battery TOYOTA PRIUS 2009 2.G Repair Manual

448
5-2. Steps to take in an emergency
PRIUS_U_(OM47614U)
If the electronic key does not operate properly
Locking and unlocking the doorsUsing the mechanical key
( P. 34) in order to perform
the following operations:
Locks all doors
Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again unlocks the other
doors.
Starting the hybrid system
To start the hybrid system, insert
the key into the key slot.
( P. 134)
If the electronic key battery is di scharged, the doors can be opened
by the mechanical key. The hybrid system can be still started by fol-
lowing the procedure.
■ Replacing the key battery
As this procedure is the temporary measure, it is recommended that the
electronic key battery be replaced immediately. ( P. 392)

5
When trouble arises
449
5-2. Steps to take in an emergency
PRIUS_U_(OM47614U)
If the 12 volt batter y is discharged
The following procedures may be used to start the hybrid system if
the vehicle’s 12 volt battery is discharged.
You can call your Toyota dealer, or qualified repair shop.
If you have a set of jumper (or boo ster) cables and a second vehi-
cle with a 12 volt battery, you can jump start your Toyota following
the steps below.
Open the hood and fuse block cover.
Open the exclusive jump start-
ing terminal cover.
STEP1
STEP2

450 5-2. Steps to take in an emergency
PRIUS_U_(OM47614U)
Connecting the jumper cables.
Exclusive jump starting terminal on your vehicle.
Positive (+) battery terminal on the second vehicle.
Negative (-) battery terminal on the second vehicle.
Connect the jumper cable to ground on your vehicle as shown in
the illustration.STEP3
ITY52P017

5
When trouble arises
451
5-2. Steps to take in an emergency
PRIUS_U_(OM47614U)
■
Starting the hybrid system when the battery is discharged
The hybrid system cannot be started by push-starting.
■ Avoiding a discharged 12 volt battery
● Turn off the headlights and the audio system while the hybrid system is
turned off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic, etc.
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately
five minutes to recharge the 12 volt battery of your vehicle.
Open and close any of the doors with the “POWER” switch
OFF.
Maintain the engine speed on the second vehicle and turn
the “POWER” switch to the ON mode, then start the vehi-
cle’s hybrid system.
Make sure the “READY” light comes on. If the “READY”
light will not come on and the hybrid system will not start
after you recharge the battery, do the following procedure.
Turn the hybrid system off. Open and close the driver’s
door. Then push the “POWER” switch briefly and firmly. If
the light does not come on, contact your Toyota dealer.
Once the vehicle’s hybrid syst em has started, remove the
jumper cables in the exact reverse order in which they were
connected.
Once the hybrid system starts, have the vehicle checked at your
Toyota dealer as soon as possible.STEP4
STEP5
STEP6
STEP7
STEP8

452 5-2. Steps to take in an emergency
PRIUS_U_(OM47614U)
■When the 12 volt battery is removed or discharged
The following systems must be initialized.
● Power windows (
P. 76)
● The hybrid system may not start. ( P. 446)
CAUTION
■Avoiding 12 volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12 volt battery.
● Make sure the jumper cable is connected to the correct terminal and that it
is not unintentionally in contact with any part other than the intended termi-
nal.
● Do not allow the jumper cables to come into contact with the “+” and “-” ter-
minals.
● Do not allow open flame or use matc hes, cigarette lighters or smoke near
the 12 volt battery.
■ 12 volt battery precautions
The 12 volt battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the 12 volt battery:
● When working with the 12 volt battery, always wear safety glasses and
take care not to allow any battery fluids (acid) to come into contact with
skin, clothing or the vehicle body.
● Do not lean over the 12 volt battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
● Do not allow children near the 12 volt battery.

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When trouble arises
453
5-2. Steps to take in an emergency
PRIUS_U_(OM47614U)
NOTICE
■
To prevent damaging the vehicle
The exclusive jump starting terminal is to be used when charging the 12 volt
battery from another vehicle in an emergency. It cannot be used to jump start
another vehicle.
■ When handling jumper cables
Be careful that the jumper cables do not become tangled in the cooling fan
or any of the belts when connecting or disconnecting them.

463
6-1. Specifications
6
Vehicle specifications
PRIUS_U_(OM47614U)
Electric motor (Traction motor)
Hybrid battery (Traction battery)
Ty p ePermanent magnet synchronous motor
Maximum output 50 kW
Maximum torque 400 N•m (40.8 kgf•m, 295 ft•lbf)
Ty p eNickel-Metal hydride battery
Voltage
7.2 V/module
Capacity6.5 Ah (3HR)
Quantity 28 modules
Overall voltage 201.6 V

466 6-1. Specifications
PRIUS_U_(OM47614U)
Electrical system
Transmission
12 volt battery
Open voltage at
68F (20 C): 12.6 
12.8 V Fully charged
12.2  12.4 V Half charged
11 . 5  11.9 V Discharged
(Voltage is checked 20 minutes after
the hybrid system and all lights are
turned off.)
Charging rates 3.5 A max.
Fluid capacity
Drain and refill3.8 qt. (3.6 L, 3.2 lmp.qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied by
vibration, and ultimately damage the transmission of your vehicle.

480 6-1. Specifications
PRIUS_U_(OM47614U)
Tire related termMeaning
Occupant distribution Distribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below
Production options
weight The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
Rim A metal support for a tire or a tire and tube
assembly upon which the tire beads are seated
Rim diameter
(Wheel diameter) Nominal diameter of the bead seat
Rim size designation Rim diameter and width
Rim type designation The industry manufacturer’s designation for a
rim by style or code
Rim width Nominal distance between rim flanges
Vehicle capacity
weight (Total load
capacity) The rated cargo and luggage load plus 150 lb.
(68 kg) times the vehicle’s designated seating
capacity
Vehicle maximum load
on the tire The load on an individual tire that is determined
by distributing to each axle its share of the
maximum loaded vehicle weight, and dividing
by two
Vehicle normal load
on the tire The load on an individual tire that is determined
by distributing to each axle its share of curb
weight, accessory weight, and normal occu-
pant weight (distributed in accordance with
Ta b l e 1
* below), and dividing it by two
Weather side The surface area of the rim not covered by the
inflated tire

489
6
Vehicle specifications
PRIUS_U_(OM47614U)
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Power window • After reconnecting or changing the
12 volt battery
• After changing a fuse P. 7 6
Engine oil mainte-
nance data • After changing engine oil
P. 365
Tire pressure warning
system • When rotating the tires on vehicles
differing with front and rear tire infla-
tion pressures.
• When changing the tire inflation pressure by changing traveling
speed or load weight, etc.
• When changing the tire size. P. 377
After reconnecting or performing
maintenance on the 12 volt battery,
the following items must be initia lized for normal system operation.