Hybrid Vehicle Control System: Precaution

2004 Toyota Matrix XR, FWD, StandardSECTION Precaution
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: A repair operation incorrectly performed on the hybrid vehicle (HV) could cause an electrical shock, leakage or explosion. Be sure to perform repair operations correctly.
  1. Remove key from ignition switch  .
  2. Ensure that charge connector is disconnected  .
  3. Wear insulating gloves always  .
  4. Disconnect negative (-) terminal cable from auxiliary battery  .
  5. Remove service plug and do not start any repair operation before 5 minutes have passed  .
    Fig 1: Removing Service Plug
    G01066125Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

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When to See a Mechanic

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

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