2021 TOYOTA PRIUS door lock

510
PRIUS_OM_OM47E09U_(U)
6-2. Maintenance
Vehicle exterior
ItemsCheck points
Doors• Do the doors operate smoothly?
Engine hood• Does the engine hood lock system work prop-erly?
Fluid leaks• There should not be any signs of fluid leakageafter the vehicle has been parked.
Tires
• Is the tire inflati on pressure correct?
• The tires should not be damaged or exces- sively worn.
• Have the tires been rotated according to the
maintenance schedule?
• The wheel nuts should not be loose.
Windshield wipers/
rear window wiper
(if equipped)
• The wiper blades should not show any signs
of cracking, splitting, wear, contamination or
deformation.
• The wiper blades should clear the windshield/
rear window without streaking or skipping.
WARNING
■If the hybrid system is operating
Turn the hybrid system off and ensure that there is adequate ve ntilation
before performing maintenance checks.

PRIUS_OM_OM47E09U_(U)
5256-3. Do-it-yourself maintenance
6
Maintenance and care
■When opening the cover of the positive (+) battery terminal
■ Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, observe the following precautio ns before
recharging:
● If recharging with the 12-volt battery installed on the vehicle , be sure to dis-
connect the ground cable.
● Make sure the power switch on the charger is off when connectin g and dis-
connecting the charger cables to the 12-volt battery.
■ After recharging/reconnecting the 12-volt battery
●Unlocking the doors using the smart key system may not be possi ble imme-
diately after reconnecting the 12-volt battery. If this happens, use the wire-
less remote control or the mechanical key to lock/unlock the do ors.
● Start the hybrid system with the power switch in ACCESSORY mode . The
hybrid system may not start with the power switch turned off. However, the
hybrid system will operate normally from the second attempt.
● The power switch mode is recorded by the vehicle. If the 12-vol t battery is
reconnected, the vehicle will return the power switch mode to t he status it
was in before the 12-volt battery was disconnected. Make sure t o turn off
the power before disconnect the 12-volt battery. Take extra car e when con-
necting the 12-volt battery if the power switch mode prior to d ischarge is
unknown.
If the system will not start even after multiple attempts at al l methods above,
contact your Toyota dealer. While pushing the portion shown in the
illustration from both sides, lift the end of
the cover up.

6057-2. Steps to take in an emergency
PRIUS_OM_OM47E09U_(U)
7
When trouble arises
■Warning messages
The warning messages explained below may differ from the actual messages
according to operation conditions and vehicle specifications.
■ System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along wit h a message
or image shown on the multi-information display.
● “Antilock Brake System Malfunction Visit Your Dealer”:
The ABS warning light comes on. ( P. 593)
● “Braking Power Low Visit Your Dealer”:
The brake system warning light (yellow) will come on. ( P. 592)
● Indicates that a door is not fully closed while the vehicle is stopped.:
The Open door warning light comes on. ( P. 594)
■ If “Visit Your Dealer” is shown
The system or part shown on the multi-information display is malfunctioning.
Have the vehicle inspected by your Toyota dealer.
■ If a message about an operation is shown
● If a message about an operation of the accelerator pedal or bra ke pedal is
shown
• A warning message about an operation of the brake pedal may be shown
while the driving assist systems such as PCS (Pre-Collision System) (if
equipped) or the dynamic radar cruise control with full-speed r ange (if
equipped) is operating. If a warning message is shown, be sure to decel-
erate the vehicle or follow an instruction shown on the multi-i nformation
display.
• A warning message is shown when Brake Override System operates .
(  P. 229, 608)
• A warning message is shown when Drive-Start Control or Parking Sup-
port Brake function (if equipped) operates ( P. 230, 379). Follow the
instructions on the multi-information display.
● If a message about an operation of the power switch is shown
An instruction for operation of the power switch is shown when the incorrect
procedure for starting the hybrid system is performed or the power switch is
operated incorrectly. Follow the instructions shown on the mult i-information
display to operate the power switch again.
● If a message about a shift operation is shown
To prevent the shift position from being selected incorrectly o r the vehicle
from moving unexpectedly, the shift position may be changed aut omatically
( P. 257) or shift operation may be required. In this case, chang e the shift
position following the instructions on the multi-information display.
● If a message or image about an open/close state of a part or replenishment
of a consumable is shown
Confirm the part indicated by the multi-information display or a warning light,
and then perform the coping method such as closing the open doo r or
replenishing a consumable.

647
PRIUS_OM_OM47E09U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If the electronic key does not operate
properly
Use the mechanical key (P. 181) in order to perform the following
operations:
Locks all the doors
Closes the windows and moon
roof
*1 (turn and hold)*2
Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 3 seconds
unlocks the other doors.
Opens the windows and moon roof*1 (turn and hold)*2
*1: If equipped
*2: This setting must be customized at your Toyota dealer. ( P. 690)
If communication between the electronic key and vehicle is
interrupted ( P. 198) or the electronic key cannot be used
because the battery is depleted, the smart key system and
wireless remote control can not be used. In such cases, the
doors can be opened and the hybrid system can be started by
following the procedure below.
Locking and unlocking the doors
1
2
3
4

6537-2. Steps to take in an emergency
PRIUS_OM_OM47E09U_(U)
7
When trouble arises
■When recharging or replacing the 12-volt battery
●In some cases, it may not be possible to unlock the doors using the smart
key 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.
● 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 thi s case, the vehicle
cannot be towed without lifting both front wheels because the f ront wheels
will be locked. ( P. 584)
■ 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 previou s one (LN1),
20 hour rate capacity (20HR) is equivalent (45Ah) or greater, and perfor-
mance rating (CCA) is equivalent (295A) or greater.
• If the sizes differ, the 12-volt battery cannot be properly se cured.
• If the 20 hour rate capacity is low, even if the time period w here 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 your Toyota dealer.

PRIUS_OM_OM47E09U_(U)
6938-2. Customization
8
Vehicle specifications
■HUD (Head-up display)* ( P. 1 5 8 )
*: If equipped
■
Door lock ( P. 185, 647)
■Smart key system and wireless remote control ( P. 186, 196)
FunctionDefault
settingCustomized setting
Route guidance*OnOffO––
123
FunctionDefault settingCustomized setting
Automatic door lockingShift position linkedSpeed linked–OOOff
Automatic door unlockingShift position linkedDriver’s door linked
–OO
Off
Unlocking using a mechanical
key
Driver’s door unlocked in
first step, all
doors
unlocked in
second step
All doors
unlocked in first step
––O
123
FunctionDefault settingCustomized setting
Operation signal (buzzer) 5Off
–OO
1 to 7
Operation signal (emergency
flashers) On
Off – O O
Time elapsed before the auto-
matic door lock function is
activated if a door is not
opened after being unlocked
60 seconds
Off
–OO30 seconds
120 seconds
Open door reminder buzzer
(when locking the vehicle)OnOff––O
123

694
PRIUS_OM_OM47E09U_(U)
8-2. Customization
■Smart key system (P. 1 9 6 )
*: This function can also be changed using the wireless remote control.
(P. 189)
■
Wireless remote control ( P. 1 8 6 )
FunctionDefault
settingCustomized setting
Smart key systemOnOff––O
Smart door unlocking*Driver’s doorAll the doors–OO
Time elapsed before unlock-
ing all the door when gripping
and holding the driver’s door
handle
2 secondsOff––O
Number of consecutive door
lock operations2 timesAs many as desired––O
123
FunctionDefault settingCustomized setting
Unlocking operation
Driver’s door unlocked in
first step, all doors
unlocked in
second step
All doors
unlocked in
first step
–OO
Wireless remote control On Off – – O
Locking operation when door
opened On Off – O O
123

PRIUS_OM_OM47E09U_(U)
6998-2. Customization
8
Vehicle specifications
■Illumination (P. 4 5 8 )
*: If equipped
■
Seat belt reminder ( P. 597)
■Maintenance system
FunctionDefault
settingCustomized setting
Time elapsed before the inte-
rior lights turn off 15 secondsOff
–OO
7.5 seconds
30 seconds
Operation after the power
switch is turned offOnOff––O
Operation when the doors are
unlockedOnOff––O
Operation when you approach
the vehicle with the electronic
key on your person
OnOff––O
Footwell lighting*OnOff––O
Interior lights illumination con-
trolOnOff––O
123
FunctionDefault settingCustomized setting
Vehicle speed linked seat belt
reminder buzzerOnOff––O
123
Oil Maintenance
(U.S.A. only)Resetting the message indicating maintenance
is required: P. 506
Tire pressure warning
systemInitializing the tire p ressure warning system:
 P. 534