Lexus RX300 owners have reported 3 problems related to transmission fluid leaking (under the power train category). The most recently reported issues are listed below.
2000 Rx300 transmission failure at approximately 121,000 miles . . . Dealer does not do rebuilds, so quoted for $4100 a new one without any detailed information on what exactly was wrong with it. Had it towed to reputable specialist, and was told a rebuild would cost more than a "re-manufacture" . . . $3600 + tax for 12 month warranty. Got it done, brought it home the 1st day and is leaking transmission fluid so need to bring back for a possible fix or swap. Not happy. No other mechanical issues with the car for the 7 years we've owned it.
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all problems of the 2000 Lexus RX300
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Automatic transmission failed at 67,000 miles. It gave out in stop-and-go traffic. When accelerating, the engine started revving and the transmission would then slam into gear. The third time the car jerked when attempting to accelerate and then the transmission was completely gone the car would not move at all in any gear. I had to push the car to the side of the road and get it towed. Repair required putting in a rebuilt transmission at a cost of $3,800. Lexus provided no assistance on this issue. The car was always maintained per Lexus/Toyota schedules, so there is no reason for a complete transmission failure especially this early. The transmission was full of fluid and there were no leaks, etc. You will see many complaints for this same issue.
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all problems of the 2001 Lexus RX300
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2001 Lexus Rx300. Multiple incidences of transmission fluid leaking until the transmission failed, requiring a full rebuild.