2010 TOYOTA PRIUS brake switch

470 4-3. Do-it-yourself maintenance
PRIUS_U (OM47668U) U.S.A.
FUSEAmpereCircuit
25 RR WIP 20A Rear window wiper and washer
26 WIP 30A Windshield wipers
27 MET 7.5A Gauges and meters
28 IGN 10ABrake system, driver support sys-
tem, multiport fuel injection sys-
tem/sequential multiport fuel
injection system, SRS airbag sys-
tem, occupant detection sensor,
power windows, smart key system
29 PANEL 10AAir conditioning system, emer-
gency flashers, seat heaters,
transmission, “P” position switch,
navigation system, Solar Ventila-
tion System, Remote Air Condi-
tioning System, advanced parking
guidance system, headlight
cleaner, front passenger’s seat
belt reminder light, headlight level-
ing system, glove box light, clock,
audio system
30 TAIL 10AHeadlight leveling system, park-
ing lights, tail lights, license plate
lights, front fog lights, side marker
lights

488 5-1. Essential information
PRIUS_U (OM47668U) U.S.A.Towing eyelet
ITO51P107
■
Emergency towing procedure
Release the parking brake.
Turn the “POWER” switch to ON mode.
Put the shift lever in “N”.
CAUTION
■While towing
● Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive
stress on the emergency towing eyelet and the cable or chain.
● If the hybrid system is not operating, the power assist for the brakes and
steering will not function, making steering and braking more difficult.
NOTICE
■To prevent causing serious dama ge to the transmission
Never tow this vehicle from the rear with the four wheels on the ground. 
This may cause serious damage to the transmission.
STEP1
STEP2
STEP3

5
When trouble arises
505
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
■If the tire pressure warning light comes on after blinking for 1
minute frequently
If the tire pressure warning light comes on after blinking for 1 minute fre-
quently when the “POWER” switch is
turned to ON mode, have it
checked by your Toyota dealer.
■ Customization that can be co nfigured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled. 
(Customizable features P. 587)
However, Toyota recommends that the seat belt reminder buzzer be opera-
tional to alert the driver and front passenger that the seat belts are not fas-
tened.
CAUTION
■ When the electric power steering warning light comes on
The steering wheel may become extremely heavy. 
If the steering wheel becomes heavier than usual when operating, firmly
hold and operate it using more force than usual.
■
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could
cause loss of vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is pr obable that you have a flat tire. Check the tires.
If the tire is flat, change to the spare tire and have the flat tire repaired
by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air loss should occur
The tire pressure warning syste m may not activate immediately.

5
When trouble arises
521
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Interior
buzzerExterior buzzerWarning messageDetailsCorrection procedure
Contin-
uous Contin-
uous
(Displayed alternately) (Flashing) An open door
other than the
driver’s door is
closed while the
electronic key is
outside the
detection range
and the
“POWER”
switch is in
ACCESSORY
or ON mode
with the shift
position not in
“P”.
• Push the
“P” posi-
tion
switch.
• Confirm the loca-
tion of the
electronic
key.
Once  The electronic
key battery is
low.Replace
the bat-
tery.

( P. 460)
Once 
(Flashing)An open door
has been
closed and the
“POWER”
switch has been
turned twice to
the ACCES-
SORY mode
from OFF. Press the
“POWER”
switch
while
applying
the
brakes.

5
When trouble arises
539
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Emergency start function
When the hybrid system does not start, the following steps can be
used as an interim measure to st art the hybrid system if the
“POWER” switch is functioning normally.
Set the parking brake.
Set the “POWER” switch to the ACCESSORY mode.
Push and hold the “POWER” switch for about 15 seconds
while depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Ha ve the vehicle checked by your
Toyota dealer.
■ The interior lights and headlights do not turn on, or the horn
does not sound.
One of the following may be the cause of the problem.
●One or both of the 12 volt ba ttery terminals may be discon-
nected.
● The 12 volt battery may be discharged. ( P. 543)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3

542 5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Changing “POWER” switch modes and starting the hybrid sys-
temApply the brakes and touch the
Toyota emblem side of the
electronic key to the “POWER”
switch.
An alarm will sound to indicate
that the start function cannot
detect the electronic key that is
touched to the “POWER” switch if
any of the doors is opened and
closed while the key is touched to
the switch.
To change “POWER” switch modes: Within 10 seconds of the
buzzer sounding, release the brake pedal and press the
“POWER” switch. Modes can be changed each time the
switch is pressed. ( P. 164) 
To start the hybrid system: Press the “POWER” switch within
10 seconds after the buzzer s ounds, keeping the brake pedal
depressed.
In the event that the “POWER” swit ch still cannot be operated, con-
tact your Toyota dealer.
ITO52P165
STEP1
■ Stopping the hybrid system
Push the “P” position switch and press the “POWER” switch as you normally
do when stopping the hybrid system.
■ Replacing the key battery
As this procedure is the temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery depletes.
(P. 460)
STEP2

5
When trouble arises
553
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
If the vehicle becomes stuck
CAUTION
■When attempting to free a stuck vehicle
If you choose to rock the vehicle back and forth to free it, make sure the sur-
rounding area is clear, to avoid striking other vehicles, objects or persons.
The vehicle may also lunge forward or lunge back suddenly as it becomes
free. Use extreme caution.
■ When shifting the shift lever
Be careful not to shift the shift lever with the accelerator pedal depressed. 
This may lead to unexpected rapid acceleration of the vehicle that may
cause an accident and result in death or serious injury.
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt, or snow.
Stop the hybrid system. Set t he parking brake and push the
“P” position switch.
Remove the mud, snow, or sand from around the stuck tire.
Place wood, stones or some other material to help provide
traction under the tires.
Restart the hybrid system.
Shift the shift lever to “D” or “R” and carefully apply the
accelerator to free the vehicle.STEP1
STEP2
STEP3
STEP4
STEP5

601
PRIUS_U (OM47668U) U.S.A.
Alphabetical index
Alphabetical index
A/C ............................................ 270
ABS........................................... 245
Active head restraint................. 78
Air conditioning filter .............. 457
Air conditioning systemAir conditioning filter ............. 457
Automatic air conditioning 
system................................ 270
Remote Air Conditioning 
System ............................... 285
Steering wheel climate 
remote control switches ..... 280
Airbags Airbag operating conditions .. 117
Airbag precautions for your 
child.................................... 121
Airbag warning light .............. 497
Curtain shield airbag 
precautions ........................ 121
Front passenger occupant 
classification system .......... 126
General airbag precautions .. 121
Locations of airbags ............. 113
Modification and disposal of 
airbags ............................... 125
Side airbag precautions........ 121
Side and curtain shield airbags 
operating conditions ........... 117
SRS airbags ......................... 113
Antenna .................................... 298
Anti-lock brake system ........... 245
Armrest .................................... 383
Audio input .............................. 322
Audio system
Antenna ................................ 298
Audio input ........................... 322
AUX adapter ......................... 322
CD player/changer ............... 303
MP3/WMA disc ..................... 311
Optimal use .......................... 319
Portable music player ........... 322
Radio .................................... 294
Steering switches ................. 323 Automatic headlight leveling

system ....................................206
Automatic light control 
system ....................................206
AUX adapter .............................322
Auxiliary boxes ........................375
Back door
Back door ................................72
Smart key system... .................43
Wireless remote control ..........63
Back-up lights Replacing light bulbs .............472
Wattage .................................567
Battery Checking ...............................436
Hybrid battery 
(traction battery)....................32
If the vehicle 12 volt battery is 
discharged ..........................543
Preparing and checking 
before winter .......................261
Bluetooth
®................................326
Bottle holder .............................374
Brake Fluid ......................................432
Parking brake ........................179
Brake assist ..............................245
Break-in tips .............................151
Brightness control Instrument light control ..........184
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