Page 408 of 568

408 4-3. Do-it-yourself maintenance
PRIUS v_OM_OM47840U_(U)
■Use a CR1632 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appli-
ance shops or camera stores.
● Replace only with the same or equivalent type recommended by the
manufacturer.
● Dispose of used batteries according to local laws.
■ If the electronic key battery is depleted
The following symptoms may occur:
●The smart key system and wireless remote control will not function prop-
erly.
● The operational range will be reduced.
CAUTION
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other component inside the remote control.
● Do not bend either of the battery terminals.
Page 413 of 568
413
4-3. Do-it-yourself maintenance
PRIUS v_OM_OM47840U_(U)
4
Maintenance and care
FUSEAmpereCircuit
12 P CON MAIN 7.5A P position control system, trans-
mission
13 AM2 7.5A Power management system
14 ECU-B2 7.5A Smart key system
15 MAYDAY 10A MAYDAY
16 ECU-B3 10A Air conditioning system
17 TURN & HAZ 10A Turn signal lights
18 ETCS 10AMultiport fuel injection system/
sequential multiport fuel injection
system
19 ABS MAIN
NO.1 20A Anti-lock brake system
20 P/I 2 40AHorn, right-hand headlight (low
beam), left-hand headlight (low
beam), back-up lights
21 ABS MTR 1 30A Anti-lock brake system
22 ABS MTR 2 30A Anti-lock brake system
23 H-LP HI MAIN 20A H-LP HI RH, H-LP HI LH,
headlight switch, daytime running
light system
24 HV BATT 10A No circuit
25 DRL 7.5A Daytime running light system
26 P/I 1 60A IG2, EFI MAIN, BATT FAN
27 EPS 60A Electric power steering
28 PCU 10A Inverter and converter
29 IGCT NO.2 10A Hybrid system, P position control
system, inverter and converter
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414 4-3. Do-it-yourself maintenance
PRIUS v_OM_OM47840U_(U)
FUSEAmpereCircuit
30 MIR HTR 10A Outside rear view mirror defoggers
31 RAD NO.1 15A Audio system, navigation system
32 DOME 10ADoor courtesy lights, personal
lights, interior lights, front foot
lights, vanity lights, inside rear
view mirror, garage door opener,
overhead console
33 ECU-B 7.5ASmart key system, multiplex com-
munication system, personal
lights, gauges and meters, occu-
pant detection system (ECU and
sensors)
34 H-LP LH HI 10A Left-hand headlight (high beam)
35 H-LP RH HI 10A Right-hand headlight (high beam)
36 EFI NO.2 10AMultiport fuel injection system/
sequential multiport fuel injection
system
37 IGCT NO.3 10A Cooling system
38 SPARE 30A Spare fuse
39 SPARE 10A Spare fuse
40 SPARE 7.5A Spare fuse
41 EFI MAIN 20AMultiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.2
42 BATT FAN 10A Battery cooling fan
43 IG2 20AMultiport fuel injection system/
sequential multiport fuel injection
system, MET-IGN, IGN, hybrid
system
Page 417 of 568
417
4-3. Do-it-yourself maintenance
PRIUS v_OM_OM47840U_(U)
4
Maintenance and care
FUSEAmpereCircuit
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 system
(ECU and sensors), smart key
system
29 PANEL 10AAir conditioning system, emer-
gency flashers, seat heaters,
transmission, P position switch,
navigation system, advanced
parking guidance system, head-
light cleaner, seat belt reminder
light, headlight leveling system,
glove box light, clock, audio sys-
tem
30 TAIL 10AHeadlight leveling system, park-
ing lights, tail lights, license plate
lights, front fog lights, side marker
lights
Page 435 of 568
When trouble arises5
435
PRIUS v_OM_OM47840U_(U)
5-1. Essential informationEmergency flashers ......... 436
If your vehicle needs to be towed ........................ 437
If you think something is wrong ......................... 443
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds ........................... 444
If you have a flat tire......... 462
If the hybrid system will not start .......................... 476
If you lose your keys ........ 478
If the electronic key does not operate properly....... 479
If the 12-volt battery is discharged .................. 481
If your vehicle overheats ....................... 487
If the vehicle becomes stuck .............................. 491
If your vehicle has to be stopped in an
emergency ..................... 493
Page 437 of 568
5
When trouble arises
437
5-1. Essential information
PRIUS v_OM_OM47840U_(U)
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your hybrid transmission.
Contact your Toyota dealer before towing.
● The hybrid system is operating but the vehicle will not move.
● The vehicle makes an abnormal sound.
If there is a malfunction in the P position control system, the smart
key system or the immobilizer system , or if the 12-volt battery is dis-
charged, the vehicle cannot be tow ed with the front wheels on the
ground, as the front wheels may be locked. In this case, transport the
vehicle with both front wheels or all four wheels lifted.
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 flat bed truck.
Use a safety chain system for all to wing, and abide by all state/pro-
vincial and local laws.
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5
When trouble arises
459
5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
Follow the correction procedures.
After taking the specified steps to correct the suspected problem,
check that the warning light turn off.
InteriorbuzzerExterior buzzerWarning lightDetailsCorrection procedure
Once
The electronic key
is not detected
when an attempt
is made to start
the hybrid system.
Start the hybrid sys-
tem with the electronic
key present.
The “POWER”
switch has been
pressed while the
electronic key
was not detected
inside the vehicle.
Confirm the location
of the electronic key.
(P. 60, 66)
If the warning light
does not extinguish
even though the elec-
tronic key is within
operating range,
touch the electronic
key to the “POWER”
switch while depress-
ing the brake pedal
(P. 480)
Transmission
between the elec-
tronic key and the
vehicle is being
blocked, or the bat-
tery in the electronic
key has been
depleted.
Page 460 of 568
460 5-2. Steps to take in an emergency
PRIUS v_OM_OM47840U_(U)
InteriorbuzzerExterior buzzerWarning lightDetailsCorrection procedure
Once
Driving has been
started without the
correct electronic
key inside the
vehicle.
Confirm the location
of the electronic key.
Once3 times
The electronic key
was carried out-
side the vehicle
and a door other
than the driver’s
door was opened
and closed while
the “POWER”
switch was in a
mode other than
off.
Bring the electronic
key back into the vehi-
cle.
The electronic key
was carried out-
side the vehicle
and the driver’s
door was opened
and closed while
the shift position P
was selected
without turning off
the “POWER”
switch.
Turn the “POWER”
switch off or bring the
electronic key back
into the vehicle.