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2004 Lexus SC430 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!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2004 Lexus SC430 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 SC430 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2004 Lexus SC430 AUTOMOBILES
Lexus -> Diagnosis & Testing -> A/C System Troubleshooting -> A/C System Does Not Operate -> Diagnostic Trouble Code (DTC) Not Recorded, Set Mode Is Cleared When Ignition Switch Is Turned Off -> Engine Idle Up Does Not Occur, Or Is Continuous -> ES 300, GS 300, GS 430, IS 300, RX 300 & SC 430 -> Insufficient Air Flow -> LS 430 -> No Air Flow Mode Control -> No Air Inlet Control -> No Blower Control -> No Blower Operation -> No Cool Air Comes Out -> No Temperature Control (Only Maximum Cool Or Maximum Warm) -> No Warm Air Comes Out -> Output Air Is Warmer Or Colder Than Set Temperature Or Response Is Slow -> Seat Heater Does Not Operate
Vehicle: 2004 Lexus SC430 4.3 V8 GAS
A/C System Does Not Operate
- Inspect ignition (IG) power source circuit.
- Inspect A/C control assembly.
No Blower Operation
- Inspect heater main relay circuit.
- Inspect blower motor circuit.
- Inspect engine coolant temperature sensor circuit.
- Inspect ignition (IG) power source circuit.
- Inspect A/C control assembly.
No Blower Control
- Inspect blower motor circuit.
- Inspect IG power source circuit.
- Inspect heater main relay circuit.
Insufficient Air Flow
- Inspect blower motor...
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BRAKE SERVICE PROCEDURES FOR 2004 Lexus SC430 AUTOMOBILES
Lexus -> Hydraulic Brake Systems -> Precautions -> Coded Theft Protection Disarming
Vehicle: 2004 Lexus SC430 4.3 V8 GAS
Coded Theft Protection Disarming
- Obtain theft protection code number from customer.
- Enter code number prior to disconnecti...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Lexus SC430 AUTOMOBILES
Lexus -> Fuel Filter Replacement -> GS430, LS430, SC430 & 1998-06 GS300 -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2004 Lexus SC430 4.3 V8 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 2004 Lexus SC430 AUTOMOBILES
DRIVESHAFT, Replace -> Front -> Rear
Vehicle: 2004 Lexus SC430 4.3 V8 GAS
Front
- Raise vehicle off ground and support it with safety stands in proper locations.
- Remove bolts securing rear engine undercover.
- Make a reference mark across driveline and differential companion flange.
- Remove bolts, washer, and nuts from companion flange.
- Make a reference mark on driveline shaft flange and transfer flange.
- Remove nuts and washers and front driveline shaft assembly.
- Reverse procedure to install noting the following:
- Torque driveline to differential companion flange mounting bolts to 59 ft. lbs.
- T...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2004 Lexus SC430 AUTOMOBILES
Component Locations
Vehicle: 2004 Lexus SC430 4.3 V8 GAS
Refer to F...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Lexus SC430 AUTOMOBILES
Alternator, Replace
Vehicle: 2004 Lexus SC430 4.3 V8 GAS
- Disconnect battery ground cable.
- Remove air cleaner inlet and V-bank cover.
- Remove fan and alternator drive belt.
- Remove engine under cover.
- Remove power steering pump pulley using suitable tool.
- Disconnect alternator electrical connectors.
- Remove rubber cap and nut, then disconnect a...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Lexus SC430 AUTOMOBILES
Cabin Air Filter Service -> Lexus -> 2003-09 SC430
Vehicle: 2004 Lexus SC430 4.3 V8 GAS
Under normal operating conditions the cabin air filter should be replaced every 12 months or 10,000 miles. In dusty areas change the cabin air filter more often.
- Open the glove compartment.
- On 2003-07 models, remove the two retainer pins located at the upper inside part of the glove compartment using a suitable pair of pliers, then lower then the glove compartment.
- On all models, through the glove compartment opening, disengage t...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 Lexus SC430 AUTOMOBILES
Lexus -> Malfunction Indicator Lamp (MIL) ->
Vehicle: 2004 Lexus SC430 4.3 V8 GAS
On some models equipped with OBD II, the MIL will also illuminate if the fuel tank filler cap is not properly tightened. Tighten fuel tank filler cap until it clicks.
On some models equipped with OBD II, if a misfire condition which may cause damage to the catalytic converter is present, the Check engine lamp will flash once per second until vehicle operation is outside the speed and load range causing the misfire. The lamp will stop flashing and remain steady
On all models, the MIL should light when the ignition switch is placed in the On position without starting the engine. When the engine is...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Lexus SC430 AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2004 Lexus SC430 4.3 V8 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 2004 Lexus SC430 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 Lexus SC430 4.3 V8 GAS
- Remove bolts from air cleaner inlet.
- Rotate or lift belt tensioner arm counterclockwise, using a suitable tool to relieve tension from dri...
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COMPONENT LOCATION DIAGRAMS FOR 2004 Lexus SC430 AUTOMOBILES
Component location diagrams for most 2004 Lexus SC430 cars and light trucks sold in the U.S. from 1990+.
 SFI System Components Diagram for 2004 Lexus SC430 4.3 V8 GASComponents on diagram: |
 F Relay Locations Diagram for 2004 Lexus SC430 4.3 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2004 Lexus SC430 AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Lexus SC430 cars and light trucks sold in the U.S.
 2004 Lexus SC430 4.3 V8 GAS Wiring DiagramComponents on diagram: |
 2004 Lexus SC430 4.3 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Lexus SC430 AUTOMOBILES
OEM TSB listings for most 2004 Lexus SC430 cars and light trucks sold in the U.S. from 1985+.
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Document: REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE - REVISED Vehicle: 2004 Lexus SC430 4.3 V8 GAS Symptoms: |
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Document: TIRE INFLATION PRESSURE COMPENSATION AND ADJUSTMENT Vehicle: 2004 Lexus SC430 4.3 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Lexus SC430 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 Lexus SC430 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 2004 Lexus SC430 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 2004 Lexus SC430 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 2004 Lexus SC430 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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