1997 TOYOTA TACOMA ECU

129

Four-wheel drive modelsÐToyota
recommends not using four-wheel
drive on dry hard-surfaced roads, be-
cause four-wheel driving will cause unnecessary noise and wear, and poor
fuel economy.
Four-wheel drive modelsÐIn cold
temperatures, noise may occur when
driving in two-wheel drive before the
transfer is warmed up. Therefore, first
drive in four-wheel drive until the
transfer is warmed up.
CAUTION
Before driving off, make sure that the parking brake if fully released
and the parking brake reminder
light is off.
Do not leave your vehicle unat-
tended while the engine is running.
Do not rest your foot on the brake
pedal while driving. It can cause
dangerous overheating, needless
wear, and poor fuel economy.
Be careful when accelerating, up-
shifting, down shifting or braking
on a slippery surface. Sudden ac-
celeration or engine braking, could cause the vehicle to spin or skid.!
To drive down a long or steep hill, reduce your speed and downshift.
Remember, if you ride the brakes
excessively, they may overheat and
not work properly.
Do not drive in excess of the speed
limit. Even if the legal speed limit
permits it, do not drive over 140
km/h (85 mph) unless your vehicle
has high-speed capability tires.
Driving over 140 km/h (85 mph) may
result in tire failure, loss of control
and possible injury. Be sure to con-
sult a tire dealer to determine
whether the tires on your vehicle
are high-speed capability tires or
not before driving at such speeds.
Do not continue normal driving
when the brakes are wet. If they are
wet, your vehicle will require a lon-ger stopping distance, and it may
pull to one side when the brakes are
applied. Also, the parking brake
will not hold the vehicle securely. When driving your vehicle off-road,
please observe the following precautions
to ensure your driving enjoyment and to
help prevent the closure of areas to off-
road vehicles.
a. Drive your vehicle only in areas where
off-road vehicles are permitted to travel.
b. Respect private property. Get owner's
permission before entering private prop-
erty.
c. Do not enter areas that are closed.
Hon-
or gates, barriers and signs that restrict travel.
d. Stay on established roads. When con-
ditions are wet, driving techniques should
be changed or travel delayed to prevent
damage to roads.
For owners in U.S. mainland, Hawaii and Puerto Rico:
To obtain additional information pertaining
to driving your vehicle off-road, consult the following organizations. State and Local Parks and Recreation Departments
State Motor Vehicle Bureau
Recreational Vehicle Clubs
U.S. Forest Service and Bureau of
Land Management
Off-road driving precautions (four-wheel drive models only)

133
The trailer cargo load should be
distributed so that the tongue load
is 9 to 11% of the total trailer weight,
not exceeding 158 kg (350 lb.).
However, if towing with a fifth
wheel trailer, the cargo load must be distributed so that the tongue-
load is 19 to 21 % of the total trailer
weight. Never load the trailer with
more weight in the back than in the front. About 60 % of the trailer load
should be in the front half of the
trailer and the remaining 40 % in the
rear. HITCHES
Use only a weight carrying hitch de-
signed for the total trailer weight. Toyo-
ta does not recommend using a weight
distribution (load equalizing) hitch.
The hitch must be bolted securely to
the vehicle frame and installed accord-
ing to the hitch manufacturer's instruc- tions.
If using a fifth wheel hitch, the center
of the king pin must be forward of the
axis of the vehicle's rear wheels, and
installed according to the manufactur-
er's instructions.
The hitch ball and king pin should have a light coat of grease.
Toyota recommends that the trailer
hitch, except fifth wheel hitch, be re-moved when not towing to prevent in- jury and/or damage by the hitch in
event of a rear end collision. After re-moving the hitch, the installation area
should be sealed to prevent entry of exhaust fumes and mud.
Do not use an axle-mounting hitch
as it may cause damage to the axle
housing, wheel bearings, wheelsand/ or tires.
NOTICE
BRAKES AND SAFETY CHAINS Toyota recommends trailers with brakes that conform to any applicable
federal and state/provincial regula- tions.
A safety chain must always be used
between the towing vehicle and the
trailer. Leave sufficient slack in the
chain for turns. The chain should cross
under the trailer tongue to prevent thetongue from dropping to the ground in
case it becomes damaged or sepa-
rated. For correct safety chain proce-
dures, follow the hitch or trailer
manufacturer 's recommendations.
CAUTION
If the total trailer weight exceeds
453 kg (1000 lb.), trailer brakes are required.
Never tap into your vehicle's hy-
draulic system as it would lower its
braking effectiveness.!

134
Never tow a trailer without using a
safety chain securely attached to
both the trailer and the vehicle. If
damage occurs to the coupling
unit or hitch ball, there is danger of
the trailer wandering over into
another lane.
TIRES Ensure that your vehicle's tires are
properly inflated.
The trailer tires should be inflated to
the pressure recommended by the
trailer manufacturer in respect to the
total trailer weight.
TRAILER LIGHTS Trailer lights must comply with federal,
state/provincial and local regulations. See your local recreational vehicle
dealer or rental agency for the correct type of wiring and relays for your trail-
er. Check for correct operation of the
turn signals and stop lights each time
you hitch up. Direct splicing may dam-
age your vehicle's electrical system
and cause a malfunction of your lights. BREAK-IN SCHEDULE
Toyota recommends that you do not
tow a trailer with a new vehicle or a ve-
hicle with any new power train compo-
nent (engine, transmission, differen- tial, wheel bearing, etc.) for the first
800 km (500 miles) of driving.
MAINTENANCE If you tow a trailer, your vehicle will re-
quire more frequent maintenance due
to the additional load. For this informa-
tion, please refer to the scheduled
maintenance information in the Own-
er 's Manual Supplement/Maintenance Scheduleº.
Retighten all fixing bolts of the towing
ball and bracket after approximately
1000 km (600 miles) of trailer driving.
PRE-T OWING SAFETY CHECK Check that your vehicle remains level
when a loaded or unloaded trailer is
hitched. Do not drive if the vehicle has
an abnormal nose-up or nose-down
condition, and check for improper
tongue load, overload, worn suspen-
sion or other possible causes.
Make sure the trailer cargo is securely
loaded so that it cannot shift.
Check that your rear view mirrors con-
form to any applicable federal, state/
provincial or local regulation. If not,
install the rear view mirrors required
for towing purpose.
TRAILER TOWING TIPS
When towing a trailer, your vehicle will
handle differently than when not tow- ing. The three main causes of vehicle
trailer accidents are driver error, ex-
cessive speed and improper trailer
loading. Keep these in mind when tow-
ing: Before starting out, check operation of
the lights and all vehicle-trailer con-
nections. After driving a short dis-
tance, stop and recheck the lights and
connections. Before actually towing a
trailer, practice turning, stopping and
backing with a trailer in an area away
from traffic until you learn the feel.

145
Turn the jack joint by hand.
To remove: turn the joint in direction 1 until the jack is free.
To store: turn the joint in direction 2 until the jack is firmly secured to prevent it fly-
ing forward during a collision or suddenbraking.To remove the spare tire:
1. Insert the end of the jack handle intothe lowering screw and turn it counter- clockwise.
2. After the tire is lowered completely to the ground, remove the holding brack-et.
When storing the spare tire, put it in placewith the outer side of the wheel facing up.Then secure the tire taking care that the
tire goes straight up without catching on
any other part, to prevent it from flying for-ward during a collision or sudden braking.1. Get the required tools and spare tire.
1 Tool bag
2 Jack
To prepare yourself for an emergency, you should familiarize yourself with the
use of the jack, each of the tools and theirstorage locations.
ÐRequired tools and spare tire (Xtra-cab models)

146
Turn the jack joint by hand.
To remove: Turn the joint in direction 1 un- til the jack is free.
To store: Turn the joint in direction 2 until
the jack is firmly secured to prevent it fly-
ing forward during a collision or suddenbraking.To remove the spare tire:
1. Insert the end of the jack handle exten-
sion into the lowering screw and turn it
counterclockwise with the handle,
making sure the handle remains firmly
fitted onto the jack handle extension.
2. After the fire is lowered completely to the ground, remove the holding brack- et.
When storing the spare tire, put it in place with the outer side of the wheel facing up.
Then secure the tire, taking care that thetire goes straight up without catching on
any other part, to prevent it from flying for- ward during a collision or sudden braking.2. Block the wheel diagnoally oppo- site the flat tire to keep the vehicle from rolling when it is jacked up.
When blocking the wheel, place a wheel
block from the front for the front wheels or
from the rear for the rear wheels.
ÐBlocking the wheel

150
8. Reinstall all the wheel nuts fingertight.
Reinstall the wheel nuts (tapered end in-
ward) and tighten them as much as youcan by hand. Press back on the tire back and see if you can tighten them more.Two-wheel drive models
Four-wheel drive models 9. Lower the vehicle completely and
tighten the wheel nuts.
Turn the jack handle counterclockwise to lower the vehicle.
Xtra-cab modelsÐTurn the jack handle
extension counterclockwise with handle
to lower the vehicle, making sure the han-dle remains firmly fitted onto the jack han-
dle extension. Use only the wheel nut wrench to tighten the nuts. Do not use other tools or any
additional leverage other than your
hands, such as a hammer, pipe or your
foot. M ake sure the wrench is securely en-
gaged over the nut.
Tighten each nut a little a time in the order
shown. Repeat the process until all the
nuts are tight.
When lowering the vehicle, make sure all portions of your body and
all other persons around will not be
injured as the vehicle is lowered tothe ground. CAUTION
!
ÐLowering your vehicle
ÐReinstalling wheel nuts

151
10. Reinstall the wheel ornament.
1. Put the wheel ornament into position.
On some models, align the cutout of the
wheel ornamant with the valve stem as shown.
2. Then tap it firmly with the side or heelof your hand to snap it into place.
Take due care in handling the
ornament to avoid unexpected
personal injure. CAUTION
!
On steel wheel ornaments for free-wheel-
ing hubs, place the wheel ornament re-
placer over to snap the ornament into
place. Be careful not to
slip off the replac-
er. 11. Check the air pressure of the re-
placed tire.
Adjust the air pressure to the specification
designated in Part 8. If the pressure is
lower, drive slowly to the nearest service station and fill to the correct pressure.
Do not forget to reinstall the tire inflation valve cap as dirt and moisture could get into the valve core and possibly cause air
leakage. If the cap is missing, have a new
one put on as soon as possible.
12. Restow all the tools, jack and flat
tire securely.
As soon as possible after changing
wheels, tighten the wheel nuts to the torque specified in Part 8 with a torque wrench, have a technician repair the flat tire.
Before driving, make sure all the
tools, jack and flat tire are securely in place in their storage location to
reduce the possibility of personal
injury during a collision or suddenbraking. CAUTION
!
ÐReinstalling wheel ornament
ÐAfter changing wheels

155
Towing in this manner may be done only
on hard-surfaced roads for a short dis-
tance and at low speeds. Also, the
wheels, axles, drive train, steering and brakes must all be in good condition.
CAUTION!
Use extreme caution when towing
vehicles. Avoid sudden starts or
erratic driving maneuvers which
would place excessive stress on the
emergency towing eyelet and
towing cable or chain. The eyelet
and towing cable or chain may break and cause serious injury or damage.
NOTICE
Use only a cable or chain specific- ally intended for use in towing
vehicles. Securely fasten the cableor chain to the towing eyelet provided.
Before towing, release the parking brake
and put the transmission in neutral
(manual) or Nº (automatic). The key must
be in ACCº (engine off) or ONº (engine running).
CAUTION!
If the engine is not running, the
power assist for the brakes and
steering will not work so steering
and braking will be much harder
than usual.
If towing is necessary, we recommend
you to have it done by your Toyota
dealer or a commercial tow truck ser-vice.
If towing service is not available in an
emergency, your vehicle may be tem-
porarily towed by a cable or chain se-
cured to the emergency towing hook
under the front of the vehicle. Use ex-
treme caution when towing the ve-hicle.
A driver must be in the vehicle to steer it and operate the brakes.
ÐEmergency towing (four-wheel drive models)