2023 TOYOTA PRIUS PRIME Traffic Jam Assist

3515-5. Using the driving support systems
5
Driving
■Operating conditions of the
function
This function is operable when all of
the following conditions are met:
●The system detects lane lines and
the path of preceding or surround-
ing vehicles.
●The dynamic radar cruise control
and the lane tracing assist are
operating.
●The turn signal lever is not being
operated.
●The vehicle is not being driven
around a sharp curve.
●The vehicle is being driven in the
center of a lane.
●The driver monitor camera is
detecting that the driver is facing
front of the vehicle.
●The vehicle is driving in traffic jam
on a highway or expressway at
approximately 25 mph (40 km/h)
or less. (In some situations, such
as when a traffic jam starts, this
function may be operational at
approximately 20 mph (30 km/h)
or less.)
●It is necessary to enter a con-
nected services contract, provided
by Toyota, to use these functions.
For details, contact your Toyota
dealer.
●The driver’s door is closed.
●The driver’s seat belt is fastened.
●Customized setting of the Traffic
Jam Assist is not set to off.
●Functions and components com-
posing the system are in proper
condition.
●Customized setting of the PCS (Pre-Collision System) is not set
to off.
●Customized setting of the dynamic
radar cruise control (re-start time
extension) is not set to off.
■Temporary cancelation of the
function
●When the operating conditions are
no longer met, a function may be
temporarily canceled. However,
when the operation conditions are
met again, operation of the func-
tion will automatically be restored.
●If the operating conditions of a
function are no longer met while
the function is operating, a buzzer
may sound with a display to indi-
cate that the function has been
temporarily canceled. If no driver’s
responses to the
indication are
detected, the driver emergency
stop assist function may operate.
For types of display and action to
be taken, see the page mentioned
below. ( P.352)
■Driving operations during con-
trolled driving:
●Accelerator pedal
As with normal driving, acceleration
can be performed by depressing the
accelerator pedal. When the accel-
erator pedal is depressed at approx-
imately 10 km/h (6 mph) or more,
this function will be canceled.
●Brake pedal
As with normal driving, deceleration
can be performed by depressing the
brake pedal. However, controlled
driving will be cancelled.
●Steering wheel
As with normal driving, the steering
wheel can be operated. If the steer-
ing wheel is operated more than a
certain amount, controlled driving
will be cancelled.
WARNING
■Front camera installation area
on the windshield
 P.288

3525-5. Using the driving support systems
■When a warning message is
displayed
●“Traffic Jam Asst System Malfunc-
tion Visit Your Dealer”
The Traffic Jam Assist function may
not be operating properly.
●“Traffic Jam Asst Unavailable
Stop Assist Activated”
The system temporarily cannot be
used as the driver emergency stop
assist function has operated.
 The setting of Traffic Jam
Assist can be enabled/dis-
abled through a customize
setting. ( P.628)
 The setting of driver monitor
camera recording can be
enabled/disabled through a
customize setting. ( P.628)
The following displays indicate the operating status of the Traffic
Jam Assist function:
Changing Traffic Jam
Assist settings
Display and system operation
DisplayStatusAction to be taken
Traffic Jam Assist function is operating
Gray
Traffic Jam Assist function is about to end
Hold the
steering
wheel.
Orange
Traffic Jam Assist function has ended
Hold the
steering
wheel.
Red
Operation of either or both of dynamic radar
cruise control/LTA ( Lane Tracing Assist)
ended
Manually
operate the
steering
wheel imme-
diately.

5728-2. Steps to take in an emergency
●LDA (Lane Departure Alert)
●LTA (Lane Tracing Assist)
● LCA (Lane Change Assist) (if
equipped)
●AHB (Automatic High Beam)
●Dynamic radar cruise control
●PDA (Proactive Driving Assist)
Follow the following correction
methods.
• Check if there is any foreign mat- ter attached to the radar sensor or
radar sensor cover and clean
them if necessary ( P.286)
• The radar sensor may be mis-
aligned and will be adjusted auto-
matically while driving. Continue
driving for a while.
■If “Unavailable Activation Con-
dition not Satisfied See Owner’s
Manual” is displayed
The LCA function cannot be
used as the operating conditions
have not been met.
Operate the turn signal lever again
after all of the op erating conditions
are met.
■If “Cruise Control Unavailable
See Owner’s Manual” is dis-
played
Indicates one of the following sys-
tems is disabled.
●Dynamic radar cruise control
●Cruise control
A message is displayed when the
driving assist switch is pushed
repeatedly.
Press the driving assist switch
quickly and firmly.
■If “Driver Monitor Out of Tem-
perature Range Wait until Nor-
mal Temperature” is displayed
Indicates one of the following sys-
tems is disabled.
●Driver monitor (if equipped)
●Traffic Jam Assist (if equipped)
The temperature of the driver moni-
tor camera is outside of the operat-
ing range. Wait for the temperature
to become appropriate.
■If “Driver Monitor Unavailable
See Owner’s Manual” is dis-
played
The lens of the driver monitor cam-
era may be dirty.
When there is dirt on the camera
lens, clean it with a dry, soft cloth so
as to not damage it.
■If “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level may be low.
Check the level of the engine oil,
and add engine oil if necessary.
(  P.506) This message may be
displayed if the vehicle is stopped
on a slope. Move the vehicle to a
level surface and check if the mes-
sage disappears.
■If “Maintenance Required
Soon” is shown
Indicates that all maintenance
according to the driven distance on
the maintenance schedule
* should
be performed soon.
Comes on approximately 4500
miles (7200 km) after the message
has been reset.
If necessary, perform maintenance.
Please reset the message after the
maintenance is performed.
(  P.495)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your
vehicle.
■If “Maintenance Required Visit
Your Dealer” is shown
Indicates that all maintenance is
required to correspond to the driven

6289-2. Customization
■Road Sign Assist*1 ( P.329)
*1: If equipped
*2: This setting changes in ac cordance with My Settings.
■Dynamic Radar Cruise Control ( P.331)
*: This setting changes in accordance with My Settings.
■Traffic Jam Assist*1 ( P.348)
*1: If equipped
*2: This setting changes in ac cordance with My Settings.
FunctionCustomized setting
Road Sign Assist*2ON/OFFO
Excess speed notification
method
*2None/Visual/Visual & AudibleO
Other notifications
method
*2None/Visual/Visual & AudibleO
Excess speed notification
level
*25 mph (10 km/h) / 3 mph (5 km/h)
/ 1 mph (2 km/h)O
FunctionCustomized setting
Extended Resume Time*ON/OFFO
Acceleration setting*High/Mid/LowO
Guide message*ON/OFFO
Curve speed reduction*High/Mid/Low/OFFO
FunctionCustomized setting
Traffic Jam Assist*2ON/OFFO
Driver Monitor Camera
Recording
*2ON/OFFO
ABC
ABC
ABC

Alphabetical Index659
Door lock linked window opera-tion ..................................... 228
Jam protection function ........ 227
Operation ............................. 227
Window lock switch .............. 229
P position switch .................... 257
Pre-Collision System (PCS) Function ............................... 293
Warning light ........................ 558
Predictive efficient drive .......... 81
R
Radar cruise control Dynamic radar cruise control 331
Radiator ................................... 508
RCD (Rear Camera Detection) ............................................... 378Function ............................... 378
RCTA (Rear Cross Traffic Alert) ............................................... 373
RCTA Function ............................... 373
Rear Cross Traffic Alert (RCTA) ............................................... 373
Rear doors .............................. 185 Opener switch ...................... 188
Rear door child-protector lock........................................... 189
Rear seat reminder function . 188
Rear passengers’ seat belt reminder light ....................... 562
Rear seats ............................... 210 Folding down the rear seatbacks........................................... 210
Head restraints ..................... 212
Rear seat reminder function . 188
Seat heaters ......................... 443
Rear side marker lights ......... 269 Replacing exterior lights ....... 543
Switch................................... 269
Rear turn signal lights ........... 262 Replacing exterior lights ....... 543 Turn signal lever ...................262
Rear view mirror Digital Rear-view Mirror ........217
Inside rear view mirror ..........216
Outside rear view mirrors .....225
Rear window defogger ...........436
Refueling ............ .....................279
Capacity ...............................601
Fuel types .....................601, 607
Opening the fuel tank cap ....280
Regeneration Boost ...............260
Regenerative braking ...............78 Regeneration Boost..............260
Replacing Electronic key battery ...........538
Exterior lights........................543
Fuses....................................540
Tires .....................................526
Wireless remote control battery...........................................538
Replacing the tire ...................526
Reporting safety defects for Canadian owners ..................637
Reporting safety defects for U.S. owners ...................................636
Resetting the message indicat- ing maintenance is required 495
Road accident cautions ...........85
Road Sign Assist ....................329
RSA (Road Sign Assist) .........329
S
Safe Exit Assist.. .....................359
Safety Connect .........................65
Seat belt reminder light..........562
Seat belts...................................31 Adjusting the seat belt shoulder anchor height........................33
Automatic Locking Retractor ..33
Child restraint system installation .............................................55
Cleaning and maintaining the

662Alphabetical Index
Tire pressure warning system............................................... 516Function ............................... 516
Installing tire pressure warning valves and transmitters ...... 518
Registering ID codes ............ 522
Registration of the position of each wheel ......................... 518
Selecting wheel set .............. 524
Setting the tire pressure ....... 520
Warning light ........................ 561
Tires ......................................... 513 Chains .................................. 431
Checking .............................. 513
Emergency tire puncture repair kit........................................ 574
Glossary ............................... 613
If you have a flat tire ............. 574
Inflation pressure.................. 532
Information ........................... 609
Replacing ..................... 526, 574
Rotating tires ........................ 515
Size ...................................... 605
Snow tires ............................ 429
Tire identification number ..... 610
Tire inflation pressure display function............................... 516
Tire pressure warning system ........................................... 516
Uniform Tire Qu ality Grading 611
Warning light ........................ 561
Tonneau cover (luggage cover) ............................................... 455
Tools .............. .................. 527, 575
Top tether strap ... ..................... 62
Total load capacity (vehicle capacity weight) ........... 246, 249
Towing Dinghy towing....................... 250
Emergency towing................ 551
Towing eyelet ............... 552, 575
Trailer towing........................ 250 Toyota Safety Sense 3.0 ........284
Automatic High Be am ...........272
Driver monitor .......................292
Dynamic radar cruise control 331
Emergency Driving Stop System ...........................................345
FCTA (Front Cross Traffic Alert) ...........................................326
LCA (Lane Change Assist) ...310
LDA (Lane Departure Alert) ..313
LTA (Lane Tracing Assist) ....305
PCS (Pre-Collisio n System) .293
PDA (Proactive Driving Assist) ...........................................320
RSA (Road Sign Assist) .......329
Traffic Jam Assist .................348
Toyota Teammate Advanced Park ........................................395
TRAC (Traction Control) ........424
Traction battery (hybrid battery) .................................................83Charging .................................94
Location ..................................83
Specification .........................602
Warning messages .................87
Traction Control (TRAC) ........424
Traction motor (electric motor)72
Trailer towing ..........................250
Transmission ..........................256
Trip meters ..............................155
Turn signal lights....................262 Replacing exterior lights .......543
Turn signal lever ...................262
U
USB Type-C charging ports...457
V
Vanity lights ............................456
Vanity mirrors .........................456
Vehicle data recordings .............7