Page 586 of 792
586
PRIUS PRIME_OM_OM47D13U_(U)
7-3. Do-it-yourself maintenance
Engine compartment
Engine coolant reservoir ( P. 590)
Fuse boxes ( P. 636)
Engine oil level dipstick ( P. 587)
Engine oil filler cap ( P. 588)
Brake fluid reservoir ( P. 596) Washer fluid tank (
P. 598)
12-volt battery ( P. 593)
Power control unit coolant
reservoir ( P. 590)
Radiator ( P. 592)
Condenser ( P. 592)
Electric cooling fans1
2
3
4
5
6
7
8
9
10
11
Page 636 of 792
636
PRIUS PRIME_OM_OM47D13U_(U)
7-3. Do-it-yourself maintenance
Checking and replacing fuses
Turn the power switch off.
Confirm that the charging connector is not connected. Also, do not use the
Remote Air Conditioning System during the procedure.
Open the fuse box cover.
Engine compartme nt type A fuse box
While pushing the 2 claws, lift
up the cover.
When closing the cover, make
sure to attach the 2 claws.
Engine compartment type B fuse box
While pushing the 3 claws, lift
up the cover.
When closing the cover, make
sure to attach the 3 claws.
Left side instrument panel
Remove the lid.
Make sure to press the claw
during removal or installation.
If any of the electrical components do not operate, a fuse may
have blown. If this happens, che ck and replace the fuses as nec-
essary.
1
2
Page 637 of 792
PRIUS PRIME_OM_OM47D13U_(U)
6377-3. Do-it-yourself maintenance
7
Maintenance and care
Remove the fuse.
Only type A fuse can be
removed using the pullout tool.
Check if the fuse is blown.Normal fuse
Blown fuse
Replace the blown fuse with a new fuse of an appropriate ampera ge rat-
ing. The amperage rating can be found on the fuse box lid.
3
4
1
2
Ty p e AType B
Ty p e C
Page 638 of 792

638
PRIUS PRIME_OM_OM47D13U_(U)
7-3. Do-it-yourself maintenance
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been repla ced, a bulb may
need replacement. ( P. 641)
● If the replaced fuse blows again, have the vehicle inspected by your Toyota
dealer.
■ If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness f rom damage.
■ When replacing light bulbs
Toyota recommends that you use genuine Toyota products designed for this
vehicle. Because certain bulbs are connected to circuits designed to prevent
overload, nongenuine parts or parts not designed for this vehic le may be
unusable.
WARNING
■ To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
● Never use a fuse of a higher amperage rating than that indicate d, or use
any other object in place of a fuse.
● Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
● Do not modify the fuses or fuse boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired b y your
Toyota dealer as soon as possible.
Page 778 of 792

778Alphabetical index
PRIUS PRIME_OM_OM47D13U_(U)
Front seats ............................... 295Adjustment ............................ 295
Cleaning................................ 567
Correct driving posture ........... 28
Head restraints ..................... 299
Seat heaters ......................... 522
Front side marker lights.......... 346 Light switch ........................... 346
Replacing light bulbs............. 646
Front turn signal lights ........... 344 Replacing light bulbs............. 646
Turn signal lever ................... 344
Fuel ........................................... 364 Capacity ................................ 718
Fuel gauge ............................ 204
Information ............................ 725
Refueling............................... 364
Type ...................................... 718
Warning light ......................... 662
Fuel consumption.... 226, 258, 264
Average fuel consumption .... 226
Current fuel consumption...... 264
Fuel filler door.......................... 364
Opener .................................. 366
Refueling............................... 364
When the fuel filler door cannot be opened............... 367
Fuses ........................................ 636
Garage door opener ................ 553
Glove box ................................. 528 Hands-free system
(for cellular phone)
*
Head restraints ........................ 299
Head-up display....................... 246
Headlights ................................ 346
Automatic High Beam system .......... ...................... 351
Headlight aim................ 639, 764
Light switch ........................... 346
Replacing light bulbs ............ 646
Heated steering wheel ............ 523
Heaters
Automatic air conditioning system.... 496, 507
Heated steering wheel .......... 523
Outside rear view mirrors ........................ 500, 511
Seat heaters ......................... 522
High coolant temperature warning light.......................... 662
High mounted stoplight Replacing.............................. 646
High-voltage components ........ 96
Hill-start assist control ........... 486
Hood ......................................... 583
Hooks Coat hooks ........................... 552
Grocery bag hook ................. 533
Retaining hooks (floor mat) .... 26
Horn .......................................... 302
HV mode ..................................... 85
G
H