differential TOYOTA TACOMA 1998 Owners Manual

'98 Tacoma (U)3
1. Headlight and turn signal switch
2. Wiper and washer switches
3. Emergency flasher switch
4. Passenger airbag cutoff switch
5. Air conditioning controls
6. Car audio
7. Ashtray
8. Cigarette lighter
9. Power outlets
10. Clock
11. Parking brake lever
12. Ignition switch
13. Cruise control switch
14. Rear differential lock button
15. Instrument panel light control knob
16. Clutch start cancel switch (manual transmission) or driving pattern selector
button (automatic transmission)

'98 Tacoma (U)7
*1
: For details, see ºService reminder indicators and warning buzz -
ersº in Chapter 1- 5.
* 2
: If this light flashes, see ºCruise controlº in Chapter 1- 6.
Cruise control indicator light *
2
Rear differential lock indicator light

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72
NOTICE
Do not drive the vehicle with the warning light onÐeven for one block.It may ruin the engine.
(e) Malfunction indicator lamp
This lamp comes on in the following
cases.
a. The fuel tank is completely empty. (See
ºFuel gaugeº in Chapter 1- 5 for instruc-
tions.)
b. The fuel tank cap is not tightened se-
curely. (See ºFuel tank capº in Chapter
1- 2 for instructions.)
c. There is a problem somewhere in your
engine or automatic transmission electrical
system.
If it comes on while you are driving in
case c, have your vehicle checked/re-
paired by your Toyota dealer as soon as
possible. (f) Low Fuel Level Warning Light
This light comes on when the fuel level
in the tank becomes nearly empty. Fill up
the tank as soon as possible.
On inclines or curves, due to the move-
ment of fuel in the tank, the low fuel level
warning light may come on earlier than
usual.
(g) ºABSº Warning Light This light warns that there is a problem
somewhere in your anti-lock brake system.
If the light comes on while you are driv-
ing, have your vehicle checked by your
Toyota dealer as soon as possible.
The light will come on when the ignition
key is turned to the ºONº position. After
a few seconds, the light will go off.
When the ºABSº warning light is on (and
the brake system warning light is off), the
brake system operates conventionally but
anti- lock brake system is not assisting
brake performance so that the wheels can
lock- up during sudden braking or braking
on slippery road surfaces. Vehicles with rear differential lock sys-
temÐ
The anti-lock brake system does not oper-
ate when the rear differential is locked. It
is normal operation for the ºABSº warning
light to be on at this time.
(h) SRS Airbag Warning Light This light will come on when the igni-
tion key is turned to the ºACCº or
ºONº position. After about 6 seconds,
the light will go off. This means the
airbag system is operating properly.
The warning light system monitors the air-
bag sensor assembly, inflator, warning
light, interconnecting wiring and power
sources.
If either of the following conditions occurs,
this indicates a malfunction somewhere in
the parts monitored by the warning light
system. Contact your Toyota dealer as
soon as possible to service the vehicle.
The light does not come on when the
ignition key is turned to the ºACCº or
ºONº position or remains on.
The light comes on while driving.

'98 Tacoma (U)75
Part 1
OPERATION OF
INSTRUMENTS AND
CONTROLSÐ
Chapter 1- 6
Ignition switch,
Transmission
and Parking brake
Ignition switch with steering lock
Automatic transmission
Manual transmission
Four- wheel drive system
Rear differential lock system
P ar k ing br ak e
Cruise control
Clutch start cancel switch
Ignition switch with steering lock
ºSTARTºÐStarter motor on. The key
will return to the ºONº position when
released.
For starting tips, see Part 3.
ºONºÐEngine on and all accessories on.
This is the normal driving position.
ºACCºÐAccessories such as the radio
operate, but the engine is off.
If you leave the key in the ºACCº or
ºLOCKº position and open the driver's
door, a buzzer will remind you to remove
the key.
ºLOCKºÐEngine is off and the steering
wheel is locked. The key can be re-
moved only at this position.
You must push in the key to turn the key
from ºACCº to the ºLOCKº position. On
vehicles with an automatic transmission,
the selector lever must be in the ºPº posi-
tion before pushing the key.
When starting the engine, the key may
seem stuck at the ºLOCKº position. To
free it, first be sure the key is pushed all
the way in, and then rock the steering
wheel slightly while turning the key gently.
CAUTION
For manual transmission:
Never remove the key when the ve-
hicle is moving, as this will lock the
steering wheel and result in loss of
steering control.
NOTICE
Do not leave the key in the ºONº
position if the engine is not running.The battery will discharge and the ignition could be damaged.

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92
Steel wheels
Aluminum wheels The A.D.D. can be engaged or disen-
gaged by the shifting operations de-
scribed in º(d) Shifting procedureº.
You should drive in four-wheel drive for at
least 16 km (10 miles) each month. This
will assure that the front drive components
are lubricated.
SHIFTING BETWEEN ºH2º AND ºH4º
With free-wheeling hubs
To shift from ºH2º to ºH4º,
move the
front drive control lever. Also, engage both
the free-wheeling hubs.
This can be done when the vehicle is
stopped, or moving straight ahead at
speeds of 40 km/h (25 mph) or less. You
need not depress the clutch pedal. If you
have trouble shifting, depress or release
the accelerator pedal momentarily while
pushing the front drive control lever.
CAUTION
Never move the front drive control
lever if wheels are slipping. Stop
the slipping or spinning before
shifting.
Never drive with only one hub en-gaged.
To shift from ºH4º to ºH2º, simply move
the front drive control lever. Also, disen-
gage both the free-wheeling hubs for con-
tinued ºH2º use.
This can be done at any vehicle speed.
You need not depress the clutch pedal.
(c) A.D.D. (automatic
disconnecting differential)
(d) Shifting procedure
(lever type with manual
transmission)

'98 Tacoma (U)
96
To shift from ºH4º to ºH2º,
push the
º4WDº button again to turn it off.
This can be done at any vehicle speed.
If the indicator light does not go off when
you shift the transfer into `'H2º, drive
straight ahead while accelerating or decel-
erating, or drive in reverse. SHIFTING BETWEEN ºH2º OR ºH4º AND
ºL4º
To shift from ºH2º or `'H4º to ºL4º,
stop the vehicle and put the transmission
in ºNº. With your foot holding down the
brake pedal, move the front drive control
lever.
To shift from ºL4º to ºH2º or ºH4º,
stop the vehicle and put the transmission
in ºNº. With your foot holding down the
brake pedal, move the front drive control
lever. When the º4WDº button is pushed
in, the transfer shifts into ºH4º; when the
button is left out, the transfer shifts into
ºH2º.
If the indicator light does not go off when
you shift the transfer into ºH2º, drive
straight ahead while accelerating or decel-
erating, or drive in reverse. Rear differential lock system
The rear differential lock system is pro-
vided for use only when wheel spinning
occurs in a ditch or on a slippery or
ragged surface.
This differential lock system is effective in
case one of the rear wheels is spinning.
Except for Pre Runner models
'
Before using the rear differential lock sys-
tem, first shift the front drive control into
ºL4º with the free-wheeling hubs engaged
to see if it works. If this has no effect,
additionally use the rear differential lock
system.

'98 Tacoma (U)97
CAUTION
Do not use the rear differential lock
in the conditions other than above.
Large steering effort and careful cor-
nering control will be required.
Lock
Unlock
To lock the rear differential, push the
switch.
Be sure to stop the wheels before locking
the differential.
For easy locking, depress the clutch ped-
al, push the lock switch and slowly re-
lease the clutch pedal.
The indicator light will blink when the
switch is turned on. Wait a few seconds
for the system to complete operation. Af-
ter the differential is locked, the light will
stop blinking and remain on.
The anti-lock brake system does not oper-
ate when the rear differential is locked. It
is normal operation for the ºABSº warning
light to be on at this time.
CAUTION
Do not lock the differential until the
wheels have stopped spinning.
Otherwise, the vehicle may move in
an unexpected direction when the
differential lock is engaged, result-
ing in an accident. This may also
lead to possible damage to differen-
tial lock component parts.
Do not drive over 8 km/h (5 mph)
when the differential is locked.
To unlock the differential, push the
switch once again.
Unlock the differential as soon as the ve-
hicle moves out.
For easy unlocking, slightly turn the steer-
ing wheel in either direction while the ve-
hicle is in motion.
When the differential lock is disengaged,
the indicator light will go out.
Except for Pre Runner models '
The differential will also unlock if you shift
the front drive control lever out of ºL4º.
Never forget to turn off the switch after
using this feature.

'98 Tacoma (U)145
Always maintain a safe distance from the
vehicle in front of you. Compared with
vehicles not fitted with an anti-lock brake
system, your vehicle may r
equire 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 differences
in surface height.
CAUTION
Do not use tires other than the
manufacturer 's designated tires, and
do not mix tires or wheels of differ-
ent sizes. You may prevent the anti-
lock brake system from operating at
full effectiveness.
Vehicles with rear differential lock
systemÐ
The anti-lock brake system does not oper-
ate when the rear differential is locked. It
is normal operation for the ºABSº warning
light to be on at this time.
Ty p e A
Ty p e B ºABSº warning light
This light comes on when the ignition key
is turned to the ºONº position. After a few
seconds, the light will go off.
If any of the following conditions occurs,
this indicates a malfunction somewhere in
the parts monitored by the warning light
system. Contact your Toyota dealer as
soon as possible to service the vehicle.
The light does not come on as de-
scribed above, or remains on.
The light comes on while driving.
Vehicles with rear differential lock
systemÐ The light comes on while driving with
the rear differential unlocked.
The light does not comes on with the
rear differential locked.
The system comes into operation with
the rear differential locked.

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154
When driving your vehicle off-road, please
observe the following precautions to en-
sure 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 proper-
ty.
c. Do not enter areas that are closed.
Honor gates, barriers and signs that re-
strict travel.
d. Stay on established roads. When condi-
tions 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
CAUTION
Always observe the following precau-
tions to minimize the risk of serious
personal injury or damage to your ve-
hicle: Drive carefully when off the road.
Do not take unnecessary risks by
driving in dangerous places.
Do not grip the steering wheel
spokes when driving off-road. A
bad bump could jerk the wheel and
injure your hands. Keep both hands
and especially your thumbs on the
outside of the rim.
Always check your brakes for effec-
tiveness immediately after driving in
sand, mud, water or snow.
After driving through tall grass,
mud, rock, sand, rivers, etc., check
that there is no grass, bush, paper,
rags, stone, sand, etc. adhering or
trapped on the underbody. Clear off
any such matter from the under-
body. If the vehicle is used with
these materials trapped or adhering
to the underbody, a breakdown or
fire could occur.
The driver and all passengers
should fasten their seat belts when-
ever the vehicle is moving.
NOTICE
If driving through water, such as
when crossing shallow streams,first check the depth of the waterand the bottom of the river bed for
firmness. Drive slowly and avoiddeep water.
Take all necessary safety measures
to ensure that damage to the en-gine or other components does notoccur.
Water entering the engine air intakewill cause severe engine damage.
Water can wash the grease fromwheel bearings, causing rusting and
premature failure, and may also en-ter the differentials, transmission and transfer case, reducing the gear
oil's lubricating qualities.
Off-road driving pr ecautions
(four-wheel drive models only)

'98 Tacoma (U)
230
CLUTCH
Pedal freeplay, mm (in.):
5Ð15 (0.2Ð0.6)
Fluid type: SAE J1703 or FMVSS No. 116 DOT 3
MANUAL TRANSMISSION
Oil capacity, L (qt., Imp. qt.): 2RZ- FE engine 2.6 (2.7, 2.3)
3RZ- FE engine 2.5 (2.6, 2.2)
5VZ- FE engine Two-wheel drive models 2.6 (2.7, 2.3)
Four-wheel drive models
2.2 (2.3, 1.9)
Oil type: Gear Oil API GL-4 or GL-5
Recommended oil viscosity: SAE 75W- 90 AUTOMATIC TRANSMISSION
Fluid capacity (drain and ref
ill), L (qt.,
Imp. qt.):
Two-wheel drive models2RZ- FE engine Up to 2.4 (2.5, 2.1)
5VZ- FE and 3RZ- FE engines Up to 1.6 (1.7, 1.4)
Four-wheel drive models
Up to 2.0 (2.1, 1.8)
Fluid type: Automatic transmission fluid
D-II or DEXRON III (DEXRON II)
TRANSFER
Oil capacity, L (qt., Imp. qt.): 1.0 (1.1, 0.9)
Oil type:
Gear Oil API GL-4 or GL-5
Recommended oil viscosity:
SAE 75W- 90 DIFFERENTIAL
Oil capacity, L (qt., Imp. qt.):
Two-wheel drive models except
Pre Runner2RZ- FE engine 1.35 (1.4, 1.2)
5VZ- FE engine 2.55 (2.7, 2.2)
Four-wheel drive models and
Pre Runner Front (except Pre- runner) A.D.D. 1.15 (1.2, 1.0)
Except A.D.D. 1.1 (1.2, 1.0)
Rear Short wheel base
With rear differential lock system 2.65 (2.8, 2.3)
Without rear differential lock
system 2.55 (2.7, 2.2)
Extra long wheel base
With rear differential lock system 2.95 (3.1, 2.6)
Without rear differential lock
system 2.45 (2.6, 2.2)
Oil type:
Hypoid Gear Oil API GL- 5