2020 TOYOTA PRIUS PLUG-IN HYBRID traction control

5856-1. Using the air conditioning system and defogger
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
6
Interior features
Remote Air Conditioning System
If the Remote Air Conditioning System is used while the charging
cable is connected to the vehicle, the reduction of charge in the hybrid
battery (traction battery) will be suppressed to allow you to use elec-
tricity from an external power source.
Charging will be conducted automatically after the Remote Air Condition-
ing System is stopped.
Check the temperature setting of the air conditioning system.
(P. 572)
The Remote Air Conditioning System will operate in accordance with the
temperature settings of the air conditioning system.
Press and hold “A/C” on the wire-
less remote control to operate the
Remote Air Conditioning System.
The system will shut off if a door is
opened.
The system can be stopped by
pressing “A/C” twice.
The Remote Air Conditioning System uses electrical energy
stored in the hybrid battery (traction battery) and allows the air
conditioning to be operated by remote control.
Before leaving the vehicle
Activating the Remote Air Conditioning System

6317-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
7
Maintenance and care
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
12-volt battery
condition
(P. 644)• Warm water • Baking soda • Grease
• Conventional wrench (for terminal clamp bolts)
• Distilled water
Engine/power
control unit
coolant level
(P. 641)• “Toyota Super Long Life Coolant” or a similar high
quality ethylene glycol-based non-silicate, non-
amine, non-nitrite and non-borate coolant with long-
life hybrid organic acid technology
“Toyota Super Long Life Coolant” is pre-mixed with
50% coolant and 50% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(P. 638)• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (P. 6 9 1 )• Fuse with same amperage rating as original
Hybrid battery
(traction battery)
air intake vent
(P. 623)
• Vacuum cleaner, etc.
• Flathead screwdriver
Light bulbs
(P. 695)
• Bulb with same number and wattage rating as origi-
nal
• Flathead screwdriver
• Wrench
Radiator and
condenser
(P. 643)

Tire inflation
pressure
(P. 665)• Tire pressure gauge
• Compressed air source
Washer fluid
(P. 648)• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)

7498-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8
When trouble arises
If the hybrid system will not start
One of the following may be the cause of the problem:
● The charging cable may be attached to the vehicle. (P. 165)
● The electronic key may not be functioning properly.* (P. 751)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 1 1 0 )
● There may be a malfunction in the immobilizer system.* (P. 7 4 )
● There may be a malfunction in the shift control system.*
( P. 376, 729)
● The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 750)
● There is a possibility that the temperature of the hybrid battery
(traction battery) is extremely low (approximately below -30 C
[-22 F]). (P. 110, 375)
*: It may not be possible to shift the shift position other than P.
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 755)
● The 12-volt battery terminal connections may be loose or corroded.
( P. 644)
Reasons for the hybrid system not starting vary depending on
the situation. Check the following and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 373)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

799Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Antenna
Smart entry & start system.... 293
Anti-lock brake system
(ABS) ...................................... 559
Function ................................ 559
Warning light ......................... 715
Approach warning ................... 461
Armrest ..................................... 613
Assist grips .............................. 614
Audio input
*
Audio system*
Automatic air conditioning
system .................................... 572
Air conditioning filter.............. 681
Automatic air conditioning
system ................................ 572
Blower customization ............ 576
Eco score (A/C score) ........... 254
Front seat concentrated
airflow mode (S-FLOW)...... 575
Humidity sensor .................... 584
Remote Air Conditioning
System................................ 585
Automatic headlight leveling
system .................................... 389
Automatic light control
system .................................... 388
AUX port
*
Auxiliary boxes ........................ 598
Back door ................................. 288
Back-up light ............................ 695
Replacing light bulbs ............. 696
Wattage................................. 779Battery (12-volt battery) .......... 644
Battery checking ................... 644
Exchanging ........................... 758
If the 12-volt battery is
discharged .......................... 755
Preparing and checking
before winter....................... 566
Replacing .............................. 758
Warning light ......................... 714
Battery (traction battery)......... 108
Air intake vent ....................... 109
Charging ............................... 121
Location ................................ 108
Specification ......................... 773
Status indicator ..................... 123
Blind Spot Monitor (BSM) ....... 473
Blind Spot Monitor function ... 489
Rear Crossing Traffic Alert
function ............................... 493
Bluetooth
®*
Bottle holders .......................... 597
Brake
Fluid ...................................... 778
Parking brake........................ 386
Regenerative braking............ 103
Warning light ......................... 714
Brake assist ............................. 559
Brake Override System ........... 360
Break-in tips ............................. 361
Brightness control
Instrument cluster light
control................................. 206
BSM (Blind Spot Monitor) ....... 473
Blind Spot Monitor function ... 489
Rear Crossing Traffic Alert
function ............................... 493
B
*: Refer to “Navigation system Owner’s manual”.

801Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Child-protectors ....................... 286
Cleaning............................ 616, 622
Aluminum wheels .................. 617
Exterior.................................. 616
Front camera......................... 408
Hybrid battery (traction
battery) air intake vent ........ 623
Interior ................................... 622
Radar sensor ........................ 407
Seat belts .............................. 625
Water-repellent coating ......... 617
Clock ......................................... 204
Adjustment ............................ 210
Coat hooks ............................... 613
Combination meter .................. 204
Clock adjustment .................. 210
Main display .......................... 222
Multi-information display ....... 230
Warning lights and
indicators ............................ 214
Condenser ................................ 643
Console box ............................. 595
Consumption screen ............... 275
Coolant ..................................... 641
Capacity ................................ 776
Checking ............................... 641
Preparing and checking
before winter....................... 566
Cooling system ........................ 641
Engine overheating ............... 761
Hybrid system overheating ... 763
Cruise control
Dynamic radar cruise control
with full-speed range .......... 451
Cup holders .............................. 596
Curtain shield airbags ............... 39
Customizable features ............ 782Daytime running light
system .................................... 388
Deck board ............................... 600
Defogger
Outside rear view mirrors...... 577
Rear window ......................... 577
Windshield ............................ 577
Dimension ................................ 770
Display
Drive information................... 232
Dynamic radar cruise control
with full-speed range .......... 451
Energy monitor ............. 233, 272
Head-up display .................... 264
LTA (Lane Tracing Assist) .... 438
Main display .......................... 222
Multi-information display ....... 230
Parking Support Brake
function ............................... 516
Pre-collision warning............. 419
RCTA detection screen......... 473
RSA (Road Sign Assist)........ 446
S-IPA (Simple Intelligent
Parking Assist System) ...... 527
Toyota parking assist
sensor................................. 500
Warning messages ............... 723
Do-it-yourself maintenance .... 631
Door courtesy lights................ 591
Location ................................ 591
Wattage ................................ 779D

802Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Doors ................................ 283, 288
Back door .............................. 288
Door glasses ......................... 352
Door lock ............................... 283
Open door warning buzzer.... 286
Open door warning light ........ 717
Outside rear view mirrors ...... 350
Rear door child-protectors .... 286
Side doors ............................. 283
Side windows ........................ 352
Double locking system.............. 86
Drive information ..................... 232
Drive-Start Control................... 360
Driver’s seat belt reminder
light ......................................... 717
Driving ...................................... 358
Break-in tips .......................... 361
Correct driving posture............ 32
Driving in the rain .................. 359
Driving mode select switch ... 468
Plug-in hybrid vehicle driving
tips ...................................... 115
Procedures............................ 358
Winter drive tips .................... 566
Dynamic radar cruise control
with full-speed range ............ 451
ECB (Electronically
Controlled Brake System) .... 559
Eco drive mode ........................ 468
Electric motor (traction
motor) ....................................... 94
Location .................................. 94
Specification.......................... 773Electric Power Steering
(EPS)....................................... 560
Function ................................ 560
Warning light ......................... 715
Electronic key .......................... 278
Battery-saving function ......... 295
If the electronic key does not
operate properly ................. 751
Replacing the battery ............ 688
Electronically Controlled
Brake System (ECB) ............. 559
Emergency, in case of
If a warning buzzer sounds ... 714
If a warning light turns on...... 714
If a warning message is
displayed ............................ 723
If the 12-volt battery is
discharged .......................... 755
If the electronic key does not
operate properly ................. 751
If the hybrid system will not
start .................................... 749
If the vehicle becomes
stuck ................................... 766
If the vehicle is trapped in
rising water ......................... 706
If you have a flat tire ............. 731
If you lose your keys ..... 279, 282
If you think something is
wrong.................................. 713
If your vehicle has to be
stopped in an emergency ... 705
If your vehicle needs to be
towed .................................. 707
If your vehicle overheats ....... 761
E

804Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Flat tire ...................................... 731
Floor mats .................................. 30
Fluid
Brake..................................... 778
Transmission......................... 777
Washer.................................. 648
Fog lights.................................. 397
Replacing light bulbs ............. 700
Switch ................................... 397
Follow me home system ......... 388
Footwell lights.......................... 591
Front doors............................... 283
Front fog lights ........................ 397
Replacing light bulbs ............. 700
Switch ................................... 397
Front passenger’s seat belt
reminder light ........................ 717
Front position lights ................ 387
Light switch ........................... 387
Replacing light bulbs ............. 700
Front seat concentrated
airflow mode (S-FLOW)......... 575
Front seats ............................... 339
Adjustment ............................ 339
Cleaning ................................ 622
Correct driving posture............ 32
Head restraints...................... 343
Seat heaters.......................... 589
Front turn signal lights............ 385
Replacing light bulbs ............. 700
Turn signal lever ................... 385
Fuel ........................................... 401
Capacity ................................ 772
Fuel gauge ............................ 222
Information ............................ 780
Refueling ............................... 401
Type ...................................... 772
Warning light ......................... 717
Fuel consumption ............ 244, 275
Average fuel consumption .... 244
Current fuel consumption ...... 275Fuel filler door.......................... 403
Opener .................................. 403
Refueling............................... 401
When the fuel filler door
cannot be opened............... 403
Fuses ........................................ 691
Glove box ................................. 595
Hands-free system (for
cellular phone)
*
Head restraints ........................ 343
Head-up display ....................... 264
Headlights ................................ 387
AHS (Adaptive High-beam
System) .............................. 391
Automatic headlight
leveling ............................... 389
Follow me home system ....... 388
Light switch ........................... 387
Replacing light bulbs............. 700
Heaters
Automatic air conditioning
system ................................ 572
Hybrid battery (traction
battery) ............................... 154
Outside rear view mirrors...... 577
Seat heaters ......................... 589
High coolant temperature
warning light .......................... 716
High mounted stoplight
Replacing .............................. 700
High-voltage components ...... 108
Hill-start assist control............ 559
Hood ......................................... 634
Hooks
Coat hooks............................ 613
Grocery bag hook ................. 601
Retaining hooks (floor mat)..... 30
F
G
H

805Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Horn .......................................... 346
HV mode ..................................... 95
Hybrid battery (traction
battery) ................................... 108
Air intake vent ....................... 109
Charging ............................... 121
Location ................................ 108
Specification.......................... 773
Status indicator ..................... 123
Hybrid battery (traction
battery) air intake vent .......... 109
Cleaning ................................ 623
Hybrid system ............................ 94
Brake Override System ......... 360
Consumption screen ..... 244, 275
Drive-Start Control ................ 360
Emergency shut off system... 109
Energy monitor.............. 233, 272
High voltage components ..... 108
Hybrid System Indicator ........ 236
If the hybrid system will not
start..................................... 749
Overheating .......................... 761
Plug-in hybrid system
precautions ......................... 108
Plug-in hybrid vehicle driving
tips ...................................... 115
Power switch ......................... 373
Regenerative braking ............ 103
Starting the hybrid system .... 373
Vehicle proximity notification
system ................................ 103
Hybrid System Indicator ......... 236
Hybrid transmission ................ 379Identification ............................ 771
Engine................................... 772
Vehicle .................................. 771
Ignition switch (power
switch) .................................... 373
Auto power off function ......... 375
Changing the power switch
modes................................. 375
If your vehicle has to be
stopped in an emergency ... 705
Starting the hybrid system .... 373
Illuminated entry system ........ 593
Immobilizer system ................... 74
Indicators ................................. 214
Initialization .............................. 792
Items to initialize ................... 792
Parking Support Brake
function ............................... 520
Power windows ..................... 353
S-IPA (Simple Intelligent
Parking Assist System) ...... 548
Tire pressure warning
system ................................ 652
Inside rear view mirror ............ 348
Instrument cluster light
control .................................... 206
Interior lights............................ 591
Switch ........................... 592, 593
Wattage ................................ 779
Intrusion sensor ........................ 90
ISOFIX lower anchorages ......... 70I
*: Refer to “Navigation system Owner’s manual”.