Page 340 of 512
3406-2. Maintenance
AVALON_HV_U (OM41451U)
Head restraints• Do the head restraints movesmoothly and lock securely?
Indicators/buzzers• Do the indicators and buzzersfunction properly?
Lights• Do all the lights come on?
Parking brake
• Moves smoothly?
• When parked on a slope and theparking brake is on, is the vehicle
securely stopped?
Seat belts
• Do the seat belts operatesmoothly?
• The seat belts should not be dam- aged.
Seats• Do the seat controls operate prop-erly?
Steering wheel
• Does the steering wheel rotatesmoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be any strange sounds coming from the steering
wheel.
ItemsCheck points
Page 341 of 512
3416-2. Maintenance
6
Maintenance and care
AVALON_HV_U (OM41451U)
Vehicle exterior
ItemsCheck points
Doors/trunk• Do the doors/trunk operatesmoothly?
Engine hood• Does the engine hood lock systemwork properly?
Fluid leaks
• There should not be any signs offluid leakage after the vehicle has
been parked.
Tires
• Is the tire inflation pressure cor-rect?
• The tires should not be dam- aged or excessively worn.
• Have the tires been rotated according to the maintenance
schedule?
• The wheel nuts should not be loose.
CAUTION
■ If the hybrid system is operating
Turn the hybrid system off and ensure that there is adequate ventilation
before performing maintenance checks.
Page 346 of 512
3466-3. Do-it-yourself maintenance
AVALON_HV_U (OM41451U)
Pull the hood lock release lever.
The hood will pop up slightly.
Pull up the auxiliary catch lever
and lift the hood.
Hood
Release the lock from the inside of the vehicle to open the hood.
1
2
CAUTION
■Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion
and cause an accident, which may result in death or serious injury.
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
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3596-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON_HV_U (OM41451U)
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, observe the following precautions before
recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to dis-
connect the ground cable.
● Make sure the power switch on the charger is off when connecting and dis-
connecting the charger cables to the 12-volt battery.
■ After recharging/reconnecting the 12-volt battery
●The hybrid system may not start. Follow the procedure below to initialize the
system.
Shift the shift lever to P.
Open and close any of the doors.
Restart the hybrid system.
● Unlocking the doors using the smart key system may not be possible imme-
diately after reconnecting the 12-volt battery. If this happens, use the wire-
less remote control or the mechanical key to lock/unlock the doors.
● Start the hybrid system with the power switch in ACCESSORY mode. The
hybrid system may not start when the power switch turned from off. How-
ever, the hybrid system will operat e 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 12-volt battery was disconnected. Make sure to turn off
the power switch before disconnect the 12-volt battery. Take extra care
when connecting the 12-volt battery if the power switch mode prior to dis-
charge is unknown.
If the system will not start even after multiple attempts at all methods above,
contact your Toyota dealer.
1
2
3
Page 382 of 512
3826-3. Do-it-yourself maintenance
AVALON_HV_U (OM41451U)■
Engine compartment (type A fuse box)
Fuse block
Fuse block on the back of the cover
Fuse layout and amperage ratings
FuseAmpereCircuit
1 METER-IG2 5 A Gauge and meters
2 FAN 50 A Electric cooling fans
3 H-LP CLN 30 A No circuit
4 ENG W/PMP 30 A Multiport fuel injection system/sequential
multiport fuel injection system
5 PTC HTR NO.2 50 A PTC heater
6 PTC HTR NO.1 50 A PTC heater
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3836-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON_HV_U (OM41451U)7 HTR 50 A Air conditioning system
8 DC/DC 120 A Hybrid system
9 ABS NO.1 30 A Electronically controlled brake system
10 H-LP-MAIN 30 A H-LP LH-LO, H-LP RH-LO, headlight
(low beam)
11 ABS MTR NO.2 50 A Electronically controlled brake system
12 ABS MTR NO.1 50 A Electronically controlled brake system
13 R/B NO.2 50 A IGCT-MAIN, INV W/PMP
14 EPS 80 A Electric power steering
15 S-HORN 7.5 A S-HORN
16 DEICER 15 A No circuit
17 HORN 10 A Horns
18 EFI NO.2 15 A Multiport fuel injection system/sequential
multiport fuel injection system, electroni-
cally controlled brake system
19 EFI NO.3 7.5 A Multiport fuel injection system/sequential
multiport fuel injection system
20 INJ 7.5 A Multiport fuel injection system/sequential
multiport fuel injection system
21 ECU-IG2 NO.3 7.5 A Multiport fuel injection system/sequential
multiport fuel injection system, steering
lock system, hybrid system, stop lights,
high-mounted stop light
22 IGN 15 A Starter system
23 D/L-AM2 20 A No circuit
24 IG2-MAIN 25 A IGN, INJ, METER-IG2, ECU-IG2 NO.3,
A/B, ECU-IG2 NO.2, ECU-IG2 NO.1
25 DC/DC-S 7.5 A Hybrid system
26 MAYDAY 5 A MAYDAY
27 TURN&HAZ 15 A Turn signal lights, emergency flashers,
gauge and meters, outside rear view mir-
rors
28 STRG LOCK 10 A Steering lock system
FuseAmpereCircuit
Page 386 of 512
3866-3. Do-it-yourself maintenance
AVALON_HV_U (OM41451U)■
Driver’s side instrument panel
FuseAmpereCircuit
1 H-LP LVL 7.5 A Automatic headlight leveling system
2 S/HTR RR 20 A Rear seat heater
3 ECU-ACC 5 A Air conditioning system, outside rear
view mirrors, multiplex communication
system, glove box light
4 RR P/OUTLET 15 A Power outlet
5 ECU-IG2 NO.2 7.5 A Smart key system, electronically con-
trolled brake system
6 ECU-IG2 NO.1 7.5 A Hybrid system
7 A/B 10 A Front passenger occupant classification
system, SRS airbag system
8 FUEL DR LOCK 10 A Fuel filler door lock
9 D/L-AM1 20 A Multiplex communication system, power
door lock, trunk opener switch
10 PSB 30 A Pre-collision system 11 P/SEAT FR 30 A Power seats
12 S/ROOF 10 A Moon roof
13 A/C-B 7.5 A Air conditioning system