1997 Lexus GS 300 User Guide 3 - Page 17

1997 Lexus GS 300 Manual

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STARTING AND DRIVING You may hear a slight clicking noise in the engine compartment when the engine is started. This means that the traction control system is in the self-check mode, and does not indicate malfunction. When the traction control system is operating, you may feel vibration of your vehicle, caused by operation of the brakes. This indicates the system is functioning properly. When getting the vehicle out of mud or new snow, etc. the traction control system will help operate to prevent the wheels from spinning. 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 distance will be longer. Also, the brake system warning light may come on. ! CAUTION Traction control failure warning If the "TRAC OFF" indicator/warning light flashes, contact your Lexus dealer as soon as possible. there may be trouble in the traction control system. Do not drive your vehicle with only a single brake system. Have your brakes fixed immediately. Brake booster The brake booster uses engine vacuum to power-assist the brakes. If the engine should quit while you are driving, you can bring the vehicle to a stop with normal pedal pressure. There is enough reserve vacuum for one or two stops but no more! ! CAUTION Under certain slippery road conditions, full traction of the vehicle and power to the rear wheels cannot be maintained, even though the traction control system is in operation. Do not drive the vehicle under any speed or maneuvering conditions which will cause the vehicle to lose traction. In situations where the road surface is covered with ice or snow, your vehicle should be fitted with snow tires or tire chains. Always drive at an appropriate and cautious pace. ! S CAUTION Do not pump the brake pedal if the engine stalls. Each push on the pedal uses up your vacuum reserve. S 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 be longer. 147

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STARTING AND DRIVING
147
You may hear a slight clicking noise in the engine
compartment when the engine is started.
This means that
the traction control system is in the self–check mode, and
does not indicate malfunction.
When the traction control
system is operating, you may feel vibration of your vehicle,
caused by operation of the brakes.
This indicates the
system is functioning properly.
When getting the vehicle out of mud or new snow, etc. the
traction control system will help operate to prevent the
wheels from spinning.
Traction control failure warning
If the “TRAC OFF” indicator/warning light flashes, contact
your Lexus dealer as soon as possible.
there may be trouble
in the traction control system.
CAUTION
!
Under certain slippery road conditions, full traction
of the vehicle and power to the rear wheels cannot
be maintained, even though the traction control
system is in operation.
Do not drive the vehicle
under any speed or maneuvering conditions which
will cause the vehicle to lose traction.
In situations
where the road surface is covered with ice or snow,
your vehicle should be fitted with snow tires or tire
chains.
Always drive at an appropriate and cautious
pace.
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 distance will
be longer.
Also, the brake system warning light may come
on.
CAUTION
!
Do not drive your vehicle with only a single brake
system.
Have your brakes fixed immediately.
Brake booster
The brake booster uses engine vacuum to power–assist the
brakes.
If the engine should quit while you are driving, you
can bring the vehicle to a stop with normal pedal pressure.
There is enough reserve vacuum for one or two stops but no
more
!
CAUTION
!
S
Do not pump the brake pedal if the engine stalls.
Each push on the pedal uses up your vacuum
reserve.
S
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 be longer.