Get Driving -> PCS (Pre-Collision system) Guide for Toyota Aygo SUV Second Generation (2015-2021)

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4-5. Toyota Safety Sense

PCS (Pre-Collision system)

The pre-collision system uses the front sensor to detect vehi-

cles in front of your vehicle. When the system determines that

the possibility of a frontal collision with a vehicle is high, a warn-

ing operates to urge the driver to take evasive action and the

potential brake pressure is increased to help the driver avoid the

collision. If the system determines that the possibility of a fron-

tal collision with a vehicle is extremely high, the brakes are auto-

matically applied to help avoid the collision or help reduce the

impact of the collision.

The pre-collision system can be disabled/enabled and the warning

timing can be changed. (P. 220)

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◆ Pre-collision warning

When the system determines

that the possibility of a frontal

collision is high, a buzzer will

sound and the PCS activation

indicator will flash to urge the

driver to take evasive action.

◆ Pre-collision brake assist

When the system determines that the possibility of a frontal colli-

sion with a vehicle is high, the system applies greater braking force

in relation to how strongly the brake pedal is depressed.

◆ Pre-collision braking

When the system determines that the possibility of a frontal colli-

sion with a vehicle is high, the system warns the driver. If the sys-

tem determines that the possibility of a collision is extremely high,

the brakes are automatically applied to help avoid the collision or

reduce the collision speed.

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4-5. Toyota Safety Sense

WARNING

■Limitations of the pre-collision system

●The driver is solely responsible for safe driving. Always drive safely, taking

care to observe your surroundings.

Do not use the pre-collision system instead of normal braking operations

under any circumstances. This system will not prevent collisions or lessen

collision damage or injury in every situation. Do not overly rely on this sys-

tem. Failure to do so may lead to an accident, resulting in death or serious

injury.

●Although this system is designed to help avoid and reduce the impact of a

collision, its effectiveness may change according to various conditions,

therefore the system may not always be able to achieve the same level of

performance.

Read the following conditions carefully. Do not overly rely on this system

and always drive carefully.

ꢀ Conditions under which the system may operate even if there is no pos-

sibility of a collision: P. 222

ꢀ Conditions under which the system may not operate properly: P. 226

●Do not attempt to test the operation of the pre-collision system yourself, as

the system may not operate properly, possibly leading to an accident.

■Pre-collision braking

●The pre-collision braking function may not operate if certain operations are

performed by the driver. If the accelerator pedal is being depressed

strongly or the steering wheel is being turned, the system may determine

that the driver is taking evasive action and possibly prevent the pre-colli-

sion braking function from operating.

●In some situations, while the pre-collision braking function is operating,

operation of the function may be canceled if the accelerator pedal is

depressed strongly or the steering wheel is turned and the system deter-

mines that the driver is taking evasive action.

●A large amount of braking force is applied while the pre-collision braking

function is operating. Additionally, as the operation of the pre-collision

braking function will be canceled after the vehicle has been stopped for

approximately 2 seconds if it is stopped by the operation of the pre-colli-

sion braking function, the driver should depress the brake pedal as neces-

sary.

●If the brake pedal is being depressed, the system may determine that the

driver is taking evasive action and possibly delay the operation timing of

the pre-collision braking function.

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4-5. Toyota Safety Sense

WARNING

●While driving, such as when driving through a railway crossing, the system

may determine that the possibility of a collision with an object, such as rail-

way crossing barrier, is high and operate the pre-collision braking function.

To move the vehicle in an emergency, such as if the system operates in a

railway crossing, perform the following operations and then take the nec-

essary measures to ensure your safety.

ꢀ If the vehicle has been stopped, depress the accelerator pedal.

ꢀ If the vehicle is decelerating, fully depress the accelerator pedal.

(P. 221)

ꢀ Disable the pre-collision system. (P. 220)

■When to disable the pre-collision system

In the following situations, disable the system, as it may not operate prop-

erly, possibly leading to an accident resulting in death or serious injury:

●When the vehicle is being towed

●When your vehicle is towing another vehicle

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●When transporting the vehicle via truck, boat, train or similar means of

transportation

●When the vehicle is raised on a lift with the engine running and the tires

are allowed to rotate freely

●When inspecting the vehicle using a drum tester such as a chassis dyna-

mometer or speedometer tester, or when using an on vehicle wheel bal-

ancer

●If the vehicle cannot be driven in a stable manner, such as when the vehi-

cle has been in an accident or is malfunctioning

●When the vehicle is driven in a sporty manner or off-road

●When the condition of the tires is poor and they do not perform well

(P. 370)

●When tires of a size other than specified are installed

●When tire chains are installed

●When a compact spare tire or an emergency tire puncture repair kit is used

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4-5. Toyota Safety Sense

Changing settings of the pre-collision system

■ Enabling/disabling the pre-collision system

Press the PCS switch for 3 sec-

onds or more.

The PCS warning light will turn

on and a message will be dis-

played in the drive monitor dis-

play when the system is turned

off.

To enable the system, press the

PCS switch again.

The pre-collision system is

enabled each time the engine is

started.

■ Changing the pre-collision warning timing

Press the PCS switch to turn on the PCS activation indicator and

display the current warning timing in the drive monitor display. Each

time the PCS switch is pressed in the displayed state, the timing for

the warning changes as follows:

If the operation timing setting has been changed, the setting will be

retained the next time the engine is started.

Far

1

The warning will begin to oper-

ate earlier than with the default

timing.

Middle

2

This is the default setting.

Near

3

The warning will begin to oper-

ate later than with the default

timing.

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4-5. Toyota Safety Sense

■Operational conditions

The pre-collision system is enabled and determines that the possibility of a

frontal collision with a vehicle is high.

Each function is operational at the following speeds:

●Pre-collision warning:

ꢀ Vehicle speed is approximately 15 to 140 km/h (10 to 85 mph).

ꢀ The relative speed between your vehicle and a preceding vehicle is

approximately 15 km/h (10 mph) or more.

●Pre-collision brake assist:

ꢀ Vehicle speed is approximately 30 to 80 km/h (20 to 50 mph).

ꢀ The relative speed between your vehicle and a preceding vehicle is

approximately 30 km/h (20 mph) or more.

●Pre-collision braking:

ꢀ Vehicle speed is approximately 10 to 80 km/h (7 to 50 mph).

ꢀ The relative speed between your vehicle and a preceding vehicle is

approximately 10 km/h (7 mph) or more.

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The system may not operate in the following situations:

●If a battery terminal has been disconnected and reconnected and then the

vehicle has not been driven for a certain amount of time

●If the shift lever is in R

●If VSC is disabled (only the pre-collision warning function will be opera-

tional)

■Cancelation of the pre-collision braking

●If either of the following occur while the pre-collision braking function is

operating, it will be canceled:

ꢀ The accelerator pedal is depressed strongly.

ꢀ The steering wheel is turned sharply or abruptly.

●If the vehicle is stopped by the operation of the pre-collision braking func-

tion, the operation of the pre-collision braking function will be canceled after

the vehicle has been stopped for approximately 2 seconds.

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4-5. Toyota Safety Sense

■Conditions under which the system may operate even if there is no pos-

sibility of a collision

●In some situations such as the following, the system may determine that

there is a possibility of a frontal collision and operate.

ꢀ When passing a vehicle in an oncom-

ing lane that is stopped to make a

right/left turn

ꢀ When passing an oncoming vehicle

while making a left or right turn

ꢀ When driving on a road where relative

location to vehicle ahead in an adja-

cent lane may change, such as on a

winding road

ꢀ When rapidly closing on a preceding

vehicle

ꢀ If the front of the vehicle is raised or lowered, such as when the road sur-

face is uneven or undulating

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4-5. Toyota Safety Sense

ꢀ When passing extremely close to a

vehicle or structural object

ꢀ When there is a vehicle or object by

the roadside at the entrance of a

curve

ꢀ When driving on a narrow path surrounded by a structure, such as in a

tunnel or on an iron bridge

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ꢀ When there is a reflective object

(manhole cover, steel plate, etc.),

steps, dip, or a protrusion on the road

surface or roadside

ꢀ When passing through a place with a

low structure above the road (low ceil-

ing, traffic sign, etc.)

ꢀ When there is a structural object

(overpass, traffic sign, billboard,

street light, etc.) at the top of an uphill

road

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4-5. Toyota Safety Sense

ꢀ When rapidly closing on an electric

toll gate barrier, parking area barrier,

or other barrier that opens and closes

ꢀ When using an automatic car wash

ꢀ When approaching a low hanging

object that may contact the vehicle,

such as a banner, tree branches or

thick grass

ꢀ When the vehicle is hit by water,

snow, dust, etc. from a vehicle ahead

ꢀ When driving through steam or

smoke

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4-5. Toyota Safety Sense

ꢀ When there are patterns or paint on the road or a wall that may be mis-

taken for a vehicle

ꢀ When the front part of the vehicle is

raised or lowered

ꢀ When the sensor is misaligned due to

a strong impact being applied to the

sensor, etc.

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ꢀ When the vehicle is being parked in a

place where there is a low hanging

object at the height of the front sensor

ꢀ When the windshield is covered with

raindrops, etc.

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4-5. Toyota Safety Sense

■Situations in which the system may not operate properly

●In some situations such as the following, a vehicle may not be detected by

the front sensor, preventing the system from operating properly:

ꢀ If an oncoming vehicle is approaching your vehicle

ꢀ When approaching the side or front of a vehicle

ꢀ If a preceding vehicle has a small rear end, such as an unloaded truck

ꢀ If a preceding vehicle has a low rear

end, such as a low bed trailer

ꢀ If a vehicle ahead is carrying a load which protrudes past its rear bumper

ꢀ If a vehicle ahead has extremely high

ground clearance

ꢀ If a vehicle ahead is irregularly shaped, such as a tractor or side car

ꢀ If the sun or other light is shining directly on a vehicle ahead

ꢀ If a vehicle cuts in front of your vehicle

or emerges from beside a vehicle

ꢀ If a vehicle ahead makes an abrupt maneuver (such as sudden swerving,

acceleration or deceleration)

ꢀ When suddenly cutting behind a preceding vehicle

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4-5. Toyota Safety Sense

ꢀ When a vehicle ahead is not directly

in front of your vehicle

ꢀ When driving in inclement weather

such as heavy rain, fog, snow or a

sand storm

ꢀ When the vehicle is hit by water, snow, dust, etc. from a vehicle ahead

ꢀ When driving through steam or smoke that may obscure vehicles ahead

ꢀ When driving in a place where the surrounding brightness changes sud-

denly, such as at the entrance or exit of a tunnel

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ꢀ When a very bright light, such as the

sun or the headlights of oncoming

traffic, shines directly into the front

sensor

ꢀ When the surrounding area is dim,

such as at dawn or dusk, or while at

night or in a tunnel

ꢀ While driving on a curve and for a certain amount of time after driving on

a curve

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4-5. Toyota Safety Sense

ꢀ If your vehicle is skidding

ꢀ When the front part of the vehicle is

raised or lowered

ꢀ If the wheels are misaligned

ꢀ If a wiper blade is blocking the front sensor

ꢀ The vehicle is wobbling.

ꢀ The vehicle is being driven at extremely high speeds.

ꢀ When driving on roads with sharp bends or uneven surfaces

ꢀ When a preceding vehicle is a poor reflector of laser

ꢀ When the sensor is misaligned due to

a strong impact being applied to the

sensor, etc.

●In 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

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4-5. Toyota Safety Sense

■If the PCS warning light flashes or illuminates

The pre-collision system may be temporarily unavailable or there may be a

malfunction in the system.

●In the following situations, the warning light will be cleared and the system

will become operational when normal operating conditions return:

ꢀ When the area around the front sensor is hot, such as after the vehicle

has been parked in the sun

ꢀ When the windshield is fogged up or covered with condensation or ice

(P. 320, 326)

ꢀ When driving in conditions where the front sensor cannot detect an

object, such as in the dark (at night on a road without street lights or other

lights, etc.), when bright light is shining into the sensor, or in snow or fog.

ꢀ When the front sensor or the area around either sensor is cold, such as in

an extremely cold environment

ꢀ If the area in front of the front sensor is obstructed, such as when the

hood is open

●If the PCS warning light continues to flash or illuminate, the system may be

malfunctioning. Have the vehicle inspected by any authorized Toyota retailer

or Toyota authorized repairer, or any reliable repairer immediately.

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■If VSC is disabled

●If TRC and VSC are disabled (P. 246), the pre-collision brake assist and

pre-collision braking functions are also disabled. However, the pre-collision

warning function will still operate.

●The PCS warning light illuminates.

Driving -> PCS (Pre-Collision system) for Your Toyota Aygo SUV Second Generation (2015-2021)

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