Software Update for TCM to Correct Harsh 2 -3 Shift: Lexus GS300 Transmission & Drivetrain

Problem overview

Harsh shifting of the automatic transmission between 2nd and 3rd gears may be noted. Our technicians tell us this can often be corrected by updating the software in the transmission control module (TCM).

19 people reported this problem

6 comments

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Lexus GS300 vehicles with this problem

5 model years affected

Average mileage: 148,930 miles

(96,580 - 185,000)

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Software Update for TCM to Correct Harsh 2 -3 Shift on Lexus GS300

Problem overview

Lexus GS300 vehicles with this problem

Need a diagnosis? Trust our Lexus experts.

Search for another problem

Ask our experts about your Lexus.