Page 406 of 572

4066-3. Do-it-yourself maintenance
HIGHLANDER HV_U
6-3.Do-it-yourself maintenance
Do-it-yourself  ser vice 
precautions
If you perform maintenance 
by yourself, be sure to fol-
low the correct procedure 
as given in these sections.
Maintenance
ItemsParts and tools
12-volt battery 
condition 
( P.416)
•Grease
• Conventional 
wrench (for ter-
minal clamp 
bolts)
Brake fluid 
level ( P.414)
• FMVSS No.116 
DOT 3 or SAE 
J1703 brake fluid
• Rag or paper  towel
• Funnel (used  only for adding 
brake fluid)
Engine/power 
control unit 
coolant level 
( P.413)
• “Toyota Super 
Long Life Cool-
ant” or a similar 
high quality eth-
ylene gly-
col-based 
non-silicate, 
non-amine, 
non-nitrite and 
non-borate cool-
ant with long-life 
hybrid organic 
acid technology
For the U.S.A.:
“Toyota Super 
Long Life Cool-
ant” is pre-mixed 
with 50% cool-
ant and 50% 
deionized water.
For Canada:
“Toyota Super 
Long Life Cool-
ant” is pre-mixed 
with 55% cool-
ant and 45% 
deionized water.
• Funnel (used  only for adding 
coolant)
Engine oil level 
( P.410)
• “Toyota Genuine 
Motor Oil” or 
equivalent
• Rag or paper  towel
• Funnel (used  only for adding 
engine oil)
Fuses 
( P.439)• Fuse with same 
amperage rating 
as original
ItemsParts and tools 
     
        
        Page 407 of 572

4076-3. Do-it-yourself maintenance
HIGHLANDER HV_U
6
Maintenance and care
Hybrid battery 
(traction bat-
tery) air intake 
vent ( P.435)• Vacuum cleaner, 
etc.
• Phillips screw- driver
Headlight aim 
( P.442)• Phillips-head 
screwdriver
Light bulbs 
( P.443)
• Bulb with same 
number and 
wattage rating as 
original
• Flathead screw- driver
• Wrench
Radiator and 
condenser 
(  P.414)
Tire inflation 
pressure 
( P.430)• Tire pressure 
gauge
• Compressed air  source
Washer fluid 
( P.415)
• Water or washer 
fluid containing 
antifreeze (for 
winter use)
• Funnel (used  only for adding 
water or washer 
fluid)
WA R N I N G
The engine compartment contains 
many mechanisms and fluids that 
may move suddenly, become hot, 
or become electrically energized. 
To avoid death or serious injury, 
observe the following precautions.
ItemsParts and tools■When working on the engine 
compartment
●Make sure that the “ACCES-
SORY” or “IGNITION ON” on 
the multi-information display 
and the “READY” indicator are 
both off.
●Keep hands, clothing and tools 
away from the moving fan and 
engine drive belt.
●Be careful not to touch the 
engine, power control unit, radi-
ator, exhaust manifold, etc. right 
after driving as they may be hot. 
Oil and other fluids may also be 
hot.
●Do not leave anything that may 
burn easily, such as paper and 
rags, in the engine compart-
ment.
●Do not smoke, c ause sparks or 
expose an open flame to fuel or 
the battery. Fuel and battery 
fumes are flammable.
■When working near the elec-
tric cooling fan or radiator 
grille
Be sure the power switch is off.
With the power switch in ON, the 
electric cooling fa n may automati-
cally start to run if the air condi-
tioning is on and/or the coolant 
temperature is high. ( P.414)
■Safety glasses
Wear safety glasses to prevent 
flying or falling material, fluid 
spray, etc. from getting in your 
eyes.
NOTICE
■If you remove the air cleaner 
filter
Driving with the ai r cleaner filter 
removed may cause excessive 
engine wear due to  dirt in the air. 
     
        
        Page 410 of 572
4106-3. Do-it-yourself maintenance
HIGHLANDER HV_U
Engine coolant reservoir ( P.413)
Fuse boxes ( P.439)
Engine oil filler cap ( P.411)
Engine oil level dipstick ( P.411)
Brake fluid reservoir ( P.414)
Washer fluid tank ( P.415)
Electric cooling fan
Condenser ( P.414)
Radiator ( P.414)
Power control unit coolant reservoir ( P.414)
■12-volt battery
 P. 4 1 6
With the engine at operating 
temperature and turned off, 
check the oil level on the dip-
Engine compar tment
Components
Checking and adding the 
engine oil 
     
        
        Page 411 of 572

4116-3. Do-it-yourself maintenance
HIGHLANDER HV_U
6
Maintenance and care
stick.
■Checking the engine oil
1 Park the vehicle on level 
ground. After warming up the 
engine and turning off the 
hybrid system, wait more 
than 5 minutes for the oil to 
drain back into the bottom of 
the engine.
2 Holding a rag under the end, 
pull the dipstick out.
3 Wipe the dipstick clean.
4 Reinsert the dipstick fully.
5 Holding a rag under the end, 
pull the dipstick out and 
check the oil level.
Low
Normal
Excessive
The shape of the dipstick may differ  depending on the type of vehicle or 
engine.
6
Wipe the dipstick and reinsert 
it fully.
■Checking the oil type and 
preparing the item needed
Make sure to check the oil type 
and prepare the items needed 
before adding oil.
 Engine oil selection
P.508
 Oil quantity (Low   Full)
1.6 qt. (1.5 L, 1.3 Imp. qt.)
 Item
Clean funnel
■Adding engine oil
If the oil level is below or near 
the low level mark, add engine 
oil of the same type as that 
already in the engine.
1 Remove the oil filler cap by 
turning it counterclockwise.
2 Add engine oil slowly, check-
ing the dipstick.
3 Install the oil filler cap by 
turning it clockwise.
■Engine oil consumption
A certain amount of engine oil will  
     
        
        Page 568 of 572

568Alphabetical Index
HIGHLANDER HV_U
High coolant temperature ..... 460
Hybrid system overheat warning  light..................................... 461
Intuitive parking assist OFF indi- cator ................................... 465
Low engine oil pressure ....... 461
Low fuel level ....................... 463
LTA indicator ......................... 464
Malfunction indicator lamp ... 461
Parking brake indicator ........ 467
PKSB OFF indicato r ............. 465
Pre-collision system ............. 466
RCTA OFF indicator ............. 465
Seat belt reminder light 463, 464
Slip indicator......................... 466
SRS ...................................... 462
Tire pressure ........................ 464
Warning message........... 101, 111
Warning messages................. 470
Washer Adding .................................. 415
Preparing and c hecking before 
winter.................................. 327
Switch........................... 235, 238
Washing and waxing .............. 394
Weight Cargo capacity ..................... 200
Load limits ............................ 200
Weight .................................. 504
Wheels ..................................... 432 Size ...................................... 511
Window lock switch ............... 181
Windows Power windows .................... 179
Rear window defogger . 338, 342
Washer ......................... 235, 238
Windshield defo gger ...... 338, 341
Windshield wiper de-icer338, 346
Windshield wipers Rain-sensing windshield wipers................................... 235, 238
Winter driving tips .................. 327 Wireless charger.....................369
Wireless remote control
Battery-Saving Function .......147
Locking/Unlocking ................129
Replacing the battery ...........438
For infor mation regarding the equipment listed 
below, refer to the “NAVI-
GATION AND MULTIME-
DIA SYSTEM OWNER’S 
MANUAL”.
· Navigation system
· Audio/visual system
· Rear seat entertainment sys-
tem
· Rear view monitor system
· Toyota parking assist monitor
· Panoramic view monitor