
3936-3. Do-it-yourself maintenance
6
Maintenance and care
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir
when the hybrid system is cold.
■Engine coolant reservoirReservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL”
line. ( P.473)
■Power control unit coolant
reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL”
line. ( P.475)
■Coolant selection
Only use “Toyota Super Long Life
Coolant” or a similar high quality
ethylene glycol ba sed non-silicate,
non-amine, non-nitrite, and non-
WARNING
●Do not leave used engine oil
within the rea ch of children.
NOTICE
■To prevent serious engine
damage
Check the oil level on a regular
basis.
■When replacing the engine oil
●Be careful not to spill engine oil
on the vehicle components.
●Avoid overfilling, or the engine
could be damaged.
●Check the oil le vel on the dip-
stick every time you refill the
vehicle.
●Be sure the engine oil filler cap
is properly tightened.
■If oil is spilled on the engine
cover
To prevent the engine cover from
being damaged, remove any
engine oil from the engine cover
as soon as possible using a neu-
tral detergent. Do not use an
organic solvent such as brake
cleaner.
Checking the coolant
A
B
C
A
B
C

4527-2. Steps to take in an emergency
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 dealer immediately.
■If a message that indicates the
need for referring to Owner’s
Manual is displayed
●If the following messages are
shown, follow the instructions,
accordingly.
• If “Engine Coola nt Temp High” is
shown, follow the instructions
( P.473).
• “Blind Spot Monitor Unavailable” ( P.279)
• “Rear Cross Traffic Alert Unavail- able” ( P.279)
●If the following messages are
shown, there may be a malfunc-
tion. Immediately have the vehi-
cle inspected by your Toyota
dealer.
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid battery system malfunc- tion”
●“Traction battery system malfunc-
tion”
• “Accelerator Syst em Malfunction”
• “Smart Key System Malfunction”
●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 vehicle may be dangerous.
• “Oil Pressure Low”
•“Braking Power Low”
●If any of the following messages
are shown on the multi-informa-
tion display, the vehicle may have
run out of fuel. Stop the vehicle in
a safe place and, if the fuel level is
low, refuel the vehicle.
• “Hybrid System Stopped”
• “Engine Stopped”
●If “Maintenance Required for Trac-
tion Battery Cooling Parts See
Owner’s Manual” is shown, the fil-
ters may be clogged, the air intake
vents may be blo cked, or there
may be a gap in the duct. There-
fore, perform the following correc-
tion procedure.
• Cleaning the hybrid battery (trac-
tion battery) air intake vents.
( P.417)
If the warning message is shown
even if the vents ar e cleaned, have
the vehicle inspected by your
Toyota dealer.
●If “12-Volt Batte ry Charging Sys-
tem Malfunction Stop in a Safe
Place See Owner’s Manual” is
shown
Indicates a malfunction in the vehi-
cle’s charging system. Pull over and
stop the vehicle as soon as it is safe
to do so.
While the message is displayed, the
functions of the air conditioning, etc.
may be partially limited in order to
reduce the power consumption of
the 12-volt battery.
■If “Hybrid System Overheated
Output Power Reduced” is
shown
The message may be shown when
driving under severe operating con-
ditions. (For example, when driving
up a long steep hill or driving up a
steep hill in reverse.)
Coping method: P.475
■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 bat-
tery) can not be charged when the
shift lever is in N, shift the shift lever
to P when the vehicle is stopped.

4537-2. Steps to take in an emergency
7
When trouble arises
■If “Traction Battery Needs to be
Protected Shift into P to
Restart” 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 certain amount of time.
When operating the vehicle, shift to
P and restart the hybrid system.
■If “Shift is in N Release Acceler-
ator Before Shif ting” is shown
Message is displayed when the
accelerator pedal has been
depressed and the shift lever is in N.
Release the accelerator pedal and
shift the shift lever to D or R.
■If “Press Brake when Vehicle is
Stopped Hybrid System may
Overheat” 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.
■If “Auto Power OFF to Conserve
Battery” is shown
Power was turned off due to the
automatic power off function.
Next time when starting the hybrid
system, operate th e hybrid system
for approximatel y 5 minutes to
recharge the 12-volt battery.
■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 sto pped on a slope.
Move the vehicle to a level surface
and check if the message disap-
pears.
■If “Maintenance Required
Soon” is shown
Indicates that all maintenance
according to the driven distance on
the maintenance schedule
* should
be performed soon.
Comes on approximately 4500
miles (7200 km) after the message
has been reset.
If necessary, perform maintenance.
Please reset the m essage after the
maintenance is performed.
( P.380)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your
vehicle.
■If “Maintenance Required Visit
Your Dealer” is shown
Indicates that all maintenance is
required to correspond to the driven
distance on the maintenance sched-
ule
*.
Comes on approximately 5000
miles (8000 km) after the message
has been reset. (The indicator will
not work properly unless the mes-
sage has been reset.)
Perform the necessary mainte-
nance. Please reset the message
after the maintenance is performed.
( P.380)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your
vehicle.
■If “Engine Maintenance
Required Visit Your Dealer” is
shown
The engine or an engine component
is malfunctioning. Have the vehicle
inspected by your Toyota dealer
immediately.

4547-2. Steps to take in an emergency
■If “Oil Maintenance Required
Soon” is displayed
Indicates that the engine oil should
be scheduled to be changed.
Check the engine oil and change it if
necessary.
After changing the engine oil, make
sure to reset the message.
( P.392)
■If “Oil Maintenance Required” is
displayed
Indicates that the engine oil should
be changed.
Check and change the engine oil,
and oil filter by your Toyota dealer.
After changing the engine oil, make
sure to reset the message.
( P.392)
■If “Accelerator and Brake Ped-
als Pressed Simultaneously” is
shown
The accelerator and brake pedals
are being depressed simultane-
ously. ( P.189)
Release the accelerator pedal and
depress the brake pedal.
■If a message that indicates the
malfunction of front camera is
displayed
The following sys tems may be sus-
pended until the pr oblem shown in
the message is resolved. ( P.237,
441)
●PCS (Pre-Collis ion System)
●LTA (Lane Tracing Assist)
●AHB (Automatic High Beam)
●RSA (Road Sign Assist)*
●Dynamic radar cruise control with
full-speed range
*: If equipped
■If a message that indicates the
malfunction of radar sensor is
displayed
The following sys tems may be sus-
pended until the pr oblem shown in the message is resolved. (
P.237,
441)
●PCS (Pre-Collision System)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control with
full-speed range
■If “Radar Cruise Control
Unavailable See Owner’s Man-
ual” is shown
The dynamic radar cruise control
with full-speed range system is sus-
pended temporarily or until the prob-
lem shown in the message is
resolved. (causes and coping meth-
ods: P.237)
■If “Radar Cruise Control
Unavailable” is shown
The dynamic radar cruise control
with full-speed range system cannot
be used temporarily. Use the sys-
tem when it becomes available
again.
■Warning buzzer
P.448
WARNING
■If a warning light comes on or
a warning buzzer sounds
when a warning message is
shown on the multi-informa-
tion display
P.449

4828-1. Specifications
Front
Rear
■Oil capacity (Drain and refill reference*)
*: The engine oil capacity is a reference quantity to be used whe n changing
the engine oil. Warm up and turn off the hybrid system, wait mo re than 5
minutes, and check the o il level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is
used in your Toyota vehicle.
Use Toyota approved “Toyota
Genuine Motor Oil” or equiva-
lent to satisfy the following grade and viscosity.
Oil grade:
ILSAC GF-6B multigrade engine
oil
Recommended viscosity:
Electric motor (traction motor)
TypePermanent magnet synchronous motor
Maximum output88 kW
Maximum torque149 ft•lbf (202 N•m, 20.6 kgf•m)
TypePermanent magnet synchronous motor
Maximum output40 kW
Maximum torque89.2 ft•lbf (121 N•m, 12.3 kgf•m)
Hybrid battery (traction battery)
TypeLithium-ion battery
Voltage3.6 V/cell
Capacity3.7 Ah
Quantity70 cells
Nominal voltage252 V
Lubrication system
With filter4.8 qt. (4.5 L
, 4.0 Imp. qt.)
Without filter4.4 qt. (4.2 L, 3.7 Imp. qt.)

536Alphabetical Index
Driving support system informa-tion display ................... 105, 116
Dynamic radar cruise control with full-speed rangeFunction ............................... 265
Warning message ................ 451
E
ECB (Electronically Controlled Brake System) ...................... 305
Eco drive mode ...................... 304
EDR (Event data recorder)......... 8
E-Four (Electronic On-Demand AWD system) ........................ 306
Elapsed time ........................... 104
Electric motor Location.................................. 70
Specification ......................... 482
Electric Power Steering (EPS) Function ............................... 306
Warning light ........................ 443
Electronically Controlled Brake System (ECB) ....................... 305
Electronic key Battery-saving function......... 155
If the electronic key does not operate properly ................. 466
Replacing the battery ........... 424
Electronic sunshade .............. 350 Operation ............................. 350
Emergency, in case of If a warning buzzer sounds .. 441
If a warning light turns on ..... 441
If a warning message is dis-played................................. 451
If the 12-volt battery is dis- charged .............................. 468
If the electronic key does not operate properly ................. 466
If the fuel filler door cannot be opened ............................... 465
If the hybrid sy stem will not start ...........................................463
If the vehicle is submerged or water on the road is rising ..434
If you have a flat tire .............456
If you lose your keys.............465
If you think something is wrong ...........................................439
If your vehicle becomes stuck ...........................................477
If your vehicle has to be stopped in an emergency .................433
If your vehicle needs to be towed ...........................................436
If your vehicle ove rheats ......473
Emergency flashers ...............432
Energy monitor .......................128
Engine Compartment........................390
Hood .....................................387
Identification number ............481
Engine coolant Capacity ...............................483
Checking ..............................393
Preparing and checking before winter ..................................313
Warning light ........................442
Engine coolant temperature gauge .......................................90
Engine oil Capacity ...............................482
Checking ..............................390
Preparing and checking before winter ..................................313
Warning light ........................442
Engine oil maintenance data .92, 392
Enhanced Vehicle Stability Con- trol (Enhanced VSC ) .............306
Enhanced VSC (Enhanced Vehi- cle Stability Control).............306
EPS (Electric Po wer Steering)
Function................................306

Alphabetical Index545
Turn signal lever................... 212
U
USB Type-C charging ports .. 354
Utility vehicle precautions ..... 316
V
Vanity lightsVanity lights .......................... 353
Vanity mirrors ......................... 353
Vehicle data recordings ............. 7
Vehicle identification number480
Vehicle Stability Control (VSC) ............................................... 306
Ventilators (seat ventilators) . 337
VSC (Vehicle Stability Control) ............................................... 306
W
Warning buzzers Approach warning ................ 272
Brake hold ............................ 446
Brake Override System ........ 445
Brake system ....................... 441
Downshifting......................... 211
Drive-Start Control ............... 445
Electric power steering ......... 443
High coolant temperature ..... 442
Intuitive parking assist OFF indi-cator ................................... 444
Intuitive parking assist .......... 287
Low engine oil pressure ....... 442
LTA (Lane Tracing Assist).... 250
LTA indicator ........................ 444
Open door ............................ 140
Open hood ........................... 140
PKSB OFF indicato r ............. 444
PKSB.................................... 445
Pre-collision warning ............ 239
RCTA (Rear Cross Traffic Alert) ...........................................278
RCTA OFF indicator .............445
Seat belt reminder ................447
Vehicle sway warning ...........255
Warning lights ABS ......................................443
Brake hold operated indicator...........................................446
Brake Override System ........445
Brake system ........................441
Charging system ..................441
Drive-Start Control ................445
Electric power steering .........443
Engine ..................................442
High coolant temperature .....442
Intuitive parking assist OFF indi- cator ...................................444
Low engine oil pressure .......442
Low fuel level........................446
LTA indicator ........................444
Malfunction indica tor lamp ....442
Parking brake indicator.........446
PCS warning light .................443
PKSB (Parking Support Brake) ...........................................445
PKSB OFF indicator .............444
RCTA OFF indicator .............445
Seat belt reminder light ........447
Slip indicator .........................445
SRS ......................................442
Tire pressure ...... ..................446
Warning messages .................451
Washer Checking ..............................396
Low washer fluid warning mes-sage............................396, 451
Preparing and checking before winter ..................................313
Switch ...........................226, 229
Washing and waxing ..............372
Weight Cargo capacity .............195, 198