I have same issue on my 2004 RX330 out of Canada. Dealer says he has never heard such a thing. Did you get yours resolved?

 

Nothing yet...appointment is on Thursday. I'll post an update then. Which dealer are you working with?

The "release" or "bump" sensation I feel is almost like the brakes releasing or a gear going into neutral all of a sudden. Mine happens consistently around 45Km when decelerating...the clunk sound and the bump occur at the same time.

C

 

Hi there, I am in Canada too, but I haven't gone to Lexus yet since I posted my problem on this forum. I have also been to my Lexus dealer in Richmond, BC 3 times before and I have test drove the rx with them and they keep saying that they hear nothing. I got the ECU re-programmed but no help. I had a service loaner of the same rx as mine and it did not have any clunks or anything and drove TOTALLY different than my rx. I would appreciate it if someone had the Canadian TSB on this clunk problem. I thought Lexus was supposed to be reliable thats why i bought it.

 

So finally got the clunk sound taken care of... but of course it came after 3 visits to the dealer and several test drives with different people - Service Rep, Master Mechanic, Service Manager...
Even though the Service Mgr tried to tell me it was normal, I argued that it could not be and that it definitely was not something that should not be happening, hence the test drive with him. He finally admitted something was up...

So, the clunk sound was taken care of by putting some bushings on the hose which apparently was bolted to the frame and then echoed throughout the car. Having driven it home only (since my wife drives this full time) I thought the "bump or release" sensation was still there...now I haven't driven it enough but my thinking is yes, the bushings address the clunking sound, but based on the original posts here, the replacing of the hose with the new design may fix the sensation (which is a pressure issue with the older tube assembly). Problem is I spent enough of my time (work hours for that matter) trying to get this resolved and I can't go back for a few weeks to confirm whether this is true or not..

Any other experiences out there since?

C

 

you guys are making me nervous.

 

Hey Cmac, do you have a printout of what the Lexus dealer did to your rx because I want to know the part numbers used and everything. If you dont mind can you write out what was printed on that printout

Thank you

 

how do get the TSB so i can print it for the clunking and the ecu/tansmission?

 

i wonder if thats happening on mine.........i need to stop without any music on. usually i drive with the music up so loud i dont hear any noise the car might or not be making.