Lexus GS350 limp mode issue with acceleration limited to 20mph on Lexus GS350

Some Lexus GS350 owners report experiencing limp mode issues, which limit acceleration to around 20mph to prevent further vehicle damage. This safety feature activates when a serious problem is detected, but resetting the ECU may sometimes resolve the issue, ideally performed by a professional with a good scan tool. Additionally, some owners find that temporary transmission problems can trigger limp mode, and following specific instructions may help reset it. Common causes include issues with the throttle position sensor or transmission problems. Symptoms of limp mode can involve warning lights on the dashboard, unusual sounds, and difficulty accelerating, particularly uphill. It is recommended that owners have their Lexus GS350 inspected by a professional to effectively diagnose and address any underlying problems.