s4iscool

Yes it’s likely the tsb will fix it. Slow speed bumps cause the creak every time. Dealer should know about this common issue and easily replace them.

CalebD

Ok, I guess my new post got moved to this thread. I scrolled up and found L-SB-0030-19. Looks like it doesn't apply to 2021 models... but the sound seems like that is what it is.

whiteghost

We have a 2019 RX350 with 36k miles in incredible shape. I do t drive it often but I did today to get us a new battery but noticed when going over speed bumps at my daughters school that the rear area, either the liftgate of the shocks were making a slight noise.

Has anyone else had something like this and what was it?

I kind of feel like it's the liftgate on the left rear side.

ravenuer

It could be the gate, but it could also be the rear suspension.

auero

I have a 2020 that has this issue and isn’t included in this TSB for whatever reason. I’ve tried to go to the dealer about this and they couldn’t reproduce it but it is noted on my records. My 4 year warranty expired and now I’m not sure what they’ll do as the sound has gotten worse.

bamalam

I've had the rear suspension squeak for a few months, although I didn't recognize as such until recently. It sounded exactly like it was coming from the back seat behind the driver and only noticed at low speed. I'm pleased to report that silicone spray in the right spot, as noted in post 129 (Rear suspension noise - Page 9 - ClubLexus - Lexus Forum Discussion), fix it. I sprayed it in the evening and let it sit overnight. No more squeak.