2009 Hyundai Tucson GLS, AutomaticFACTORY OEM SERVICE PROCEDURE

Feedback Shift Control

The turbine speed is monitored and controlled during shifting to satisfy target turbine speed which is accomplished by feedback control of solenoid valve duty value. Therefore the compensation of torque for the outworn engine or A/T is possible. This has resulted in the ability to control the change in torque during shifting and produce smooth shift and better shift feeling. Feedback shift control is also applicable in N→D and N→R.

Fig 1: Feedback Shift Control Reference Chart
G04811199Courtesy of HYUNDAI MOTOR CO.
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:

  • 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.