2016 RX 350 Excessive noise and vibration
01-05-20, 10:49 AM
#1741
Pole Position
01-06-20, 01:49 PM
#1742
Driver School Candidate
Join Date: Dec 2019
Location: tx
Posts: 6
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service trying to fix different rattling noise, install noise kit, fix the tire and balance, one tire index is bad. Not sure if this will help at all with the wind noise and vibration, to me it’s more like an insulation issue. Car still at the shop, almost three weeks now. Also spoke to sale, they said I can trade in. I am not willing to trade in a take a loss. The 2020rx loaner ride is very nice though, which it is supposed to be. I think RX still a good car, this is just an unfortunate situation, the frustrating part is sale department doesn’t really want to help. Make sure you test drive extensively, there’s still a possibility that issue may come up later.
01-06-20, 03:46 PM
#1743
service trying to fix different rattling noise, install noise kit, fix the tire and balance, one tire index is bad. Not sure if this will help at all with the wind noise and vibration, to me it’s more like an insulation issue. Car still at the shop, almost three weeks now. Also spoke to sale, they said I can trade in. I am not willing to trade in a take a loss. The 2020rx loaner ride is very nice though, which it is supposed to be. I think RX still a good car, this is just an unfortunate situation, the frustrating part is sale department doesn’t really want to help. Make sure you test drive extensively, there’s still a possibility that issue may come up later.
01-09-20, 09:16 PM
#1744
Driver School Candidate
service trying to fix different rattling noise, install noise kit, fix the tire and balance, one tire index is bad. Not sure if this will help at all with the wind noise and vibration, to me it’s more like an insulation issue. Car still at the shop, almost three weeks now. Also spoke to sale, they said I can trade in. I am not willing to trade in a take a loss. The 2020rx loaner ride is very nice though, which it is supposed to be. I think RX still a good car, this is just an unfortunate situation, the frustrating part is sale department doesn’t really want to help. Make sure you test drive extensively, there’s still a possibility that issue may come up later.
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Ashkalan (01-14-20)
01-11-20, 02:22 PM
#1745
Driver School Candidate
new center exhaust RATTLE after TSB
I just got the car back from Tustin lexus after TSB to replace center exhaust and ECU software update. The drone noise is better but still fairly noticeable, and changed from 1800 rpm to around 1200 rpm. I went underneath the car to see what's changed and heard the rattling noise from the new center exhaust... can anyone verify if it's normal?? Thanks!
new center exhaust after TSB
01-11-20, 09:14 PM
#1746
Driver School Candidate
01-11-20, 10:16 PM
#1747
01-14-20, 11:17 PM
#1748
Driver School Candidate
Hi, I bought 2016 RX 350 in June 2019. It has same problem that you have/had. We don’t have dealership in our town. I have to drive 4 hours to bring it to dealership. One time I did, and they said that there is no problem with my vehicle. But still I have lots of noise and vibration at low idle rpm and on road. I am going to call them tomorrow, is it under warranty or I need to pay? What should I exactly asked them to replace and update. I would appreciate if you can share your experience.
01-15-20, 01:30 AM
#1749
Basically, it is in the wrong gear. Downshift one gear and the buzzing is gone. This is what used to be called "lugging" -- using a gear too high for the engine speed needed to move the car at the desired road speed. The result is, the exhaust and car body resonate. Chasing fuel efficiency numbers, they've programmed the shift points to minimize engine rpm, and on a flat road at steady speed it's not noticeable, but head up a mild hill from a stop or a slow turn, and there you feel it. I'm afraid it's a design feature of these models -- I don't think a "fix" is in the cards. You can prove it to yourself by putting the shifter in manual shift mode, and accelerating up the same grade while manually shifting when if feels like the engine is at a proper rpm for the next gear.
Last edited by dibl; 01-15-20 at 01:37 AM.
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ravenuer (01-15-20)
01-15-20, 03:48 AM
#1750
Basically, it is in the wrong gear. Downshift one gear and the buzzing is gone. This is what used to be called "lugging" -- using a gear too high for the engine speed needed to move the car at the desired road speed. The result is, the exhaust and car body resonate. Chasing fuel efficiency numbers, they've programmed the shift points to minimize engine rpm, and on a flat road at steady speed it's not noticeable, but head up a mild hill from a stop or a slow turn, and there you feel it. I'm afraid it's a design feature of these models -- I don't think a "fix" is in the cards. You can prove it to yourself by putting the shifter in manual shift mode, and accelerating up the same grade while manually shifting when if feels like the engine is at a proper rpm for the next gear.
The following users liked this post:
Ashkalan (01-15-20)
01-15-20, 10:04 AM
#1751
Basically, it is in the wrong gear. Downshift one gear and the buzzing is gone. This is what used to be called "lugging" -- using a gear too high for the engine speed needed to move the car at the desired road speed. The result is, the exhaust and car body resonate. Chasing fuel efficiency numbers, they've programmed the shift points to minimize engine rpm, and on a flat road at steady speed it's not noticeable, but head up a mild hill from a stop or a slow turn, and there you feel it. I'm afraid it's a design feature of these models -- I don't think a "fix" is in the cards. You can prove it to yourself by putting the shifter in manual shift mode, and accelerating up the same grade while manually shifting when if feels like the engine is at a proper rpm for the next gear.
01-15-20, 12:06 PM
#1752
I'm not the expert on it, but there is an "adaptive learning" function that changes the shifting behavior of the 8-speed transmission, based on your habitual way of driving the car. You can find posts on this forum where people have "fixed" the shifting issue by going to higher octane fuel, only to have it revert to the lugging and hunting after a period of time with the new fuel. Probably that would explain why it only began to exhibit the behavior after several hundred miles of driving.
01-15-20, 12:26 PM
#1753
Intermediate
I'm not the expert on it, but there is an "adaptive learning" function that changes the shifting behavior of the 8-speed transmission, based on your habitual way of driving the car. You can find posts on this forum where people have "fixed" the shifting issue by going to higher octane fuel, only to have it revert to the lugging and hunting after a period of time with the new fuel. Probably that would explain why it only began to exhibit the behavior after several hundred miles of driving.
01-15-20, 12:39 PM
#1754
I'm not the expert on it, but there is an "adaptive learning" function that changes the shifting behavior of the 8-speed transmission, based on your habitual way of driving the car. You can find posts on this forum where people have "fixed" the shifting issue by going to higher octane fuel, only to have it revert to the lugging and hunting after a period of time with the new fuel. Probably that would explain why it only began to exhibit the behavior after several hundred miles of driving.
01-15-20, 01:20 PM
#1755