2010 TOYOTA PRIUS engine

172 2-1. Driving procedures
PRIUS_U (OM47668U) U.S.A.
■Shift position uses
*: Shown only while in “D” position.
■Selecting a driving mode
The following patterns can be selected to suit current driving and
operating conditions.
l
Shift positionFunction
PParking the vehicle or starting the hybrid system
RReversing
NNeutral
DNormal driving
BEngine braking position*

174 2-1. Driving procedures
PRIUS_U (OM47668U) U.S.A.
Changing shift ranges to “P” positionPush the “P” position switch with
the brake pedal pressed down.
The “P” position icon is displayed
on the instrument cluster, and the
indicator on the “P” position
switch comes on.
You can only shift to other posi-
tions from “P” when the brake
pedal is depressed.
When parking, check that the “P”
position icon is displayed on the
instrument cluster, and release
the brake pedal gently after
applying the parking brake.
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■Using engine brake
To use the engine braking, shift the shift lever to “B” position.
● During high speed driving, you may feel that deceleration by engine brak-
ing is less than that of a typical vehicle.
● Do not continue normal driving with the transmission in “B” for a long
time.
This may cause decreased fuel economy. To prevent this, use “D” for
normal driving.

190 2-2. Instrument cluster
PRIUS_U (OM47668U) U.S.A.
Energy monitorThe energy monitor displays the operating condition of the hybrid
system, showing such information as the gasoline engine operating
status, and the usage and regeneration status of electrical energy.
Gasoline engine
Hybrid battery (traction bat-
tery)
Electric motor (traction motor)
The energy flow is indicated using arrows which vary in color and
direction depending on the driving conditions (when accelerating/
decelerating, etc.).
Multi-information display*
When the vehicle is powered
by the electric motor (traction
motor)
When the vehicle is powered
by both the gasoline engine
and the electric motor (traction
motor)

191
2-2. Instrument cluster
2
When driving
PRIUS_U (OM47668U) U.S.A.
*: The images are examples only, and may vary slightly from actual condi-
tions.
■ Hybrid battery (traction battery) status
The amount of charge remain-
ing in the hybrid battery (traction
battery) is shown by 8 bars.Low
Full
Multi-information display*
When the vehicle is powered
by the gasoline engine
When the vehicle is charging
the hybrid battery (traction bat-
tery)
When there is no energy flow

193
2-2. Instrument cluster
2
When driving
PRIUS_U (OM47668U) U.S.A.
■
Hybrid System Indicator
Charge area
Eco area
Power area
Hybrid Eco area
As shown below, the driving condit ions of the vehicle can be con-
firmed by checking the status of the indicator bar.
Multi-information display*1Eco Driving Indicator Light
Charge area: 
Shows that energy is
being recovered via the
regenerative brake.
( P. 29)
On
Hybrid Eco area:

Shows that gasoline
engine power is not
being used very
often.
*2
Eco area: 
Shows that the vehicle
is being driven in an
environmentally friendly
(fuel efficient) manner.

194 2-2. Instrument cluster
PRIUS_U (OM47668U) U.S.A.
*1: The images are examples only, and may vary slightly from actual condi-tions.
*2: The gasoline engine will automatically stop and restart under various conditions.
5-minute/1-minute interval fuel consumption display
The fuel consumption display shows the average fuel consumption
and the regenerated energy amount in 5-minute or 1-minute inter-
vals.
■ Switching between 5-minut e and 1-minute intervals
Press and hold the “DISP” switch
while either the 5-minute interval
or 1-minute interval display is
being shown.
The display will alternate with
each press of the button.
Multi-information display*1Eco Driving Indicator Light
Power area: 
Shows that an environ-
mentally friendly driv-
ing range is being
exceeded (during full
power driving etc.). Off

246 2-4. Using other driving systems
PRIUS_U (OM47668U) U.S.A.
When the Enhanced VSC/TRAC is operatingIf the vehicle is in danger of slip-
ping or if the front wheels spin,
the slip indicator light flashes to
indicate that the Enhanced VSC/
TRAC have been engaged.
A buzzer (intermittent) sounds to
indicate that Enhanced VSC is
operating.
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■Sounds and vibrations caused by the ABS, brake assist, TRAC and
Enhanced VSC
● A sound may be heard from the engine compartment when the hybrid
system is started, just after the vehicle begins to move, if the brake pedal
is depressed forcefully or repeatedly, or 1 - 2 minutes after the hybrid
system is stopped. This sound does not indicate that a malfunction has
occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■ EPS operation sound
When the steering wheel operates, a mo tor sound (whirring sound) may be
heard. 
This does not indicate a malfunction.

261
2-5. Driving information
2
When driving
PRIUS_U (OM47668U) U.S.A.
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropri-
ate to the prevailing weather conditions.
■ Pre-winter preparations
●Use fluids that are appropriate to the prevailing outside tem-
peratures.
• Engine oil
• Engine/power control unit coolant
• Washer fluid
● Have a service technician inspect the level and specific grav-
ity of 12 volt battery electrolyte.
● Have the vehicle fitted with four snow tires or purchase a set
of tire chains for the front tires.
Ensure that all tires are the same size and brand, and that chains
match the size of the tires.