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2003 Lexus GS300 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Lexus REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2003 Lexus GS300 AUTOMOBILES
Import Compressor Service -> Nippondenso Compressor -> Compressor Seal, Replace
Vehicle: 2003 Lexus GS300 3.0 L6 GAS
- Remove felt oil seal, Fig. .
- Remove snap ring using suitable snap ring pliers.
- Remove key from shaft using suitable tools, then apply compressor oil to inner bore of compressor.
- Remove sha...
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BRAKE SERVICE PROCEDURES FOR 2003 Lexus GS300 AUTOMOBILES
Lexus -> Hydraulic Brake Systems -> Description
Vehicle: 2003 Lexus GS300 3.0 L6 GAS
When the brake pedal is depressed, a vacuum builds up in the booster which amplifies the pedal force, pressing on the piston in the master cylinder. The piston raises the hydraulic pressure in the cylinder. This ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Lexus GS300 AUTOMOBILES
Lexus -> Component Locations -> GS430, LS430, LX470, RX300, RX330, RX400h, SC430 & 1998-06 GS300
Vehicle: 2003 Lexus GS300 3.0 L6 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Lexus GS300 AUTOMOBILES
CV AXLE SHAFT, Replace -> Front
Vehicle: 2003 Lexus GS300 3.0 L6 GAS
Front
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and rear wheels.
- Remove suspension member brace bolts.
- Remove split pin and driveshaft castle nut and washer from front hub.
- Apply brake and remove axle hub nut.
- Place reference mark on adjusting cam and lower suspension arm
- Remove bolt and disconnect lower suspension arm from axle hub.
- Place reference ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Lexus GS300 AUTOMOBILES
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 2003 Lexus GS300 AUTOMOBILES
Cabin Air Filter Service -> Lexus -> 2002-05 GS300 & GS430
Vehicle: 2003 Lexus GS300 3.0 L6 GAS
Under normal operating conditions the cabin air filter should be replaced 7,500 miles. In dusty areas change the cabin air filter more often.
- Open the glove compartment.
- Remove the cover located at the rear of the glove compartment by lifting upward and pulling outward, Fig. .
- Through the glove compartment rear co...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Lexus GS300 AUTOMOBILES
Lexus -> Overdrive (O/D) Indicator Lamp ->
Vehicle: 2003 Lexus GS300 3.0 L6 GAS
The automatic transmission electrical system possesses internal self-diagnostic capabilities. If a fault occurs within the system, the Electronic Control Module (ECM) stores a diagnostic trouble code and the "... "
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Lexus GS300 AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Lexus GS300 3.0 L6 GAS
Lower
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp at radiator outlet.
- Remove hose from radiator.
- Reposition hose clamp at water inlet.
- Remove hose from water inlet.
- Remove hose from vehicle.
- Reverse procedure t...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Lexus GS300 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 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 2003 Lexus GS300 AUTOMOBILES
Component location diagrams for most 2003 Lexus GS300 cars and light trucks sold in the U.S. from 1990+.
Engine Compartment Components Diagram for 2003 Lexus GS300 3.0 L6 GAS Components on diagram: |
Engine Compartment Components Diagram for 2003 Lexus GS300 3.0 L6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Lexus GS300 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Lexus GS300 cars and light trucks sold in the U.S.
2003 Lexus GS300 3.0 L6 GAS Wiring Diagram Components on diagram: |
2003 Lexus GS300 3.0 L6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Lexus GS300 AUTOMOBILES
OEM TSB listings for most 2003 Lexus GS300 cars and light trucks sold in the U.S. from 1985+.
Document: REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE - REVISED Vehicle: 2003 Lexus GS300 3.0 L6 GAS Symptoms: |
Document: UPPER/LOWER WINDSHIELD TICK NOISE Vehicle: 2003 Lexus GS300 3.0 L6 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Lexus GS300 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 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 2003 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 2003 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 2003 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
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