2008 Toyota Sequoia SR5, 5.7 Y, RWDFACTORY OEM SERVICE PROCEDURE

On-Vehicle Inspection

  1. CHECK STOP LIGHT CONTROL RELAY (BRK NO. 1, BRK NO. 2) 
    1. Remove the 2 stop light control relays from the engine room relay block.
    2. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying Relay
      G04975259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      3 - 4 When battery voltage is applied to terminals 1 and 2 10 kΩ or higher
      When battery voltage is not applied to terminals land 2 Below 1 Ω
      3 - 5 When battery voltage is not applied to terminals 1 and 2 10 kΩ or higher
      When battery voltage is applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the relay.

    3. Install the 2 stop light control relays.
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:

  • • 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.

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