How to replace driveaxle seals and speedometer driven gear seals in a transaxle on Lexus ES300?

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Fluid leaks frequently occur due to wear of the driveaxle oil seals or the speedometer drive gear oil seal and O-rings, with replacement being relatively easy as repairs can usually be performed without removing the transaxle from the vehicle. The driveaxle oil seals are located on either side of the transaxle, where the driveaxle shaft is splined into the differential; if leakage is suspected, the vehicle should be raised and securely supported on jackstands, and fluid will be found on the side of the transaxle if the seal is leaking. To replace the seal, the driveaxle assembly must be removed, and if replacing the right-side driveaxle seal, the intermediate shaft and driveaxle assembly should be removed as a single unit. The old oil seal can be carefully pried out of the transaxle bore using a screwdriver or prybar, ensuring not to gouge or nick the surface of the seal bore; if it cannot be removed this way, a special oil seal removal tool will be required. A large section of pipe or a large deep socket can be used as a drift to install the new oil seal, ensuring it is driven into the bore squarely and completely seated, with the lip of the new seal lubricated with multi-purpose grease. The driveaxle assembly should then be reinstalled, taking care not to damage the lip of the new seal. The vehicle speed sensor and speedometer driven gear housing are located on the differential part of the transaxle housing, and lubricant around the sensor housing can indicate if the O-ring is leaking. The electrical connector from the vehicle speed sensor should be disconnected, and the sensor and speedometer driven gear housing removed from the transaxle, followed by the removal of the O-ring. A new O-ring should be installed on the driven gear housing before reinstalling the speedometer driven gear and vehicle speed sensor housing, ensuring the hold-down bolt is tightened securely. For V6 models, the direct clutch speed sensor seal is located on the transaxle housing, and lubricant around the sensor housing can indicate if the O-ring is leaking. The electrical connector from the direct clutch speed sensor should be disconnected, and the sensor removed from the transaxle, followed by the removal of the O-ring. A new O-ring should be installed on the sensor body before reinstalling the direct clutch speed sensor, ensuring the hold-down bolt is tightened securely.

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