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2003 Lexus IS300 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
- 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 2003 Lexus IS300 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 IS300 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Lexus IS300 AUTOMOBILES
Import Compressor Service -> Nippondenso Compressor -> Compressor Seal, Replace
Vehicle: 2003 Lexus IS300 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 IS300 AUTOMOBILES
Lexus -> Hydraulic Brake Systems -> Component Replacement -> Except LX470 -> GS300, GS430 & SC430 -> GX470 -> Hydraulic Brake Booster -> LX470 -> Master Cylinder -> Traction Control (TRAC) Actuator
Vehicle: 2003 Lexus IS300 Sportcross 3.0 L6 GAS
Master Cylinder
Except LX470
- Remove air cleaner cover with air cleaner hose.
- Disconnect level warning switch connector.
- Remove brake fluid with suitable syringe.
- Remove brake lines with brake line wrench No. 09023-00100 and 09751-36011, or equivalents.
- Remove master cylinder mounting nuts, then the master cylinder and gasket.
- Reverse procedure to install, noting the following:
- Adjust length of booster pushrod before installation of master cylinder.
- After installation, fill brake fluid and bleed brake system.
- Inspect for brake fluid leaks.
- Inspect and adjust brake pedal.
LX470
- Remove br...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Lexus IS300 AUTOMOBILES
Lexus -> Component Locations -> ES330, GX470, IS250, IS300, IS350 & 1997-03 ES300
Vehicle: 2003 Lexus IS300 Sportcross 3.0 L6 GAS
The fuel filt...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Lexus IS300 AUTOMOBILES
DRIVESHAFT, Replace -> Rear
Vehicle: 2003 Lexus IS300 3.0 L6 GAS
Rear
- Raise vehicle off ground and support it with safety stands in proper locations.
- Remove engine undercovers.
- Remove rear floor board.
- Remove bolts and nuts securing front exhaust pipe assembly.
- Disconnect heated oxygen sensor.
- Remove five bolts and pipe support bracket, retainer and nut from exhaust manifold.
- Disconnect the exhaust pipe assembly from four rings.
- Remove exhaust pipe assembly.
- Remove two gaskets from exhaust pipe assembly.
- Make a reference mark across driveline and differential companion flange.
- Remove bolts, washer, and nuts from companion flange.
- Remove center suppor...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Lexus IS300 AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Lexus IS300 Sportcross 3.0 L6 GAS
- Disconnect battery ground cable.
- Remove engine under cover.
- On models with manual transmission, remove drive belt tensioner absorber.
- On all models, loosen belt tension by turning belt tensioner clockwise from bottom side, using tensioner tool No. SST 09216-00041 or equivalent, and remove drive belt.
- Disconnect alternator connector.
- Remove rubber cap and nut, and disconnect alternator wire.
- Disconnect engine wire clamp from wire clip on al...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Lexus IS300 AUTOMOBILES
Cabin Air Filter Service -> Lexus -> 2001-05 IS300
Vehicle: 2003 Lexus IS300 Sportcross 3.0 L6 GAS
The cabin air filter should be replaced every 22,500 miles or 18 months. In dusty areas change the cabin air filter more often.
- Open the glove compartment.
- Remove the two pins securing the glove compartment to the instrument panel, then the glove compartment.
- Thr...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Lexus IS300 AUTOMOBILES
Lexus -> Engine Oil Reminder/Maintenance Required Lamp -> 2001-05 IS300
Vehicle: 2003 Lexus IS300 3.0 L6 GAS
To reset OIL REPLACEMENT REMINDER LIGHT, turn the ignition key to the Off position with the odometer reading outlined. Turn the ignition key to the On position while holding down the ODO/TRIP butto...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Lexus IS300 AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 Lexus IS300 Sportcross 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 water outlet.
- Remove hose from water outlet.
- Remove hose from vehicle.
- Reverse procedure ...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Lexus IS300 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Lexus IS300 Sportcross 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 IS300 AUTOMOBILES
Component location diagrams for most 2003 Lexus IS300 cars and light trucks sold in the U.S. from 1990+.
 Turn Signal and Hazard Warning System Components Diagram for 2003 Lexus IS300 Sportcross 3.0 L6 GASComponents on diagram: |
 Air Conditioning System Components Diagram for 2003 Lexus IS300 3.0 L6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Lexus IS300 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Lexus IS300 cars and light trucks sold in the U.S.
 2003 Lexus IS300 Sportcross 3.0 L6 GAS Wiring DiagramComponents on diagram: |
 2003 Lexus IS300 3.0 L6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Lexus IS300 AUTOMOBILES
OEM TSB listings for most 2003 Lexus IS300 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: 2003 Lexus IS300 3.0 L6 GAS Symptoms: |
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Document: UPPER/LOWER WINDSHIELD TICK NOISE Vehicle: 2003 Lexus IS300 3.0 L6 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Lexus IS300 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Lexus IS300 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 IS300 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 IS300 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 IS300 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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