For those that have an issue with the 2009 suspension noise (or I suppose any year model), please call the following person:

1-800-633-5151

After you get the prompts, speak the words: CASE MANAGER

Then ask for Paula (ID#54323)

Please inform her of the issue.

They are stating it is a characteristic of the car, but if enough people complain they will most likely issue a TSB for it.

Please let us know if you called and the response you got.

Thanks!

I would like to say I am glad that it isn't just me having this problem. The sound coming from the rear end of my sonata is unbearable. I had the struts replaced and the noise is still there. Mechanic took it apart - made some adjustments, quiet as could be. Three days later I think the sound is louder than
it was before!!!! Some days I just want to drive it into the lake!! HELP!! It is a 2005 and does have 150,000 miles on it - but like I said, I replaced the struts.
What to do now???

This is what I know about the 09+ sonata rear shock noise, The is from Hyundai Engineering,
Rear shock part# 55311-3K640, Same on both sides, is a softer shock, will reduce road noise
from the rear.they are calling it a "loose, hollow noise,Dumm noise in the rear" Now as far as
telling your dealer how you got this part# .....humm....good luck..But I will tell you will fix the
concern! If you look up the stock part # from that car its a different part # Hope this helps!!


Shawn

Shawn... I'm am not sure who is giving you this info, but they are yankin' your chain. Part #55311-3K640 is the standard rear shock absorber for an 07 and up Sonata. It is nothing special. It is what I have on my Sonata... and everyone else that has an 07 and above.

Im sorry you are right about 09, The problem they were haven was with 08 Part# 55311-3K040<---JUNK!!
used from 1/11/07-06/19/07 If you have this strut with noise they want you to use 55311-3K640 suppost to
be a good replacement, Not For the 09 if having noise in the rear, there saying to open rear seat to trunk test drive
an see if noise gets better. They know about this an curently are working on repair. Sorry for the miss up

Shawn

It is not really appropriate to list the personal names, ID, or contact numbers of Individuals or businesses here.

It is in the Terms of Service. I can't find the Terms of Service, but it should be there!

What is your problem here? He has a genuine concern and gave the number of the Hyundai customer service with the case manager. There should be nothing wrong with that. After all, these are the kinds of info we look for in a discussion forum. Why do you have be such a sourpuss, huh??

This post has been edited by dandaroy: Apr 8 2009, 04:14 PM

I don't doubt his problem. The number given is for HMA Customer Service. Paula is a Rep there. She takes

many Calls. Any Rep can try to help. Say "CASE MANAGER" at the prompt if you wish. It's not like Paula

knows the answer to this problem? Every NF Model since 06 has had suspension noise. Hyundai has a team of 900

Engineers, and one Paula! (IMG:style_emoticons/default/thumbsup.gif)

No maybe Paula is the only case manager that heard the complaint from Sonnie. Sometimes talking to the same person helps. And have you talked to the reps? They are not very helpful with non-routine complaints. So talking to a specific person helps. BTW, why are you so hot and bothered about Hyundai customer support's convenience? Are you on their payroll?? (IMG:style_emoticons/default/whistling.gif)

This post has been edited by dandaroy: Apr 8 2009, 05:11 PM

I'm sure glad we're getting more owners to make comments here.
My 09 Sonata Limited has the worst new car suspension I've ever had and I've had a lot of new cars.

My suspension is a little loud in the rear, I guess, and the ride is a bit hard, but I just attributed this to the bigger wheels and lower profile tires. I've driven an older Ford Focus with 16 inch wheels (the Sonata has 17 inch wheels, of course) and that had an extremely hard and loud ride. So I thought maybe that was the explanation.

17" tires are not that big of a deal and these tires are not that low profile... surely not a big enough deal to make this kind of noise. My wife's Azera has 17" tires and it doesn't make this kind of noise. My daughter's Mazda 3 has those very short low profile tires and it doesn't make this kind of racket.

I changed my tires from Hancock to Bridgestone Turanza with Serenity and went with a taller tire, but it still did not help.

It is really a bad suspension design.

I cannot imagine why the person designing these cars cannot get it right... surely it cannot be that difficult, although it obviously is.

Very right not the tires, Hyundai is fully aware of this concern! Talk to someone today about it
Still nothing yet for 09, There trying to say the same thing, "Empty Hollow 55gal drum sound"
But really they are really working on this concern! as of now no real "good" fix, Some have helped
the noise with sound damping tape in trunk, But I dont thinks thats it

Shawn

Yeah... sound deadening doesn't seem to help. I treated my entire car with Dynamat Extreme... here are some pics...

http://www.snapbug.ws/caraudio.html

It's pretty serious.

The car is quieter, but the rear suspension noise is very much still there.

WOW your right Extreme...Thats awsome!! I do bet that is a much quieter ride!! You done that
Right!! Sweet!!! I bet that took you an hour or two!! LOL

Shawn

Yeah... a few hours or two per day for several days. (IMG:style_emoticons/default/grin.gif)

Sonnie,

That is some serious sh*it! WOW! I could never do that myself, poor DYI skills. Can you describe how much quieter it got and in what respect do you think the noise is less? Also some explanation on the difference between your dynaudio system and the stock Infinity would be appreciated.

But man, I still can't get over all the Dynamat you put in. Did the Dynamat in the trunk help the suspension thumping from the back at all?

My main problem is the shifting of the car, the suspension does not bother me as much, although I know what you are talking about.

(IMG:style_emoticons/default/liebe011.gif)

This post has been edited by dandaroy: Apr 10 2009, 11:10 AM

The noise in the car definitely quietened down noticeably. My wife noticed how much quieter our car is over our friends 08 Sonata. We all go out to eat about 3 weekends out of the month and swap taking each others vehicles. There 08 has zero suspension problems, btw. We live where we have to travel about 7-8 miles down a gravel road, which will always tell the story on how quiet a vehicle is. My Sonata is very near as quiet as my wife's Azera, other than the suspension, of which the Dyanmat did not seem to phase.




Miles difference. The dispersion on the Dynaudio highs is very wide and helps to create a super wide soundstage and excellent imaging. They are by far the best I have ever had in a car... and as you can see from my car audio page (farther down the page), I have had quite a few systems. The midbass drivers are another story. Mismatched is a good summation on those. They are fair, but nowhere up to par with the highs. They simply cannot handle the power without bottoming out... and they are crossed over at 100Hz to boot. They are fine for normal and moderately loud listening, but if I get a hankering to crank it up, I have to be careful on some songs. I would probably like to replace those with something more stout, but at the moment I am too busy working on the home theater room.




I travel quite the bumpy roads on an almost daily basis, so I give a suspension quite the workout.

My 08 Sonata had transmission problems and I never could get them to get it fixed right. They worked on it 3-4 times and I finally said just keep it... I am trading it for an 09. Cost me about 5 grand. (IMG:style_emoticons/default/blink.gif)

Hello everyone, I was the one that started this thread and I have a 10k update. After 10k miles on a 2009 Limited v-6 I feel most of my suspension noise is coming from the front at low speeds. If you travel over a grassy surface you will see what I mean. The grass eliminates all tire noise so all noise is from the suspension. The sound is as if the ball joints were worn out already. The noise I hear from the rear isn't really suspension as much as tires. Drive your Sonata on a concrete highway and you will hear the sound like your riding on overinflated basketballs ( boing,boing,boing ) at every joint in the road. The sound deadining product I read about in this thread would probably help the tire noise in rear. I have taken it to the dealer only to told that ALOT of Sonata owners have the same complaint and that there is no known fix for the noise. I'm embarrassed to have riders with me who drive better cars because they always say " What's that noise?". It's sad that I have to wait until I can afford to trade the vehicle before I can be satisfied with a suspension. Help Hyundai Help!! Let us know what it's going to take to fix these cars! And why can't I find any aftermarket suspension parts. This body style has been out since 06.

I'm new to this forum but not new to Hyundai. I traded a '02 Elantra for a '09 Sonata. I was happy with my Elantra so decided to get a new Sonata. I'm not happy with the noise I'm hearing from the suspension in the Sonata. The way jiminflorida described the suspension noise was almost exactly how I described the noise in my Sonata to he dealer. I described the noise as a "tennis ball being shaken in a wooden box." Anyway, the tech did not hear anything. Since my wife drives the Sonata most of the time and is oblivious to most noises in the car, I will let this go until it drives me crazy or Hyundai issues a TSB to fix this noise. Thanks to all of you for the updates and experiences with your Sonata. It nice to know I'm not alone.