Lexus IS 200t transmission warning, harsh shifting, or shudder diagnosis This Lexus IS guide is based on 2 documented technical cases, including 1 confirmed successful repair outcome. It summarizes the captured evidence without assuming every vehicle with a similar symptom has the same cause. Documented applicability includes 2015–2016.
What Drivers or Technicians Reported
Documented complaints included: Transmission selects Reverse and Drive but the vehicle will not move; ratcheting is heard in Park.; MIL with pressure-control-solenoid circuit fault..
Fault Codes Seen in Supporting Cases
Codes included P0745-13, P0748. A code is a diagnostic clue, not automatic proof that a specific part failed.
Causes Confirmed in Documented Cases
Failed PCM pressure-control-solenoid driver.
What the Diagnostic Process Found
Proper fluid and level reported No power Good continuity
Repairs That Corrected Documented Cases
Replace and program PCM
Repairs or Attempts That Did Not Solve the Original Problem
Replace transmission and transfer case assembly (first attempt) — unsuccessful Replace transmission and transfer case assembly (second attempt) — unsuccessful Program TCM — unsuccessful Reset transmission memory — unsuccessful
Lexus IS Diagnosis in Hickory, NC
Mich's Foreign Cars has served Hickory and the surrounding Western North Carolina area since 1983. We specialize in European and foreign vehicles and use professional diagnostic equipment to identify the cause before recommending repairs. If your Lexus IS is showing this symptom or fault pattern, call Mich's Foreign Cars at 828-324-6012 to schedule diagnosis.