2016 Hyundai Sonata Plug-In HybridFACTORY OEM SERVICE PROCEDURE

Transaxle Control Module (TCM) Learning

When shift shock is occurred, or the transaxle or TCM are replaced, TCM learning should be performed.

In the following case, TCM learning is required.

  • Transaxle assembly replacement
  • TCM upgrading
  • TCM replacement

TCM learning procedure

  1. Automatic Transaxle Fluid (ATF) temperature: 40~100Β°C
  2. Driving learning

    Drive the vehicle from a stop in D through all gears 1st, 2nd, 3rd, 4th, 5th and 6th gear while holding the throttle steady at the specified Throttle Position Sensor (TPS) value (15~25%).

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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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.