Q: How do I replace the transmission speed sensors on Lexus RX330?A: Speed sensors are externally located on U241E, U140E, U140F, U150E, and U150F transaxle models, but internally mounted on U760E, U660E, U660F, U880F, U881E, U881F, UA80E, and UAB0F models. The Input Turbine Speed Sensor and Counter Gear Speed Sensor are on the transaxle. To replace, remove the battery and air intake duct, identify the sensor, disconnect its connector, and remove the mounting bolt. Discard the old sensor O-ring and use a new one during installation. Follow the removal steps in reverse to finish.