2012 TOYOTA PRIUS PHV fuel

40 1-1. Plug-in hybrid system
PRIUS PHV_OM_OM47818U_(U)
■Refilling fuel
Plug-in hybrid vehicles can be driven using electricity charged from an exter-
nal power source, however the gasoline engine that is provided on board as
an auxiliary power source and as a power source for driving in HV mode
needs to be filled with fuel. Check the fuel amount and refill immediately
when the fuel level becomes low. ( P. 174)
■ Gasoline engine operation in EV mode
Even if there is a sufficient amount of electricity remaining in the hybrid bat-
tery (traction battery) and EV driving range ( P. 58, 268) is being displayed,
the gasoline engine may operate automatically in the following circum-
stances (EV driving will be returned to automatically after EV driving
becomes possible again):
● When the heater etc. is in use.
● When the temperature of the hybrid system is high.
The vehicle has been left in the sun, driven on a hill, driven at high
speeds, etc.
● When the temperature of the hybrid system is low.
The vehicle has been left in temperatures lower than about 32 °F (0 °C)
for a long period of time etc.
● When power is needed temporarily, for example when accelerating sud-
denly.
● When vehicle speed is more than approximately 62 mph (100 km/h).
● When the accelerator pedal is depressed firmly or the vehicle is on a hill
etc.
● When the outside temperature is low (less than 14 °F [-10 °C])
The gasoline engine may also operate in circumstances other than those
listed above, depending on conditions.

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1-1. Plug-in hybrid system
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Before driving
PRIUS PHV_OM_OM47818U_(U)
Hybrid battery (traction battery) air vents
There are air intake vents on the
side of the rear right seatback
and on the front corner of the left
rear seat cushion for the purpose
of cooling the hybrid battery
(traction battery). If the vents
become blocked, the hybrid bat-
tery (traction battery) may over-
heat, leading to a reduction in
hybrid battery (traction battery)
output.
Emergency shut off system When a certain level of impact is detected by the impact sensor, the
emergency shut off syst em blocks off the high voltage current and
stops the fuel pump to minimize t he risk of electrocution and fuel
leakage. If the emergency shut off sy stem activates, your vehicle will
not restart. To restart the hybrid system, contact your Toyota dealer.

46 1-1. Plug-in hybrid system
PRIUS PHV_OM_OM47818U_(U)
Hybrid warning messageA message is automatically displayed when a malfunction occurs in
the hybrid system or an impr oper operation is attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions. ( P. 546)
■If a warning light comes on, a warn ing message is displayed or the 12-
volt battery is disconnected
The hybrid system may not start. In that case, try to start the system again. If
the “READY” indicator does not come on, contact your Toyota dealer.
■ Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be
started, refuel the vehicle with at least enough gasoline to make the low fuel
level warning light ( P. 537) go off. If there is only a small amount of fuel,
the hybrid system may not be able to start. (The minimum amount of fuel to
add to make the low fuel level warning light go out is about 1.9 gal. [7.1 L,
1.6 Imp.gal.], when the vehicle is on a level surface. This value may vary
when the vehicle is on a slope.)

50 1-1. Plug-in hybrid system
PRIUS PHV_OM_OM47818U_(U)
CAUTION
●If your vehicle needs to be towed, do so with front wheels raised. If the
wheels connected to the electric motor (traction motor) are on the ground
when towing, the motor may continue to generate electricity. This may
cause a fire. ( P. 525)
● Carefully inspect the ground under the vehicle. If you find that liquid has
leaked onto the ground, the fuel system may have been damaged. Leave
the vehicle as soon as possible.
■ Hybrid battery (traction battery) (lit hium-ion battery) replacement and
disposal
Do not replace, dispose of, modify, or reuse the hybrid battery (traction bat-
tery) and do not use it for anything other than its intended use. Contact your
Toyota dealer for replacement or disposal.
If the hybrid battery (traction battery) is replaced, disposed of, modify or
reused in an improper way, or if the hybrid battery (traction battery) is used in
a way it is not intended for, there is a risk of severe burns and electrical
shock that may result in death or serious injury.
Also, improper handling of the hybrid battery (traction battery) can lead to
environmental hazards.

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1-1. Plug-in hybrid system
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Before driving
PRIUS PHV_OM_OM47818U_(U)
NOTICE
■
Hybrid battery (traction battery) air vents
● Do not put foreign objects near the air vents. The hybrid battery (traction
battery) may overheat, leading to a reduction in hybrid battery (traction
battery) output or a malfunction.
● Clean the air vents regularly to prevent the hybrid battery (traction battery)
from overheating.
● Do not wet or allow foreign substances to enter the air vents as this may
cause a short circuit and damage the hybrid battery (traction battery).
● Do not carry large amounts of water such as water cooler bottles in the
vehicle. If water spills onto the hybrid battery (traction battery), the battery
may be damaged. Have the vehicle inspected by your Toyota dealer.
● If the rear seat belt becomes separated from the guide ( P. 150), it could
obstruct the hybrid battery (traction battery) air vent. Set the rear seat belt
into the guide to use.
■ Notice about fuel
For plug-in hybrid vehicles, fuel may remain in the tank for a long time and
undergo changes in quality depending on the how the vehicle is used.
Refuel at least 5.3 gal.(20 L, 4.4 Imp.gal.) of fuel every 6 months (refuel a
total of at least 5.3 gal. [20 L, 4.4 Imp.gal.] over a 6-month period), as this
may affect components of the fuel system or the gasoline engine.

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1-1. Plug-in hybrid system
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Before driving
PRIUS PHV_OM_OM47818U_(U)
Navigation system
Press “INFO APPS” or “INFO”.
Touch “Fuel Consumption” on
the “Information” screen.
If the “Consumption” screen is
displayed, touch “Energy”.
STEP 1
STEP 2

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1-1. Plug-in hybrid system
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Before driving
PRIUS PHV_OM_OM47818U_(U)
Consumption screen
Display Audio system
Press “CAR”.
If the “Energy Monitor” screen is displayed, touch “Consumption”.
Fuel consumption in the past
30 minutes
Cruising range ( P. 6 6 )
Regenerated energy in the
past 30 minutes
One symbol indicates 30 Wh. Up
to 4 symbols are shown.
The image is an example only, and may vary slightly from actual conditions.
Navigation system Press “INFO APPS” or “INFO”.
Touch “Fuel Consumption” on the “Information” screen.
If the “Energy Monitor” screen is displayed, touch “Fuel Consump-
tion”.
Fuel consumption in the past
30 minutes
Regenerated energy in the
past 30 minutes
One symbol indicates 30 Wh. Up
to 4 symbols are shown.
Cruising range (P. 6 6 )
The image is an example only, and may vary slightly from actual conditions.
STEP 1
STEP 2

62 1-1. Plug-in hybrid system
PRIUS PHV_OM_OM47818U_(U)
Multi-information displayPress the “DISP” button to dis-
play the 5-minute or 1-minute
fuel consumption display.
Press and hold the “DISP” button
to switch between 5-minute and
1-minute fuel consumption dis-
plays.
The display will alternate with
each press of the button.
5-minute interval fuel consumption
Fuel consumption
Displays the average fuel con-
sumption for the last 30 minutes
in intervals of 5 minutes or the
last 15 minutes in intervals of 1
minute.
Regenerated energy
Displays the amount of energy
generated over the last 30 min-
utes in intervals of 5 minutes or
the last 15 minutes in intervals of
1 minute.
One symbol indicates 50 Wh (5-
minute interval display) or 30 Wh
(1-minute interval display).
Up to 8 symbols are shown.
1-minute interval fuel
consumption