2016 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE

Inspection steps

CAUTION:
  • Some functions of the smart entry & start system (entry function) use the CAN communication system and the LIN communication system. Inspect the communication function first by referring to "How to troubleshoot" (Refer to HOW TO PROCEED WITH TROUBLESHOOTING  ). Confirm that the communication system is functioning properly before proceeding to repair the smart entry & start system (entry function).
  • Check if the electrical key transmitter sub-assembly is inside the vehicle.
  • Before proceeding with the inspection procedure, check that the DTC B1242 (wireless door lock control) is not output. (Refer to DTC CHECK/CLEAR  )
  • Refer to the notes provided under "Smart entry & start system (entry function)" before proceeding to replace the collation ECM (smart key ECM assembly). (Refer to ENTRY & START SYSTEM (ENTRY FUNCTION)  )
  • After the repair work is complete, perform the "DTC output check operation" to confirm that the diagnostic code is not output again.
  1. Check the entry function (entry trunk open function).
    1. Check if the entry trunk open function works properly. (Refer to OPERATION CHECK  )

      Result

      Result Go to
      The entry trunk open function works properly. A
      The entry trunk open function does not work properly. B

      B: Proceed to check other problems ("Symptom table") (Refer to PROBLEM SYMPTOMS TABLE  ).

      A: Go to next step

  2. Checking the waveform environment
    1. Move the electrical key transmitter sub-assembly toward the indoor electrical key antenna assembly no. 3 (trunk interior antenna) and check if the entry trunk compartment lock-in prevention function works.
      Fig 1: Checking Electrical Key Transmitter Sub-Assembly (Trunk Interior Antenna)
      G10216291Courtesy of SUBARU OF AMERICA, INC.
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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