will not start 
even after multiple attempts at all 
methods above, contact your 
Toyota dealer.
12-volt battery
Location
WARNING
■Chemicals in the 12-volt bat-
tery
The 12-volt battery contains poi-
sonous and corrosive sulfuric acid 
and may produce hydrogen gas 
which is flammable and explosive. 
To reduce the risk of death or 
serious injury, take the following 
precautions while working on or 
near the 12-volt battery:
●Do not cause sparks by touch-
ing the 12-volt battery terminals 
with tools.
●Do not smoke or light a match 
near the 12-volt battery.
●Avoid contact with eyes, skin 
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses 
when working near the 12-volt 
battery.
●Keep children away from the 
12-volt battery. 

4436-3. Do-it-yourself maintenance
6
Maintenance and care
■Rear turn signal lights
1 Open the back door and 
remove the cover.
2 Remove the screws and 
remove the unit.
Remove the lamp assembly by pull-
ing it directly backward from the 
rear of the vehicle.
3Turn the bulb base counter-
clockwise. 4
Remove the light bulb.
5 Install a new light bulb then 
install the bulb base to the 
light unit by inserting it and 
turning the bulb base clock-
wise.
6 Align the grooves on the light 
unit with the claws, and insert 
the light unit straight so that 
the pin on the light unit fit into 
the hole.
Confirm that the light unit is com- 

4446-3. Do-it-yourself maintenance
pletely secured.
7Reinstall the screws.
8 Reinstall the cover.
■Back-up lights
1 Open the back door and 
remove the cover.
To prevent damag e to the cover, 
protect the tip of the screwdriver  with a rag.
2
Turn the bulb base counter-
clockwise.
Remove the cord from the clip 
before turning the bulb base.
3Remove the light bulb. 

4677-2. Steps to take in an emergency
7
When trouble arises
systems such as PCS (Pre-Colli-
sion system) or the dynamic radar 
cruise control with full-speed 
range is operating. If a warning 
message is shown, be sure to 
decelerate the vehicle or follow 
the instruction sh own on the multi-
information display.
• A warning message is shown 
when Brake Override System 
operates. ( P.196)
• A warning message is shown 
when Drive-Start Control or Park-
ing Support Brake (if equipped) 
( P.201, 312) operates. Follow 
the instructions o n the multi-infor-
mation display.
●If a message about an operation 
of the power switch is shown (if 
equipped)
An instruction for  operation of the 
power switch is shown when the 
incorrect procedure  for starting the 
hybrid system is performed or the 
power switch is operated incorrectly. 
Follow the instructions shown on the 
multi-information  display to operate 
the power switch again.
●If a message abou t a shift lever 
operation is shown
To prevent the shift lever from being 
operated incorrectly or the vehicle 
from moving unexpectedly, a mes-
sage that requires  shifting the shift 
lever may be sho wn on the multi-
information display. In that case, fol-
low the instruction of the message 
and shift the shift lever.
●If a message or image about an 
open/close state of a part or 
replenishment of a consumable is 
shown
Confirm the part indicated by the 
multi-information  display or a warn-
ing light, and then perform the cop-
ing method such as closing the 
open door or replenishing a con- sumable.
■If a message that indicates the 
need for visiting your Toyota 
dealer is displayed
The system or part shown on the 
multi-information di splay is malfunc-
tioning. Have the vehicle inspected 
by your Toyota dea ler immediately.
■If a message that indicates the 
need for referring to Owner’s 
Manual is displayed
●If the following messages are 
shown, there may be a malfunc-
tion.
Immediately have the vehicle 
inspected by your Toyota dealer.
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery  System Malfunc-
tion”
• “Accelerator System Malfunction”
• “Smart Key System Malfunction”
• “Engine Coolant Temp High”  ( P.490)
●If the following messages are 
shown, there may be a malfunc-
tion.
Immediately stop the vehicle in a 
safe place and contact your Toyota 
dealer. Continuing to drive the vehi-
cle may be dangerous.
• “Oil Pressure Low”
• “Braking Power Low”
●If “Maintenance Required for Trac-
tion Battery Cooling Parts See 
Owner’s Manual” is shown, the fil-
ter may be clogged, the air intake 
vent may be blocked, or there may 
be a gap in the duct. Therefore, 
perform the follo wing correction 
procedure.
• Cleaning the hybrid battery (trac- tion battery) air intake vents 
( P.426)
If the warning message is shown 
even if the vents ar e cleaned, have 
the vehicle inspected by your 
Toyota dealer. 

4837-2. Steps to take in an emergency
7
When trouble arises
■When the electronic key does 
not work properly
●Make sure that the smart key sys-
tem has not been deactivated in 
the customization setting. If it is 
off, turn the function on. 
(Customizable features:  P.523)
●Check if battery-saving mode is 
set. If it is set, cancel the function. 
( P.157)
●The electronic key function may 
have stopped. ( P.157)
Use the mechanical key 
( P.134) in order to perform the 
following operations.
1 Locks all the doors
2 Unlocks the door
Turning the key rearward unlocks 
the driver’s door. Turning the key 
once again within 5 seconds 
unlocks the other doors.
■Key linked functions
1 Closes the windows and the 
moon roof
*1 or panoramic moon 
roof
*1 (turn and hold)*2
2 Opens the windows and the 
moon roof
*1 or panoramic moon 
roof
*1 (turn and hold)*2
*1
: If equipped
*2: These settings must be custom- ized at your Toyota dealer.
If the electronic key 
does not op erate prop-
erly (vehicles with 
smart key system)
If communication between 
the electronic key and vehi-
cle is interrupted ( P.157) 
or the electronic key cannot 
be used because the battery 
is depleted, the smart key 
system and wireless remote 
control cannot be used. In 
such cases, the doors can 
be opened and the hybrid 
system can be started by 
following the procedure 
below.
NOTICE
■In case of a smart key system 
malfunction, or other key 
related problems
Take your vehicle with all the 
electronic keys provided with your 
vehicle to your Toyota dealer.
Locking and unlocking 
the doors 

4847-2. Steps to take in an emergency
1Ensure that the shift lever is 
in P and depress the brake 
pedal.
2 Touch the Toyota emblem 
side of the electronic key to 
the power switch.
When the electronic key is 
detected, a buzzer sounds and the 
power switch will turn to ON.
When the smart key system is 
deactivated in customization set-
ting, the power switch will turn to 
ACC.
3Firmly depress the brake 
pedal and check that   is 
displayed on the multi-infor-
mation display.
4 Press the power switch 
shortly and firmly.
In the event that t he hybrid system 
still cannot be started, contact your 
Toyota dealer.
■Stopping the hybrid system
Shift the shift lever to P, set the 
parking brake and press the power 
switch as you normally do when 
stopping the hybrid system.
■Replacing the key battery
As the above proce dure is a tempo-
rary measure, it is recommended 
that the electronic key battery be 
replaced immediately when the bat-
tery is depleted. ( P.433)
■Alarm (if equipped) (for Canada)
Using the mechanical key to lock 
the doors will not set the alarm sys-
tem.
If a door is unl ocked using the 
mechanical key when the alarm sys-
tem is set, the alarm may be trig-
gered.
■Changing power switch modes
Release the brake pedal and press 
the power switch in step  3 above.
The hybrid system does not start 
and modes will be changed each 
time the switch is pressed. 
(  P.222)
WARNING
■When using the mechanical 
key and operating the power 
windows or the moon roof (if 
equipped) or panoramic 
moon roof (if equipped)
Operate the power window or the 
moon roof or panoramic moon 
roof after checking to make sure 
that there is no possibility of any 
passenger having any of their 
body parts caught in the window 
or the moon roof or panoramic 
moon roof. Also,  do not allow chil-
dren to operate the mechanical 
key. It is possible for children and 
other passengers to get caught in 
the power window or the moon 
roof or panoramic moon roof.
Starting the hybrid sys-
tem 

4857-2. Steps to take in an emergency
7
When trouble arises
If you have a set of jumper (or 
booster) cables and a second 
vehicle with a 12-volt battery, 
you can jump start your vehicle 
by following the steps below.
1Vehicles with alarm system: 
Confirm that the electronic 
key is being carried.
When connecting the jumper (or 
booster) cables, depending on the 
situation, the ala rm may activate  and the doors locked. (
P.83)
2 Open the hood ( P.398) and 
fuse box cover.
Push claws   and   to com-
pletely release the lock, and then lift 
up the cover.
3 Open the exclusive jump 
starting terminal cover.
4 Connect a positive jumper cable clamp to   on your vehicle and 
connect the clamp on the other end of the positive cable to   on  
the second vehicle. Then, connect a negative cable clamp to   
If the 12-volt battery is 
discharged
The following procedures 
may be used to start the 
hybrid system if the vehi-
cle’s 12-volt battery is dis-
charged.
You can also call your 
Toyota dealer or a qualified 
repair shop.
Restarting the hybrid sys-
tem
AB
A
B
C