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Hyundai Sonata Front Suspension "Thunk"



  • Kirstie_HKirstie_H Posts: 11,025
    I'm glad you got the vehicle you wanted, but yelling at the sales manager isn't very nice. :( Keep in mind that sometimes when they sell NEW vehicles, they aren't even aware of problems that will crop up later in that model. Also, if you came in originally shopping for a Sonata, he sold you what you asked for.

    Hopefully, some of our members can find a less dramatic resolution to the problem!


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  • I have a 2006 Sonata LX. It's been a pretty good car except for the suspension noise. (Thunk, Thunk). I had the rear struts replaced and went through the test drives with the "it's normal" response. It's been 4 years of "living with it." I said to myself I'll get a different car next time. Now I see the 2011 model is going to be out soon. It looks nice! Before I fall for a pretty face though, I'm going to want to take a serious test drive. Ideally I'd like to test the car for 60 days ala GM, and then decide. Even a few days would be nice. How about it Hyundai?
  • backybacky Twin CitiesPosts: 18,907
    If Hyundai sells some of those 2011 Sonatas to fleets (likely they will), that is a good way to go for an extended test drive if Hyundai doesn't offer such a thing. Might cost you $100-200, but that's a small price to pay to make sure it's the car for you. I've learned a lot about cars by living with them as rentals.
  • znarfznarf Posts: 2
    I bought a 2008 sonata in missouri, test drove it in an area with all smooth roads. I drove it around the area I live for about a month and was happy with it, everything seemed fine. I had driven a couple other korean models as rentals in Mexico, and found them to have good suspensions, so I assumed the sonatta was ok too. Big mistake. I was driving it down to mexico when I hit some rough pavement in arkansas, and thought, this is awful! Rough, loud, something must be wrong with this thing. Then the road got better and I thought maybe it was just some really bad pavement. The next two days were ok, good roads all they way to the border of mexico in texas. After passing monterrey, even though I was on toll roads, the slightest imperfection in the road caused jarring movement and noise. A bad bump was like a punch in the gut. After many hours it just wears you out. I thought that maybe an unscrupulous dealer had sold me a car that had been wrecked, but after reading these blogs I see that that´s how these cars are. I´ve had cars with bad struts, that´s not the problem. I don´t know what it is, but it´s a nightmere down here in mexico - I don´t even want to drive it. I be back in Missouri in a few months and will sell it where the roads are smooth, if I can find a buyer. What´s strange is I´ve read a few reviews of the sonata and most of them mention a smooth ride, and on yahoo autos I didn´t find anyone complaining about the ride. I´m really disapointed, it seemed like a nice car, but rides way worse than my intrepid which is twelve years old and has 185,000 miles.
  • espo35espo35 Posts: 144
    Have you checked your tire pressure? Should be 30 lbs. Air expands when hot, about 1 lb every 10 degrees. If your air pressure was set in Missouri when it was 50 F and now you're in Mexico at 90F, your tires will be around 35 lbs. and you will absolutely notice the difference in ride quality, especially on rough roads.
  • znarfznarf Posts: 2
    Thanks for the tip, I did check the tires and they were a little high. But then I lowered them to a few pounds below the recomended cold pressure, and drove another six hundred miles, and it wasn't much better. These cars have a problem. I'll take it to hyundai when I get back to the states, but judging from these blogs, that will be a waste of time. Fortunately, I have a pair of noise canceling headphones, they help with the noise....
  • kaypeakaypea Posts: 10
    After having no luck with the dealer I bought the car from I decided to try another dealer in the area.This time the service manager knew right away what I was talking about with the thunk sound.He even mentioned online forums like this one without me even bring it up.He also told me before even looking at the car or driving it that replacing struts is no guarantee-not too reassuring.He also asked me where the noise was coming from and I told him mainly from the passenger side front.

    A tech drove the car and they wound up replacing the front passenger side strut-that's all they would go for.The car still makes more noises than I would like when going over various holes and ruts in the road but at least that annoyoing rattle where it sounded like something was broken or loose is gone for now and the car does ride somewhat better.
  • Interesting...Hyundai has just issued TSB 09-SS-010 for the Elantra.

    SUBJECT: Front Strut Noise.

    DESCRIPTION: Some Elantra, & Elantra Touring vehicles may exhibit a noise originating from the front struts when passing over bumps or dips at speeds of 10 - 16 mph.

    The fix is the addition or replacement of the "Bumper Stopper"; PN 54626-27000FFF in the front strut assemblies.

    Let's see if they issue anything similar addressing the Sonata noise issue. I won't hold my breath!
  • Steven, I am not sure about the 2009 model, but I own a 2010 and have had the car in because of a front suspension "thunk" noise. The dealer said nothing was wrong with is, however the noise still exists. I am now guessing it is just the suspension design.
  • I have a 2009 Sonata. I have had it in many times for suspension noise. I even started a case with hyundai consumer affairs. They ended by saying that if the service people can't duplicate the noise, if they say " it's normal for the car", there is nothing they will do. I have posted here many times since I own this car. I can see that with all I have done and all that everyone who has this noise has done that Hyundai is going to do nothing about these cars. I hope people read these posts and see that if you have a problem with a hyundai you are out of luck. I wouldn't buy another one for half price.
  • I looked up the review on the 2010 Sonata on consumer reports and they mention that the suspension noise intrudes into the cabin. So it is certainly a widespread problem and most certainly Hyundai knows it.
  • My 2009 Sonata, which i bought two weeks ago, also has that awful front suspension thunk. Going over almost every little hole feels like the front axle is gonna fall apart.
    When driving this thing, i'm constantly looking for any unevenness on the road in order to go around it, cuz i just hate hearing that thunk and feeling it in the steering wheel.

    Those that claim it's just us imagining things are crazy. Read all the professional reviews, for God's sake!
    This is not my first car, you know. In fact, this is the newest car i've ever owned, and right away i noticed that something wasn't right. I've never heard such thunking/thumping on any of my older high mileage cars before.

    What i'm hoping now is that Hyundai will look into it and find out what part is responsible for that noise and issue a recall. It's probably something very simple, like a rubber piece for the strut somewhere that needs to be redesigned.
    I believe they just did a recall for the Elantra for front suspension noise; a redesigned bumper stopper was found to be the culprit.
  • I hope the fact that the brand new redesigned 2011 Sonata that is supposed to start becoming available this month will not mean that they will not work on a suspension fix to the 2009 and 2010 Sonatas. I have a 2009 which i bought brand new in June 2008. I am considering trading it for a 2011 because it looks awesome and because I am sick of the suspension noise of my 2009.
  • Why would you trade in your car and buy a new car from the company that sold you a car with a suspension problem? You will lose a lot on trade in. If you do want to get rid of it you should give your business to a company that backs up their cars not Hyundai.
  • targettuningtargettuning Posts: 1,371
    And exactly which auto company would THAT be? As far as I can determine by just scanning through these sites each and every one of them has someone pissed at them about something or another. Guess what, you can't please all the people all the time and if you have found the perfect car congrats.
  • I guess you are a person who doen't own a Sonata.
  • targettuningtargettuning Posts: 1,371
    Correct, not currently but we have owned prior Hyundai products and have great experiences both with the product and the company as represented through their dealers...on the other hand ask me about Honda and specifically the newest generation Civic. This all leads me back to my previous post. There isn't a car manufacturer that doesn't have unresolved issues and owners with cars having those issues who don't believe the company is listening to their complaints and resolving them 1) at all, 2) fast enough, 3) completely enough or 4) permanently. You simply cannot please all the people all the time try as you may...period!!!
  • I would have to agree. Although I am not happy about the suspension issue on my 2009, I do think all cars have their issues. I think Hyundai has the ability to get it right on the new model. Before I would buy one, I would definitely take it out on a bumpy road to make sure I am ok with the suspension. Of course that does not mean there will be some other issue or issues that will bug me about it. I do expect to lose money on depreciation if I sold the 2009 for a 2011 but it might be worth it to me. I would expect their to be no discounts and rebates when the new ones first hit the showrooms, so probably would pay to wait a few months. Also would give a chance to look on forums like this and see if the new owners are complaining alot about particular issues. Maybe if I had had checked some forums back in June 2008, I would have seen the suspension issue and would have test driven on a rough road and maybe not bought the vehicle.
  • Just went through the tire balancing issue with the 2004 Elantra.After replacing 3 bent wheels, due to the previous owner running low on air, replacing the Coopers with Michelins still had the vibration.The hubs where the wheels fit into build up rust. Remove the tire from the hub and put it on another hub without wire brushing the wheel and hub and you will get a tire mounted with a wobble.Also you do have to use the right Hunter balance machine- My local place tried and failed-I found a Firestone place in Oxford Valley Pa by the Mall who guaranteed they would fix it and they did. I traded the car for the 2009 Sonata SE and test drove it,a demo car, before I bought it,listening for the thump.I occasionally hear the tire noise, 17" and the front and rear passenger side thunk. I had the same front noise in a 1997 Cadillac, characteristic of an unloaded ball joint bottoming. The rear sounds like a loose shock on occasion with a light load.The car handles like my Mustang GT, with a bit softer ride- I live in NJ-Have had it on Catskill Mountain roads at high speeds and it did very well with no suspension noise or chassis noise-It is a great car.
  • gslav1gslav1 Posts: 23
    Hello, Has anybody received any help from Hyundai as to repairs for the front suspension?
  • Last time I talked to Hyundai consumer affairs they told me to take the car to a different dealer to see what they would do then get back to them. I haven't had time to do that yet. I don't think I will get much help from a dealer that didn't sell me the car. However, I may still try. I will post if anything comes of it.
  • I think what is wrong with the suspension is the shock absorbers, There is nothing dealers can really do to make it better. If they decide to change anything in the suspension, then they'd be using the exact same OEM Hyundai parts. A set of aftermarket shocks would probably make it a lot better.

    Many Kia Optima(essentially the same car as Sonata) owners are reporting the exact same front suspension noise on their cars. What makes me think it cannot be anything else but the shocks is that Optima has a different front suspension (MacPherson struts) as opposed to double fish-bone on the Sonata, and still the noise is there.
  • gslav1gslav1 Posts: 23
    Hello you are right it is the struts or shocks. I had my front shocks replaced and it solved the problem Hyundai paid for it and they admit that there is a problem, you should push your service dept. to look into this!!
  • lenstanglenstang Posts: 68
    edited February 2010
    Is your car a 2009?
    Did they replace the front and rear struts?
    Can you give me the replacement part numbers?
    Did it make a big difference?
    I would like to try to get a dealer to do that for me.
  • I have a2006 with 20,000 miles and have the same problem with the front end what year is your car and do you know the part no for the shocks
  • gslav1gslav1 Posts: 23
    Hyundai replaced the front struts,they say there is no fix for the rear noise. The part No. is: 54611-3K680
    This fix Helps with the noise And really improves the handling and ride.
  • franmartfranmart Posts: 16
    what year is your car my car is a2006
  • cliff5cliff5 Posts: 5
    I am would be very interested to communicate more with you about this issue, and in particular how you went about achieving what you did. My 2010 now has 6700km and has has the noise/ride/handling problem since about 200km. # time returned, "no problem found" I also have issues with transmission (manual) and I think this is associated to the fact that on a full tank I cannot get a read of less than 11L/100 on the gas (50/50 highway/city) which is considerably more than the stats. posted in the brochure, which are: CITY.HWY.- 9.7/6.2 You don't need to be a genius that which ever way you work it 11 is suspicious.
    gslav-if you can e-mail me, I'd love to 'pick your brains' so to speak. Thanks, Cliff.
  • gslav1gslav1 Posts: 23
    My car is a 2009 sonata GLS
  • fragilemnfragilemn Posts: 16
    I noticed Monroe has shocks and struts for a 2009 Sonata. Has anyone installed these?
    Also noticed KYB seems to be adding more 2009 Hyundai models to their offerings so hopefully soon we will see some for the Sonata.
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