2022 TOYOTA PRIUS PLUG-IN HYBRID light

3725-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)Q
Enabling/disabling the pre-collision system
The pre-collision system can be enabled/disabled on (P. 247)
of the multi-information display.
The system is automatically enabled each time the power switch is
turned to ON mode.
If the system is disabled, the
PCS warning light will turn on
and a message will be dis-
played on the multi-information
display.
QChanging the pre-collision warning timing
The pre-collision warning timing can be changed on (P. 247)
of the multi-information display.
The warning timing setting is retained when the power switch is turned
off.
However, if the pre-collision system is disabled and re-enabled, the
operation timing will return to the default setting (middle).
Early
Middle
This is the default setting.
Late
Changing settings of the pre-collision system
1
2
3

3765-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)• When using an automatic car wash
• When driving through steam or smoke
• When driving near an object that reflects radio waves, such as a large
truck or guardrail
• When driving near a TV tower, broadcasting station, electric power plant,
or other location where strong radio waves or electrical noise may be
present
QSituations in which the system may not operate properly
OIn some situations such as the following, an object may not be detected by
the radar sensor and front camera, preventing the system from operating
properly:
• When a detectable object is approaching your vehicle
• When your vehicle or a detectable object is wobbling
• If a detectable object makes an abrupt maneuver (such as sudden swerv-
ing, acceleration or deceleration)
• When your vehicle approaches a detectable object rapidly
• When a detectable object is near a wall, fence, guardrail, manhole cover,
vehicle, steel plate on the road, etc.
• When a detectable object is under a structure
• When part of a detectable object is hidden by an object, such as large
baggage, an umbrella, or guardrail
• When multiple detectable objects are close together
• If the sun or other light is shining directly on a detectable object
• When a detectable object is a shade of white and looks extremely bright
• When a detectable object appears to be nearly the same color or bright-
ness as its surroundings
• If a detectable object cuts or suddenly emerges in front of your vehicle
• When the front of your vehicle is hit by water, snow, dust, etc. • When driving through or under
objects that may contact your vehicle,
such as thick grass, tree branches, or
a banner
• When a detectable object is not
directly in front of your vehicle

3775-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
5
Driving
• When a very bright light ahead, such as the sun or the headlights of
oncoming traffic, shines directly into the front camera
• When approaching the side or front of a vehicle ahead
• If a vehicle ahead is a motorcycle
• If a vehicle ahead is narrow, such as a personal mobility vehicle
• If a preceding vehicle has a small rear end, such as an unloaded truck
• If a vehicle ahead is carrying a load which protrudes past its rear bumper
• If a vehicle ahead is irregularly shaped, such as a tractor or side car
• If a vehicle ahead is a child sized bicycle, a bicycle that is carrying a large
load, a bicycle ridden by more than one person, or a uniquely shaped
bicycle (bicycle with a child seat, tandem bicycle, etc.)
• If a pedestrian/or the riding height of a bicyclist ahead is shorter than
approximately 1 m (3.2 ft.) or taller than approximately 2 m (6.5 ft.)
• If a pedestrian/bicyclist is wearing oversized clothing (a rain coat, long
skirt, etc.), making their silhouette obscure
• If a pedestrian is bending forward or squatting or bicyclist is bending for-
ward
• If a pedestrian/bicyclist is moving fast
• If a pedestrian is pushing a stroller, wheelchair, bicycle or other vehicle
• When driving in inclement weather such as heavy rain, fog, snow or a
sandstorm
• When driving through steam or smoke
• When the surrounding area is dim, such as at dawn or dusk, or while at
night or in a tunnel, making a detectable object appear to be nearly the
same color as its surroundings
• When driving in a place where the surrounding brightness changes sud-
denly, such as at the entrance or exit of a tunnel
• After the hybrid system has started the vehicle has not been driven for a
certain amount of time
• While making a left/right turn and for a few seconds after making a left/
right turn • If a preceding vehicle has a low rear
end, such as a low bed trailer
• If a vehicle ahead has extremely high
ground clearance

3785-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)• While driving on a curve and for a few seconds after driving on a curve
• If your vehicle is skidding
• If the wheels are misaligned
• If a wiper blade is blocking the front camera
• The vehicle is being driven at extremely high speeds
• When driving on a hill
• If the radar sensor or front camera is misaligned
OIn some situations such as the following, sufficient braking force may not be
obtained, preventing the system from performing properly:
• If the braking functions cannot operate to their full extent, such as when
the brake parts are extremely cold, extremely hot, or wet
• If the vehicle is not properly maintained (brakes or tires are excessively
worn, improper tire inflation pressure, etc.)
• When the vehicle is being driven on a gravel road or other slippery sur-
face
QIf VSC is disabled
OIf VSC is disabled (P. 511), the pre-collision brake assist and pre-collision
braking functions are also disabled.
OThe PCS warning light will turn on and “VSC Turned Off Pre-Collision Brake
System Unavailable” will be displayed on the multi-information display. • If the front of the vehicle is raised or
lowered

3795-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
5
Driving
LTA (Lane Tracing Assist)
While driving on a road with clear white (yellow) lane lines, the LTA
system warns the driver if the vehicle may deviate from the cur rent
lane or course*, and also can slightly operate the steering wheel to
help avoid deviation from the lane or course*. Also, while the dynamic
radar cruise control with full-speed range is operating, this s ystem will
operate the steering wheel to maintain the vehicle’s lane posit ion.
The LTA system recognizes white
(yellow) lane lines or a course*
using the front camera. Addition-
ally, it detects preceding vehicles
using the front camera and radar.
*: Boundary between asphalt and the
side of the road, such as grass, soil,
or a curb
Summary of functions

3805-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
WARNING
QBefore using LTA system
O Do not rely solely upon the LTA system. The LTA system does not auto-
matically drive the vehicle or reduce the amount of attention t hat must be
paid to the area in front of the vehicle. The driver must always assume full
responsibility for driving safely by paying careful attention t o the surround-
ing conditions and operating the steering wheel to correct the path of the
vehicle. Also, the driver must take adequate breaks when fatigu ed, such
as from driving for a long period of time.
O Failure to perform appropriate driving operations and pay careful attention
may lead to an accident, resulting in death or serious injury.
O When not using the LTA system, use the LTA switch to turn the system off.
Q Situations unsuitable for LTA system
In the following situations, use the LTA switch to turn the sys tem off. Failure
to do so may lead to an accident, resulting in death or serious injury.
O Vehicle is driven on a road surface which is slippery due to rainy weather,
fallen snow, freezing, etc.
O Vehicle is driven on a snow-covered road.
O White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.
O Vehicle is driven in a temporary lane or restricted lane due to construction
work.
O Vehicle is driven in a construction zone.
O A spare tire, tire chains, etc. are equipped.
O When the tires have been excessively worn, or when the tire inflation pres-
sure is low.
O During emergency towing.
Q Preventing LTA system malfunctions and operations performed by
mistake
O Do not modify the headlights or place stickers, etc. on the surface of the
lights.
O Do not modify the suspension etc. If the suspension etc. needs to be
replaced, contact any authorized Toyota retailer or Toyota auth orized
repairer, or any reliable repairer.
O Do not install or place anything on the hood or grille. Also, do not install a
grille guard (bull bars, kangaroo bar, etc.).
O If your windshield needs repairs, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.

3825-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
WARNING
OThere are shadows on the road that run parallel with, or cover, the white
(yellow) lines.
O The vehicle is driven in an area without white (yellow) lines, such as in
front of a tollgate or checkpoint, or at an intersection, etc.
O The white (yellow) lines are cracked, “Raised pavement marker” or stones
are present.
O The white (yellow) lines cannot be seen or are difficult to see due to sand,
etc.
O The vehicle is driven on a road surface that is wet due to rain, puddles,
etc.
O The traffic lines are yellow (which may be more difficult to recognize than
lines that are white).
O The white (yellow) lines cross over a curb, etc.
O The vehicle is driven on a bright surface, such as concrete.
O If the edge of the road is not clear or straight.
O The vehicle is driven on a surface that is bright due to reflected light, etc.
OVehicle is driven where the road
diverges, merges, etc.
O Repair marks of asphalt, white (yellow)
lines, etc. are present due to road
repair.

3835-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
5
Driving
WARNING
OThe vehicle is driven in an area where the brightness changes suddenly,
such as at the entrances and exits of tunnels, etc.
O Light from the headlights of an oncoming vehicle, the sun, etc. enters the
camera.
O The vehicle is driven on a slope.
O The vehicle is driven on a road which tilts left or right, or a winding road.
O The vehicle is driven on an unpaved or rough road.
O The traffic lane is excessively narrow or wide.
O The vehicle is extremely tilted due to carrying heavy luggage or having
improper tire pressure.
O The distance to the preceding vehicle is extremely short.
O The vehicle is moving up and down a large amount due to road conditions
during driving (poor roads or road seams).
O When driving in a tunnel or at night with the headlights off or when a head-
light is dim due to its lens being dirty or it being misaligned .
O The vehicle is struck by a crosswind.
O The vehicle is affected by wind from a vehicle driven in a nearby lane.
O The vehicle has just changed lanes or crossed an intersection.
O Tires which differ by structure, manufacturer, brand or tread pattern are
used.
O When tires of a size other than specified are installed.
O Snow tires, etc. are equipped.
O The vehicle is being driven at extremely high speeds.