coolant level TOYOTA AVALON HYBRID 2020 Owners Manual (in English)

932. Instrument cluster
2
Instrument cluster
Warning lights inform the driver of malfunctions in any of the vehicle’s
systems.
Warning lights
*1
(Red)
Brake system warning
light ( P. 453) Parking brake indicator
(
P. 454)
*1
(Yellow)
Brake system warning
light ( P. 453)*1, 3
Brake hold operated
indicator ( P. 455)
*2High coolant tempera-
ture warning light
(P. 453)*1
(Red/yellow)
Electric power steering
system warning light
(P. 455)
*2Charging system
warning light ( P. 453)*1, 4PCS warning light
(P. 455)
*2
Low engine oil pressure
warning light ( P. 453)*1, 3
(if equipped)
ICS OFF indicator
(P. 455)
*1
Malfunction indicator
lamp ( P. 454)*2
(Amber)
LDA indicator ( P. 455)
*1SRS warning light
(P. 454)*1
Slip indicator ( P. 456)
*1ABS warning light
(P. 454)Low fuel level warning
light ( P. 456)
*2Brake Override System/
Drive-Start Control/Intel-
ligent Clearance Sonar
(if equipped) warning
light (P. 454)Driver’s and front
passenger’s seat belt
reminder light
(P. 456)

982. Instrument cluster
The units used on the meters may differ depending on the target region.
Hybrid System Indicator
Displays hybrid system output or regeneration level (P. 100)
Shift position (P. 2 0 5 )
Outside temperature
Displays the outside temperature within the range of -40°F (-40 °C) to
122°F (50°C). Low outside temperat ure indicator comes on when the
ambient temperature is 37°F (3°C) or lower.
Multi-information display
Presents the driver with a variety of vehicle data ( P. 1 0 2 )
Displays warning messages in case of a malfunction ( P. 463)
Speedometer
Fuel gauge
Odometer and trip meter P. 117)
Engine coolant temperature gauge
Displays the engine coolant temperature
Gauges and meters
1
2
3
4
5
6
7
8

3946-2. Maintenance
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “Owner’s Warranty
Information Booklet” or “Own er’s Manual Supplement/Sched-
uled Maintenance Guide”. It is recommended that any problem
you notice should be brought to the attention of your Toyota
dealer or qualified s ervice shop for advice.
Engine compartment
ItemsCheck points
Brake fluidIs the brake fluid at the correct
level? ( P. 409)
CoolantIs the coolant at the correct level?
(P. 407)
Engine oilIs the engine oil at the correct level?
(P. 404)
Exhaust systemThere should not be any fumes or
strange sounds.
Radiator/condenser
The radiator and condenser should
be free from foreign objects.
(P. 408)
Washer fluidIs there sufficient washer fluid?
(P. 410)
Tr u nk
ItemsCheck points
12-volt battery Check the connections. (P. 4 1 1 )

399
6
Maintenance and care
6-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
12-volt battery
condition
(  P. 411)•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 409)
• SAE J1703 or FMVSS No.116 DOT 3
SAE J1704 or FMVSS No.116 DOT 4
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power
control unit cool-
ant level
(  P. 407)
• “Toyota Super Long Life Coolant” or a similar high
quality ethylene glycol-based non-silicate, non-
amine, non-nitrite and non-borate coolant with long-
life hybrid organic acid technology
“Toyota Super Long Life Coolant” is pre-mixed with
50% coolant and 50% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(  P. 404)• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 441)• Fuse with same amperage rating as original
Hybrid battery
(traction battery)
air intake vent
( P. 434)
• Vacuum cleaner, etc.
• Phillips screwdriver
Radiator/con-
denser (
P. 408)

4036-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment
Fuse boxes (P. 441)
Engine oil filler cap ( P. 405)
Engine oil level dipstick ( P. 404)
Brake fluid reservoir ( P. 409)
Radiator ( P. 408) Electric cooling fan
Condenser (
P. 408)
Power control unit
coolant reservoir ( P. 407)
Engine coolant reservoir ( P. 407)
Washer fluid tank ( P. 410)1
2
3
4
5
6
7
8
9
10

4076-3. Do-it-yourself maintenance
6
Maintenance and care
Engine coolant reservoir
The coolant level is satisfactory if it is between the “F” and “L” lines on
the reservoir when the hybrid system is cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L”
line, add coolant up to the “F” line.
(P. 492)
Power control unit coolant reservoir
The coolant level is satisfact ory if it is between the “FULL” a nd “LOW”
lines on the reservoir when the hybrid system is cold.
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. ( P. 492)
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-bora te coolant with
long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31 F [-35 C])
Coolant
1
2
3
1
2
3

4086-3. Do-it-yourself maintenance
■If the coolant level drops within a short time of replenishing
Visually check the radiators, hoses, engine/power control unit coolant reser-
voir caps, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehic le inspected by your Toyota dea ler.
WARNING
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir c aps or the
radiator cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
■ When adding coolant
Coolant is neither plain water nor straight antifreeze. The cor rect mixture of
water and antifreeze must be used to provide proper lubrication , corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging p arts or paint.
Radiator and condenser
WARNING
■When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and c ause seri-
ous injuries, such as burns.

4527-2. Steps to take in an emergency
●Fluid leaks un der the vehicle.
(Water dripping from the air conditioning a fter use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge needle continually points high er
than normal
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
● Engine missing, stumb ling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one s ide when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touch es
the floor
If you think something is wrong
If you notice any of the followi ng symptoms, your vehicle proba -
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4537-2. Steps to take in an emergency
7
When trouble arises
If a warning light turns on or a war ning
buzzer sounds
Calmly perform the following actions if any of the warning ligh ts
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and w arning buzzer list
Warning lightWarning light/Details/Actions
(Red)
Brake system warning li ght (warning buzzer)
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
(Yellow)
Brake system warning li ght (warning buzzer)
Indicates a malfunction in:
• The regenerative braking system;
• The electronically controlled brake system; or
• The electric parking brake
 Have the vehicle inspected by your Toyota dealer
immediately.
High coolant temperature warning light (warning
buzzer)
*1
Indicates that the engine coolant temperature is too high
 Immediately stop the vehicle in a safe place.
Handling method ( P. 492)
Charging system warning light*1
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Low engine oil pressure warning light (warning
buzzer)
*1
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.

4657-2. Steps to take in an emergency
7
When trouble arises
■Warning messages
The warning messages explained below may differ from the actual messages
according to operation conditions and vehicle specifications.
■ System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along wit h a message
shown on the multi-information display.
● Malfunction in the ABS
The ABS warning light comes on. ( P. 454)
● Malfunction in the brake system
The brake system warning light (yellow) comes on. ( P. 453)
● Malfunction in the tire pressure warning system
The tire pressure warning light comes on. ( P. 456)
● Remaining fuel level is low
The low fuel level warning light comes on. ( P. 456)
■ If a message instructing to refer to the Owner’s Manual is disp layed
● If the following messages are shown, there may be a malfunction .
Immediately stop the vehicle in a safe place and contact your T oyota dealer.
Continuing to drive the vehicle may be dangerous.
• “Low Braking Power Stop in a Safe Place See Owner’s Manual”
• “Oil Pressure Low Stop in a Safe Place See Owner’s Manual”
• “Charging System Malfunction Stop in a Safe Place See Owner’s Man-
ual”
● If the following message is shown, there may be a malfunction.
Immediately have the vehicle inspected by your Toyota dealer.
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction”
• “Smart Key System Malfunction”
● If “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
displayed, follow the instructions accordingly. ( P. 492)
● If “Maintenance Required for Traction Battery Cooling Parts See Owner’s
Manual” is displayed, follow the instructions accordingly. ( P. 434)