TOYOTA PRIUS PRIME 2021 Owners Manual (in English)

PRIUS PRIME_OM_OM47D71U_(U)
6617-3. Do-it-yourself maintenance
7
Maintenance and care
WARNING
■Replacing light bulbs
●Be sure to stop the hybrid system and turn off the lights. Do not attempt to
replace the bulb immediately after turning off the lights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the light unit. This may
damage the back-up lights or cause condensation to build up on the lens.
●Do not attempt to repair or disassemble light bulbs, connectors, electric
circuits or component parts.
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030057005200030048004f0048004600570055004c00460003[shock.
●Do not replace the right-hand back-up light immediately after the vehicle
has been driven.
After the vehicle has been driven the exhaust pipe will be extremely hot,
and touching the exhaust pipe may result in burns.
●Use gloves and other protection to prevent injuries on vehicle parts.
There is the danger of being injured on the edges of parts.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installing to prevent heat damage.

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PRIUS PRIME_OM_OM47D71U_(U)
7-3. Do-it-yourself maintenance

663
PRIUS PRIME_OM_OM47D71U_(U)
8When trouble arises
8-1. Essential information
Emergency flashers .......... 664
If your vehicle has to
be stopped in an
emergency ...................... 665
If the vehicle is trapped
in rising water.................. 666
8-2. Steps to take in an
emergency
If your vehicle needs to
be towed ......................... 667
If you think something is
wrong .............................. 673
If a warning light turns on
or a warning buzzer
sounds ............................ 674
If a warning message is
displayed......................... 684
If you have a flat tire.......... 692
If the hybrid system will
not start ........................... 709
If the electronic key does
not operate properly ........ 711
If the 12-volt battery is
discharged ...................... 715
If your vehicle overheats ... 721
If the vehicle becomes
stuck ............................... 726

664
PRIUS PRIME_OM_OM47D71U_(U)
8-1. Essential information
Emergency flashers
Press the switch.
All the turn signal lights will flash. To turn them off, press the switch once
again.
■Emergency flashers
●If the emergency flashers are used for a long time while the hybrid system is
not operating (while the “READY” indicator is not illuminated), the 12-volt
battery may discharge.
●If any of the SRS airbags deploy (inflate) or in the event of a strong rear
impact, the emergency flashers will turn on automatically.
The emergency flashers will turn off automatically after operating for
approximately 20 minutes. To manually turn the emergency flashers off,
press the switch twice.
(The emergency flashers may not turn on automatically depending on the
force of the impact and conditions of the collision.)
The emergency flashers are used to warn other drivers when the
vehicle has to be stopped in the road due to a breakdown, etc.
Vehicles with 7-inch displayVehicles with 11.6-inch display

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PRIUS PRIME_OM_OM47D71U_(U)
8
When trouble arises
8-1. Essential information
If your vehicle has to be stopped in an
emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort
required to slow the vehicle.
Shift the shift position to N.
If the shift position is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the hybrid system.
If the shift position cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle
speed as much as possible.
To stop the hybrid system,
press and hold the power
switch for 2 consecutive sec-
onds or more, or press it briefly
3 times or more in succession.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop
the vehicle in the normal way, stop the vehicle using the follow-
ing procedure:
1
2
3
4
3
Press and hold for 2 seconds or
more, or press briefly 3 times or
more
Q
WARNING
■If the hybrid system has to be turned off while driving
Power assist for the steering wheel will be lost, making the steering wheel
heavier to turn. Decelerate as much as possible before turning off the hybrid
system.
5

666
PRIUS PRIME_OM_OM47D71U_(U)
8-1. Essential information
If the vehicle is trapped in rising water
●Remove the seat belt first.
●If the door can be opened, open the door and exit the vehicle.
●If the door can not be opened, open the window using the power
window switch and exit the vehicle through the window.
●If the window can not be opened using the power window switch,
remain calm, wait until the water level inside the vehicle rises to the
point that the water pressure inside of the vehicle equals the water
pressure outside of the vehicle, and then open the door and exit the
vehicle.
In the event the vehicle is submerged in water, remain calm and
perform the following.
WARNING
■Using an emergency hammer* for emergency escape
The rear side windows and rear window of this vehicle can be shattered by
an emergency hammer
* used for emergency escape, however, since the
windshield and front side windows are laminated glass they can not be
shattered by an emergency hammer
*.
*: Contact your Toyota dealer or aftermarket accessory manufacturer for fur-
ther information about an emergency hammer.
■Escaping the vehicle from the window
There are cases where escaping the vehicle from the window is not possi-
ble due to seating position, passenger body type, etc.
When using an emergency hammer, consider your seat location and the
size of the window opening to ensure that the opening is accessible and
large enough to escape.

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PRIUS PRIME_OM_OM47D71U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If your vehicle needs to be towed
In the following situations, it is not possible to be towed by another
vehicle using cables or chains, as the front wheels may be locked due
to the parking lock. Contact your Toyota dealer or commercial towing
service.
●There is a malfunction in the shift control system. (P. 342, 691)
●There is a malfunction in the immobilizer system. (P. 83)
●There is a malfunction in the smart key system. (P. 7 1 1 )
●The 12-volt battery is discharged. (P. 7 1 5 )
The following may indicate a problem with your hybrid transmission.
Contact your Toyota dealer or commercial towing service before tow-
ing.
●The hybrid system warning message is displayed and the vehicle
does not move.
●The vehicle makes an abnormal sound.
If towing is necessary, we recommend having your vehicle
towed by your Toyota dealer or commercial towing service,
using a wheel-lift type truck or flatbed truck.
Use a safety chain system for all towing, and abide by all state/
provincial and local laws.
Situations when it is not possible to be towed by another vehicle
Situations when it is necessary to contact dealers before towing

6688-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47D71U_(U)
When using a flatbed truck to transport the vehicle, use tire strapping
belts. Refer to the owner’s manual of the flatbed truck for the tire
strapping method.
In order to suppress vehicle movement during transportation, set the
parking brake and turn the power switch off.
If a tow truck is not available in an emergency, your vehicle may be
temporarily towed using cables or chains secured to the emergency
towing eyelets. This should only be attempted on hard surfaced roads
for short distances at under 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.
Towing with a wheel-lift type truck
From the front From the rear
Release the parking brake. Use a towing dolly under the
front wheels.
Using a flatbed truck
Emergency towing

6698-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47D71U_(U)
8
When trouble arises
To have your vehicle towed by another vehicle, the towing eyelet must
be installed to your vehicle. Install the towing eyelet using the follow-
ing procedure.
Take out the wheel nut wrench and towing eyelet. (P. 630)
Remove the eyelet cover using
a flathead screwdriver.
To protect the bodywork, place a
rag between the screwdriver and
the vehicle body as shown in the
illustration.
Insert the towing eyelet into the
hole and tighten partially by
hand.
Tighten down the towing eyelet
securely using a wheel nut
wrench or hard metal bar.
When tightening with a wheel nut
wrench or hard metal bar, make
sure not to damage the vehicle
body.
Securely attach cables or chains to the towing eyelet.
Take care not to damage the vehicle body.
Enter the vehicle being towed and start the hybrid system.
If the hybrid system does not start, turn the power switch to ON mode.
Turn off the Parking Support Brake function. (if equipped): P. 456
Emergency towing procedure
1
2
3
4
5
6

6708-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47D71U_(U)
Shift the shift position to N* and release the parking brake.
*: If the shift position cannot be changed or the current shift position can
not be confirmed, contact your Toyota dealer or commercial towing ser-
vice before towing.
■While towing
If the hybrid system is off, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
■Wheel nut wrench
Wheel nut wrench is installed in luggage compartment. (P. 630)
■Towing eyelet installation hole on the rear of the vehicle
The hole is equipped for fastening the
vehicle while shipping. Your vehicle can-
not tow another vehicle.
7