1997 TOYOTA LAND CRUISER Owners Manual

122
FUNCTIONS OF ENGINE OIL
Engine oil has the primary functions of lubri-
cating and cooling the inside of the engine,
and plays a major role in maintaining the
engine in proper working order. ENGINE OIL CONSUMPTION
It is normal that an engine should con-
sume some engine oil during normal
engine operation. The causes of oil
consumption in a normal engine are
as follows.
Oil is used to lubricate pistons, piston
rings and cylinders. A thin film of oil isleft on the cylinder wall when a piston
moves downwards in the cylinder.
High negative pressure generated
when the vehicle is decelerating sucks
some of this oil into the combustion
chamber. This oil as well as some part
of the oil film left on the cylinder wall is
burned by the high temperature com-
bustion gases during the combustionprocess.
Oil is also used to lubricate the stems
of the intake valves. Some of this oil is
sucked into the combustion chamber
together with the intake air and is
burned along with the fuel. High tem- perature exhaust gases also burn the
oil used to lubricate the exhaust valve stems.
The amount of engine oil consumed de-
pends on the viscosity of the oil, the
quality of the oil and the conditions the
vehicle is driven under.
More oil is consumed by high- speed driving
and frequent acceleration and deceleration.
A new engine consumes more oil, since its
pistons, piston rings and cylinder walls have
not become conditioned.
When judging the amount of oil con-
sumption, note that the oil may become
diluted and make it difficult to judge the
true level accurately. As an example, if a vehicle is used for re-
peated short trips, and consumes a normal
amount of oil, the dipstick may not show
any drop in the oil level at all, even after
1000 km (600 miles) or more. This is be-
cause the oil is gradually becoming diluted
with the fuel or moisture, making it appear
that the oil level has not changed.
The diluting ingredients evaporate out
when the vehicle is then driven at high
speeds, as on an expressway, making it appear that oil is excessively consumed
after driving as high speeds.
IMPORTANCE OF ENGINE OIL LEVELCHECK
One of the most important points in proper vehicle maintenance is to keep the engine
oil at the optimum level so that oil function
will
not be impaired. Therefore, it is essen-
tial that the oil level be checked regularly.
Toyota recommends that the oil level bechecked every time you refuel the vehicle.
NOTICE
Failure to check the oil level regularly could lead to serious
engine trouble due to insufficient oil.
Facts about engine oil consumption

123
For detailed information on the oil level
check,
see Checking the engine oil levelº
in Chapter 7-2. Tandem master cylinder brake system
The tandem master cylinder brake sys-
tem is a hydraulic system with two sepa-
rate sub-systems. If either sub-system
should fa
il, the other will still work. Howev-
er, 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 re- serve.
Even if the power assist is com-
pletely lost, the brakes will still
work. But you will have to push
the pedal hard-much harder than
normal. And your braking dis- tance will be longer
ANTI-LOCK BRAKE SYSTEM (with ABSº warning light)
The anti- lock brake system is designed to
automatically help prevent lock- up of the
wheels during sudden braking or braking on
slippery road surfaces. This assists in pro-
viding directional stability and steering per -
formance of the vehicle under these cir -
cumstances.
The anti- lock brake system becomes op-
erative after the vehicle has accelerated to
a speed in excess of approximately 10 km/h
(6 mph). It stops operating when the vehicle
decelerates to a speed below approximate-
ly 5 km/h (3 mph).
You may hear a sound in the engine
compartment for a few seconds when the
engine is started or just after the vehicle is started. This means that the anti-lock
brake system is in the self check mode,
and does not indicate a malfunction.
Brake system

124
Effective way to press the ABSº brake
pedal: When the anti-lock brake system
function is in action, you may feel the brake pedal pulsating and hear a noise.
In this situation, to let the anti-lock brake
system work for you, just hold the brake
pedal down more firmly. Do not pumpthe brake. This will result in reduced
braking performance.
The brake pedal pulsation caused by the
anti-lock brake system may indicate haz- ardous road surface conditions. Althoughthe anti-lock brake system assists in pro-
viding vehicle control, it is still important to
drive with all due care, because the anti-
lock brake system cannot overcome the
laws of physics that act on your vehicle: Braking capab ility is dependent on tire
friction with the road surface.
Even though the anti-lock brake sys-
tem is operating, a driver cannot main- tain full control on certain slippery road
surfaces, when cornering at highspeeds, or in violent maneuvers.
Avoid high speeds on wet roads. The
anti-lock brake system cannot elimi-
nate the risk of hydroplaning and lossof tire friction. Always maintain a safe distance from the
vehicle in
front of you. Compared with ve-
hicles not fitted with an anti-lock brake
system, your vehicle may require a longer
stopping distance in the following cases: Driving on rough, gravel or snow-cov-
ered roads.
Driving with tire chains installed.
Driving on roads where the road sur-
face is pitted or has other differencesin surface height.
CAUTION!
Do not use tires other than the
manufacturer 's designated tires, and
do not mix tires or wheels of different
sizes. You may prevent the antilockbrake system from operating at fulleffictiveness.ABSº warning light
This light comes on when the ignition key is turned to the ONº position. After about
3 seconds, the light will go off.
When the light is on with the rear dif feren-
tial locked, it indicates the anti-lock brake
system will not operate.
If either of the following conditions occurs, this indicates a malfunction somewhere inthe parts monitored by the warning light
system. Contact your Toyota dealer as
soon as possible to service the vehicle.

125

The light does not come on as de-
scribed above, or remains on.
The light comes on while driving with
the center differential unlocked
The light does not come on with the
center differential locked.
The system comes into operation with
the center differential locked.
Even if the anti-lock brake system should
fail, the brake system will still operate con-
ventionally. However, when the `ABS''
warning light is on (and the brake system
warning light is off), the anti-lock brake
system is not assisting brake perfor- mance so that the wheels can lock-up
during sudden braking or braking on slip-
pery road surfaces. Have your vehicle
checked by your Toyota dealer as soon as
possible
Drum-in-disc type parking brake sys- tem
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 park-
ing brake shoes and/or drums are re- placed.
Have your Toyota dealer perform the bed-
ding-down.
The brake pads wear limit indicators
on your disc brakes give a warning
noise w hen the brake pads are worn to
where replacement is required.
If you hear a squealing or scraping noise
while driving, have the brake pads
checked and replaced by your Toyota
dealer as soon as possible. Expensive ro-
tor damage can result if the pads are not
replaced when necessary. When stowing luggage or cargo in the ve-
hicle, observe the following:
Put luggage or cargo in the trunk when
at all possible. Be sure all items are se- cured in place.
Be careful to keep the vehicle bal-
anced. Locating the weight as far for-
ward as possible helps maintain bal- ance.
For better fuel economy, do not carryunneeded weight.
CAUTION!
To prevent luggage or packages
from sliding forward during brak-
ing, do not stack anything behind
the front seats higher than the seatbacks.
Never allow anyone to ride in the
luggage compartment. It is not
designed for passengers. They
should ride in their seats with
their seat belts properly fastened.
Otherwise, they are much more
likely suffer serious bodily injury,in the event of sudden braking or a collision.
Brake pad wear limit indicators Luggage stowage precautions

126
Do not drive with objects left on
top of the instrument panel. They
may interfere with the driver's
field of view. Or they may move
during sharp vehicle acceleration
or turning, and impair the driver's
control of the vehicle. In an acci-
dent they may injure the vehicle occupants.
Do not load the vehicle beyond the
vehicle capacity weight specified in
Part 8.
NOTICE
The rear step bumper is for rear end
protection and easier step-up load- ing.
CAUTION!
Do not allow more than one per-
son to get on the rear step bumper at a time. It is designed for only
one person.
Never drive the vehicle with any-
one on the rear step bumper.
The vehicle identification number
(VIN) is the legal identifier for your ve- hicle. This number is on the left top of
the instrument panel, and can be seen
through the windshield from outside.
The vehicle identification number (VIN) is
also on the Certification Label.
This is the primary identification number
for your T oyota. It is used in registering the
ownership of your vehicle.
Rear step bumper Your Toyota's identification

127
The engine number is stamped on the
engine block as shown.Your new vehicle carries theft preven-
tion labels which are approximately 56 mm (2.20 in.) by 16 mm (0.63 in.). The purpose of these labels is to reduce
the incidence of vehicle thefts by facilitat- ing the tracing and recovery of parts from
stolen vehicles. The label is designed so
that
once it is applied to a surface, any at-
tempt to remove it will result in destroying
the integrity of the label. Transferringthese labels intact from one part to anoth-
er, will be impossible.You should not attempt to remove
the theft prevention labels as it may
violate certain state or federal laws.
NOTICE
Theft prevention labels (except for Canada)

128
CAUTION!
Do not modify the suspension/chas-
sis with lift kits, spacers, springs,
etc. It can cause dangerous handling
characteristics resulting in loss ofcontrol. Determine what kind of tires your ve-
hicle is originally equipped with 1.
Summer tires.
Summer tires are high-speed capability
tires best suited to highway driving underdry conditions. Since summer tires do not have the same
traction performance as snow tires, sum-
mer tires are inadequate for driving on
snow-covered or icy roads. For driving on
snow-covered or icy roads, we recom-
mend using snow tires. If installing snow tires, be sure to replace all four tires. 2. All season tires
All season tires are designed to provide
better traction in snow and to be adequate
for driving in most winter conditions, as
well as for use all year round.
All season tires, however, do not have ad-
equate traction performance compared
with snow tires in heavy or loose snow.
Also, all season tires fall short in accelera-
tion and handling performance compared with summer tires in highway driving.CAUTION!
Do not mix summer and all sea-
son tires on your vehicle as this
can cause dangerous handling
characteristics, resulting in loss
of control.
Do not use tires other than the
manufacturer 's designated tires,
and do not mix tires or wheels of the sizes different from the origi- nals.
Suspension and chassis Types of tires

Part 3How to start the engineÐ
(a) Before cranking
Before starting the engine
129
STARTING AND DRIVING
Before starting the engine
How to start the engine
Tips for driving in various condi- tions
Off-road driving precautions
Winter driving tips
Trailer towing
How to save fuel and make your
vehicle last longer, too
1. Check
the area around the vehicle be-
fore entering it.
2. Adjust seat position, seatback angle, head restraint height and steering
wheel angle.
3. Adjust inside and outside rear view mirrors.
4. Lock all doors.
5. Fasten seat belts. 1. Apply the parking brake firmly.
2. Turn off unnecessary lights and acces-
sories.
3. Put the selector lever in Pº. If you need to restart the engine while the ve-
hicle is moving, put the selector lever
in Nº. A starter safety device will pre-
vent the starter from operating if the selector lever is in any drive position.
4. Depress the brake pedal and hold it to the floor until driving off.