Specifications & Procedures: Other Lexus RX I

ALL MODELS (EXCEPT LS400 WITH AIR SUSPENSION)

1. Before adjusting wheel alignment, measure riding height. Measure riding height with vehicle on level surface and tires properly inflated. Bounce vehicle several times to allow suspension to settle. (Scheme 1)or (Scheme 2).
2. Visually inspect vehicle for abnormal height difference from front to rear and from side to side. Remove heavy items from passenger and luggage compartments.
3. Measure riding height. See «RIDING HEIGHT SPECIFICATIONS»(ref-4658-S16177432402000071200000) table. If riding height is not within specification, inspect suspension components. Repair or replace as necessary.

Scheme 1

Scheme 2

RIDING HEIGHT SPECIFICATIONS

Scheme 3

1. Set height control switch to NORM position. Bounce vehicle up and down several times to stabilize suspension. Push vehicle forward and backward to settle tires.
2. Block wheels. Place transmission in Neutral. Release parking brake. Start engine. Set height control switch to HIGH position. After one minute, with vehicle height in raised position, set height control switch back to NORM position. Wait 50 seconds and repeat this step again.
3. Measure vehicle riding height. (Scheme 2) See «RIDING HEIGHT SPECIFICATIONS»(ref-4658-S16177432402000071200000) table. If riding height is not as specified, adjust vehicle riding height by rotating height control sensor link.
4. To adjust height control sensor link, loosen 2 lock nuts on height control sensor link. Rotate height control sensor link bolt to adjust length. Length limit adjustment for front height control sensor link is.039" (10 mm). (Scheme 3) NOTE: Rotating height control sensor link bolt one complete turn changes vehicle height about.20" (5 mm).
5. After adjustment, temporarily tighten lock nuts. Measure vehicle riding height. Readjust if necessary. Tighten lock nuts to specification. See «TORQUE SPECIFICATIONS»(ref-4658-S31907717972000071200000). Ensure ball joint and bracket are parallel when tightening lock nuts. (Scheme 3)
6. To adjust rear height, loosen nut on rear height control sensor arm. (Scheme 3) Moving link arm approximately.04" (1.0 mm) changes vehicle ride height by.08" (2.0 mm). After adjustment, temporarily tighten lock nut. Measure vehicle riding height. Readjust if necessary. Tighten lock nut to specification. See «TORQUE SPECIFICATIONS»(ref-4658-S31907717972000071200000)

JACKING & HOISTING

DISABLING AIR SUSPENSION SYSTEM (LS400)

Turn ignition off when jacking or hoisting vehicle. If it is necessary to have ignition on (engine running) when jacking or hoisting vehicle, connect a jumper wire between Data Link Connector No. 2 (DLC2) terminals E 1 and Td. (Scheme 4)and (Scheme 5). Turn ignition switch ON and raise vehicle.

Scheme 4

Scheme 5

FLOOR JACK

Place floor jack on vehicle support points shown. (Scheme 6), (Scheme 7), (Scheme 8) or (Scheme 9).

Scheme 6

Scheme 7

Scheme 8

Scheme 9

EMERGENCY JACKING

Place manufacturer-supplied jack under reinforced support points of sill, between front and rear wheels. Safety stands may also be placed at these points. (Scheme 6)- (Scheme 9).

HOIST

Place lift blocks under reinforced support points of sill, between front and rear wheels. (Scheme 6)- (Scheme 9).

Scheme 10

Scheme 11

1. Inspect tires for wear and proper inflation. Inspect front wheel bearings for looseness. Measure tire runout. Tire runout should not exceed.04" (1.0 mm).
2. Inspect front suspension components for looseness. Ensure front shock absorbers operate properly. Measure vehicle riding height. See «RIDING HEIGHT ADJUSTMENT»(ref-4658-S09983414922000071200000).
3. Remove front wheels. Remove speed sensor clamp. Remove 2 lower shock absorber nuts while leaving bolts in place. Coat threads of nuts with engine oil. Temporarily install lower shock absorber nuts. Adjust camber by pushing or pulling lower side of shock absorber in direction camber adjustment is required. (Scheme 10) See «WHEEL ALIGNMENT SPECIFICATIONS»(ref-4658-S19609126012000071200000). Tighten lower shock absorber nuts to specification. See «TORQUE SPECIFICATIONS»(ref-4658-S31907717972000071200000).
4. If camber is still not within specifications, replace camber adjusting bolts. (Scheme 11) Estimate how much additional camber adjustment will be required and select the proper camber adjusting bolt and exchange selected adjusting bolts for original bolts until camber is within specifications. Adjusting value for set bolts is 6'-30' (.1 degree -.5 degree).

Front Suspension (GS300, GS400, SC300 & SC400)

Note. On SC300 and SC400, front wheel camber and caster are adjusted together.

Measure and record camber and caster. See WHEEL ALIGNMENT SPECIFICATIONS. If adjustment is necessary, remove engine undercover. Remove nut, 2 bolts and front lower suspension arm bracket stay. Loosen adjuster cam bolts. Rotate adjuster cams as necessary. (Scheme 12) Tighten adjuster cam bolts to specification. See TORQUE SPECIFICATIONS.

Scheme 12

Front Suspension (LS400)

1. Inspect tires for wear and proper inflation. Inspect front wheel bearings for looseness. Measure wheel runout. Wheel runout should not exceed .06" (1.4 mm).
2. Inspect front suspension components for looseness. Ensure front shock absorbers operate properly. Measure vehicle riding height. See «RIDING HEIGHT ADJUSTMENT»(ref-4658-S09983414922000071200000) .
3. Measure camber of each front wheel. See «WHEEL ALIGNMENT SPECIFICATIONS»(ref-4658-S19609126012000071200000) . If camber is not within specification, loosen camber adjusting cam nuts. Remove suspension crossmember brace for access if necessary. Turn camber adjusting cam to obtain proper camber adjustment. Tighten adjusting cam nuts to specification. See «TORQUE SPECIFICATIONS»(ref-4658-S31907717972000071200000) . Reinstall suspension crossmember brace.

Rear Suspension (ES300 & RX300)

Inspect tires for wear and proper inflation. Measure camber of both rear wheels. See WHEEL ALIGNMENT SPECIFICATIONS . If camber is not within specification, inspect rear suspension components. Replace any components that are worn or damaged. Rear camber is not adjustable.

Rear Suspension (GS300 & GS400)

Note. On GS300 and GS400, rear wheel camber and toe-in are adjusted together.

1. Inspect tires for wear and proper inflation. Ensure lengths of No. 1 and 2 lower suspension arms are equal by rotating adjuster cams (if necessary). (Scheme 13)
2. Measure camber of each rear wheel. See «WHEEL ALIGNMENT SPECIFICATIONS»(ref-4658-S19609126012000071200000). If camber and/or toe-in are not within specification, loosen adjuster cam bolts. Adjust by rotating adjuster cams. Tighten adjuster cam bolts to specification after adjustment. See «TORQUE SPECIFICATIONS»(ref-4658-S31907717972000071200000).

Scheme 13

Rear Suspension (SC300, SC400 & LS400)

Note. On SC300, SC400 and LS400, rear wheel camber and toe-in are adjusted together.

Measure and record camber and toe-in. See WHEEL ALIGNMENT SPECIFICATIONS. Ensure lengths of No. 1 and 2 lower suspension arms are equal by rotating adjuster cams (if necessary). (Scheme 14) If camber adjustment is still necessary, loosen adjuster cam nuts. Rotate adjuster cams as necessary. Tighten adjuster cam nuts to specification. See TORQUE SPECIFICATIONS.

Scheme 14

Front Suspension (ES300, GS300, GS400 & RX300)

1. Ensure riding height, camber, and steering axis inclination are correct. See «RIDING HEIGHT ADJUSTMENT»(ref-4658-S09983414922000071200000) . Also see «CAMBER ADJUSTMENT»(ref-4658-S01670015172000071200000) and «STEERING AXIS INCLINATION»(ref-4658-S41841119122000071200000) under WHEEL ALIGNMENT PROCEDURES.
2. Measure caster of each front wheel. See «WHEEL ALIGNMENT SPECIFICATIONS»(ref-4658-S19609126012000071200000) . If caster is not within specification, inspect related front suspension components. Replace any components that are worn or damaged. Front caster is not adjustable.

1. Ensure riding height, camber, and steering axis inclination are correct. See «RIDING HEIGHT ADJUSTMENT»(ref-4658-S09983414922000071200000) . Also see «CAMBER ADJUSTMENT»(ref-4658-S01670015172000071200000) and «STEERING AXIS INCLINATION»(ref-4658-S41841119122000071200000) under WHEEL ALIGNMENT PROCEDURES.
2. Measure caster of each front wheel. See «WHEEL ALIGNMENT SPECIFICATIONS»(ref-4658-S19609126012000071200000) . If caster is not within specification, loosen caster adjusting cam nut. Turn caster adjusting cam to obtain correct caster reading. Tighten caster adjusting cam nut to specification. See «TORQUE SPECIFICATIONS»(ref-4658-S31907717972000071200000) .

Front Suspension (SC300 & SC400)

Caster is adjusted together with camber. See CAMBER ADJUSTMENT under WHEEL ALIGNMENT PROCEDURES.

Front Suspension

Ensure riding height, caster and camber are correct. See RIDING HEIGHT ADJUSTMENT . Also see CASTER ADJUSTMENT and CAMBER ADJUSTMENT under WHEEL ALIGNMENT PROCEDURES. If riding height, caster and camber are correct and steering axis inclination is still not as specified, recheck front knuckle for bend or damage and inspect front wheel bearings for looseness.

Front Suspension (All Models)

1. Ensure riding height, camber, steering axis inclination, and caster are correct. See «RIDING HEIGHT ADJUSTMENT»(ref-4658-S09983414922000071200000) . Also see «CAMBER ADJUSTMENT»(ref-4658-S01670015172000071200000) , «STEERING AXIS INCLINATION»(ref-4658-S41841119122000071200000) and «CASTER ADJUSTMENT»(ref-4658-S33543266742000071200000) under WHEEL ALIGNMENT PROCEDURES. Ensure front wheels are in straight-ahead position.
2. Bounce both ends of vehicle several times to settle suspension. Measure toe-in. See «WHEEL ALIGNMENT SPECIFICATIONS»(ref-4658-S19609126012000071200000) . If necessary, adjust toe-in by changing length of tie rods. Length of tie rods must be equal within .04" (1.0 mm) after adjustment on LS400 models, within .06" (1.5 mm) after adjustment on all other models.

Rear Suspension (ES300)

1. Ensure rear camber is correct. See «CAMBER ADJUSTMENT»(ref-4658-S01670015172000071200000) under WHEEL ALIGNMENT PROCEDURES. Bounce both ends of vehicle several times to settle suspension. Adjust lengths of adjuster tubes so both are equal within.04" (1.0 mm). (Scheme 15)
2. Measure toe-in. See «WHEEL ALIGNMENT SPECIFICATIONS»(ref-4658-S19609126012000071200000). If necessary, adjust length of each adjuster tube equally to adjust toe-in.

Scheme 15

Rear Suspension (GS300, GS400, LS400, RX300, SC300 & SC400)

Toe-in is adjusted together with camber. See CAMBER ADJUSTMENT under WHEEL ALIGNMENT PROCEDURES.

TOE-OUT ON TURNS

1. Ensure steering wheel is in straight-ahead position. Raise front of vehicle. Place turning radius gauges beneath front wheels. Lower front of vehicle.
2. Rotate steering wheel fully right and left, observing turning radius on both wheels. See «WHEEL ALIGNMENT SPECIFICATIONS»(ref-4658-S19609126012000071200000) . If toe-out on turns is not within specification, inspect related front suspension components. Replace any components that are worn or damaged.

ES300

WHEEL ALIGNMENT SPECIFICATIONS (ES300)

GS300 & GS400

WHEEL ALIGNMENT SPECIFICATIONS (GS300 & GS400)

LS400

WHEEL ALIGNMENT SPECIFICATIONS (LS400)

RX300

WHEEL ALIGNMENT SPECIFICATIONS (RX300)

SC300 & SC400

WHEEL ALIGNMENT SPECIFICATIONS (SC300 & SC400)