When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Here is a short video I recorded just a few minutes ago.
I tried to upload to YouTube first, but it turned it into a short. You can hear it at 0:05, 0:21, and at 0:32. I was able to capture the droning for most of the video if you need to show your dealer.
Here is a short I video recorded just a few minutes ago.
I tried to upload to YouTube first, but it turned it into a short. You can hear it at 0:05, 0:21, and at 0:32. I was pretty much able to capture the droning for most of the video.
The Lexus fix apparently was to eliminate the V-6 in favor of a buzzy 4 cylinder…
I have a four-cylinder Audi A5 that is far quieter and more refined than the Lexus V6 is. So it can be done but I doubt Lexus will manage to. It seems their NVH engineers are asleep. They loaned me a new ES 250 and the engine was so loud above 2000 RPM that it was pretty bad. But below 2000 it was very smooth and quiet, unlike the 3.5 V6. Weird.
I honestly cant really hear it that well. I hear road noise, wind noise, your voice, but i dont really hear the drone. Maybe im deaf to lower frequencies.
I have a four-cylinder Audi A5 that is far quieter and more refined than the Lexus V6 is. So it can be done but I doubt Lexus will manage to. It seems their NVH engineers are asleep. They loaned me a new ES 250 and the engine was so loud above 2000 RPM that it was pretty bad. But below 2000 it was very smooth and quiet, unlike the 3.5 V6. Weird.
Have you driven a RX-450h? Mine is quiet & smooth. I can hear the engine, but there’s no drone. The 450h uses a CVT instead of the conventional transmission, but I doubt that changes a whole lot.
Just bought a 2022 RX350 F-Sport (Appearance package) this week.
I noticed the droning sound too on the first night I drove my 2022 RX350 home. I was driving in normal mode that evening and as I was getting closer to my house, it held the engine around the 15000 rpm and it caused a very audible droning/humming sound. I thought there's no way that I'm experiencing an issue already since I was coming from a BMW plagued with issues (the heater core blew at 1,000 miles). I slept it off and drove again the next day to pickup my significant other from work. As I approached around 59mph, the engine hovered at 1500 rpm and again I could hear the droning sound again. This time around, I noticed the slight vibrations in the footwell area leading me to suspect an exhaust resonance. Call me what you may, but I am sensitive to these type of things and do care for these little issues, especially when you're paying 60k for a brand new SUV. This is when I decided to do my own research and came across this thread. I am wholly surprised to see that Lexus/Toyota hasn't fixed this issue yet as it's obviously been around since 2016. I contacted my dealer and he said checked with the service manager and they haven't seen any service bulletin for the 2022 RX350 yet. I sent him the link to the L-SB-0003-18 (https://static.nhtsa.gov/odi/tsbs/20...64911-9999.pdf) and pointed out that my car doesn't have the new style exhaust pipe with the bracket and dampener. He pointed out that the SB is only up to the 2019 model and I told him that it was possibly related to it since the car hasn't undergone any major mechanical changes. Heck, they used the same exact backup camera in the 2016 RX350! I'll be updating you guys on Wednesday/Thursday once I drop off the car at the dealer next week and get the results back. In the meantime, I'll place an order for the $50 Toyota dampener part to see if I can fix it before Wednesday. Arghhhhhhhhhhhhhhhhh.
In my research, I saw that in other vehicles with certain RPM resonances, they had used 1/4 resonance pipes aka J-pipes aka Helmholtz tubes to cancel out the frequency, but not sure if I want to go down that route yet....
Got an email from DCH Toyota (NJ) saying that they didn’t have it in stock, so they’re ordering it and said it will take 2-3 days.
Am curious if there is any possible way to change the idle on a 2021 rx350 ?
Was playing with the idle a bit and if the idle was a bit higher or lower I am wondering if it would resolve the vibration I feel in the steering wheel only when sitting at a stop. I am guessing no because it would probably require a minor change to the firmware in the onboard computer ?
I just am having a difficult time accepting the fact that Lexus engineers would accept this as part of their design.
Am curious if there is any possible way to change the idle on a 2021 rx350 ?
Was playing with the idle a bit and if the idle was a bit higher or lower I am wondering if it would resolve the vibration I feel in the steering wheel only when sitting at a stop. I am guessing no because it would probably require a minor change to the firmware in the onboard computer ?
I just am having a difficult time accepting the fact that Lexus engineers would accept this as part of their design.
I have to say about every car I’ve owned the past 20 years has spells where they idle very smoothly, and other times you get some vibrations in the steering wheel etc. Same story with my RX 350 and prior Highlander, Depends on accessory load, temperature, load on the alternator, etc. I agree it’s a little irritating, but there’s probably really nothing that can be done about it.
The previous generation also had this exhaust drone. Was very noticeable on my 2015 RX350F.
The exhaust system is different between the 2 generations as Toyota tried to fix it, but has obviously failed. I just replaced the rusted steel clamps holding my 2 dampers on with stainless clamps. The 2 dampers cured my drone.
jim
Am curious if there is any possible way to change the idle on a 2021 rx350 ?
Was playing with the idle a bit and if the idle was a bit higher or lower I am wondering if it would resolve the vibration I feel in the steering wheel only when sitting at a stop. I am guessing no because it would probably require a minor change to the firmware in the onboard computer ?
I just am having a difficult time accepting the fact that Lexus engineers would accept this as part of their design.
I guess I’m missing something here; I don’t understand how changing the idle speed up or down, affects the droning issues. Idle speed is lower that the speeds reported for the droning noises & vibrations. What an I missing?
I'm not suggesting it would resolve the droning issue, I was referring to vibration I feel when sitting at idle in drive. I was wondering if changing the idle would help resolve the vibration due to the resonant frequency the pipes are experiencing. It's funny how if I slightly touch the gas when sitting at idle the rpm increases from roughly 720 to around 800 and I feel nothing.
I'm not suggesting it would resolve the droning issue, I was referring to vibration I feel when sitting at idle in drive. I was wondering if changing the idle would help resolve the vibration due to the resonant frequency the pipes are experiencing. It's funny how if I slightly touch the gas when sitting at idle the rpm increases from roughly 720 to around 800 and I feel nothing.
I’m going to make a guess, that the idle vibration you feel is common in front wheel drive vehicles. I’ve noticed it, but never considered it to be annoying. My 450h has a tiny bit of idle vibration, but it’s barely detectable. My Camaro is rear drive & I feel nothing in the steering wheel. That’s just a guess, but maybe you should have your car checked out to see why the vibration is so noticeable. Perhaps there is something wrong with a motor mount or even the tuning of the engine.
I’m going to make a guess, that the idle vibration you feel is common in front wheel drive vehicles. I’ve noticed it, but never considered it to be annoying. My 450h has a tiny bit of idle vibration, but it’s barely detectable. My Camaro is rear drive & I feel nothing in the steering wheel. That’s just a guess, but maybe you should have your car checked out to see why the vibration is so noticeable. Perhaps there is something wrong with a motor mount or even the tuning of the engine.
It’s just typical Toyota NVH mediocrity. I’ve had four Front Wheel Drive Toyota vehicles with the 3.5 V6 and they all vibrate at idle sometimes. Other times idle smooth as butter. Toyota products tend to be reliable, but they don’t do noise, vibration, and harshness very well. I can deal with a little vibration at idle sometimes, but the damn vibration and drone around 1600 RPM is driving me crazy.
So I crawled underneath my car today and installed the Toyota Part# 17581-31010. I had to remove the felt washers that were glued on the part because they were literally falling apart as I tried to slide it onto the exhaust clamp. I ordered some sorbothane washers from Amazon just so to do some further experimenting in the future. I installed the weight facing the passenger side only because it was closer to the exhaust pipe.
After taking a 10 minute drive on the highway, I could immediately tell that it definitely reduced the droning sound by a lot. I would say it reduced it by 95%. You would never be able to tell if it droned in the first place. The 5% is mostly from the slightest vibration I get in the steering wheel at 59mph/1500rpm. Highly recommend ordering the part and installing it before the catalytic converter*** as suggested in the post on page 133.
Last edited by OReliable; 11-05-22 at 08:27 PM.
Reason: Catalytic converter not resonator.
10-28-22, 08:12 PM
