2010 TOYOTA PRIUS steering wheel

246 2-4. Using other driving systems
PRIUS_U (OM47668U) U.S.A.
When the Enhanced VSC/TRAC is operatingIf the vehicle is in danger of slip-
ping or if the front wheels spin,
the slip indicator light flashes to
indicate that the Enhanced VSC/
TRAC have been engaged.
A buzzer (intermittent) sounds to
indicate that Enhanced VSC is
operating.
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■Sounds and vibrations caused by the ABS, brake assist, TRAC and
Enhanced VSC
● A sound may be heard from the engine compartment when the hybrid
system is started, just after the vehicle begins to move, if the brake pedal
is depressed forcefully or repeatedly, or 1 - 2 minutes after the hybrid
system is stopped. This sound does not indicate that a malfunction has
occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■ EPS operation sound
When the steering wheel operates, a mo tor sound (whirring sound) may be
heard. 
This does not indicate a malfunction.

247
2-4. Using other
driving systems
2
When driving
PRIUS_U (OM47668U) U.S.A.
■Reduced effectiveness of EPS
The effectiveness of EPS is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The
steering wheel may feel heavy as a result. Should this occur, refrain from
excessive steering input or stop the vehicle and turn the hybrid system off.
The system should return to normal within 10 minutes.
CAUTION
■The ABS does not opera te effectively when
● The limits of tire gripping performance have been exceeded.
● The vehicle hydroplanes while driving at high speed on the wet or slick
road.
■ Stopping distance when the ABS is ope rating on the wet or slick roads
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you in the following situ-
ations.
● When driving on dirt, gravel or snow-covered roads
● When driving with tire chains
● When driving over bumps in the road
● When driving over roads with potholes or roads with uneven pavement
■ TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC is operating. 
Do not drive the vehicle in conditions where stability and power may be lost.

268
PRIUS_U (OM47668U) U.S.A.
3-1. Using the air conditioning system and defogger
Air conditioning system .... 270
Using the steering wheel  climate remote control 
switches ......................... 280
Solar Ventilation 
System ........................... 282
Remote Air Conditioning  System ........................... 285
Rear window and outside rear  view mirror defoggers .... 289
3-2. Using the audio system Audio system type............ 291
Using the radio ................. 294
Using the CD player ......... 303
Playing back MP3 and WMA discs............................... 311
Optimal use of the audio 
system ........................... 319
Using the AUX adapter .... 322
Using the steering 
switches ......................... 323
Interior features3

280
3-1. Using the air conditioning system and defogger
PRIUS_U (OM47668U) U.S.A.
Using the steering wheel climate remote control switches
Adjusting the temperature settingPress “ ” on to increase the temperature and “ ” to
decrease the temperature.
Some air conditioning features can be controlled using the switches
on the steering wheel.
Outside air or recirculated
air mode
Temperature control
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281
3-1. Using the air conditioning system
and defogger
3
Interior features
PRIUS_U (OM47668U) U.S.A.
Changing the recirculated air mode
Press . 
The mode switches between outside air mode and recirculated air
mode each time the switch is pressed.
■ When operating the steering switches
On vehicles with touch tracer display, the steering switches operation status
is displayed on the instrument cluster for confirmation purposes. ( P. 182)
CAUTION
■To reduce the risk of an accident
Exercise care when operating the air conditioning switches on the steering
wheel.

323
3-2. Using the audio system
3
Interior features
PRIUS_U (OM47668U) U.S.A.
Using the steering switches
Turning on the powerPress when the audio system is turned off.
The audio system can be turned off by holding the switch down for 1 sec-
ond or more.
Changing the audio sourcePress when the audio system is turned on. The audio source
changes as follows each time the bu tton is pressed. If a CD is not
inserted, that mode will be skipped.
FM (1, 2) CD player AM SAT (1, 2, 3)
Some audio features can be cont rolled using the switches on the
steering wheel.
Vo l u m e
Power on, select audio
source
Radio: Select radio stations
CD: Select tracks, discs and folder
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325
3-2. Using the audio system
3
Interior features
PRIUS_U (OM47668U) U.S.A.
■
Canceling automatic selection of a radio station
Push the same switch.
■ When operating the steering switches
On vehicles with touch tracer display, the steering switches operation status
is displayed on the instrument cluster for confirmation purposes. ( P. 182)
CAUTION
■To reduce the risk of an accident
Exercise care when operating the audio switches on the steering wheel.

330 3-3. Using the hands-free system (for cellular phone)
PRIUS_U (OM47668U) U.S.A.
■Steering wheel
Vo l u m e
The voice guidance volume
cannot be adjusted by using
this button.
Press: Voice command sys-
tem on
Press and hold: Voice com-
mand system off
Hands-free phone system
off/ends a call/refuses a call
Hands-free phone system
on/starts a call
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