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2004 Toyota Highlander CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Toyota 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 2004 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!
A/C & HEATER SERVICE PROCEDURES FOR 2004 Toyota Highlander AUTOMOBILES
Air Bag System Precautions -> Toyota -> Disarming
Vehicle: 2004 Toyota Highlander 3.3 V6 GAS
The Supplemental Restraint System (SRS) incorporates a back up energy source that can maintain sufficient voltage to cause a deployment for up to 90 seconds after the ignition switch is turned off and the battery is disconnected.
When the battery is disconnected all vehicle memory is lost, make notes of radio station settings. Never use a back-up power source from outside the vehicle.
- Note radio station settings before disconnecting battery, as all vehicle memory will be lost.
- Place ...
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BRAKE SERVICE PROCEDURES FOR 2004 Toyota Highlander AUTOMOBILES
Toyota -> Hydraulic Brake Systems -> Precautions -> Audio Coded Anti-Theft System
Vehicle: 2004 Toyota Highlander 2.4 L4 GAS
Audio Coded Anti-Theft System
Some models are equipped with an audio coded anti-theft system that will disable the radio when the battery cable is disconnected. The system can be identified by the "ANTI-THEFT SYSTEM" on the cassette tape lid. Obtain 3 digit customer code for input. Reset system after service as follows:
- Obtain 3 digit audio anti-theft code.
- Depress 1 (PROG) while depressing righthand side of TUNE SEEK button, - - - will appear in tape operation display.
- To enter the first digit, depress 1 (PROG) button repeatedly until the number of times depressed equals the first digit ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 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: 2004 Toyota Highlander 3.3 V6 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...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 Toyota Highlander AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2004 Toyota Highlander 2.4 L4 GAS
- Raise and support vehicle.
- Remove wheel and tire assembly.
- Drain transmission fluid and transfer case oil.
- Unstake drive shaft hub nut.
- With an assistant applying brakes, remove drive shaft hub nut.
- Remove nut, then disconnect stabilizer bar link fro shock absorber.
- Remove bolt and separate ABS speed sensor wire and hose from shock absorber.
- Remove bolt, then remove ABS speed sensor from steering knuckle.
- Remove cotter pin and nut, then separate tie rod end from steering knuckle, using a suitable pry tool.
- Remove bolt and nuts from lower ball joint, then separate lower control arm...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Toyota Highlander AUTOMOBILES
Alternator, Replace
Vehicle: 2004 Toyota Highlander 3.3 V6 GAS
- Disconnect battery ground terminal.
- Disconnect alternator connector.
- Remove nut, and disconnect lead wire from terminal B.
- Loosen alternator mounting bolts.
- Loosen bolt to lessen tension of V belt.
- Remove alternator moun...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Toyota Highlander AUTOMOBILES
Cabin Air Filter Service -> Toyota -> 2003-07 Highlander & 2006-07 Highlander HV
Vehicle: 2004 Toyota Highlander 2.4 L4 GAS
On 2003 models, under normal operating conditions the cabin air filter should be replaced every 22,500 miles. In dusty areas change the cabin air filter every 10,000 miles.
On 2004-07 models, the cabin air filter should be cleaned every 18 months or 15,000 miles and replaced every 36 months or 30,000 miles. The filter should be replaced more often if air flow is less than normal.
- Remove the screw retaining the eyelet clip, Fig. .
- Open the glove compartment door.
- Push inward at each side of the glove compartment door to disengage the retainers, then lower t...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 Toyota Highlander AUTOMOBILES
Toyota -> Malfunction Indicator Lamp (MIL) ->
Vehicle: 2004 Toyota Highlander 3.3 V6 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.
The MIL should light when the ignition switch is placed in the On position without starting the engine. When the engine is started, the lamp should go out. If it remains lit, a fault has been detected by the diagnostic system and has logged a diagnostic trouble code. If the fault does not occur again within three trips, the lamp will go out but a diagnostic tro...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Toyota Highlander AUTOMOBILES
Radiator, Replace
Vehicle: 2004 Toyota Highlander 3.3 V6 GAS
- On models equipped with coded audio anti-theft systems, complete code procedures.
- On all models, raise and support vehicle.
- Drain coolant from engine and radiator into a suitable container.
- Remove battery and tray, then disconnect cruise control actuator and mounting from body.
- Disconnect upper radiator and coolant reservoir hoses from radiator.
- Disconnect lower radiator hose at engine, then tran...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Toyota Highlander AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 Toyota Highlander 3.3 V6 GAS
- Raise and support vehicle.
- Remove righthand front wheel.
- Remove engine under cover.
- Remove righthand front fender apron seal.
- Loosen alternator pivot bolt.
- Loosen alternator adjuster lock bolt.
- Loose...
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COMPONENT LOCATION DIAGRAMS FOR 2004 Toyota Highlander AUTOMOBILES
Component location diagrams for most 2004 Toyota Highlander cars and light trucks sold in the U.S. from 1990+.
 Seat Heater Components Diagram for 2004 Toyota Highlander 2.4 L4 GASComponents on diagram: |
 Seat Diagram for 2004 Toyota Highlander 2.4 L4 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2004 Toyota Highlander AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Toyota Highlander cars and light trucks sold in the U.S.
 2004 Toyota Highlander 2.4 L4 GAS Wiring DiagramComponents on diagram: |
 2004 Toyota Highlander 2.4 L4 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Toyota Highlander AUTOMOBILES
OEM TSB listings for most 2004 Toyota Highlander cars and light trucks sold in the U.S. from 1985+.
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Document: ABNORMAL HORN OPERATION Vehicle: 2004 Toyota Highlander 3.3 V6 GAS Auto Systems: |
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Document: Abnormal Horn Operation Vehicle: 2004 Toyota Highlander 3.3 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Toyota Highlander AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 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 2004 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 2004 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 2004 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
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