Lexus LX570 engine revs to 2500 RPM before 2nd gear engages, causing rough shifting on Lexus LX570

Some Lexus LX570 owners report experiencing issues with their engine revving to 2500 RPM before 2nd gear engages, resulting in rough shifting. This problem may stem from low transmission fluid or a leaking transmission, which can lead to high RPMs before shifting. Additionally, faulty solenoids in the transmission system have been noted as potential culprits, causing similar high RPMs and rough engagement. Some owners also report problems related to a malfunctioning transmission speed sensor, which can result in delayed gear engagement and elevated RPMs. Furthermore, dirty fuel injectors and engine valves may contribute to sluggish acceleration and rough shifting, impacting overall vehicle performance. Lastly, a vacuum leak can cause RPM fluctuations and rough idling, further complicating the shifting process. It is advisable for owners experiencing these issues to seek professional assistance for accurate diagnosis and resolution to ensure a smoother driving experience.