Page 349 of 512
3496-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON_HV_U (OM41451U)
■12-volt battery
P. 358
Engine compar tment
Fuse boxes ( P. 379)
Engine oil filler cap ( P. 351)
Engine oil level dipstick ( P. 350)
Brake fluid reservoir ( P. 356)
Engine coolant radiator ( P. 355) Power control unit coolant
radiator (
P. 355)
Condenser ( P. 355)
Electric cooling fans
Engine coolant reservoir ( P. 353)
Washer fluid tank ( P. 357)
Power control unit coolant res-
ervoir ( P. 353)1
2
3
4
5
6
7
8
9
10
11
Page 350 of 512
3506-3. Do-it-yourself maintenance
AVALON_HV_U (OM41451U)
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
■Checking the engine oilPark 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.
Holding a rag under the end,
pull the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
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.
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
3
4
5
1
2
3
6
Page 351 of 512

3516-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON_HV_U (OM41451U)■
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.
Make sure to check the oil type and prepare the items needed
before adding oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
■ Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following
situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.
●When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine
● If low quality oil or oil of an inappropriate viscosity is used
● When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently
● When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
Engine oil selection P. 456
Oil quantity
(Low Full) 1.6 qt. (1.5 L, 1.3 Imp. qt.)
Items
Clean funnel
1
2
3
Page 352 of 512

3526-3. Do-it-yourself maintenance
AVALON_HV_U (OM41451U)
CAUTION
■Used engine oil
● Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so care
should be taken to avoid prolonged and repeated contact. To remove used
engine oil from your skin, wash thoroughly with soap and water.
● Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground.
Call your Toyota dealer, service station or auto parts store for information
concerning recycling or disposal.
● Do not leave used engine oil within the reach 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 level on the dipstick every time you refill the vehicle.
● Be sure the engine oil filler cap is properly tightened.
Page 455 of 512
4558-1. Specifications
8
Vehicle specifications
AVALON_HV_U (OM41451U)
*: The engine oil capacity is a reference quantity to be used when changingthe engine oil. Warm up the engine and turn off the hybrid system, wait
more than 5 minutes, and check the oil level on the dipstick.
Lubrication system
Oil capacity
Drain and refill (Reference
*)
With filter
Without filter
4.6 qt. (4.4 L, 3.9 Imp. qt.)
4.2 qt. (4.0 L, 3.5 Imp. qt.)