RC - 1st Gen (2015-present) Discussion about the new Lexus RC model

weird noise when I go bumpy/dirty road

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Old 06-24-15, 12:00 AM
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yooin14
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Default weird noise when I go bumpy/dirty road

Hi guys,

I recently realized that there is a weird noise when I go over bumpy or dirty road.
Now it bothers me so much. I cant really tell where it is coming from( looks like front but not sure)

It is not rattle but some noise I really cant explain.

does anyone have the same experience?
Old 06-24-15, 12:44 PM
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FUZCO
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Originally Posted by yooin14
Hi guys,

I recently realized that there is a weird noise when I go over bumpy or dirty road.
Now it bothers me so much. I cant really tell where it is coming from( looks like front but not sure)

It is not rattle but some noise I really cant explain.

does anyone have the same experience?
Oh boy. I know how much these idiosyncrasies can ruin the enjoyment of your car. My Volvo C30 had a rattle / clunk from the steering column but only when the steering wasn't at 12 o'clock and over uneven areas. Had the car for 3 years and no one could figure it out.

Hopefully someone will be able to help you out here.
Old 06-24-15, 02:23 PM
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jowsleyyy
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Is it the rocks/dirt kicking up into the wheel wells? I noticed that those were much louder in this car (The RC) compared to my Audi (A3)
Old 06-24-15, 03:41 PM
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GearHead69
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The inner fender wells are made of a Styrofoam like material as opposed to a harder plastic. When you go over the bumps are you in Sport+ mode? If you are try the Normal mode for a softer ride and see if that still happens. If might be that the EVS can't handle so many small bumps in rapid succession on a road. Just guessing at this point.
Old 06-24-15, 06:49 PM
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yooin14
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so this noise only comes out when the left front side of the car goes over bump road. ( not right side).

I was driving eco, normal & sport mode.
Old 06-24-15, 06:55 PM
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JADLS400
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My 1990 LS 400 w/99 K miles has both rear cv boots.leaking grease but does not generate any detectable noise from there. Do I need to replace the axles as well as the boots ? Will it require a 4 wheel alignment after the replacement ?
Old 06-25-15, 05:56 AM
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GearHead69
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Originally Posted by yooin14
so this noise only comes out when the left front side of the car goes over bump road. ( not right side).

I was driving eco, normal & sport mode.
If you can recreate the situation every time then I would take it in as it could be a bad Strut or the electronics for the strut is bad and not letting it adjust correctly.
Old 06-25-15, 02:56 PM
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Originally Posted by yooin14
so this noise only comes out when the left front side of the car goes over bump road. ( not right side).

I was driving eco, normal & sport mode.
I have the same problem on the right side. Just pulling into my driveway or over a speed bump slowly I hear a "squeaky eeee eeee noise"
Idk how to explain it
But it dosnr sound normal
Im gettin it check out soon
Old 06-25-15, 10:28 PM
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yooin14
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I think I found the issue. The noise was being created under the hood. I had to set very higher position of the circular rub pads that were in under the hood. and make sure the both pad are in the same height. After changing that, I hear no more noise.
Old 06-25-15, 11:19 PM
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yooin14
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For the reference about the the circular rub pads, I am talking about the one with the red highlights.
The picture is not RC but RC has one on each side.

Last edited by yooin14; 06-26-15 at 03:58 PM.
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