tow TOYOTA PRIUS PLUG-IN HYBRID 2021 Workshop Manual

703
8When trouble arises
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8-1. Essential information
Emergency flashers ........... 704
If your vehicle has to
be stopped in an
emergency ....................... 705
If the vehicle is trapped in
rising water ...................... 706
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ...................... 707
If you think something is
wrong ............................... 713
If a warning light turns on
or a warning buzzer
sounds ............................. 714
If a warning message is
displayed ......................... 723
If you have a flat tire .......... 731
If the hybrid system will
not start............................ 749
If the electronic key does
not operate properly ........ 751
If the 12-volt battery is
discharged ....................... 755
If your vehicle
overheats ......................... 761
If the vehicle becomes
stuck ................................ 766

7078-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8
When trouble arises
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 any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer or commercial towing ser-
vice.
● There is a malfunction in the shift control system. (P. 376, 729)
● There is a malfunction in the immobilizer system. (P. 7 4 )
● There is a malfunction in the smart entry & start system. (P. 751)
● The 12-volt battery is discharged. (P. 755)
The following may indicate a problem with your hybrid transmission.
Contact any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer or commercial towing service before towing.
● 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 any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer 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

7088-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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 30 km/h (18 mph).
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

7098-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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. 670)
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. 512
Emergency towing procedure
1
2
3
4
5
6

7108-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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 any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer 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. 6 7 0 )
■ Towing eyelet installation hole on the rear of the vehicle
The hole is equipped for fastening the
vehicle while shipping. The towing eyelet
installed in this hole cannot be used for
towing another vehicle.
7

7118-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8
When trouble arises
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■ When towing the vehicle
■ While towing
● When towing using cables or chains, avoid sudden starts, etc. which place
excessive stress on the towing eyelets, cables or chains. The towing eye-
lets, cables or chains may become damaged, broken debris may hit peo-
ple, and cause serious damage.
● Do not turn the power switch off.
This may lead to an accident as the front wheels will be locked by the
parking lock.
■ Installing towing eyelets to the vehicle
● The towing eyelets are only for the vehicle equipped with them. Do not use
the towing eyelets for another vehicle, and do not use the towing eyelets
for this vehicle on another vehicle.
● Make sure that towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing.
Be sure to transport the vehicle with the
front wheels raised or with all four wheels
raised off the ground. If the vehicle is
towed with the front wheels contacting
the ground, the drivetrain and related
parts may be damaged or electricity gen-
erated by the operation of the motor may
cause a fire to occur depending on the
nature of the damage or malfunction.

7128-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
NOTICE
■Towing with a sling-type truck
■ To prevent damage to the vehicle when towing using a wheel-lift type
truck
When raising the vehicle, ensure adequate ground clearance for towing at
the opposite end of the raised vehicle. Without adequate clearance, the
vehicle could be damaged while being towed.
■ To prevent damage to the vehicle when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■ To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the suspension components.
Do not tow with a sling-type truck to pre-
vent body damage.

7588-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■When recharging or replacing the 12-volt battery
● In some cases, it may not be possible to unlock the doors using the smart
entry & start system when the 12-volt battery is discharged. Use the wire-
less remote control or the mechanical key to lock or unlock the doors.
● The hybrid system may not start on the first attempt after the 12-volt battery
has recharged but will start normally after the second attempt. This is not a
malfunction.
● It may be impossible to unlock the charging port lid or locking and unlocking
the charging connector immediately after the 12-volt battery is reconnected.
In this case, carry the electronic key on your person and operate the
charging port lid or charging connector lock switch again.
● The power switch mode is memorized by the vehicle. When the 12-volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged. Before disconnecting the 12-volt battery,
turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt bat-
tery discharged, be especially careful when reconnecting the 12-volt battery.
● If the 12-volt battery discharges while the shift position is in P, it may not be
possible to shift the shift position to other positions. In this case, the vehicle
cannot be towed without lifting both front wheels because the front wheels
will be locked. ( P. 707)
■ When replacing the 12-volt battery
● Use a 12-volt battery that conforms to European regulations.
● Use a 12-volt battery that the case size is same as the previous one (LN1),
20 hour rate capacity (20HR) is equi valent (45Ah) or greater, and perfor-
mance rating (CCA) is equivalent (295A) or greater.
• If the sizes differ, the 12-volt battery cannot be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the vehi-
cle is not used is a short time, the 12-volt battery may discharge and the
hybrid system may not be able to start.
● For details, consult any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.

7678-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8
When trouble arises
WARNING
■ When attempting to free a stuck vehicle
If you choose to push the vehicle back and forth to free it, make sure the
surrounding area is clear to avoid striking other vehicles, objects or people.
The vehicle may also lunge forward or lunge back suddenly as it becomes
free. Use extreme caution.
■ When changing the shift position
Be careful not to change the shift position with the accelerator pedal
depressed.
This may lead to unexpected rapid acceleration of the vehicle that may
cause an accident resulting in death or serious injury.
NOTICE
■ To avoid damage to the hybrid transmission and other components
● Avoid spinning the front wheels and depressing the accelerator pedal
more than necessary.
● If the vehicle remains stuck even after these procedures are performed,
the vehicle may require towing to be freed.

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