2012 TOYOTA IQ engine

214 2-3. Operating the lights and wipers
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Daytime running light system (if equipped)
To make your vehicle more visible to other drivers, the headlights and tail
lights turn on automatically whenever the engine is started. (However, the
daytime running light system will be cancelled when the headlight switch is
operated manually or the automatic headlight system turns on the tail lights.)
Daytime running lights are not designed for use at night.
Headlight control sensor (if equipped)
Automatic light off system (if equipped)
Vehicles without smart entry & start system
When the light switch is in
AUTO: The headlights and all lights turn off
automatically if the engine switch is turned to ACC position or turned
OFF and the driver’s door is opened.
To turn the lights on again, switch to ON mode, or turn the light switch off
once and then back to the
or position.
Vehicles with smart entry & start system
When the light switch is in AUTO: The headlights and all lights turn off
automatically if the “ENGINE START STOP” switch is switched to
ACCESSORY mode or turned OFF and the driver’s door is opened.
To turn the lights on again, switch to IGNITION ON mode, or turn the light
switch off once and then back to
or .
The sensor may not function properly if
an object is placed on the sensor, or any-
thing that blocks the sensor is affixed to
the windshield.
Doing so interferes with the sensor
detecting the level of ambient light and
may cause the automatic headlight sys-
tem to malfunction.

215 2-3. Operating the lights and wipers
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When driving
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Light reminder buzzer
Vehicles without smart entry & start system
A buzzer sounds when the engine switch is turned OFF or turned to the
ACC position and the driver’s door is opened while the lights are turned
on.
Vehicles with smart entry & start system
A buzzer sounds when the “ENGINE START STOP” switch is turned OFF
or switched to ACCESSORY mode and the driver’s door is opened while
the lights are turned on.
Customization that can be configured at any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional
Settings of the light sensor sensitivity can be changed.
(Customizable features P. 459)
NOTICE
To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not run-
ning.

220 2-3. Operating the lights and wipers
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The windshield wiper and washer can be operated when
Vehicles without smart entry & start system
The engine switch is in the ON position.
Vehicles with smart entry & start system
The “ENGINE START STOP” switch is in IGNITION ON mode.
Effects of vehicle speed on wiper operation (vehicles with rain-sensing
windshield wipers)
Even when the wipers are not in AUTO mode, wiper operation varies
depending on vehicle speed when the washer is being used (delay until drop
prevention wiper sweep occurs).
Rain drop sensor (vehicles with rain-sensing windshield wipers)
Washer/wiper dual opera-
tion
Wipers will automatically oper-
ate a couple of times after the
washer squirts.
The sensor judges the amount of rain-
drops.

221 2-3. Operating the lights and wipers
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When driving
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Vehicles without smart entry & start system:
If the wiper switch is turned to AUTO position while the engine switch is in
the ON position, the wiper will operate once to show that AUTO mode is
activated.
Vehicles with smart entry & start system:
If the wiper switch is turned to AUTO position while the “ENGINE START
STOP” switch is in IGNITION ON mode, the wiper will operate once to
show that AUTO mode is activated.
If the temperature of the raindrop sensor is 90°C (194°F) or higher, or
-10°C (14°F) or lower, automatic operation may not occur. In this case,
operate the wipers in any mode other than “AUTO”.
If no windshield washer fluid sprays
Check that the washer nozzles are not blocked and that there is washer fluid
in the windshield washer fluid reservoir.
CAUTION
Caution regarding the use of windshield wipers in AUTO mode
(vehicles with rain-sensing windshield wipers)
The windshield wipers may operate unexpectedly if the sensor is touched or
the windshield is subject to vibration in AUTO mode. Take care that your fin-
gers or anything else does not become caught in the windshield wipers.
NOTICE
When the windshield is dry
Do not use the wipers, as they may damage the windshield.
When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled
toward you and held continually.
When a nozzle becomes blocked
Do not try to clear it with a pin or other object. The nozzle will be damaged.

223 2-3. Operating the lights and wipers
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When driving
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The rear window wiper and washer can be operated when
Vehicles without smart entry & start system
The engine switch is in the ON position.
Vehicles with smart entry & start system
The “ENGINE START STOP” switch is in IGNITION ON mode.
NOTICE
When the rear window is dry
Do not use the wipers, as they may damage the rear window.
Vehicles without intermittent wiper
Normal window wiper oper-
ation
Washer/wiper dual opera-
tion
Washer operation

225 2-4. Using other driving systems
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When driving
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When the TRC/VSC systems are operating
The slip indicator will flash while
the TRC/VSC systems are oper-
ating.
To disable TRC and/or VSC systems
If the vehicle gets stuck in fresh snow or mud, TRC and VSC systems
may reduce power from the engine to the wheels. You may need to
turn the system off to enable you to rock the vehicle in order to free it.
Turning off TRC
To turn the TRC system off,
quickly press and release the
button.
The TRC OFF indicator will come
on.
Press the button again to turn the
system back on.
Turning off TRC and VSC systems
Press and hold the button for
more than 3 seconds while the
vehicle is stopped to turn off both
TRC and VSC systems.
The TRC OFF and VSC OFF indi-
cators will come on.
Press the button again to turn
both systems back on.

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Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automati-
cally reactivated in the following situations:
Vehicles without smart entry & start system
When the engine switch is turned off
If only the TRC system is turned off, the TRC will turn on when vehicle
speed increases
If both the TRC and VSC systems are turned off, automatic reactivation
will not occur when vehicle speed increases.
Vehicles with smart entry & start system
When the “ENGINE START STOP” switch is turned off
If only the TRC system is turned off, the TRC will turn on when vehicle
speed increases
If both the TRC and VSC systems are turned off, automatic reactivation
will not occur when vehicle speed increases.
Sounds and vibrations caused by the ABS, VSC, TRC and brake assist
systems
A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indi-
cate 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 is operated, a motor sound (whirring sound) may
be heard. This does not indicate a malfunction.

227 2-4. Using other driving systems
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When driving
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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 engine off. The sys-
tem should return to normal within 10 minutes.
CAUTION
The following situations may lead to an accident resulting in serious injury or
even death.
The ABS does not operate 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 operating may exceed that of nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, especially in the fol-
lowing situations.
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 roads
When TRC may not operate effectively
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRC system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
When the VSC is activated
The slip indicator flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator flashes.