1998 Lexus LS400 power steering

CHASSIS
238 STEERING
Freeplay
Power steering fluid
Less than 30 mm (1.2 in.)
Automatic transmission fluid DEXRONII or III
TIRES AND WHEELS
Tire size
Tire inflation pressure
Recommended cold tire inflation pressure
Vehicle load up to four occupants
Vehicle loaded up to vehicle capacity weight
Wheel size
Wheel nut torque
P225/60R16 97V
Front 200 kPa (2.0 kgf/cm
2
or bar, 29 psi)
Rear 200 kPa (2.0 kgf/cm2 or bar, 29 psi)
Front 220 kPa (2.2 kgf/cm
2 or bar, 32 psi)
Rear 220 kPa (2.2 kgf/cm2 or bar, 32 psi)
For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add 80 kPa (0.9
kgf/cm
2, 0.8 bar, 12 psi) to the front tires and rear tires, but never
exceed the maximum cold tire pressure molded on the tire
sidewall.
16 x 7 JJ
103 N·m (10.5 kgf·m, 76 ft·lbf.)

CHASSIS
240
CHECKING POWER STEERING
FLUID
63L0021
Check the fluid level on the dipstick. If necessary, add automatic
transmission fluid DEXRONII or III.
If the vehicle has been driven around 80 km/h (50 mph) for 20
minutes (a little more in frigid temperatures), the fluid is hot (60C
8 0C or 140F 175F). You may also check the level when the
fluid is cold (about room temperature, 10C 30C or 50F 85F)
if the engine has not been run for about five hours.
63L0031
1
If cold O.K. 2
If hot O.K. 3
Add fluid
1. Clean all dirt off the reservoir.
2. Remove the filler cap by turning it counterclockwise and wipe the
dipstick clean.
3. Reinstall the filler cap.
4. Remove the filler cap again and look at the fluid level. If the fluid
is cold, the level should be in the ”COLD” range on the dipstick.
Similarly, if it is hot, the fluid level should be in the ”HOT” range.
If the level is at the low side of either range, add automatic
transmission fluid DEXRON
II or III to bring the level within the
range.
5. After replacing the filler cap, visually check the steering box case,
vane pump and hose connections for leaks or damage.

CHASSIS
241
CAUTION
The reservoir may be hot so be careful not to burn yourself.
NOTICE
Avoid overfilling, or the power steering could be damaged.
When adding the power steering fluid, avoid spilling it. The
generator under the power steering reservoir could be
damaged if fluid is spilled on it.
CHECKING TIRE PRESSURE
63L004-1
The recommended cold tire pressures, tire size and the vehicle
capacity weight are given on the label inside the glovebox lid.
You should check the tire pressures every two weeks, or at least once
a month. And don’t forget the spare! The pressure for the spare tire
should be 220 kPa (2.2 kgf/cm
2 or bar, 32 psi). Incorrect tire pressure
can reduce tire life and make your vehicle less safe to drive.
Low tire pressure results in excessive wear, poor handling, reduced
fuel economy, and the possibility of blowouts from overheated tires.
Also, low tire pressure can cause poor sealing of the tire bead. If the
tire pressure is excessively low, there is the possibility of wheel
deformation and/or tire separation. So keep your tire pressures at the
proper level. If a tire needs frequent refilling, have it checked by
your Lexus dealer.

ELECTRICAL COMPONENTS
251
No.FUSEAMPERECIRCUIT
1 TURN7.5Turn signal lights
2 WIPER20Windshield wipers
3 HEATER10
Air conditioning system,
Rear window defogger, Multiport
fuel injection system/sequential
multiport fuel injection system
4 FR FOG15Fog lights
5 ECUIG10Power steering control system,
Charging system,
Vehicle skid control system
6 PWRIG15
Automatic headlight leveling
system, Moon roof,
Headlight cleaner,
Power seat switch,
Tilt and telescopic steering, Shift
lock system
7 GAUGE10
Gauges and meters, service
reminder indicators and warning
buzzers,
Backup lights,
Vehicle skid control system,
Multiport fuel injection
system/sequential multiport fuel
injection system, Automatic
transmission system
8 IGN10SRS, Multiport fuel injection
system/sequential multiport fuel
injection system
9 RR FOG7.5No circuit
10 FUEL OPN10Fuel opener system
No.FUSEAMPERECIRCUIT
11 RR CIG15Rear cigarette lighter,
Power outlet
12 FR CIG15Front cigarette lighter, SRS
13 A/C7.5Air conditioning system
14 P RR
DOOR20Rear door lock,
Rear power window
15 STOP LP25Stop lights,
High mounted stop light
16 RADIO
NO.215
Audio system,
Outside rear view mirror,
Shift lock system,
Air conditioning system
17 PANEL7.5Instrument panel lights,
Air conditioning system, Glovebox
light, Audio system
18 STARTER7.5
Starting system,
Automatic transmission system,
Multiport fuel injection
system/sequential multiport fuel
injection system
19 TAIL7.5Tail lights, Side marker lights,
License plate lights
20 STOPS7.5
Shift lock system,
Height control system, Antilock
brake system,
Vehicle skid control system
21 RR S/HTR15No circuit
22 WASHER20Windshield washer

ELECTRICAL COMPONENTS
252
No.FUSEAMPERECIRCUIT
23 AIR SUS20Height control system
24 D RR
DOOR20Rear door lock,
Rear power window
25 HORN10Horns
26 ETCS15Electronic throttle control system
27 HLP L
UPR10Lefthand headlight (high beam)
28 HLP R
UPR10Righthand headlight (high beam)
29 EFI NO.210Emission control system
30 MIRHTR15Outside rear view mirror defogger
31 FR S/HTR15Seat heater
32 ALTS7.5Charging system
33 TEL15Telephone
34 CRT15Multi information display
35 RADIO
NO.120Audio system
36 MPXB10Power window, Door lock,
Tilt and telescopic steering
37 ECUB7.5Vehicle skid control system,
Daytime running light system
38 HAZ10Emergency flashers
No.FUSEAMPERECIRCUIT
39 EFI NO.120Multiport fuel injection
system/sequential multiport fuel
injection system
40 DOME10Interior light, Vanity lights,
Foot lights, Rear personal light,
Garage door opener
41 OBD7.5Onboard diagnosis system
42 DRL10Vehicles sold in Canada
Daytime running light system
43 HLP R
LW R15Righthand headlight (low beam)
44 HLP L
LW R15Lefthand headlight (low beam)

INDEX (E G)
280
Checking the coolant level 233. . . . . . . . . . . .
Coolant 233. . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant temperature gauge 34. . . . . . . . . . . . .
Emission control device 155. . . . . . . . . . . . . .
Engine compartment 220 . . . . . . . . . . . . . . . . .
Exhaust gas caution 156. . . . . . . . . . . . . . . . . .
Hood release 62. . . . . . . . . . . . . . . . . . . . . . . .
Oil consumption 229. . . . . . . . . . . . . . . . . . . .
Oil level 230. . . . . . . . . . . . . . . . . . . . . . . . . . .
Overheating 196. . . . . . . . . . . . . . . . . . . . . . . .
Spark plugs 226. . . . . . . . . . . . . . . . . . . . . . . .
Starting procedure 159. . . . . . . . . . . . . . . . . . .
Threeway catalytic converter 155. . . . . . . . .
Engine coolant, Winter driving tips 182. . . . . . .
Engine immobiliser system 10. . . . . . . . . . . . . .
Engine oil, Winter driving tips 182. . . . . . . . . . .
Engine coolant temperature gauge 34. . . . . . . . .
Exhaust gas caution 156. . . . . . . . . . . . . . . . . . . F
Facts about engine oil consumption 229. . . . . . .
Flasher, Headlight 5, 24. . . . . . . . . . . . . . . . . . .
Flat tire
After changing wheels 204. . . . . . . . . . . . . . . .
Changing tires 202. . . . . . . . . . . . . . . . . . . . . .
If you have a flat tire 197 . . . . . . . . . . . . . . . . .
Jack point 201. . . . . . . . . . . . . . . . . . . . . . . . .
Jacking precautions 197. . . . . . . . . . . . . . . . . .
Jacking up 201. . . . . . . . . . . . . . . . . . . . . . . . .
Loosening wheel nuts 201 . . . . . . . . . . . . . . . . .
Lowering vehicle 203. . . . . . . . . . . . . . . . . . . .
Reinstalling wheel ornament 204. . . . . . . . . . .
Removing wheel ornament 200. . . . . . . . . . . .
Wheel block 200. . . . . . . . . . . . . . . . . . . . . . .
Wheel nuts 201. . . . . . . . . . . . . . . . . . . . . . . . .
Floor mat 58. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid level
Brake 239. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine coolant 233. . . . . . . . . . . . . . . . . . . . . .
Power steering 240. . . . . . . . . . . . . . . . . . . . . .
Washer fluid 261. . . . . . . . . . . . . . . . . . . . . . .
Fog light 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign countries, Operation in 181. . . . . . . . . . Front seat
Lumbar support 73. . . . . . . . . . . . . . . . . . . . . .
Position 71. . . . . . . . . .
Seat cushion angle and height 72. . . . . . . . . . .
Seatback angle 72. . . . . . . . . . . . . . . . . . . . . . .
Fuel
Filler door opener 65. . . . . . . . . . . . . . . . . . . .
Fuel economy 189. . . . . . . . . . . . . . . . . . . . . .
Fuel information 227. . . . . . . . . . . . . . . . . . . .
Gauge 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MTBE 228. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation in foreign countries 181. . . . . . . . . .
Tank cap 65. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse
Blade type fuses 258. . . . . . . . . . . . . . . . . . . .
Cartridge type fuses 260. . . . . . . . . . . . . . . . . .
Fuse locations 249. . . . . . . . . . . . . . . . . . . . . . . .
Fuse box 220. . . . . . . . . . . . . . . . . . . . . . . . . . . .
G
Garage door opener 54. . . . . . . . . . . . . . . . . . . .
Gas station information Inside back cover. . . . .
Gauge
Engine coolant temperature 34. . . . . . . . . . . . .
Fuel 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glovebox 54. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Good driving practice 166 . . . . . . . . . . . . . . . . . .

INDEX (M Q)
282
M
Maintenance
Doityourself maintenance 221. . . . . . . . . . .
Does your vehicle need repairing? 217. . . . . .
General maintenance 214
Maintenance requirements 213. . . . . . . . . . . .
Parts and tools 222. . . . . . . . . . . . . . . . . . . . . .
Where to go for service? 213. . . . . . . . . . . . . .
Malfunction indicator lamp 39. . . . . . . . . . . . . .
Multi information display 41. . . . . . . . . . . . . . .
Maximum allowable speed 164. . . . . . . . . . . . .
Mirrors
Antiglare inside rear view 79. . . . . . . . . . . . .
Folding rear view 79. . . . . . . . . . . . . . . . . . . .
Outside rear view 77. . . . . . . . . . . . . . . . . . . .
Power rear view 78. . . . . . . . . . . . . . . . . . . . . .
Vanity 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moon roof 66. . . . . . . . . . . . . . . . . . . . . . . . . . .
MTBE 228. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N
New vehicle breakin 181
O
Odometer 36. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil
Checking the engine oil 230. . . . . . . . . . . . . . .
Consumption 229. . . . . . . . . . . . . . . . . . . . . . .
Power steering 240. . . . . . . . . . . . . . . . . . . . . .
Viscosity and grade 232. . . . . . . . . . . . . . . . . .
Opener
Trunk lid 63. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel filler door 65. . . . . . . . . . . . . . . . . . . . . . .
Operation in foreign countries 181. . . . . . . . . . .
Outside rear view mirrors 77. . . . . . . . . . . . . . .
Overheating, Engine 196 . . . . . . . . . . . . . . . . . .
Overview
Engine compartment 220
P
Parking brake
Operation 158. . . . . . . . . . . . . . . . . . . . . . . . . .
Reminder light 37. . . . . . . . . . . . . . . . . . . . . . .
Parts 222. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Personal lights 50. . . . . . . . . . . . . . . . . . . . . . . .
Polishing 271. . . . . . . . . . . . . . . . . . . . . . . . . . .
Power door locks 19. . . . . . . . . . . . . . . . . . . . . .
Power outlet 53. . . . . . . . . . . . . . . . . . . . . . . . . .
Power rear view mirror control 78. . . . . . . . . . .
Power steering fluid level 240. . . . . . . . . . . . . .
Power window switches 28. . . . . . . . . . . . . . . . .
Protecting your Lexus from corrosion 270. . . . .
Q
Quick index Back cover. . . . . . . . . . . . . . . . . . .

INDEX (R S)
283
R
Radiator coolant, Engine 233. . . . . . . . . . . . . . .
Radio 137. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio, FM reception tips 149. . . . . . . . . . . . . . .
Rear door childprotector 19. . . . . . . . . . . . . . .
Rear vents 131. . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear view mirror, Antiglare inside 79. . . . . . . .
Rear view mirrors, Folding 79. . . . . . . . . . . . . .
Rear view mirrors, Outside 77. . . . . . . . . . . . . .
Rear view mirrors, Power 78. . . . . . . . . . . . . . .
Rear window defogger switch 27. . . . . . . . . . . .
Reporting safety defects
for U.S. owners 276. . . . . . . . . . . . . . . . . . . . .
S
Safety
Reporting safety defects
for U.S. owners 276. . . . . . . . . . . . . . . . . . . .
Scrapping of your vehicle Introduction. . . . . . . .
Seats, Seat adjustments 70. . . . . . . . . . . . . . . . .
Seat belt extender 84. . . . . . . . . . . . . . . . . . . . . .
Seat belt pretensioners 86. . . . . . . . . . . . . . . . . .
Seat belt reminder light 38. . . . . . . . . . . . . . . . .
Seat belts
Cleaning 274. . . . . . . . . . . . . . . . . . . . . . . . . .
Fastening 81. . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat belt precautions 80
Seat heater switch 32. . . . . . . . . . . . . . . . . . . . . .
Service and maintenance 213. . . . . . . . . . . . . . .
Service reminder indicators 36. . . . . . . . . . . . . .
Shoulder belt anchor adjustment 83. . . . . . . . . .
Side vents 130. . . . . . . . . . . . . . . . . . . . . . . . . . .
Slip indicator light 173. . . . . . . . . . . . . . . . . . . .
Spare tire 198. . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark plugs 234. . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
Engine 225, 226. . . . . . . . . . . . . . . . . . . . . . . .
Chassis 237, 238. . . . . . . . . . . . . . . . . . . . . . . .
Electrical component 249, 250
Body 269. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS warning light 38. . . . . . . . . . . . . . . . . . . . . Starting
Cold weather 182. . . . . . . . . . . . . . . . . . . . . . .
Engine 159. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump starting 194. . . . . . . . . . . . . . . . . . . . . . .
Steering
Column lock 157. . . . . . . . . . . . . . . . . . . . . . .
Telescopic steering column 76. . . . . . . . . . . . .
Tilt steering wheel 76. . . . . . . . . . . . . . . . . . . .
Sun visors 48. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplemental restraint system (SRS) 86. . . . . . .
Suspension and chassis 247. . . . . . . . . . . . . . . .
Switch
Emergency flasher 31. . . . . . . . . . . . . . . . . . . .
Fog light 25. . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight 5, 22. . . . . . . . . . . . . . . . . . . . . . . . .
Headlight cleaner 5, 27. . . . . . . . . . . . . . . . . .
Headlight dimmer and turn signal 24. . . . . . . .
Ignition 157. . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear window defogger 27. . . . . . . . . . . . . . . .
Windshield wiper and washer 25. . . . . . . . . . .