warning light lexus LS400 1995 Engine / 1995 LS400: STARTING AND DRIVING

STARTING AND DRIVING
139 When the difference between the actual vehicle speed and the
set speed is less than 5 km / h (3 mph), the set speed can be
lowered 1.6 km / h (1 mph) each time by pressing the control
lever downward in the “SET / COAST” direction quickly within
0.6 seconds.
However, a quicker way to reset is to depress the brake pedal
and then press the control lever downward in the
“SET / COAST” direction.
Resuming the preset speed
Press the control lever upward in the “RES / ACC” direction.
The vehicle will resume the speed set prior to cancellation
unless the vehicle speed is less than 40 km / h (25 mph) or is
16 km / h (10 mph) below the preset speed.
Cruise control failure warning
If the “CRUISE” indicator light in the instrument cluster flashes
when using the cruise control, push the main switch to turn the
system off and then push it again to turn it on.
If any of the following conditions then occurs, there is some
trouble in the cruise control system.

The indicator light does not come on.

The indicator light flashes again.

The indicator light goes out after it comes on.
If this is the case, contact your Lexus dealer and have your
Lexus inspected.
ELECTRONICALLY MODULATED
AIR SUSPENSION
(U.S.A. ONLY)
This electronically modulated air suspension adjusts the
damping effect on the shock absorbers and the vehicle
height. This adjustment is automatically made in
response to the driving conditions to provide good riding
comfort and stability in all driving conditions.
(a) Vehicle height adjustment
This system maintains a stable vehicle height, regardless
of occupants and luggage weight. You can select one of
the following modes using a selector switch.

STARTING AND DRIVING
140“NORMAL” mode − For driving on roads with a normal
surface.
“HIGH” mode − For driving on rough roads which are
unsurfaced or continually bumpy.
The damping effect is set slightly firmer in “HIGH” mode. So
you may feel the vibration of the vehicle compared to in
“NORMAL” mode. However, this does not mean a malfunction
in the system. We recommend you use a “NORMAL” mode in
normal driving.
To change the mode, push the selector switch.
“NORMAL” mode
The vehicle height remains at normal height at all driving
speeds.
“HIGH” mode
The vehicle height switches between the following two vehicle
heights according to the driving conditions:
Vehicle height
Driving condition
NormalMedium and high speed driving
HighLow speed driving
The indicator light shows “HIGH” mode is selected.
When you turn the ignition key to the “ON” position, the
indicator light will come on for 2 seconds in any mode.
NOTICE
For vehicles equipped with the height control switch, be
sure to turn the ignition switch off before jacking. If this
is not done, the vehicle height adjustment function will
operate, which may cause body damage.
(b) Malfunction warning
If the “HI” indicator light blinks, there is a malfunction in this
system. Have the system checked by your Lexus dealer at the
first opportunity.

STARTING AND DRIVING
141
TRACTION CONTROL SYSTEM
The traction control system automatically controls
spinning of the rear wheels which may occur when
accelerating on slippery road surfaces, thus assisting
driver control and driving power to the rear wheels.
When you turn the ignition switch on, this system always
turns on. Leave the system on during ordinary driving so
that it can operate when needed. When traction control is
applied, the slip indicator light blinks.
You can turn off the traction control system by pushing
the “TRAC−OFF−” switch. The “TRAC OFF”
indicator / warning light will then come on. Pushing the
“TRAC−OFF−” switch a second time turns the system
back on and extinguishes the “TRAC OFF”
indicator / warning light.
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 operate to prevent the wheels from
spinning. Even though the accelerator pedal is fully depressed,
the engine speed will be restrained to a certain level.

STARTING AND DRIVING
142
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 stability of
the vehicle and power to the rear wheels cannot be
maintained, even though the traction control system is
in operation. In situations where the road surface is
covered with ice or snow, your vehicle should be fitted
with snow tires or tire chains and driven at a more
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

Do not pump the brake pedal if the engine stalls. Each
push on the pedal uses up your vacuum reserve.

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.

STARTING AND DRIVING
144“ABS” warning light
This light comes on when the ignition key is turned to the
“ON” position. After about 3 seconds, the light will go off.
If either of the following conditions occurs, this indicates a
malfunction somewhere in the parts monitored by the warning
light system. Contact your Lexus dealer as soon as possible
to service the vehicle.

The light does not come on as described above, or remains
on.

The light comes on while driving.
Even if the anti−lock brake system should fail, the brake
system will still operate conventionally. Have your vehicle
checked by your Lexus dealer as soon as possible.
Drum−in−disc type parking brake system
Your vehicle has a drum−in−disc type parking brake system.
This type of brake system needs bedding−down of the brake
shoes periodically or whenever the parking brake shoes
and / or drums are replaced.
Have your Lexus dealer perform the bedding−down.
Brake pad wear limit warning light
When your brake pads are worn enough to require
replacement, the brake pad wear limit warning light in the
instrument cluster comes on.
If the warning light comes on while driving, have the brake pads
checked and replaced by your Lexus dealer as soon as
possible. Expensive rotor damage can result if the pads are not
replaced when needed.