Last post on Dec 12, 2012 at 10:08 AM
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Hyundai Sonata, Sedan
#471 of 491 Re: 2007 Hyundai Sonata Front Suspension "Thunk" [dgc500]
Oct 25, 2010 (8:10 am)
The "thunk" on my 2006 was fixed with replacement of the left strut. I actually had a guy at the Firestone store look at it for me while I had it in for a brake inspection. Pushing down on the left fender while holding a finger on the top of the strut mount, we could feel a vibration in the mount itself. The thunk was more prominent on the left than on the right. I took the car to my dealer and explained how we found the problem so they checked it out and agreed it was a "weak" strut. They ordered a new one and, after three weeks to get the strut in, they replaced it and the thunk is gone.
#472 of 491 Re: 2007 Hyundai Sonata Front Suspension "Thunk" [dgc500]
Nov 30, 2010 (10:26 pm)
I have an 05 Sonata! Different body style than yours, but same problem. I get it back from the dealership tomorrow after being there for 24 days. I took it in for the very same symptoms you described. Noticeable squeaking sound in right front area most noticeable during the final inches of stopping and first stages of going. Diagnosis! Bad motor mount bearing! Cost! $159.00. The biggest problem is that this noticeable sound was only caused by the undetected sound of the defective strut, spring assembly and various bushings and bearings! Total cost of repair over $600! I'll be go round and round with the dealer tomorrow. I bought this car new and complained of some suspension noise before the car had 20,000 miles. But of course the technicians could never hear the noise when I would take the car in for regular routine maintenance as is mandated by the Hyundai company. I know you are far away from where I am, but you're welcome to contact Friendship Hyundai in Bristol TN and ask for some new knowledge of this problem! According to their sources, it's expected that struts only last about 50,000 miles! Funny! I've never replaced one on the Honda's, Nissan's, Fords and Chevy's that I've owned in years past. No doubt this problem has soured my overall satisfaction and brings renewed concerns to the overall engineering of it.
#473 of 491 Re: 2007 Hyundai Sonata Front Suspension "Thunk" [jal012773]
Nov 30, 2010 (10:27 pm)
Was the repair covered under warranty?
#474 of 491 Re: 2007 Hyundai Sonata Front Suspension "Thunk" [wayne021360]
Dec 01, 2010 (3:49 pm)
It's true that any and all suspension components are deemed wear items after 50k miles, but with the Hyundai Warranty, they should have been covered up to 60k miles. You may have never replaced them on your previous cars and that may be becaused they never wore down. I have an 06 Sonata with over 74k miles and I have no problems with my suspension. I've run across many Ford's and Chevy's that need front suspension repairs before and after 50k miles. Pretty much depends on which car you got out of the bundle that was made with a suspension component that would fail before it's wear time. The worst concern a tech can diagnose is a noise concern. Some people have better hearing than others, just the way of the world.
#475 of 491 Re: 2007 Hyundai Sonata Front Suspension "Thunk" [wayne021360]
Dec 02, 2010 (7:38 am)
Actually the shocks and struts wear so gradually the driver usually never notices the change in damping ability. It is usually a leak that finally indicates a shock or strut is kaput and of course by the time it leaks (usually but not always) it has not been doing its job for years and/or thousands of miles. So, the fact you never changed them out on your previous cars means little, you may have never felt they were bad. I have a 95 Dodge that had the original struts and shocks until well past 150,000 miles (I know, I ignored them even though intellectually I knew they were shot) The car didn't feel THAT bad but after replacement...wow!!! My point is this...those items are usually on their way out by 50K miles but almost nobody changes them at that mileage, why bother the car feels fine, right?
#476 of 491 2006 Hyundai Sonata lower control arms and bushings replacement
Feb 08, 2011 (8:59 pm)
I have a 2006 Hyundai Sonata with the "thunk" symptoms. My mechanic said that bushings in both lower control arms are worn out and recommended both lower control arms replacement. I would like to ask a few questions:
Can the bushings be replaced without lower control arms replacement?
Are the after market lower control arms available or only OEM parts?
What is a ballpark cost for both lower control arms replacement with OEM parts and time required?
#477 of 491 Re: 2006 Hyundai Sonata lower control arms and bushings replacement [yul711]
Feb 10, 2011 (1:32 pm)
You can replace the bushings without the lower control arms and can use OEM or aftermarket parts. Replacing the bushings only should be around $250.00 or so parts and labor. If you decide to replace the control arms, you'd be looking at about $900.00.
#478 of 491 Re: 2009 Sonata "Thunking" [lenstang]
Feb 10, 2011 (3:48 pm)
Just joined and am a used car owner of a 2009 sonata limited. Heard the thunking noise going over "down/up" bumps not so much up/down bumps and commented to the salesman that it needed to be fixed. He said they would look at it but ran out of time but "not to worry" was covered under warranty. Well...I bought it. Probably the cleanest used car with 27K on it I have ever seen. Well, first time i bought it in for the noise as you all have said "nothing is wrong" all is tight. It only does it on the right front side. Unfortunately for the dealership i am an automotive diagnostic specialist, so here goes on some things to check. The sonatas around the 09 area, which by the way suspension is redesigned in the 2011 models, is very cumbersome with control arms, control arm links, strut fork and strut fork bushings to lower control arm and the list goes on...not a great design. First thing to check is the strut fork where the bottom of the strut tube slips in and is pinched in place, the strut fork bolt was not fully tight and the strut tube showed signs of moving up and down (clean area about 1/4 inch), then look at the lower ball joint boot and make sure it is not deformed, should be even all the way around, finally, open the hood and near the front press on the frame so the suspension moves up and down and look at the strut mounts as seen through the mounting area. If the strut mounts are worn the round part will move up and down a tremendous amount...they should only move a little up and down. Mine moved a ton...so I told the dealership what to do and they replaced the entire strut assembly, mount and all, not the coil spring and then of course seated and tightened the new strut...on a scale 1 to 10 10 being zero thunking at all it went from a 1 to an 8.5...not bad...i feel the rest of it is probably in the ball joint and the design...hope this helps
#479 of 491 Re: 2006 Hyundai Sonata lower control arms and bushings replacement [LASHAWN]
Feb 11, 2011 (5:44 pm)
When is it advisable to replace the whole lower control arms assembly vs just only all bushings replacement, if the arms are not rotted or bent?
#480 of 491 Re: 2006 Hyundai Sonata lower control arms and bushings replacement [yul711]
Feb 15, 2011 (5:50 pm)
Only when damaged or just for piece of mind.