
PRIUS v_OM_OM47B12U_(U)
1974-3. Operating the lights and wipers
4
Driving
■The Automatic High Beam can be operated when
The power switch is in ON mode.
■Camera sensor detection information
●High beam may not be automatically turned off in the following situations:
• When oncoming vehicles suddenly appear from a curve
• When the vehicle is cut in front of by another
• When oncoming or preceding vehicles are hidden from sight due to
repeated curves, road dividers or roadside trees
• When oncoming vehicles appear from the faraway lane on wide road
• When oncoming or preceding vehicles have no lights
●High beam may be turned off if an oncoming vehicle that is using fog lights
without using the headlights is detected.
●House lights, street lights, red traffic signals, and illuminated billboards or
signs may cause the high beam to turn off.
●The following factors may affect the amount of time taken to turn high beam
on or off:
• The brightness of headlights, fog lights, and tail lights of oncoming and
preceding vehicles
• The movement and direction of oncoming and preceding vehicles
• When a oncoming or preceding vehicle only has operational lights on one
side
• When a oncoming or preceding vehicle is a two-wheeled vehicle
• The condition of the road (gradient, curve, condition of the road surface
etc.)
• The number of passengers and amount of luggage
●High beam may be turned on or off when unexpected by the driver.

198
PRIUS v_OM_OM47B12U_(U)
4-3. Operating the lights and wipers
●In the situations below, the system may not be able to correctly detect the
surrounding brightness levels, and may flash or expose nearby pedestrians
to the high beam. Therefore, you should consider turning the high beams on
or off manually rather than relying on the Automatic High Beam system.
• In bad weather (rain, snow, fog, sandstorms etc.)
• The windshield is obscured by fog, mist, ice, dirt etc.
• The windshield is cracked or damaged.
• The camera sensor is deformed or dirty.
• The camera sensor temperature is extremely high.
• Surrounding brightness levels are equal to those of headlights, tail lights
or fog lights.
• Vehicles ahead have headlights that are either switched off, dirty, are
changing color, or have are not aimed properly.
• When driving through an area of intermittently changing brightness and
darkness.
• When frequently and repeatedly driving ascending/descending roads, or
roads with rough, bumpy or uneven surfaces (such as stone-paved
roads, gravel tracks etc.).
• When frequently and repeatedly taking curves or driving on a winding
road.
• There is a highly reflective object ahead of the vehicle, such as a sign or
a mirror.
• The back of a vehicle ahead is highly reflective, such as a container on a
truck.
• The vehicle’s headlights are damaged or dirty.
• The vehicle is listing or tilting, due to a flat tire, a trailer being towed etc.
• The high beam and low beam are repeatedly being switched between in
an abnormal manner.
• The driver believes that the high beam may be causing problems or dis-
tress to other drivers or pedestrians nearby.
WARNING
■Limitations of the Automatic High Beam
Do not rely on the Automatic High Beam. Always drive safely, taking care to
observe your surroundings and turning high beam on or off manually if nec-
essary.

478
PRIUS v_OM_OM47B12U_(U)
7-3. Do-it-yourself maintenance
■Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by
your Toyota dealer.
●LED headlights
●Front side marker lights (LED headlights)
●Parking lights (LED headlights)
●Daytime running lights (LED headlights)
●Stop/tail lights
●Rear side marker lights
●High mounted stoplight
■LED lights
The LED headlights, front side marker lights, parking lights, daytime running
lights, stop lights, tail lights, rear side marker lights and high mounted stop-
light consist of a number of LEDs. If any of the LEDs burn out, take your vehi-
cle to your Toyota dealer to have the light replaced.
■Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not
indicate a malfunction. Contact your Toyota dealer for more information in the
following situations:
●Large drops of water have built up on the inside of the lens.
●Water has built up inside the headlight.
■When replacing light bulbs
P. 465

490
PRIUS v_OM_OM47B12U_(U)
8-2. Steps to take in an emergency
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light and warning buzzer (red
indicator)
*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released, the system is operating normally.
Brake system warning light (yellow indicator)
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
Have the vehicle inspected by your Toyota dealer
immediately.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(If equipped)
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(If equipped)
Hybrid system warning light (warning buzzer)
Indicates a malfunction in the hybrid system
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.

4918-2. Steps to take in an emergency
PRIUS v_OM_OM47B12U_(U)
8
When trouble arises
(U.S.A.)
(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system; or
• The electronic throttle control system
Have the vehicle inspected by your Toyota dealer
immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
Have the vehicle inspected by your Toyota dealer
immediately.
(U.S.A.)
(Canada)
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system
Have the vehicle inspected by your Toyota dealer
immediately.
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS system
Have the vehicle inspected by your Toyota dealer
immediately.
(Flashes)
(If equipped)
PCS warning light
Indicates a malfunction in the pre-collision system
Have the vehicle inspected by your Toyota dealer
immediately.
The warning light will operate as follows, even when the
system is not malfunctioning:
• The light will come on when the TRAC and VSC are
turned off. (P. 249)
• The light will come on when the pre-collision system is
turned off. (P. 254)
• The light will flash when the system cannot temporarily
be used.
Warning lightWarning light/Details/Actions

4928-2. Steps to take in an emergency
PRIUS v_OM_OM47B12U_(U)
Slip indicator light
Indicates a malfunction in:
• The VSC system;
• The TRAC system; or
• The hill-start assist control system
Have the vehicle inspected by your Toyota dealer
immediately.
The light will flash when the above systems and/or ABS
are operating.
(If equipped)
Parking lock system warning light (warning buzzer)
Indicates a malfunction in the shift control system
• In this situation, there is a possibility that the parking
lock mechanism will not work. When parking, park the
vehicle on a flat surface and apply the parking brake
securely.
• The power switch may not be turned off. If this happens,
applying the parking brake will enable the switch to be
turned off.
Have the vehicle inspected by your Toyota dealer
immediately.
(If equipped)
Parking lock system warning message (warning buzzer)
Indicates a malfunction in the shift control system when
the vehicle is stopped
• In this situation, there is a possibility that the parking
lock mechanism will not work. When parking, park the
vehicle on a flat surface and apply the parking brake
securely.
• The power switch may not be turned off. If this happens,
applying the parking brake will enable the switch to be
turned off.
Have the vehicle inspected by your Toyota dealer
immediately.
(If equipped)
LED headlight warning light
Indicates a malfunction in the LED headlights
The LED headlights will not normally illuminate when
there is a malfunction, however they may be able to illu-
minate depending on the nature of the problem.
Have the vehicle inspected by your Toyota dealer
immediately.
Warning lightWarning light/Details/Actions

4938-2. Steps to take in an emergency
PRIUS v_OM_OM47B12U_(U)
8
When trouble arises
(Flashes)
(If equipped)
P position request indicator light (warning buzzer)
The amount of charge remaining in the hybrid battery
(traction battery) has fallen because the shift position has
been left in N for a long time
Because recharging is not possible when the shift
position is in N, shift the shift position to P when
parking the vehicle for a long time.
• The driver’s door has been opened while the shift posi-
tion is in N, D or B
• An attempt has been made to start the hybrid system
while the shift position is in anything other than P
Shift the shift position to P.
(If equipped)
Hybrid system overheat warning light (warning buzzer)
The hybrid system has overheated
This light may come on when driving under severe operat-
ing conditions, and the output of the hybrid system may
temporarily decrease in order to protect the system. (For
example, when driving up a long steep hill or driving up a
steep hill in reverse.)
Stop and check. (P. 543)
(If equipped)
Cruise control indicator (yellow indicator)
Indicates a malfunction in the cruise control
Have the vehicle inspected by your Toyota dealer
immediately.
(Only outer frame
flashes)
(If equipped)
Low hybrid battery (traction battery) warning light
(warning buzzer)
Hybrid battery (traction battery) level becomes low
because the shift position is in N for long time
Because recharging is not possible when the shift
position is in N, shift the shift position to P when
parking the vehicle for a long time.
High coolant temperature warning light
Changes from a flashing to a solid light when the engine
coolant temperature increases
Immediately stop the vehicle in a safe place. (P. 543)
(If equipped)
Automatic headlight leveling system warning light
Indicates a malfunction in the automatic headlight leveling
system
Have the vehicle inspected by your Toyota dealer
immediately.
Open door warning light (warning buzzer)*2
Indicates that a door is not fully closed
Check that all the doors are closed.
Warning lightWarning light/Details/Actions

4948-2. Steps to take in an emergency
PRIUS v_OM_OM47B12U_(U)
Low fuel level warning light
Indicates that remaining fuel is approximately 1.6 gal.
(6.0 L, 1.3 Imp.gal.) or less
Refuel the vehicle.
Seat belt reminder light (warning buzzer)*3
Warns the driver and/or front passenger to fasten their
seat belts
Fasten the seat belt.
If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (warning buzzer) turn off.
(If equipped)
Master warning light
A buzzer sounds and the warning light comes on and
flashes to indicate that the master warning system has
detected a malfunction.
P. 503
(U. S. A)
(If equipped)
Maintenance required reminder light
Indicates that maintenance is required according to the
driven distance on the maintenance schedule.
*1
Illuminates for about 3 seconds and then flashes for about
15 seconds approximately 4500 miles (7200 km) after the
reminder light has been reset.
If necessary, perform maintenance.
Comes on and remains on if the distance driven exceeds
5000 miles (8000 km) after the reminder light has been
reset. (The indicator will not work properly unless the
reminder light has been reset.)
Perform the necessary maintenance. Please reset the
reminder light after the maintenance is performed.
(P. 414)
Warning lightWarning light/Details/Actions