Page 197 of 492
197
4
Driving
AVALON_HV_U (01999-07002)
4-4. Refueling
●Close all the doors and windows, and turn the power switch off.
● Confirm the type of fuel.
■Fuel types
P. 445
■ Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
Opening the fuel tank cap
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle
Page 329 of 492

3296-1. Maintenance and care
6
Maintenance and care
AVALON_HV_U (01999-07002)
NOTICE
■Cleaning detergents
●Do not use the following types of detergent, as they may discolor the vehi-
cle interior or cause streaks or damage to painted surfaces:
• Non-seat portions: Organic substances such as benzene or gasoline,
alkaline or acidic solutions, dye, and bleach
• Seats: Alkaline or acidic solutions, such as thinner, benzene, and alco- hol
● Do not use polish wax or polish cleaner. The instrument panel’s or other
interior part’s painted surface may be damaged.
■ Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of
leather surfaces:
●Remove any dust or dirt from leather surfaces immediately.
● Do not expose the vehicle to direct sunlight for extended periods of time.
Park the vehicle in the shade, especially during summer.
● Do not place items made of vinyl, plastic, or containing wax on the uphol-
stery, as they may stick to the leather surface if the vehicle interior heats
up significantly.
■ Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes
into contact with electrical components such as the audio system above or
under the floor of the vehicle. Water may also cause the body to rust.
■ When cleaning the inside of the windshield (vehicles with Toyota
Safety Sense P)
Do not allow glass cleaner to contact the lens. Also, do not touch the lens.
(P. 221)
■ Cleaning the inside of the rear window
● Do not use glass cleaner to clean the rear window, as this may cause
damage to the rear window defogger heater wires or antenna. Use a cloth
dampened with lukewarm water to gently wipe the window clean. Wipe the
window in strokes running parall el to the heater wires or antenna.
● Be careful not to scratch or damage the heater wires or antenna.
Page 438 of 492
4388-1. Specifications
AVALON_HV_U (01999-07002)
Engine
Model2.5 L 4-cylinder (2AR-FXE)
Ty p e4-cylinder in line, 4-cycle, gasoline
Bore and stroke3.54 3.86 in. (90.0 98.0 mm)
Displacement152.2 cu. in. (2494 cm3)
Valve clearanceAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating87 (Research Octane Number 91) or higher
Fuel tank capacity
(Reference)17.0 gal. (64.35 L, 14.2 Imp. gal.)
Electric motor (traction motor)
Ty p ePermanent magnet synchronous motor
Maximum output105 kW
Maximum torque199 ft•lbf (270 N•m, 27.5 kgf•m)
Hybrid battery (traction battery)
Ty p eNickel-Metal hydride battery
Voltage7.2 V/module
Capacity6.5 Ah (3HR)
Quantity34 modules
Overall voltage244.8 V
Page 441 of 492
4418-1. Specifications
8
Vehicle specifications
AVALON_HV_U (01999-07002)
Cooling system
Capacity
Gasoline
engine7.6 qt. (7.2 L, 6.3 Imp. qt.)
Power
control unit3.4 qt. (3.2 L, 2.8 Imp. qt.)
Coolant type
Use either of the following:• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-basednon-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK16HR-A8
Gap0.031 in. (0.8 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Page 447 of 492

4478-1. Specifications
8
Vehicle specifications
AVALON_HV_U (01999-07002)■
Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of gasoline that contains MMT. If fuel
containing MMT is used, your emission control system may be adversely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If this
happens, contact your Toyota dealer for service.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time while accelerat-
ing or driving uphill. This is normal and there is no need for concern.
NOTICE
■ Notice on fuel quality
●Do not use improper fuels. If improper fuels are used, the engine will be
damaged.
● Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic
converters causing the emission control system to malfunction.
● Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performance
problems.
● Using unleaded gasoline with an octane number or rating lower than the
level previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■ Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine knocking, etc.) is
encountered after using a different type of fuel, discontinue the use of that
type of fuel.
■ When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.
Page 492 of 492
492
AVALON_HV_U (01999-07002)
GAS STATION INFORMATION
Auxiliary catch leverTrunk openerFuel filler door
P. 339 P. 116 P. 199
Hood lock release leverTire inflation
pressure
P. 339P. 443
Fuel tank capacity
(Reference) 17.0 gal. (64.35 L, 14.2 Imp. gal.)
Fuel type
Unleaded gasoline only P. 197, 438
Cold tire inflation
pressure P. 4 4 3
Engine oil capacity
(Drain and refill —
reference)
P. 4 3 9
Engine oil type
P. 439