2010 TOYOTA PRIUS light

546 5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
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 matches , 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.

548
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
If your vehicle overheats
Correction procedures■ If the high coolant temperatur e warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air condition-
ing system.
Check to see if steam is coming out from under the hood.
If you see steam: 
Stop the hybrid system. Carefully lift the hood after the
steam subsides and then restart the hybrid system.
If you do not see steam: 
Leave the hybrid system operating and carefully lift the
hood.
The following may indicate that your vehicle is overheating:
● The high coolant temperature warn ing light comes on or flashes:
The engine may be overheating.
● “HYBRID SYSTEM OVERHEAT” is shown on the multi-informa-
tion display: 
The power control unit may be overheating.
Follow the correction procedure as described below.
STEP1
STEP2

5
When trouble arises
549
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Check to see if the cooling fans are operating.
If the fans are operating: 
Wait until the high coolant temperature warning light goes
off and then stop the hybrid system.
If the fans are not operating:  Stop the hybrid system immedi ately and call your local
Toyota dealer.
After the hybrid system has
cooled down sufficiently, check
the engine coolant level and
inspect the radiator core (radia-
tor) for any leaks.
If necessary, add engine coolant
up to the “FULL” line.
Water can be used in an emer-
gency measure if engine coolant
is unavailable. (P. 562)
STEP3
STEP4
ITO52P130
STEP5

563
6-1. Specifications
6
Vehicle specifications
PRIUS_U (OM47668U) U.S.A.
Electrical system
Transmission
*:The fluid capacity is the quantity of reference. If replacement is necessary,
contact your Toyota dealer.
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 4.2 A max.
Fluid capacity*3.5 qt. (3.3 L, 2.9 Imp.qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
ultimately damage the transmission of your vehicle.

567
6-1. Specifications
6
Vehicle specifications
PRIUS_U (OM47668U) U.S.A.
Light bulbs
A: H11 halogen bulbs

B: HB3 halogen bulbs 
C: Wedge base bulbs (clear) 
D: Wedge base bulbs (amber) 
E: Double end bulbs 
*: If equipped
Light BulbsBulb No.WTy p e
ExteriorHeadlights
Low beam (halogen bulbs)
*
High beam 
9005 55
60A
B
Front fog lights
* 55 A
Parking lights W5W 5 C
Front side marker lights W5W 5 C
Front turn signal lights WY21W 21 D
Rear turn signal lights WY21W 21 D
Back-up lights W21W 21 C
License plate lights W5W 5 C
InteriorPersonal/interior lights
5C
Rear interior lights 8E
Door courtesy lights 5C
Vanity lights 8C
Luggage compartment light 5E

568
6-1. Specifications
PRIUS_U (OM47668U) U.S.A.
Fuel infor mation
■Fuel tank opening fo r unleaded gasoline
To help prevent incorrect fueling, your Toyota has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
■ If your engine knocks
● Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time while acceler-
ating or driving uphill. This is normal and there is no need for concern.
■ Gasoline quality
In very few cases, driveability problems may be caused by the brand of gas-
oline you are using. If driveability problems persist, try changing the brand of
gasoline. If this does not correct the problem, consult your Toyota dealer.
Your vehicle must use only unleaded gasoline. 
Select octane rating 87 (Research Octane Number 91) or higher. Use
of unleaded gasoline with an octane rating lower than 87 may result
in engine knocking. Persistent kno cking can lead to engine damage.
At minimum, the gasoline you use should meet the specifications
of ASTM D4814 in the U.S.A. and CGSB3.5-M93 in Canada.

583
6-1. Specifications
6
Vehicle specifications
PRIUS_U (OM47668U) U.S.A.
Tire related termMeaning
Intended outboard
sidewall (a)The sidewall that cont
ains a whitewall, bears
white lettering, or bears manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other
sidewall of the tire, or
(b)The outward facing sidewall of asymmetrical
tire that has a particular side that must always
face outward when mounted on a vehicle
Light truck (LT) tire A tire designated by its manufacturer as prima-
rily intended for use on lightweight trucks or
multipurpose passenger vehicles
Load rating The maximum load that a tire is rated to carry
for a given inflation pressure
Maximum load rating The load rating for a tire at the maximum per-
missible inflation pressure for that tire
Maximum permissible
inflation pressure The maximum cold inflation pressure to which
a tire may be inflated
Measuring rim The rim on which a tire is fitted for physical
dimension requirements
Open splice Any parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameter The overall diameter of an inflated new tire
Overall width The linear distance between the exteriors of
the sidewalls of an inflated tire, including eleva-
tions due to labeling, decorations, or protective
bands or ribs

589
6-2. Customization
6
Vehicle specifications
PRIUS_U (OM47668U) U.S.A.
ItemFunctionDefault settingCustomized
setting
Door lock
( P. 69,
541) Unlocking using a key
Driver’s door
unlocked in 1-
step, all doors
unlocked in 2- step All doors
unlocked in 1- step
Speed-detecting auto-
matic door lock function OFF
ON
Shifting the shift posi-
tion to any position
other than “P” locks all
doors ON
OFF
Shifting the shift posi-
tion to “P” unlocks all
doors ON
OFF
Opening driver’s door
unlocks all doors OFF
ON
Automatic
light control
system 
( P. 206) Light sensor sensitivity Level 3 Levels 1 to 5
Time elapsed before
headlights automati-
cally turn off after doors
are closed
30 seconds0 seconds
60 seconds
90 seconds