Turn Signal And Hazard Warning System

2004 Toyota Matrix XR, FWD, StandardSECTION Turn Signal And Hazard Warning System
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
TURN SIGNAL AND HAZARD WARNING SYSTEM

Symptom Suspect Area See Section
Hazard warning light does not light up.
  1. Hazard switch circuit
  2. Combination switch
  3. Front light ECU
  4. Driver side J/B ECU
  1. HAZARD SWITCH CIRCUITΒ 
  2. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Turn signal light does not light up. (All)
  1. Turn signal light circuit
  2. Light control switch circuit
  3. Combination switch
  4. Front light ECU
  5. Driver side J/B ECU
  1. TURN SIGNAL LIGHT CIRCUITΒ 
  2. LIGHT CONTROL SWITCH CIRCUIT
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  5. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
RENDER: 1.0x

NO RELATED

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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.