2010 TOYOTA PRIUS brake

468 4-3. Do-it-yourself maintenance
PRIUS_U (OM47668U) U.S.A.■
Left side instrument panel
FUSEAmpereCircuit
1 CIG 15A Power outlets
2 ECU-ACC 10AMultiplex communication system,
outside rear view mirrors, driver
support system, audio system,
navigation system
3 PWR OUTLET 15A Power outlets
4 SEAT HTR FR 10A Seat heater
5 SEAT HTR FL 10A Seat heater
6 DOOR NO.1 25A Power door lock system
7 PSB 30A Pre-Collision System
8 PWR SEAT FR 30A Front seat lumber support
9 DBL LOCK 25A Tilt & telescopic steering
10 FR FOG 15A Front fog lights
11 PWR SEAT FL 30A Front seat lumber support
12 OBD 7.5A On-board diagnosis system
13 RR FOG 7.5A No circuit
14 STOP 10AStop lights, high mounted stop-
light, brake system, power win-
dows, driver support system
ITO43P133
1
2
3 4
56 7
8
910
11 12
13
14 15
16 17
18 19
23 24 25
26
2728
29
30
20 21 22

469
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U (OM47668U) U.S.A.
FUSEAmpereCircuit
15 P FR DOOR 25A Power windows
16 D FR DOOR 25A Power windows
17 DOOR RR 25A Power windows
18 DOOR RL 25A Power windows
19 S/ROOF 30A Electric moon roof
20 ECU-IG NO.1 10A Electric cooling fans, multiplex
communication system
21 ECU-IG NO.2 10A Driver support system, Pre-Colli-
sion System, LKA system, inside
rear view mirror, garage door
opener, yaw rate & G sensor,
brake system, electric power
steering, navigation system, elec-
tric moon roof, tire pressure warn-
ing system, seat belt
pretensioners, audio system,
emergency flashers, turn signal
lights, windshield wipers, headlight
cleaner
22 GAUGE 10A Headlight leveling system, front
passenger’s seat belt reminder
light, gauges and meters
23 A/C 10A Air conditioning system, Solar
Ventilation System, Remote Air
Conditioning System
24 WASHER 15A Windshield washer

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

5
When trouble arises
487
5-1. Essential information
PRIUS_U (OM47668U) U.S.A.
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your transmission. Contact
your Toyota dealer before towing.
● The hybrid system is operating, but the vehicle will not move.
● The vehicle makes an abnormal sound.
Emergency towing
If a tow truck is not available, in an emergency your vehicle may be
temporarily towed using a cable or chain secured to the emergency
towing eyelet. This should only be attempted on hard, surfaced roads
for short distances below 18 mph (30 km/h). 
A driver must be in the vehicle to steer and operate the brakes. The
vehicle’s wheels, drive train, axles, steering and brakes must be in
good condition.
If towing is necessary, we recommend having your vehicle towed by
your Toyota dealer or a commerci al towing service, using a lift-type
truck or a flat bed truck. 
Use a safety chain system for all to wing, and abide by all state/pro-
vincial and local laws.
If towing from the front, the vehicle ’s rear wheel and axles must be in
good condition. ( P. 491)
If they are damaged, use a towing dolly or flat bed truck.

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
491
5-1. Essential information
PRIUS_U (OM47668U) U.S.A.
Towing with a wheel lift-type truck
From front Release the parking brake.
From rear Use a towing dolly under the
front wheel.
ITO51P104
ITO51P105

5
When trouble arises
493
5-1. Essential information
PRIUS_U (OM47668U) U.S.A.
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your Toyota dealer as soon as
possible.
■ Visible symptoms
●Fluid leaks under the vehicle 
(Water dripping from the air cond itioning after use is normal.)
● Flat-looking tires or uneven tire wear
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
■ Operational symptoms
●Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, s pongy feeling, pedal almost
touches the floor

494
5-1. Essential information
PRIUS_U (OM47668U) U.S.A.
Event data recorder
In a crash or a near car crash eventThe SRS airbag sensor assembly contains the EDR. In a crash or a
near car crash event, this device may record some or all of the follow-
ing information:
● Gasoline engine speed
● Whether the brake pedal was applied or not
● Vehicle speed
● To what extent the accelerator pedal was depressed
● Position of the transmission shift lever
● Whether the driver and front passenger wore seat belts or not
● Driver’s seat position
● SRS airbag deployment data
● SRS airbag system diagnostic data
● Front passenger’s occupant classification
The information above is intended to be used for the purpose of
improving vehicle safety performan ce. Unlike general data recorders,
the EDR does not record sound data such as conversation between
passengers.
Your vehicle has computers that monitor and control certain aspects
of your vehicle. These computers assi st in driving and maintaining
optimal vehicle performance.
Besides storing data useful for troubleshooting, there is an event
data recorder (EDR) that records data in a crash or a near car crash
event.