TOYOTA SUPRA 1996 Owners Manual

159
Your Supra has been fitted with specially
developed
tires which provide exceptional
dynamic performance under general road
conditions. However, you may also notice
that your tires wear more rapidly than standard tires as a result of their superiorperformance. The effectiveness of snow tires is lost
if the tread wears down below 4 mm(0.16 in.).
Check the tires regularly for damage
such as cuts, splits and cracks. If anydamage is found, consult with a tech-
nician and have the tire repaired or re- placed. Even if the damage does not appear seri-
ous, a qualified technician should ex-
amine the damage. Objects which havepenetrated the tire may have caused in- ternal damage.
Any tires which are over six years old
must be checked by a qualified techni-
cian even if damage is not obvious.
Tires deteriorate with age even if they
have never or seldom been used.
This also applies to the spare tire and tires
stored for future use. REPLACING YOUR TIRES
When replacing a tire, use only the
same size and construction as origi-
nally installed and with the same or
greater load capacity.
Using
any other size or type of tire may se-
riously affect handling, ride, speedome-
ter/odometer calibration, ground clear-
ance, and clearance between the body
and tires or snow chains.
CAUTION
Do not mix radial, bias belted, or
bias-ply tires on your vehicle. It can cause dangerous handling charac-
teristics, resulting in loss of control.!
Toyota recommends all four tires, or at least both of the front or rear tires be
replaced at a time as a set.
See If you have a flat tireº in Part 4 for tire
change procedure.
When a tire is replaced, the wheel
should always be balanced.
An unbalanced wheel may affect vehicle
handling and tire life. Wheels can get out
of balance with regular use and should
therefore be balanced occasionally.
When replacing a tubeless tire, the air
valve should also be replaced with a
new one.
Do not perform rotation of the tires,
from front to rear or from left to right,
or using the compact spare tire. Per-forming such tire rotation may result
in the tires interfering with the body or
in uneven wear of the tires, so that
steerability of the vehicle is impaired.
Tires with turning direction indicatorÐ
The tire is a uni-directional type and can-not be used for tire rotation. Using the tire
on the opposite side to the designated
side will impair the tire performance. The compact spare tireÐ
The tire is designed for temporary use
only and cannot be used for tire rotation.
Rotating tires

160WHEN TO USE SNOW TIRES OR CHAINS
Snow tires or chains are recom-
mended when driving on snow or ice.
On wet or dry roads, conventional tires
provide better traction than snow tires. SNOW TIRE SELECTION
If you need snow tires, select tires of
the same size, construction and loadcapacity as the original tires on your
Toyota.
Do not use tires other than those men-
tioned above. Do not install studded tires
without first checking local regulations for
possible restrictions.
SNOW TIRE INSTALLATION
Snow tires should be installed on all wheels.
Installing snow tires on the rear wheels
only can lead to an excessive difference
in road grip capability between the front
and rear tires which could cause loss of
vehicle control.
When storing removed tires, you should
store them in a cool dry place.
Mark the direction of rotation and be sure to install them in the same direction when replacing.

Do not drive with the snow tires
incorrectly inflated.
Never drive over 120 km/h (75
mph) with any type of snow tires.
CAUTION!
TIRE CHAIN SELECTION Use the tire chains of correct size and type. Use SAE Class Sº type radial tire chains
except radial cable chains or V-bar type chains.
Regulations regarding the use of tire
chains vary according to location or
type of r oad, so always check them be-
fore installing chains.
Do not install tire chains on the
255/40ZR17 tires, as this could dam-
age the vehicle body.
NOTICE
CHAIN INSTALLATION
Install the chains on the rear tires as
tightly as possible. Do not use tirechains on the front tires. Retighten
chains after driving 0.5 '1.0 km
(1/4 '1/2 mile).
When installing chains on your tires, care-fully follow the instructions of the chain
manufacturer.
If wheel covers are used, they will be
scratched by the chain band, so removethe covers before putting on the chains.
Do not exceed 50 km/h (30 mph) or
the chain manufacturer's recom-
mended speed limit, whichever is
lower.
Drive carefully avoiding bumps,
holes, and sharp turns, which maycause the vehicle to bounce.
Avoid sharp turns or locked-wheel
braking, as use of chains may ad-
versely affect vehicle handling.
CAUTION!
Do not attempt to use a tire chain on
the compact spare tire, as it may
result in damage to the vehicle as well as the tire.
NOTICE
Installing snow tires and chains

161
WHEN TO REPLACE YOUR WHEELS
If you have wheel damage such as
bending, cracks or heavy corrosion,
the wheel should be replaced.
If you fail to replace damaged wheels, the
tire may slip off the wheel or they may cause loss of handling control. WHEEL SELECTION
When replacing wheels,
care should be
taken to ensure that the wheels are re- placed by ones with the same load ca-
pacity, diameter, rim width, and offset. This must be observed on compact spare
tires, too.
Correct replacement wheels are available
at your Toyota dealer.
A wheel of a different size or type may ad-
versely affect handling, wheel and bear-
ing life, brake cooling, speedometer/
odometer calibration, stopping ability,
headlight aim, bumper height, vehicle
ground clearance, and tire or snow chainclearance to the body and chassis. Replacement
with used wheels is not rec-
ommended as they may have been sub-jected to rough treatment or high mileageand could fail without warning. Also, bent
wheels which have been straightened
may have structural damage and there-
fore should not be used. Never use an in-
ner tube in a leaking wheel which is de-
signed for a tubeless tire.
After driving your vehicle the first 1600
km (1000 miles), check that the wheel
nuts are tight.
If you have repaired or changed your
tires, check that the wheel nuts are still
tight after driving 1600 km (1000miles).
When using tire chains, be careful not
to damage the aluminum wheels.
Use only the Toyota wheel nuts and
wrench designed for your aluminumwheels.
When balancing your wheels, use only
Toyota balance weights or equivalent
and a plastic or rubber hammer.
As with any wheel, periodically checkyour aluminum wheels for damage. If
damaged, replace immediately.
Replacing wheels
Aluminum wheel precautions

162

Part 7Checking battery conditionÐ ÐPrecautions
163
DO-IT-YOURSELF MAINTENANCEÐ
Chapter 7-3 Electrical components
Checking battery condition
Battery recharging precautions
Checking and replacing fuses
Adding washer fluid
Checking the headlight aim
Replacing light bulbs
BATTERY PRECAUTIONS
The battery produces flammable
and explosive hydrogen gas.
Do not cause a spark from the bat-
tery with tools.
Do not smoke or light a match near
the battery.
The electrolyte contains poisonous
and corrosive sulfuric acid. Avoid contact with eyes, skin or clothes.
Never ingest electrolyte.
Wear protective safety glasses
when working near the battery.
Keep children away from the bat-
tery.
EMERGENCY MEASURES If electrolyte gets in your eyes,
flush your eyes with clean water
for at least 15 minutes and get im-
mediate medical attention. If pos-
sible, continue to apply water with
a sponge or cloth while en route to
the medical office.
If electrolyte gets on your skin,
thoroughly wash the contact area.
If you feel pain or burning, get
medical attention immediately. CAUTION
!
If electrolyte gets on your clothes,
there is a possibility of its soaking
through to your skin, so immedi- ately take off the exposed cloth-
ing and follow the procedure
above, if necessary.
If you happen to swallow electro-
lyte, drink a large quantity of wa-
ter or milk. Follow with milk of
magnesia, beaten raw egg or veg-
etable oil. Then go immediately
for emergency help.

164
Check the battery for corroded or
loose terminal connections, cracks, or
loose hold-down clamp.
a. If the battery is corroded, wash it off with a solution of warm water and baking
soda. Coat the outside of the terminals with grease to prevent further corrosion.
b. If the terminal connections are loose, tighten their clamp nutsÐbut do not over-
tighten.
c. Tighten the hold-down clamp only
enough to keep the battery firmly in place.
Overtightening may damage the battery case.
NOTICE
Be sure the engine and all acces-
sories are off before performing
maintenance.
When checking the battery, re-move the ground cable from the
negative terminal (-º mark) first
and reinstall it last.
Be careful not to cause a short cir-cuit with tools.
Take care no solution gets into thebattery when washing it.
There are two types of batteries: main-
tenance type and non-maintenance type. A non-maintenance battery has MAIN-
TENANCE FREE BATTERYº on its top. A
maintenance type battery does not havesuch indication. Maintenance type batteryÐ Check the fluid condition by the fluid level
lines on the side of the battery. Or if the
battery has a hydrometer on its top, you
can also check the hydrometer. Non-maintenance batteryÐ
Check the battery condition by the
hydrometer on the top of the battery.
ÐChecking battery exterior
ÐChecking battery fluid

165
CHECKING BY THE FLUID LEVEL
LINES (MAINTENANCE TYPE BAT-
TERY ONLY)
The fluid (electrolyte) level must be be-
tween the upper and lower lines.
When checking the fluid level, look at all six cells, not just one or two.
If the level is lower than the lower line, add
distilled water. (See ADDING DIS-
TILLED WATERº.)CHECKING BY THE HYDROMETER Check the battery condition by the
hydrometer color. Maintenance type batteryHydrometer color
ConditionType AType BCondition
GREENBLUEGood
DARKWHITECharging necessary. Have battery checked
by your Toyota dealer.
CLEAR or LIGHT YELLOWREDAdd distilled water*
*: See ADDING DISTILLED WATERº. Non-maintenance battery
Hydrometer color
ConditionType AType BCondition
GREENBLUEGood
DARKWHITECharging necessary. Have battery checked
by your Toyota dealer.
CLEAR or LIGHT YELLOWREDHave battery checked
by your Toyota dealer.
NOTICE
Do not refill the battery with water.

166
ADDING DISTILLED WATER (MAINTE-
NANCE TYPE BATTERY ONLY)
1. Remove the vent plugs.
2. Add distilled water to cells needing fluid.
If the side of your battery is covered,
check the water level by looking down di-
rectly above the cell as illustrated above.
3. Retighten the vent plugs securely.
NOTICE
Do not overfill the cells. Excess electrolyte could squirt out of the
battery during heavy charging,causing corrosion or damage.
During recharging, the battery is pro-
ducing hydrogen gas. Therefore, before recharging:
1. Maintenance type batteriesÐRemove the vent plugs.
2. If recharging with the battery installed on the vehicle, be sure to disconnect theground cable.
3. Be sure the power switch on the re-
charger is off when connecting the char-ger cables to the battery and when dis-
connecting them.
Always charge the battery in an
unconfined area. Do not charge
the battery in a garage or closed
room where there is not sufficient ventilation.
Non-maintenance batteries: Only
do a slow charge (5A or less).
Charging at a quicker rate is dan- gerous. The battery may explode,
causing personal injuries.
Maintenance type batteries: Be sure to remove the vent plugs be- fore recharging. CAUTION
!
NOTICE
Never recharge the battery while the
engine is running. Also, be sure all
accessories are turned off.
Battery recharging precautions

167
If the headlights or other electrical
components do not work, check the
fuses. If any of the fuses are blown,
they must be replaced.
See Fuse locationsº in Chapter 7-1 for
locations of the fuses.
Turn the ignition switch and inopera-
tive component off. Pull a suspected
fuse straight out and check it. Determine which fuse may be causing the
problem. The lid of the fuse box shows the name of the circuit for each fuse. See Part8 of this manual for the functions con-
trolled by each circuit.
Type A fuses can be pulled out by using the pull-out tool. If you are not sure whether the fuse has
blown, try replacing the suspected fuse with one that you know is good.
If the fuse has blown, push a new fuse
into the clip.
Only install a fuse with the amperage rat-
ing designated on the fuse box lid.
If you do not have a spare fuse, in an
emergency you can pull out the CIGº,
RAD NO.2º, DOMEº or HTRº fuse,
which
may be dispensable for normal driv-
ing, and use it if its amperage rating is the
same. If you cannot use one of the same amper-
age, use one that is lower, but as close as
possible to, the rating. If the amperage is
lower than that specified, the fuse might
blow out again but this does not indicate
anything wrong. Be sure to get the correct
fuse as soon as possible and return the
substitute to its original clip.
It is a good idea to purchase a set of spare
fuses and keep them in your vehicle for emergencies.
If the new fuse immediately blows out, there is a problem with the electrical sys-
tem. Have your Toyota dealer correct it as
soon as possible.
Checking and replacing fuses

168
Never use a fuse with a higher am-
perage rating, or any other object, in
place of a fuse. This may cause ex-
tensive damage and possibly a fire.CAUTION
!
If any washer does not work, the wash-
er tank may be empty. Add washer fluid.
You may use plain water as washer fluid.
However, in cold areas where tempera-
tures range below freezing point, use
washer fluid containing antifreeze. This
product is available at your Toyota dealer
and most auto parts stores. Follow the
manufacturer 's directions for how much
to mix with water.
NOTICE
Do not use engine antifreeze or any other substitute because it may
damage your vehicle's paint.
Before checking the headlight aim:
1. Be sure that the body around the head-
light is not deformed.
2. Park the vehicle on a level spot.
3. The driver gets into the driver's seat
and puts the vehicle in a state readying fora driving (with a full tank).
4. Bounce the vehicle several times.
Adding washer fluid Checking the headlight aim