2003 Toyota Highlander REPAIR MANUAL -- HOW TO FIX YOUR CAR OR TRUCK

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2003 Toyota Highlander CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Toyota REPAIR SHOPS DON'T WANT YOU TO KNOW

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Toyota Highlander car and truck repair procedures including Toyota 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 Toyota Highlander 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 Toyota mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 2003 Toyota Highlander 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 2003 Toyota Highlander AUTOMOBILES

Toyota -> Component Replacement & Adjustment -> Heater Core, Replace -> Avalon -> Camry -> Camry Solara -> Celica -> Corolla & Echo -> Corolla Matrix -> Front -> Highlander -> Land Cruiser -> MR2 -> RAV4 -> Rear -> Sequoia & Tundra -> Sienna -> Tacoma & 4Runner
Vehicle: 2003 Toyota Highlander 2.4 L4 GAS

Avalon

  • Remove HVAC unit as outlined under "Evaporator Core, Replace."
  • Remove heater core from HVAC unit.
  • Reverse procedure to install. Ensure heater hose clamps are securely installed, Fig. .

Camry

  • Remove HVAC unit as outlined under "Evaporator Core, Replace."
  • Remove heater core from HVAC unit.
  • Reverse procedure to install. Fill and bleed cooling system as outlined under "Cooling System Bleed."

Camry Solara

Refer to "Evaporator Core, Replace" for heater core replacement procedure.

Celica

  • Remove cool...

CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander A/C & HEATER SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 2003 Toyota Highlander AUTOMOBILES

Toyota -> Rear Disc & Parking Brakes -> Brake Pad Service -> 2003-04 -> 2005 -> Avalon -> Camry, Camry Solara & Sienna -> Celica, Corolla, & MR2 -> Highlander & RAV4 -> Land Cruiser, Sequoia & 4Runner -> Matrix
Vehicle: 2003 Toyota Highlander 3.0 V6 GAS

Avalon

2003-04
  • Raise and support rear of vehicle, then remove tire and wheel assembly.
  • Remove caliper attaching bolts, then the caliper, Fig. . Do not allow caliper to hang unsupported or damage to the brake hose may occur.
  • Remove pads and anti-squeal shim(s).
  • Remove anti-rattle springs, pad guide plates and support plate.
  • Reverse procedure to install.
2005
  • Raise and support vehicle, then remove rear wheel.
  • Remove union bolt, gasket and flexible hose from brake caliper,
  • Remove slide pin and caliper, Fig. .
  • Remove brake pads, brake pad support plate and shims.
  • Reverse procedure to install...

CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander BRAKE SERVICE PROCEDURES

FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Toyota Highlander AUTOMOBILES

Toyota -> Fuel Filter Replacement -> Highlander -> Fuel System Pressure Relief -> Models Less Union Bolt Fuel Line Connection -> Models w/Union Bolt Fuel Line Connection -> Removal & Installation
Vehicle: 2003 Toyota Highlander 2.4 L4 GAS

Fuel System Pressure Relief

Models w/Union Bolt Fuel Line Connection
  • Obtain the vehicle owners radio theft protection code prior to disconnecting the battery ground cable, if equipped.
  • Disconnect the battery ground cable.
  • Remove the fuel fill cap to release fuel tank pressure.
  • Place a shop towel over the union bolt at top of fuel filter. Slowly loosen the union bolt allowing fuel pressure to bleed down.
  • Whenever the union bolt is loosened to relieve fuel system pressure, always replace the bolt gasket.
Models Less Union Bolt Fuel Line Connection
  • Obtain the vehicle owners radio theft protecti...

CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander FUEL FILTER REPLACEMENT PROCEDURES

DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Toyota Highlander AUTOMOBILES

DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 2003 Toyota Highlander 3.0 V6 GAS

CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Toyota Highlander AUTOMOBILES

Alternator, Replace
Vehicle: 2003 Toyota Highlander 3.0 V6 GAS

CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander STARTER & ALTERNATOR REPLACEMENT PROCEDURES

CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Toyota Highlander AUTOMOBILES

Cabin Air Filter Service -> Toyota -> 2003-07 Highlander & 2006-07 Highlander HV
Vehicle: 2003 Toyota Highlander 3.0 V6 GAS

CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES

MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Toyota Highlander AUTOMOBILES

Toyota -> Automatic Transmission Overdrive Lamp ->
Vehicle: 2003 Toyota Highlander 2.4 L4 GAS

CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander MAINTENANCE LAMP RESET PROCEDURES

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Toyota Highlander AUTOMOBILES

Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 2003 Toyota Highlander 3.0 V6 GAS

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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Toyota Highlander AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 2003 Toyota Highlander 3.0 V6 GAS

CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander SERPENTINE BELT SERVICE PROCEDURES

COMPONENT LOCATION DIAGRAMS FOR 2003 Toyota Highlander AUTOMOBILES

Component location diagrams for most 2003 Toyota Highlander cars and light trucks sold in the U.S. from 1990+.

Wiper/Washer Components Diagram for 2003 Toyota Highlander 3.0 V6 GASWiper/Washer Components Diagram for 2003 Toyota Highlander 3.0 V6 GAS

Components on diagram:
  • Front Wiper Link
  • Wiper Switch
  • Instrument Panel J/B
  • Washer Switch
  • Washer Motor
    • Control Modules Diagram for 2003 Toyota Highlander 3.0 V6 GASControl Modules Diagram for 2003 Toyota Highlander 3.0 V6 GAS

    Components on diagram:
  • Stereo Power Amplifier
  • Engine Room R/B No. 3
  • Engine Room J/B
  • Engine Room R/B
  • Wireless Door Lock ECU

    • CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 2003 Toyota Highlander AUTOMOBILES

    OEM drawn wiring diagrams for most 2003 Toyota Highlander cars and light trucks sold in the U.S.

    2003 Toyota Highlander 2.4 L4 GAS Wiring Diagram2003 Toyota Highlander 2.4 L4 GAS Wiring Diagram

    Components on diagram:
  • Battery
  • Ignition Switch
  • Taillamp Relay
  • Foglamp Relay
  • Dimmer Switch
    • 2003 Toyota Highlander 2.4 L4 GAS Wiring Diagram2003 Toyota Highlander 2.4 L4 GAS Wiring Diagram

    Components on diagram:
  • Symbols

    • CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 2003 Toyota Highlander AUTOMOBILES

    OEM TSB listings for most 2003 Toyota Highlander cars and light trucks sold in the U.S. from 1985+.

    Document: Abnormal Horn Operation
    Vehicle: 2003 Toyota Highlander 3.0 V6 GAS

    Auto Systems:
  • Lighting, Horns, Turn Signals, Steering Column
    • Document: ABNORMAL HORN OPERATION
    Vehicle: 2003 Toyota Highlander 3.0 V6 GAS

    Auto Systems:
  • Lighting, Horns, Turn Signals, Steering Column

    • CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Highlander TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 2003 Toyota Highlander AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Toyota Highlander 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 Toyota Highlander 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 Toyota Highlander 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 Toyota Highlander 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 2003 Toyota Highlander SPECIFICATIONS DATA!

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