2010 TOYOTA PRIUS warning light

129
1-8. Safety information
1
Before driving
PRIUS_U (OM47668U) U.S.A.
■
There is a malfunction in the system
*1: The system judges a person of adult size as an adult. When a
smaller adult sits in the front pa ssenger seat, the system may rec-
ognize him/her as a child depending on his/her physique and pos-
ture.
*2: In the event the front passenge r does not wear a seat belt.
*3: When a large child who has outgrown a child restraint system sits
in the front passenger seat, the system may recognize him/her as
an adult depending on his/her physique or posture.
*4: Never install a rear-facing child restraint system on the front pas- senger seat. A forward-facing chil d restraint system should only
be installed on the front passenger seat when it is unavoidable.
(  P. 132)
*5: In case the indicator is not illumin ated, consult this manual as for
installing the child restraint system properly. ( P. 137)
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG
OFF”
SRS warning light On
Front passenger’s seat belt reminder light Off
Devices Front passenger airbag
Deactivated
Side airbag on the front passenger seat
Activated
Curtain shield airbag in the front
passenger side
Front passenger’s seat belt pretensioner

131
1-8. Safety information
1
Before driving
PRIUS_U (OM47668U) U.S.A.
CAUTION
■
Front passenger occupant cl assification system precautions
● If an adult sits in the front passenger seat, the “AIR BAG ON” indicator
light is illuminated. If the “AIR BAG OFF” indicator light is illuminated, ask
the passenger to sit up straight, well back in the seat, feet on the floor, and
with the seat belt worn correctly. If the “AIR BAG OFF” indicator light still
remain illuminated, either ask the passenger to move to the rear seat, or if
that is not possible, move the front passenger seat fully rearward.
● When it is unavoidable to install the forward-facing child restraint system
on the front passenger seat, install the child restraint system on the front
passenger seat in the proper order. ( P. 137)
● Do not modify or remove the front seats.
● Do not kick the front passenger seat or subject it to severe impact. Other-
wise, the SRS warning light may come on to indicate a malfunction on the
detection system. In this case, contact your Toyota dealer immediately.
● Child restraint systems installed on the rear seat should not contact the
front seatbacks.
● Do not use a seat accessory, such as a cushion or seat cover, that covers
the seat cushion surface.
● Do not modify or replace the upholstery of the front seat.

When driving2
149
PRIUS_U (OM47668U) U.S.A.
2-1. Driving proceduresDriving the vehicle............ 150
Power (ignition) switch ..... 162
EV-Drive Mode................. 168
Transmission.................... 171
Turn signal lever .............. 178
Parking brake ................... 179
Horn ................................. 180
2-2. Instrument cluster Gauges and meters ......... 181
Indicators and warning 
lights .............................. 185
Multi-information  display............................ 188 2-3. Operating the lights and
windshield wipers
Headlight switch ............... 206
Fog light switch ................ 209
Windshield wipers 
and washer .................... 210
Rear window wiper  and washer .................... 212
Headlight 
cleaner switch ................ 213
2-4. Using other driving systems Cruise control ................... 214
Dynamic radar 
cruise control ................. 218
Rear view monitor 
system ........................... 231
LKA (Lane-Keeping 
Assist) ............................ 235
Hill-start assist control ...... 243
Driving assist systems ..... 245
Pre-Collision System........ 249
2-5. Driving information Cargo and luggage .......... 255
Vehicle load limits ............ 260
Winter driving tips ............ 261
Trailer towing ................... 266
Dinghy towing .................. 267

153
2-1. Driving procedures
2
When driving
PRIUS_U (OM47668U) U.S.A.
■
Environmentally friendly driving
Environmentally friendly driving can be ac hieved by driving with the Hybrid
System Indicator. ( P. 192)
■ Brake actuator
The brake actuator uses brake fluid pressurized by the pump to power-assist
the brakes. If the brake actuator fails during driving, the brake system warn-
ing light comes on and the buzzer sounds continuously. In this case, the
brakes may not work properly. If they do not work well, depress the brake
pedal firmly. If the brake system warning light comes on, immediately stop
your vehicle and contact your Toyota dealer.
In the following conditions, you may hear a sound in the engine compart-
ment. This is not a malfunction.
● The driver’s door is opened with the hybrid system turned off.
● The brake pedal is depressed with the hybrid system turned off.
● After the hybrid system is turned on.
● The brake pedal is depressed repeatedly with the hybrid system turned
on.
● After the hybrid system is turned off.
The brake pedal may be hard to depress or the brake pedal stroke may be
short before turning the hybrid system on. This is not a malfunction.
■ When braking the vehicle
When applying brakes, you may hear a sound coming from the motor gener-
ator.
However, this does not indicate any trouble.

185
2-2. Instrument cluster
2
When driving
PRIUS_U (OM47668U) U.S.A.
Indicators and warning lights
The indicator and warning lights on the instrument cluster and
instrument panel inform the driver of the status of the vehicle’s vari-
ous systems.
Instrument cluster
Instrument panel
ITO22P103

187
2-2. Instrument cluster
2
When driving
PRIUS_U (OM47668U) U.S.A.
CAUTION
■
If a safety system warning light does not come on
Should a safety system light such as the ABS and the SRS airbag warning
lights not come on when you start the hybrid system, this could mean that
these systems are not available to help protect you in an accident, which
could result in death or serious injury. Have the vehicle inspected by your
Toyota dealer immediately if this occurs.
■ Warning lights
Warning lights inform the driver of malfunctions in the indicated
vehicle’s systems. ( P. 496)
*: These lights turn on when the “POWER” switch is turned to ON mode
to indicate that a system check is being performed. They will turn off
after the hybrid system is started, or after a few seconds. There may
be a malfunction in a system if the lights do not come on, or if the
lights do not turn off. Have the vehicle inspected by your Toyota
dealer.
(U.S.A.)(Canada)(U.S.A.)(Canada) redyellow
(if equipped)(U.S.A.)(Canada)
(if equipped)
******
******
**

226 2-4. Using other driving systems
PRIUS_U (OM47668U) U.S.A.
■Automatic cancelation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following sit-
uations:
● Actual vehicle speed is more than approximately 10 mph (16 km/h)
below the set vehicle speed. 
At this time, the memorized set speed is not retained.
● Vehicle speed falls below 25 mph (40 km/h).
● Enhanced VSC is activated.
■ Vehicle-to-vehicle distance settings
Select a distance from the table below. Note that the distances shown corre-
spond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance with vehicle speed.
■ Radar sensor and grille cover
■ Warning lights, messages and buzze rs for dynamic radar cruise con-
trol
Warning lights, messages and buzzers are used to indicate a system mal-
function or to inform the driver of the need for caution while driving. 
( P. 508)
Distance optionsVehicle-to-vehicle distance
Long Approximately 160 ft. (50 m)
Medium Approximately 130 ft. (40 m)
Short Approximately 100 ft. (30 m)
Always keep the sensor and grille cover
clean to ensure that the vehicle-to-vehi-
cle distance control operates properly.
(Some obstructions, such as snow, ice
and plastic objects, cannot be detected
by the obstruction sensor.)
Dynamic radar cruise control is can-
celed if an obstruction is detected.
ITO24P130

235
2-4. Using other driving systems
2
When driving
PRIUS_U (OM47668U) U.S.A.
LKA (Lane-Keeping Assist)
: If equipped
While driving on a freeway or motor highway that has lane markings,
this system recognizes the lanes using a camera as a sensor to
assist the driver with staying in the lane. The LKA system has two
functions.
■ Lane departure warning function
If the system judges that the vehicle may deviate from its lane, it
alerts the driver using rapid be eping, indications on the multi-
information display, and a sensory warning
* given via the steer-
ing wheel.
*: A slight steering torque is applied for a short period of time in
the direction of the center of the lane.
■ Lane keeping assist function
This function will be active when the vehicle-to-vehicle distance
control mode of the cruise control ( P. 218) is set with vehicle
speed above approx. 50 mph (approx. 75 km/h) and while the
lane departure warning function is active. When the lane keep-
ing assist function is active, a slight steering torque will be
applied, to help the driver mainta in the vehicle inside the lane.