TSBs

Revising bucking Lexus problem

March 11, 2025

All 2021-2022 Lexus LS500 vehicles may exhibit a surge/bucking condition when applying throttle of less than 20%.

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The ECM logic has been revised to address this condition. Reprogram the ECM using software 16.30.011 or later.

All 2021-2022 Lexus LS500 vehicles may exhibit a surge/bucking condition when applying throttle of less than 20%. This condition is only felt after the vehicle has cold soaked and reduces as the vehicle warms up.

The condition is no longer present once it reaches normal operating temperature. The ECM logic has been revised to address this condition. Reprogram the ECM using software 16.30.011 or later.

About the Author

Mike Mavrigian | Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.