I purchased a 99 RX-300 AWD 1 1/2 years ago from a Lexus dealership. The car has has always been serviced by Lexus at every scheduled maintenance with records to prove. The car now has 73k miles and the transmission is going out. It started a week ago at a stop light......I gave it gas, but it didn't go anywhere for 3 or 4 seconds. Now the transmission has trouble shifting in all gears. The last short trip I made the car wouldn't go over 35 mph. The symptoms seem to be different with each drive - whining noise, clunking sounds, hard shifts, and sometimes no problems at all. I'm bringing it to an independent shop for repairs and will update with the estimate to fix. It's disappointing to see so many RX-300's with transmission problems. I should have read this site before making the purchase. This is my first step up from a Toyota to a Lexus and probably won't do it again. I'm not a car person, I just want a reliable, comfortable vehicle.
Update 12/12/06
Below is my complaint to the NHTSA, which includes the cost and details of my repair.
In August 2005 I purchased a 1999 Lexus AWD RX-300 with 60,000 miles from Northside Lexus in Houston. On 12/4/06 the transmission failed at 73,882 miles – the vehicle would not shift into any gear. Lexus dealers had replaced the transmission fluid at 31,385 miles and 59,134 miles. An independent transmission shop rebuilt the transmission for $3896 with the following parts: torque converter, overhaul kit, all steels, front planetary, sun gear, ring gear, rear planetary, bushing kit, and bearing kit. According to the shop, this failure has nothing to do with improper maintenance or driving, but is related to a poor transmission design. He reported common transmission problems with Lexus RX-300 vehicles. Lexus has not issued a recall or service notice for these transmissions, nor would Northside Lexus agree to reimburse any part of my repair. There are currently 19 pages of transmission issues reported at http://us.lexusownersclub.com/forums. Many reports link the problem to low capacity on the ATF oil pressure pump. These transmissions must be recalled and Lexus must reimburse consumers for these very expensive repairs.
UPDATE 12/26/06
My problems are multiplying. When I got the car out of the shop for rebuilding the transmission the ABS light was on. The transmission shop said they did not do anything to cause this problem and it's just a coincidence. Another repair shop says the right front ABS sensor is bad. Is there anything the transmission shop could have done to cause this ABS problem? What about disconnecting the battery and causing an electrical problem with the sensor?
Where is the sensor on this vehicle? On the transmission tailshaft?
Any help would be appreciated.