fuel consumption TOYOTA PRIUS PHV 2012 User Guide

68 1-1. Plug-in hybrid system
PRIUS PHV_OM_OM47818U_(U)
■Highway driving
Control your speed and keep at a constant speed. Also, before
stopping at a toll booth or similar, allow plenty of time to release
the accelerator and gently apply the brakes. A greater amount of
electrical energy can be reta ined when slowing down.
Electricity consumptio n will increase substantially when driving
at high speeds in EV mode. If ther e will be a long distance to the
next external charging point afte r leaving a freeway, driving in
HV mode while on the freeway and in EV mode after leaving the
freeway is recommended.
■ Air conditioning on/off
●Switch the air conditioning ( ) to off when it is not
needed. Doing so can help cont rol excessive electricity and
fuel consumption.
In summer: In high temperatures, use the recirculated air
mode. Doing so will help to reduce the burden on the air con-
ditioner and reduce fuel consumption as well.
In winter: Because the gasoli ne engine will not automatically
cut out until the gasoline engine and the interior of the vehicle
are warm, it will consume fuel. Also, fuel consumption can be
improved by avoiding overuse of the heater.
● For efficiency, use the Remo te Air Conditioning System
before departing while the c harging cable is connected.

69
1-1. Plug-in hybrid system
1
Before driving
PRIUS PHV_OM_OM47818U_(U)
■
Checking tire inflation pressure
Make sure to check the tire inflation pressure frequently. If there
is improper tire inflation pressure in the tires, the driving range
when in EV mode will become shorter, and fuel consumption
when in HV mode will increase.
Also, as snow tires can cause lar ge amounts of friction, their use
on dry roads can lead to increas ed fuel and electricity consump-
tion.
■ Luggage
Carrying heavy luggage can require excessive energy. Avoid
leaving unnecessary lu ggage in the vehicle.
Also, equipping a large roof rack can cause excessive energy
consumption in the same way as carrying heavy luggage.
■ Warming up before driving
Since the gasoline engine starts up and cuts out automatically,
warming up is not necessary.

257
PRIUS PHV_OM_OM47818U_(U)
2
When driving
2-2. Instrument cluster
Gauges and meters
The units used on the display may differ depending on the target
region.
The following gauges and meters and display illuminate when the
“POWER” switch is in ON mode:
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Speedometer
Displays the vehicle speed.
Instantaneous fuel consumption
Displays the current rate of fuel consumption.
Shift position indicators
Displays the shift position.
Multi-information display
Presents the driver with a variety of driving-related data. ( P. 266)

266
2-2. Instrument cluster
PRIUS PHV_OM_OM47818U_(U)
Multi-information display
The multi-information display presents the driver with a variety of
driving-related data, including the clock.
● Energy monitor ( P. 5 2 )
● Hybrid System Indicator ( P. 268)
● EV driving ratio indicator ( P. 271)
● 5-minute/1-minute fu el consumption (P. 6 1 )
● Monthly fuel consumption record ( P. 6 4 )
● Odometer/trip meter/distance to empty ( P. 273)
● Clock ( P. 275)
● Calendar ( P. 275)
● Dynamic radar cruise control display (if equipped) ( P. 312)
● Warning messages ( P. 546)

268 2-2. Instrument cluster
PRIUS PHV_OM_OM47818U_(U)
Hybrid System IndicatorHybrid System Indicator displays the hybrid system operating condi-
tion and provides Eco-friendly driving assistance in accordance with
the driving conditions and the acceleration.
■ Names and meaning of each icons
When EV Mode Hybrid battery (traction bat-
tery) status (P. 5 8 )
EV indicator
The EV indicator comes on when
driving the vehicle using only the
electric motor (traction motor).
Eco Driving Indicator Light
Turns on when the vehicle is
driven in Eco-friendly.
When HV Mode Hybrid System Indicator
Refer to “Reading Hybrid System
Indicator” below.
Average speed*
Average fuel consumption*
Use the displayed average fuel
consumption as a reference.
*: The current amount since the trip
meter was reset will be displayed.
These functions can be reset by
pressing and holding the “TRIP”
button.
EV driving range ( P. 58)

272 2-2. Instrument cluster
PRIUS PHV_OM_OM47818U_(U)
■Meaning of each icons
Percentage driven in EV mode
using the electric motor (trac-
tion motor) only
The percentage is shown as a
green bar.
Percentage driven in EV mode
jointly using the gasoline
engine and in HV mode
The percentage is shown as a red
bar.
Fuel consumption amount
Gives an indication of the amount
of fuel that has been consumed
by driving in
.
Electricity consumption amount
Gives an indication of the amount
of electricity that has been con-
sumed by driving in
.
Fuel amount conserved by
charging
Gives an indication of the amount
of fuel that has been conserved
by driving in
.

273
2-2. Instrument cluster
PRIUS PHV_OM_OM47818U_(U)
2
When driving
■
Resetting the data
Press and hold the “TRIP” button
while the screen you want to
reset is being displayed.
The bar display, percent display,
driving distance, electricity con-
sumption and fuel consumption
will be reset.
Odometer/trip meter/distance to empty
■ Switching the display
The display changes as follows
each time the “TRIP” button is
pressed. Also, if the button is
kept pressed down while the trip
meter is being displayed, the trip
meter will be reset to 0.

274 2-2. Instrument cluster
PRIUS PHV_OM_OM47818U_(U)
■Display items
● Odometer
● Trip meter
● Distance to empty Displays the total distance the vehicle has been
driven.
Displays the distance the vehicle has been driven
since the meter was last reset. Trip meters A and
B can be used to record and display different dis-
tances independently.
Displays the estimate
d maximum distance that
can be driven with the quantity of fuel remaining.
• This distance is computed based on your average fuel consumption. As a result, the actual distance
that can be driven may differ from that displayed.
• When only a small amount of fuel is added to the tank, the display may not be updated.
When refueling, turn the “POWER” switch off. If the
vehicle is refueled without turning the “POWER”
switch off, the display may not be updated.

282 2-2. Instrument cluster
PRIUS PHV_OM_OM47818U_(U)
■System check display
■ Ending display
 P. 243
■ Eco Driving Indicator Light
Eco Driving Indicator Light will turn on when driving power is lower than the
upper limit of Eco driving. It will turn off when the acceleration exceeds the
Eco driving accelerator upper limit or when the vehicle is stopped.
Eco Driving Indicator Light will not operate in the following conditions:
● The shift position is anything other than D.
● The driving mode is set to power mode. ( P. 247)
● The vehicle speed is approximately 80 mph (130 km/h) or higher.
Eco Driving Indicator Light is also displayed when 5-minute consumption, 1-
minute consumption or monthly fuel consumption record is displayed.
Eco Driving Indicator Light can be set to activated or deactivated. ( P. 277)
■ Hybrid System Indicator display when in EV mode
The movement of the bar in response to the operation of the accelerator
pedal may differ in accordance with the status of the hybrid battery (traction
battery). However, this does not indicate a malfunction.
After switching the “POWER” switch to
ON mode, “welcome to PRIUS” is dis-
played while system operation is
checked. When the system check is com-
plete, the normal screen will return.

283
2-2. Instrument cluster
PRIUS PHV_OM_OM47818U_(U)
2
When driving
■
Driving in Eco drive mode
The multi-information display will automatically switch the display to Hybrid
System Indicator, regardless of which display is currently being shown.
(P. 268)
■ Touch tracer display (if equipped)
● The touch tracer display can be set to not display even if the steering
switches are touched.
● Only the circular, rubber-covered switches have a built-in touch sensor.
Touching any of the other switches will not display the touch tracer dis-
play.
■ Display settings can be changed when
The vehicle speed is less than approximately 5 mph (8 km/h).
■ Engine speed
On hybrid vehicles, engine speed is precisely controlled in order to help
improve fuel efficiency and reduce exhaust emissions etc. There are times
when the engine speed that is displayed may differ even when vehicle oper-
ation and driving conditions are the same.
■ When the 12-volt battery is disconnected
The following data will be reset.
● Average fuel consumption
● Distance to empty
● Average vehicle speed
● EV driving ratio
● Clock
● Display settings
● Trip meter