2003 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

External Pages

's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle. Different car Section 1 (Electronic Suspension - Wiring Diagrams) Section 2 (Wiring Diagrams) Section 3 (Engine Controls - Service & Adjustment Specifications) Section 4 (Engine Controls - On-Vehicle Adjustments) Section 5 (Engine Controls - Theory & Operation) Section 6 (Engine Controls - Basic Diagnostic Procedures) Section 7 (Engine Controls - Self-Diagnostics) Section 8 (Engine Controls - Self-Diagnostics) Section 9 (Engine Controls - Self-Diagnostics) Section 10 (Engine Controls - Trouble Shooting - No Codes) Section 11 (Engine Controls - System & Component Testing) Section 12 (Engine Controls - System & Component Testing) Section 13 (Engine Controls - Pin Voltage Charts) Section 14 (Vacuum Diagrams) Section 15 (Engine Controls - Removal, Overhaul & Installation) Section 16 (Wiring Diagrams) Section 17 (Disc Brakes) Section 18 (Automatic A/C-Heater Systems) Section 19 (Automatic Transmission Diagnosis - U140E & U140F) Section 20 (System Wiring Diagrams) Section 21 (System Wiring Diagrams) Section 22 (System Wiring Diagrams) Section 23 (Overhaul - A650E) Section 24 (Automatic Transmission - Diagnosis) Section 25 (Diagnosis - U150E) Section 26 (Automatic Transmission Shift Interlock Systems) Section 27 (Computer Relearn Procedures - Import) Section 28 (Air Bag Restraint Systems) Section 29 (Air Bag Restraint Systems) Section 30 (System Wiring Diagrams) Section 31 (Power Door Locks, Trunk Lid & Fuel Door Release) Section 32 (Engine Controls - Self-Diagnostics) Section 33 (Engine Controls - Self-Diagnostics) Section 34 (Engine Controls - Self-Diagnostics) Section 35 (Engine Controls - Self-Diagnostics) Section 36 (Engine Controls - Self-Diagnostics) Section 37 (Engine Controls - System & Component Testing) Section 38 (Engine Controls - System & Component Testing) Section 39 (Engine Controls - System & Component Testing) Section 40 (Engine Controls (Removal & Installation)) Section 41 (Multiplex Communication System) Section 42 (Engine Immobilizer System) Section 43 (Anti-Theft Systems) Section 44 (Remote Keyless Entry Systems) Section 45 (Power Mirrors) Section 46 (Power Seats) Section 47 (Cruise Control Systems) Section 48 (Instrument Panel) Section 49 (Steering Column Switches) Section 50 (Wiper/Washer Systems) Section 51 (Automatic Headlights) Section 52 (Power Moon Roofs) Section 53 (Anti-Lock) Section 54 (Anti-Lock) Section 55 (Multiplex Communication System) Section 56 (Body Control System) Section 57 (Instrument Panel) Section 58 (Steering Column Switches) Section 59 (Automatic Headlights & Lighting) Section 60 (Wiper/Washer Systems) Section 61 (Power & Heated Seats) Section 62 (Moon Roof) Section 63 (Power Windows) Section 64 (Power Door Locks & Liftgate) Section 65 (Anti-Theft System) Section 66 (Remote Keyless Entry) Section 67 (Engine Immobilizer) Section 68 (Cruise Control) Section 69 (Anti-Lock Brake System) Section 70 (Electronic Suspension) Section 71 (Engine Immobilizer System - Diagnosis) Section 72 (Servicing A/T) Section 73 (Front Suspension) Section 74 (Timing Belt Replacement - 4.3L V8) Section 75 (System Wiring Diagrams) Section 76 (System Wiring Diagrams) Section 77 (System Wiring Diagrams) Section 78 (System Wiring Diagrams) Section 79 (System Wiring Diagrams) Section 80 (Engine Mechanical) Section 81 (Air Bag Restraint Systems) Section 82 (Air Bag Restraint Systems) Section 83 (Specifications & Procedures) Section 84 (Computer Relearn Procedures) Section 85 (Brakes Mechanical) Section 86 (Electrical Component Locator) Section 87 (Electric Cooling Fans) Section 88 (Axle Shafts) Section 89 (System Wiring Diagrams) Section 90 (System Wiring Diagrams) Section 91 (System Wiring Diagrams) Section 92 (System Wiring Diagrams) Section 93 (Generators & Regulators) Section 94 (Generators & Regulators) Section 95 (Generators & Regulators) Section 96 (Servicing) Section 97 (Starters) Section 98 (Air Bag Restraint Systems) Section 99 (Air Conditioning) Section 100 (Propeller Shaft) Section 101 (Steering System) Section 102 (Power Tilt And Power Telescopic Steering Column) Section 103 (Air Conditioning System) Section 104 (Alignment Specifications & Procedures) Section 105 (Standard Bolt) Section 106 (Automatic Transmission (Service Specifications)) Section 107 (Engine Control System - Diagnosis) Section 108 (Electronic Modulated Suspension - Diagnosis) Section 109 (Abs W/ EBD - Diagnosis) Section 110 (Abs W/EBD & BA & TRAC & VSC System - Diagnosis) Section 111 (Automatic Transaxle - Diagnosis) Section 112 (Air Conditioning System - Diagnosis) Section 113 (Lighting System - Diagnosis) Section 114 (Wiper & Washer - Diagnosis) Section 115 (Audio System - Diagnosis) Section 116 (Power Window Control System - Diagnostics) Section 117 (Power Mirror Control System - Diagnosis) Section 118 (Combination Meter - Diagnosis) Section 119 (Front Power Seat Control System (With Memory) - Diagnosis) Section 120 (Power Door Lock - Diagnosis) Section 121 (Wireless Door Lock - Diagnosis) Section 122 (Luggage Compartment Door Opener System - Diagnosis) Section 123 (Key Unlock Warning System - Diagnosis) Section 124 (Engine Immobilizer System - Diagnosis) Section 125 (Theft Deterrent System - Diagnosis) Section 126 (Multiplex Communication System - Diagnosis) Section 127 (Can Communication System - Diagnosis) Section 128 (Cruise Control System - Diagnosis) Section 129 (Engine Control System) Section 130 (Fuel System) Section 131 (Emission Control System) Section 132 (Intake Air Control System) Section 133 (Engine (Mechanical)) Section 134 (Engine Exhaust Assembly) Section 135 (Cooling System) Section 136 (Lubrication System) Section 137 (Ignition System) Section 138 (Wheel Alignment) Section 139 (Abs Brake Sensors/Actuators) Section 140 (Automatic Transaxle (On-Vehicle Service)) Section 141 (Steering Column) Section 142 (Power Steering) Section 143 (Heater & Air Conditioner) Section 144 (Instrument Panel/Meter) Section 145 (Theft Deterrent Systems) Section 146 (Sliding Roof System) Section 147 (Cruise Control) Section 148 (Coolant Replacement (2UZ-FE)) Section 149 (Steering Column System) Section 150 (Engine Hood/Door (Service Specifications)) Section 151 (Steering Column) Section 152 (Headlight Dimmer Switch) Section 153 (Audio & Visual System) Section 154 (Instrument Panel/Meter) Section 155 (Rear Seat) Section 156 (Front Door) Section 157 (Rear Door) Section 158 (Introduction) Section 159 (Automatic Transmission (Service Specifications)) Section 160 (Automatic Transmission - Diagnosis) Section 161 (Power Tilt & Telescopic Steering Column - Diagnosis) Section 162 (Power Seat Control System - Diagnosis) Section 163 (Rear Left Seat Control System - Diagnosis) Section 164 (Rear Right Seat Control System - Diagnosis) Section 165 (Rear Seat Switch System - Diagnosis) Section 166 (Theft Deterrent System - Diagnosis) Section 167 (Cruise Control System - Diagnosis) Section 168 (Engine Immobilizer System - Diagnosis) Section 169 (Combination Meter System - Diagnosis) Section 170 (Combination Switch Control System - Diagnosis) Section 171 (Steering Pad Switch System - Diagnosis) Section 172 (Rain Sensor System - Diagnosis) Section 173 (Sliding Roof - Diagnosis) Section 174 (Driver Side Junction Block (Body No. 2 Control System) - Diagnosis) Section 175 (Passenger Side Junction Block (Body No. 3 ) Control System - Diagnosis) Section 176 (Luggage Room Junction Block (Body No. 4) Control System - Diagnosis) Section 177 (Front Light (Body No. 5) Control System - Diagnosis) Section 178 (Driver

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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