traction control TOYOTA SUPRA 1998 Owners Manual

SUPRA (U)5
Indicator symbols on the instrument panel
Slip indicator light
SRS airbag warning light
*
1
Traction control system off indicator/warning light *
1
Seat belt reminder light
*
1
Open door warning light *
1
Low oil pressure warnig light *
1

Master warning light
*
1
Brake system warning light *
1
Discharge warning light *
1
Malfunction indicator lamp *
1
Snow mode indicator light
Anti-lock brake system warning light *
1
Rear light failure warning light *
1
Low engine oil level warning light *
1

SUPRA (U)101
Part 1
OPERATION OF
INSTRUMENTS
AND CONTROLSÐ
Chapter 1- 8
Other equipment
Clock
Cigarette lighter and ashtray
Glovebox
Auxiliary box
Luggage cover
Traction control system
Floor mat
Clock
The digital clock indicates the time with
the ignition key at the ºACCº or ºONº
position. To reset the hour, depress the
ºHº button. To reset the minutes, de-
press the ºMº button. To adjust the
time to a full hour, depress the º:00º
button.
For example, if the º:00º button is de-
pressed when the time is between
1:01±1:29, the time will change to 1:00. If
the time is between 1:30±1:59, the time
will change to 2:00.
When the instrument panel lights are
turned on, the brightness of the time in-
dication will be reduced.
Once the electrical power source has
been disconnected from the clock, the
time is automatically set to 1:00 (one
o'clock).

SUPRA (U)103
Auxiliary box
To open the box, pull up the strap.
Luggage coverWhen you open the back door, the lug-
gage cover tilt ups for easy access to
the luggage area.
NOTICE
Make sure the luggage cover is surely
stowed.
Traction control system
AUTOMATIC MODE
The traction control system automatical-
ly help control the spinning of the rear
wheels which may occur when acceler-
ating on slippery road surfaces, thus
assisting driver control the driving pow-
er of the rear wheels. When you turn
the ignition switch on, the traction con-
trol system always turns on automati-
cally, and the slip indicator light and
ºSNOWº indicator light will come on.
The indicator lights will go off after
about 3 seconds.

SUPRA (U)
104
Leave the system on during ordinary
driving so that it can operate when
needed. When traction control is ap-
plied, the slip indicator light blinks. If
your vehicle still skids even though
traction control is applied, more power-
ful traction control is applied and the
ºSNOWº indicator light comes on.
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 proper-
ly.
When getting the vehicle out of mud or
new snow, etc. the traction control system
will help operate to prevent the wheels
from spinning.
MANUAL SNOW OPERATION
You can select the snow mode by push-
ing the ºSNOWº switch. The ºSNOWº
indicator light will come on.
To select the automatic mode, push the
ºOFFº switch. The ºSNOWº indicator
light will go off. If your vehicle still
skids, the system automatically oper-
ates.
MANUAL TRACTION CONTROL OFF OP-
ERATION
You can turn off the traction control
system by pushing the ºOFFº switch.
The ºTRAC OFFº indicator/warning light
will come on. Pushing the ºOFFº switch
a second time turns on the traction
control system and the ºTRAC OFFº
indicator/warning light will go off.
If the ºSNOWº indicator light is on,
pushing the ºOFFº switch once selects
the outomatic mode and pushing it a
second time turns off the traction con-
trol system.

SUPRA (U)105
CAUTION
Under certain slippery road condi-
tions, full traction of the vehicle and
power to the rear wheels cannot be
maintained, even though the traction
control system is in operation. Do not
drive the vehicle under any speed or
maneuvering conditions which will
cause the vehicle to lose traction. In
situations where the road surface is
covered with ice or snow, your ve-
hicle should be fitted with snow tires
or tire chains. Always drive at an ap-
propriate and cautions pace.
Floor mat
Use a floor mat of the correct size.
If the floor mat has a hole, then it is
designed for use with a locking clip. Fix
the floor mat and locking clip into the hole
in the floor carpet.CAUTION
Make sure the floor mat is properly
placed on the floor carpet. If the floor
mat slips and interferes with the
movement of the pedals during driv-
ing, it may cause an accident.

SUPRA (U)
168
WHEN TO USE SNOW TIRES OR
CHAINS
Snow tires or chains are recommended
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 the same
size, construction and load capacity 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 w
heels
only can lead to an excessive difference
in road grip capab ility 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.
CAUTION
Do not drive with the snow tires
incorrectly inflated.
Never drive over 120 km/h (75 mph)
with any type of snow tires.
TIRE CHAIN SELECTION
Use the tire chains of correct size and
type.
Use SAE Class ºSº 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 road, so always check them
before installing chains.
NOTICE
Do not install tire chains on the
255/40ZR17 tires, as this could dam-age the vehicle body.
CHAIN INSTALLATION
Install the chains on the rear tires as
tightly as possible. Do not use tire
chains on the front tires. Retighten
chains after driving 0.5Ð1.0 km
(1/4Ð1/2 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 remove
the covers before putting on the chains.
CAUTION
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 may
cause the vehicle to bounce.
Avoid sharp turns or locked- wheel
braking, as use of chains may ad-
versely affect vehicle handling.
Installing snow tires and
chains

SUPRA (U)189
80050F10
80050F08
Fuses (type A) 1. EFI NO.2 30 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system
2. EFI NO.1 30 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system
3. AM2 30 A: Starter system
4. FOG 15 A: Front fog lights
5. HAZ- HORN 15 A: Emergency flashers,
horns
6. TRAC 7.5 A: Traction control system
7. ETCS 15 A: Electronic Traction Control
System
8. ALT- S 7.5 A: Charging system 9. DOME 7.5 A:
Interior lights, personal
lights, door courtesy lights, luggage
compartment light, ignition switch light,
open door warning light, theft deterrent
system
10. RAD NO.1 20 A: Radio cassette tape
player
11. HEAD (RH) 15 A: Right- hand headlight
12. HEAD (LH) 15 A: Left- hand headlight
13. 30 A: Spare fuse
14. 7.5 A: Spare fuse
15. 15 A: Spare fuse
16. WIPER 20 A: Windshield wipers and
washer, rear window wiper and washer
17. HTR 7.5 A: Air conditioning system
18. ST 7.5 A: Starter system
19. IGN 7.5 A: Charging system, discharge
warning light, multiport fuel injection
system/s equential multiport fuel injec-
tion system, SRS airbag system
20. PANEL 10 A: Instrument panel lights,
instrument panel lights control
21. MIR- HTR 10 A: Mirror heaters
22. TURN 7.5 A: Turn signal lights
23. STOP 15 A: Stop lights, cruise control
system cancel device

SUPRA (U)
190
24. CIG 15 A:
Cigarette lighter, air condi-
tioning system, SRS airbag system,
theft deterrent system, shift lock con-
trol system
25. RAD NO.2 7.5 A: Radio, cassette tape
player, power antenna
26. TAIL 10 A: Tail lights, parking lights,
front side marker lights, rear side
marker lights, licence plate lights
27. ECU- IG 10 A: Cruise control system,
anti- lock brake system, power steering,
power antenna, theft deterrent system,
shift lock control system, traction con-
trol system
28. GAUGE 10 A: Gauges and meters, ser-
vice reminder indicators and warning
buzzers (except discharge and open
door warning lights), rear window de-
fogger, charging system, cruise control
system, electronically controlled auto-
matic transmission system, traction
control system
29. ECU- B 10 A: Air conditioning system,
cruise control system, anti- lock brake
system, SRS airbag system, traction
control system
30. OBD - II 7.5A: On- board diagnosis sys-
tem Fuses (type B)
31. DOOR 30 A: Power window, power
door lock system, theft deterrent sys-
tem
32. DEFOG 30 A: Rear window defogger
Fuses (type C)
33. ALT 120 A: Charging system
34. MAIN 50 A: Starter system, headlights
35. HTR 50 A: Air conditioning system
36. FAN 30 A: Electric cooling fans
37. ABS NO.1 60 A: Anti- lock brake sys-
tem, traction control system
38. AM1 50 A: Electronic ignition system/
distributor ignition system
39. POWER 60 A: ºPANELº, ºSTOPº,
ºTAILº, ºECU- Bº, ºDEFOGº and
ºDOORº fuses

SUPRA (U)
192
Uniform tire quality grading
This information has been prepared in ac-
cordance with regulations issued by the
National Highway Traffic Safety Adminis-
tration of the U.S. Department of Trans-
portation. It provides the purchasers and/
or prospective purchasers of Toyota
vehicles with information on uniform tire
quality grading.
Your Toyota dealer will help answer any
questions you may have as you read this
information.
DOT quality gradesÐAll passenger ve-
hicle tires must conform to Federal
Safety Requirements in addition to
these grades. These quality grades are
molded on the sidewall.
Treadwear
ÐThe treadwear grade is a
comparative rating based on the wear rate
of the tire when tested under controlled
conditions on a specified government test
course. For example, a tire graded 150
would wear one and a half (1- 1/2) times
as well on the government course as a
tire graded 100. The relative performance
of tires depends upon the actual condi-
tions of their use, however, and may de-
part significantly from the norm due to
variations in driving habits, service prac-
tices and differences in road characteris-
tics and climate. Traction A, B, C
ÐThe traction grades,
from highest to lowest, are A, B, and C,
and they represent the tire's ability to stop
on wet pavement as measured under con-
trolled conditions on specified government
test surfaces of asphalt and concrete. A
tire marked C may have poor traction per-
formance.
Warning: The traction grade assigned to
this tire is based on braking (straight
ahead) traction tests and does not include
cornering (turning) traction.
Temperature A, B, C ÐThe temperature
grades are A (the highest), B, and C,
representing the tire's resistance to the
generation of heat and its ab ility to dissi-
pate heat when tested under controlled
conditions on a specified indoor laboratory
test wheel. Sustained high temperature
can cause the material of the tire to de-
generate and reduce tire life, and exces-
sive temperature can lead to sudden tire
failure. The grade C corresponds to a lev-
el of performance which all passenger car
tires must meet under the Federal Motor
Vehicle Safety Standard No.109. Grades B
and A represent higher levels of perfor-
mance on the laboratory test wheel than
the minimum required by law. Warning: The temperature grades for this
tire are established for a tire that is prop-
erly inflated and not overloaded. Exces-
sive speed, underinflation, or excessive
loading, either separately or in combina-
tion, can cause heat buildup and possible
tire failure.