battery TOYOTA PRIUS 2012 3.G Owner's Guide

201
2-1. Driving procedures
2
When driving
■
Automatic cancelation of EV drive mode
When driving in EV drive mode, the gasoline engine may automatically
restart in the following situations. When EV drive mode is canceled, a buzzer
will sound and the EV drive mode indicator will flash and go off.
●The hybrid battery (traction battery) becomes low.
● Vehicle speed becomes high.
● The accelerator pedal is depressed firmly or the vehicle is on a hill etc.
■ Possible driving distance when driving in EV drive mode
In EV drive mode, it is possible to drive up to about 1.3 mile (2 km) if driving
at a speed of about 25 mph (40 km/h) or less. (The distance that is possible
depends on the hybrid battery [traction battery] level and driving conditions.)
■ Changing a driving mode when in EV drive mode
EV drive mode can be used in conjunction with Eco drive mode and power
mode.
However, EV drive mode may be automatically canceled when used in con-
junction with power mode.
■ Fuel economy
PRIUS is designed to achieve the best possible fuel economy during normal
driving (using the gasoline engine and electric motor [traction motor]). Driv-
ing in EV drive mode more than necessary may lower fuel economy.
CAUTION
■While driving
When driving in EV drive mode, pay special attention to the area around the
vehicle. Because there is no engine noise, pedestrians, people riding bicy-
cles or other people and vehicles in the area may not be aware of the vehicle
starting off or approaching them, so take extra care while driving.

207
2-1. Driving procedures
2
When driving
●
Situations where the shift position will automatically change to N:
• When the P position switch is pressed while the vehicle is running.
*1
• When an attempt is made to select the R position by moving the shift
lever when the vehicle is moving forward.
*2
• When an attempt is made to select the D position by moving the shiftlever when the vehicle is moving in reverse.
*3
• When an attempt is made to change the shift position from R to B bymoving the shift lever.
*1: Shift position may be changed to P when driving at extremely lowspeeds.
*2: Shift position may be changed to R when driving at low speeds.
*3: Shift position may be changed to D when driving at low speeds.
■ Reverse warning buzzer
When shifting into R, a buzzer will sound to inform the driver that the shift
position is in R.
■ Automatically P position selection function
When the shift position is in a position other than P, pressing the “POWER”
switch with the vehicle stopped completely will cause the shift position to
change to P automatically, and then the “POWER” switch will turn off.
■ If the shift position cannot be shifted from P
There is a possibility that the 12-volt battery is discharged. Check the 12-volt
battery in this situation. ( P. 543)

208 2-1. Driving procedures
■About engine braking
When shift position B is selected, releasing the accelerator pedal will apply
engine braking.
●When the vehicle is driven at high speeds, compared to ordinary gaso-
line-fueled vehicles, the engine braking deceleration is felt less than that
of other vehicles.
● The vehicle can be accelerated even when shift position B is selected.
If the vehicle is driven continuously in the B position, fuel efficiency will
become low. Usually, shift the shift position to D.
■ When driving with cruise control or radar cruise control activated
Even if switching the driving mode to power mode with the intent of enabling
engine braking, engine braking will not activate because cruise control or
radar cruise control will not be canceled.
■ When canceling Eco drive mode/power mode
●Press the switch again. Also, power mode will be canceled automatically
when the “POWER” switch is turned off. However, Eco drive mode will
not be canceled automatically until the switch is pressed, even if the
“POWER” switch is turned off.
● When in Eco drive mode, if the power mode switch is pressed or the
operation is reversed, the mode will switch to that of the last switch to be
pressed.
■ Switching the drive mode when in EV drive mode
P. 201
■ After recharging/reconnecting the 12-volt battery
P. 433

210 2-1. Driving procedures
NOTICE
■Hybrid battery (tract ion battery) charge
If the shift position is in N, the hybrid battery (traction battery) will not be
charged. To help prevent the battery from discharging, avoid leaving the N
position selected for an extended period of time.
■ Situations where P position control system malfunctions are possible
If any of the following situations occurs, P position control system malfunc-
tions are possible.
Immediately stop the vehicle in a safe place on level ground, apply the park-
ing brake, and then contact your Toyota dealer.
●When the “P LOCK MALFUNCTION” warning message appears on the
multi-information display. ( P. 509)
● When the shift position indicator remains off.
■ Notes regarding shift lever an d P position switch operation
Avoid repeatedly operating the shift lever and P position switch in quick suc-
cession.
The system protection function may activate and it will not be temporarily
possible to shift the shift position other than P. If this happens, please wait
for a while before attempting to change the shift position again.

225
2-2. Instrument cluster
2
When driving
Hybrid System Indicator
Hybrid 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
Hybrid battery (traction bat-
tery) status (P. 4 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.
Hybrid System Indicator
Refer to “Reading Hybrid System
Indicator” below.
Average speed*
Average fuel consumption/eco
savings
*
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.
The display can be switched
between average fuel consump-
tion/average speed and eco sav-
ings. ( P. 232)

241
2-2. Instrument cluster
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. 225)
■ Touch tracer display
●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
● Clock
● Display settings
● Trip meter

248 2-2. Instrument cluster
■When driving on snowy roads or in other bright environments
When the highest level of brightness has been reached, the display can b\
e
made even brighter by pressing and holding “ ” on the brightness control
button.
Pressing “ ” on the brightness control button or turning the “POWER” switch
off will cause the brightness level to revert to the original level.
■ Display speed setting function
The speedometer can be set to display only when a desired vehicle speed is
reached.
Press and hold the “HUD” main switch while the vehicle is stopped
and while the head-up display is showing only the speedometer.
The speedometer will begin to flash.
Set the desired display speed on the speedometer by pressing “ ”
and “ ” on the display position adjustment button.
Press “ ” to raise the speed and “ ” to lower. The speed will change
by 1 mph (1.6 km/h) each time the button is pressed, and continu-
ously by 10 mph (16 km/h) when the button is pressed and held.
Press and hold the “HUD” main switch to finish setting.
■ Head-up display
The head-up display may seem dark and hard to see when viewed through
sunglasses, especially polarized sunglasses.
Adjust the brightness of the head-up display or remove your sunglasses.
■ When the 12-volt battery is disconnected
The head-up display settings will be reset.
STEP 1
STEP 2
STEP 3

255
2-3. Operating the lights and windshield wipers
2
When driving
■
Automatic headlight leveling system (if equipped)
The level of the headlights is automatically adjusted according to the number
of passengers and the loading condition of the vehicle to ensure that the
headlights do not interfere with other road users.
■ Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features P. 590)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is
off.

257
2-3. Operating the lights and windshield wipers
2
When driving
■
Fog lights can be used when
The headlights are on in low beam.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is
off.
Ty p e B
Turns the fog lights
off
Turns the fog lights
on

261
2-3. Operating the lights and windshield wipers
2
When driving
CAUTION
■
Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes
warm. The fluid may freeze on the windshield and cause low visibility. This
may lead to an accident, resulting in death or serious injury.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■ When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may over-
heat.
■ When a nozzle becomes blocked
In this case, contact your Toyota dealer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.
■ To prevent 12-volt battery discharge
Do not leave the wipers on longer than necessary when the hybrid system is
off.