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Lexus GS300 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Lexus REPAIR SHOPS DON'T WANT YOU TO KNOW

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about Lexus GS300 car and truck repair procedures including Lexus engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your Lexus GS300 automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Lexus mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your Lexus GS300 vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR Lexus GS300 AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported Lexus GS300 cars and light trucks from 1990+

Lexus -> Component Replacement & Adjustment -> Thermostat, Replace -> ES 300 & RX 300 -> GS 300 & IS 300 -> GS 430, LS 430 & SC 430 -> GX 470 & LX 470
Vehicle: 2004 Lexus GS300 3.0 L6 GAS

ES 300 & RX 300

  • Drain engine coolant.
  • Remove air cleaner assembly, tag all hoses for installation reference.
  • Disconnect heater hose, hydraulic motor hose.
  • Disconnect engine electrical wire from water inlet, then disconnect engine coolant temperature sensor electrical connection.
  • Disconnect water inlet hose from water inlet and cylinder head.
  • Remove water inlet, then thermostat and gasket, Fig. .
  • Reverse procedure to install. Torque water inlet nuts to 69 inch lbs.

GS 300 & IS 300

  • Drain engine coolant.
  • Remove t...

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BRAKE SERVICE PROCEDURES FOR Lexus GS300 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported Lexus GS300 cars and light trucks from 1990+.

Lexus -> Hydraulic Brake Systems -> Brake System Bleed -> Brake Lines -> Except LX470 -> Master Cylinder -> Traction Control (TRAC) System
Vehicle: 2004 Lexus GS300 3.0 L6 GAS

Master Cylinder

  • Fill reservoir with fluid.
  • Disconnect tubes from master cylinder. Then slowly depress brake pedal and hold.
  • Block off outlet holes with fingers and release pedal. Repeat three or four times.

Brake Lines

Bleed wheel with longest brake line first, then work back to the master cylinder according to brake line length.

  • Connect tube to brake cylinder.
  • Depress pedal several times and hold, then loosen bleeder plug with pedal still held down.
  • When fluid stops coming out, tighten bleeder plug and release pedal. Repeat several times.
  • Repeat entire...

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FUEL FILTER REPLACEMENT PROCEDURES FOR Lexus GS300 AUTOMOBILES

Fuel filter replacement procedures with corresponding images for most domestic and imported Lexus GS300 cars and light trucks sold in the U.S. for 1980+.

Lexus -> Fuel Filter Replacement -> GS430, LS430, SC430 & 1998-06 GS300 -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2001 Lexus GS300 3.0 L6 GAS

Fuel System Pressure Relief

  • Remove the rear seat cushion.
  • Remove the carpeting to access floor service hole cover.
  • Disconnect the fuel pump electrical connector.
  • Start the engine and let it idle until it stalls, then turn ignition OFF.
  • Disconnect the battery ground cable.

Removal & Installation

Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtu...

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR Lexus GS300 AUTOMOBILES

Includes CV axle, universal joint, and driveline replacement, for domestic and imported Lexus GS300 cars and light trucks from 1990+.

CV AXLE SHAFT, Replace
Vehicle: 1993 Lexus GS300 3.0 L6 GAS

  • Raise and support vehicle, then remove rear wheel and tire assembly.
  • Remove exhaust pipe.
  • Remove cotter pin, locknut cap and center locknut.
  • Place matchmarks on driveshaft and side gear shaft, Fig. . Do not use a punch to mark matchmarks.
  • Remove six hexagon bolts and two washers while depressing brake pedal, Fig. .
  • Hold inboard joint side...

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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR Lexus GS300 AUTOMOBILES

Description, component locations, reset procedures, relearn procedures, diagnosis and testing, wiring diagrams, component replacement, and identification of vehicles equipped and not equipped with tire pressure monitoring system for most domestic and imported Lexus GS300 cars and light trucks sold in the U.S. from mid 1990's+.

Component Replacement -> Installation -> Removal -> Tire Pressure Sensor & Transmitter -> TPMS ECU -> TPMS Receiver
Vehicle: 2006 Lexus GS300 3.0 V6 GAS

Tire Pressure Sensor & Transmitter

If installing a replacement tire pressure sensor and transmitter, note the identification number for use during registration. Refer to the Registration under the "Relearn Procedures."

Removal
  • Loosen the wheel lug nuts.
  • Raise and support vehicle with jack stands.
  • Remove the wheel and tire assembly.
  • Remove the tire valve stem cap, then the valve stem core and allow the tire to deflate, Fig. .
  • Remove the nut retaining the tire pressure sensor and transmitter to the wheel assembly, then drop the transmitter inside the tire.
  • Using a suitable tire change...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR Lexus GS300 AUTOMOBILES

Includes starter and alternator replacement procedures for domestic and imported Lexus GS300 cars and light trucks from 1990+.

Alternator, Replace
Vehicle: 2003 Lexus GS300 3.0 L6 GAS

  • Disconnect battery ground cable.
  • Remove engine under cover.
  • Remove drive belt.
  • Disconnect alternator electrical connector.
  • Remove rubber cap and nut, then disconnect alternator wire.
  • Remove...

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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR Lexus GS300 AUTOMOBILES

Cabin air filter locations and replacement procedures with corresponding images for most domestic and imported Lexus GS300 cars and light trucks sold in the U.S. as equipped to the current model year.

Cabin Air Filter Service -> Lexus -> 1998-2001 GS300, GS400 & GS430
Vehicle: 2000 Lexus GS300 3.0 L6 GAS

The cabin air filter should be replaced every 30,000 miles or 24 months. If the vehicle is operated primarily in urban areas with high concentrations of soot and diesel powered vehicles, replace the filter every 15,000 miles. The filter should be replaced more often if air flow is less than normal.

  • Disconnect and isolate the battery ground cable. After disconnecting the battery ground cable wait at least 90 seconds to allow the air bag system backup power discharge.
  • Remove glove compartment to instrument panel attaching bolts....

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MAINTENANCE LAMP RESET PROCEDURES FOR Lexus GS300 AUTOMOBILES

Maintenance lamp reset procedures with corresponding images for most domestic and imported Lexus GS300 cars and light trucks sold in the U.S. from 1990+.

Lexus -> Air Bag Warning Lamp -> 1993-2000 GS300
Vehicle: 1994 Lexus GS300 3.0 L6 GAS

The air bag system warning lamp warns of air bag system faults. The lamp will be lit when the ignition switch is placed in the Accessory or On positions, but should go out when the self-diagnostic system determines that no faults are present. If the lamp remains lit or flashes, a system fault is indicated. Air bag system diagnosis and repair procedures must be completed before the warning lamp can be reset.

Reset warning lamp as follows:

  • Connect service wires to check connec...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR Lexus GS300 AUTOMOBILES

Includes radiator, cooling and heater hose replacement procedures for domestic and imported Lexus GS300 cars and light trucks from 1990+

Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1997 Lexus GS300 3.0 L6 GAS

Inlet

  • Disconnect battery ground cable.
  • Drain cooling system into a suitable container by loosening drain plug of radiator.
  • Reposition hose clamp at heater core.
  • Remove hose from heater core.
  • Reposition hose clamp at thermostat housing.
  • Remove hose from thermostat housing.
  • Remove hose from vehicle.
  • Reverse procedure t...

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SERPENTINE BELT SERVICE PROCEDURES FOR Lexus GS300 AUTOMOBILES

Serpentine belt replacement procedures with corresponding images for most domestic and imported Lexus GS300 cars and light trucks sold in the U.S. from 1990+.

Serpentine Drive Belt, Replace
Vehicle: 1995 Lexus GS300 3.0 L6 GAS

  • Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...

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COMPONENT LOCATION DIAGRAMS FOR Lexus GS300 AUTOMOBILES

Component location diagrams for most Lexus GS300 cars and light trucks sold in the U.S. from 1990+.

Combination Meter Component Locations Diagram for 1996 Lexus GS300  3.0 L6 GASCombination Meter Component Locations Diagram for 1996 Lexus GS300 3.0 L6 GAS

Components on diagram:
  • Speed Sensor
  • Ignition Switch
  • Parking Brake Switch
  • Combination Meter
  • Brake Fluid Level Warning Switch
  • Ground Electrical Wiring Routing and Splices Diagram for 2001 Lexus GS300  3.0 L6 GASGround Electrical Wiring Routing and Splices Diagram for 2001 Lexus GS300 3.0 L6 GAS

    Components on diagram:
  • Floor No. 1 Wire
  • Seat Wire
  • Floor No. 2 Wire
  • Code B6
  • Code BC1
  • CLICK HERE TO GET FULL ACCESS TO Lexus GS300 PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR Lexus GS300 AUTOMOBILES

    OEM drawn wiring diagrams for most Lexus GS300 cars and light trucks sold in the U.S.

    1999 Lexus GS300  3.0 L6 GAS Wiring Diagram1999 Lexus GS300 3.0 L6 GAS Wiring Diagram

    Components on diagram:
  • Battery
  • Ignition Switch
  • Shift Lock Engine Control Unit
  • Navigation Engine Control Unit
  • 2004 Lexus GS300  3.0 L6 GAS Wiring Diagram2004 Lexus GS300 3.0 L6 GAS Wiring Diagram

    Components on diagram:
  • Battery
  • Ignition Switch
  • Headlight Cleaner Motor
  • Front Height Control Sensor
  • Headlight Beam Level Control Motor
  • CLICK HERE TO GET FULL ACCESS TO Lexus GS300 WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR Lexus GS300 AUTOMOBILES

    OEM TSB listings for most Lexus GS300 cars and light trucks sold in the U.S. from 1985+.

    Document: NEW SEAT BELT TONGUE PLATE STOPPER SERVICE PARTS
    Vehicle: 1999 Lexus GS300 3.0 L6 GAS

    Auto Systems:
  • Seats, Belts, Interior Trim, Carpets, Air Bags
  • Document: DISCONNECT BATTERY & PERFORM ZERO POINT CALIBRATION AFTER WHEEL ALIGNMENT ADJUSTMENT
    Vehicle: 1998 Lexus GS300 3.0 L6 GAS

    Auto Systems:
  • Brakes, Power Brakes, Traction Control
  • CLICK HERE TO GET FULL ACCESS TO Lexus GS300 TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR Lexus GS300 AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most Lexus GS300 cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most Lexus GS300 cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most Lexus GS300 cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most Lexus GS300 cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO Lexus GS300 SPECIFICATIONS DATA!

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    Click here to view more details about 2006 Lexus GS300 Antenna2006 Lexus GS300 Antenna, 1-section mast; 470 mm extension; Stick-on; A high quality universal imitation antenna; May require modification or other adjustment to your vehicle upon installation..

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    Click here to view more details about 1997 Lexus GS300 Throttle Position Sensor1997 Lexus GS300 Throttle Position Sensor, Blade type; 4-prong male terminal; A high quality, OE replacement throttle position sensor; Backed by 1-year, unlimited-mileage warranty..

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    $75.21

    Click here to view more details2005 Lexus GS300 Driver Side Front Side Marker Light Assembly, Driver Side Front Side Marker Light Assembly, , .

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    Click here to view more details2005 Lexus GS300 L6, 3.0 L, 181 CID Rebuilt Engine, Warranty: 3-Year/100,000 Mile, .

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    Click here to view more details2000 Lexus GS300 Used Parking Lamp, Passenger Side, R, Side Marker; (bumper mounted), R., Very Good.

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    Click here to view more details2006 Lexus GS300 Used Parking Lamp, Passenger Side, Fog/Driving; (bumper mtd), R., Average.

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