IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

does anyone have underbody rattling issues?

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Old 01-12-15, 01:13 AM
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Akrkwk
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Last edited by Akrkwk; 03-09-15 at 05:37 PM.
Old 01-12-15, 10:12 AM
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AndyL
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Originally Posted by Akrkwk
When going over center dividers with reflectors or ruff road
my car makes loud rattle sounds coming from underneath

Took it to the dealership twice and had the parking brake tightened which they think its the issue but still rattles
Here is possible 2nd lemon lexus in our family....
Does the sound coming from the front bumper and under?

If looking squarely at the front bumper, there are two plastic flaps attached with screws (in the case of non F Sport IS) under it..

I find the flaps sometimes could hit something in the pavement joint when exiting/entering a mall if the pavement joint has some imperfection. You may check if the flaps got screwed up/loosened.
Old 01-12-15, 10:50 AM
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jbkhat303
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I had rattling that turned out to be a loose heat shield.
Old 02-06-15, 02:21 PM
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Akrkwk
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Update They tightened the parking brake line for the third time and it only lasts a couple days and comes right back again I filed an case with lexus HQ and see whats going on with my car

They tried to say its normal sound
Old 03-01-15, 01:36 AM
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Lex2103
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Just got a brand new is250 f sport to replace the one I got 2 months ago, why? I had rattles coming from center console after 2 weeks of driving it, took it in to service, fixed the issue. A week later, 2 other rattle/buzzing sounds started coming from the glove compartment and AC vent on driver side. Was gonna wait until my 5000 miles service to fix the new rattles, but the rattle from center console came back and I couldn't wait anymore. Brought the car to service again and while test driving my car after fixing the rattles, they discovered a 4th rattle coming from the stereo system area. Asked to speak to the head of customer service and asked me what do I wanted to do, mentioned the lemon law and how I didn't want my car back. GM of dealership called next day and asked when I want to come in and get a different is250. I had a 2009 is250 and never heard any of the sounds I heard on the 2015. Good luck!
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