Get Information Before Driving -> Iridium-tipped spark plugs / Brake system Guide for Toyota Aurion 4 Door First Generation (2006-2012)

INFORMATION BEFORE DRIVING YOUR TOYOTA

Long reach iridium-tipped

spark plugs

Brake system

The tandem master cylinder brake system is

a hydraulic system with two separate sub-

systems. If either sub-system should fail, the

other will still work. However, the pedal will

be harder to press, and your stopping dis-

tance will increase. Also, the brake system

warning light may come on.

Long reach

type

CAUTION

Do not drive your vehicle with only a

single brake system. Have your brakes

fixed immediately.

Your engine is fitted with long reach irid-

ium-tipped spark plugs.

BRAKE BOOSTER

The brake booster uses engine vacuum to

power-assist the brakes. If the engine should

stop while you are driving, you can bring the

vehicle to a stop with normal pedal pressure.

There is enough reserved vacuum for one or

two stops—but no more!

NOTICE

Use only iridium-tipped spark plugs. Do

not adjust the spark gap for engine per-

formance or smooth driveability.

CAUTION

For details about the spark plug type, see

“Service specifications” on page 281 in Sec-

tion 8.

D Do not pump the brake pedal if the en-

gine stalls. Each push on the pedal

uses up your reserved vacuum.

D Even if the power assist is completely

lost, the brakes will still work. But you

will have to push the pedal hard, much

harder than normal. And your braking

distance will increase.

ANTI-LOCK BRAKE SYSTEM

The anti-lock brake system is designed to

help prevent lock-up of the wheels during

sudden braking or braking on slippery

road surfaces. This assists in providing

directional stability and steering perform-

ance of the vehicle under these circum-

stances.

191

INFORMATION BEFORE DRIVING YOUR TOYOTA

D At the end of the anti-lock brake system

activation, the brake pedal may move a

little forward.

CAUTION

Effective way to press the ABS brake

pedal:

D When the anti-lock brake system func-

tion is in action, you may feel the

brake pedal pulsating and hear

noise. In this situation, to let the anti-

lock brake system work for you, just

hold the brake pedal down more firm-

ly. Do not pump the brake in a panic

stop. This will result in reduced brak-

ing performance.

The anti-lock brake system becomes opera-

tive after the vehicle has accelerated to a

speed in excess of approximately 10 km/h.

It stops operating when the vehicle deceler-

ates to a speed below approximately 5 km/h.

Depressing the brake pedal on slippery road

surfaces such as on a manhole cover, a steel

plate at a construction site, joints in a bridge,

etc. on a rainy day tends to activate the anti-

lock brake system.

You may hear a click or motor sound in the

engine compartment for a few seconds when

the engine is started or just after the vehicle

begins to move. This means that the anti-lock

brake system is in the self-check mode, and

does not indicate a malfunction.

When the anti-lock brake system is acti-

vated, the following conditions may occur.

They do not indicate a malfunction of the

system:

D You may hear the anti-lock brake system

operating and feel the brake pedal pulsat-

ing and the vibrations of the vehicle body

and steering wheel. You may also hear the

motor sound in the engine compartment

even after the vehicle is stopped.

192

INFORMATION BEFORE DRIVING YOUR TOYOTA

CAUTION

D Do not overestimate the anti-lock brake

system. There are limits to the vehicle’s

stability and the effectiveness of steer-

ing wheel operation even when the anti-

lock brake system is operating.

D Always drive with due care and main-

tain a moderate speed and safe dis-

tance from the vehicle in front of you.

D The anti-lock brake system does not

provide vehicle control if:

D tyre grip performance exceeds its

capability, or

ABS warning light

The light comes on when the ignition switch

is set to ON. If the anti-lock brake system

works properly, the light turns off after a few

seconds. Thereafter, if the system malfunc-

tions, the light comes on again.

D if hydroplaning (aquaplaning) oc-

curs during high speed driving in

the rain.

D The anti-lock brake system is not de-

signed to reduce the stopping dis-

tance. In fact, compared with vehicles

without anti-lock brake systems, your

vehicle may require a longer stopping

distance in the following cases:

When the ABS warning light is on (and the

brake system warning light is off), the anti-

lock brake system does not operate, but the

brake system still operates conventionally.

When the ABS warning light is on (and the

brake system warning light is off), the anti-

lock brake system does not operate, so that

the wheels could lock up during a sudden

braking or braking on slippery road surfaces.

D when driving on rough, gravel or

snow-covered roads,

D when driving with tyre chains in-

stalled,

If either of the following conditions oc-

curs, this indicates a malfunction some-

where in the components monitored by

the warning light system. Contact your

Toyota dealer as soon as possible to ser-

vice the vehicle.

D when driving over joins or steps in

the road, or

D when driving on roads where the

road surface is pitted or has other

differences in surface height.

D Always use 4 tyres of specified size

at appropriate pressure. The anti-lock

brake system detects vehicle speeds

using the speed sensors for individual

wheels’ turning speeds. Accurate

turning speed may fail to be detected,

resulting in a longer stopping dis-

tance if unspecified tyres are used.

D The light does not come on when the igni-

tion switch is set to ON, or remains on.

D The light comes on while you are driving.

A warning light turning on briefly during oper-

ation does not indicate a problem.

193

INFORMATION BEFORE DRIVING YOUR TOYOTA

Vehicle stability control system—

DRUM-IN-DISC TYPE PARKING BRAKE

SYSTEM

The light comes on when the ignition

switch is set to ON. If the anti-lock brake

system and the brake assist system work

properly, the light turns off after a few sec-

onds. Thereafter, if the system malfunc-

tions, the light comes on again.

Your vehicle has a drum-in-disc type parking

brake system. This type of brake system

needs bedding-down of the brake shoes peri-

odically or whenever the parking brake shoes

and/or drums are replaced.

When the ABS warning light is on (and

the brake system warning light is off), the

anti-lock brake system, the brake assist

system, the traction control system and

the vehicle stability control system do not

operate, but the brake system still oper-

ates conventionally.

Have your Toyota dealer perform the bed-

ding-down.

BRAKE ASSIST SYSTEM

When you slam the brakes on, the brake

assist system judges as an emergency

stop and provides more powerful braking

for a driver who cannot hold down the

brake pedal firmly.

When the ABS warning light is on (and the

brake system warning light is off), the anti-

lock brake system does not operate so that

the wheels could lock up during a sudden

braking or braking on slippery road sur-

faces.

Without vehicle stability control system—

When you slam the brakes on, more powerful

braking will be applied. At this time, you may

hear a sound behind the brake pedal. This

does not indicate a malfunction.

If either of the following conditions oc-

curs, this indicates a malfunction some-

where in the components monitored by

the warning light system. Contact your

Toyota dealer as soon as possible to

service the vehicle.

With vehicle stability control system—

When you slam the brakes on, more powerful

braking will be applied. At this time, you may

hear a sound in the engine compartment and

feel the vibrations of the brake pedal. This

does not indicate a malfunction.

D The light does not come on when the igni-

tion switch is set to ON, or remains on.

The brake assist system becomes operative

after the vehicle has accelerated to a speed

in excess of approximately 10 km/h. It stops

operating when the vehicle decelerates to a

speed below approximately 5 km/h.

D The light comes on while you are driving.

A warning light turning on briefly during

operation does not indicate a problem.

For an explanation of this system’s warning

light, see “Warning lights and buzzers” on

page 113 in Section 1--6.

CAUTION

If the ABS warning light remains on to-

gether with the brake system warning

light, immediately stop your vehicle at a

safe place and contact your Toyota dealer.

In this case, not only will the anti-lock

brake system fail but the vehicle will also

become extremely unstable during brak-

ing.

194

Information Before Driving -> Iridium-tipped spark plugs / Brake system for Your Toyota Aurion 4 Door First Generation (2006-2012)

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