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2009-2010 Hyundai Sonata

1006 messages,  Last post on Nov 24, 2009 at 6:17 AM

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#695 of 1006 Re: Noise when going over bumps [techmcag] by gmctruck Nov 22, 2008 (6:26 am)
Replying to: techmcag (Nov 21, 2008 11:33 pm) "The dash pops and cracks like crazy."   My '08 Sonata also has this problem. I think the noise comes from where the dash touches the windshield. The car body flexes to some degree when going over bumps and uneven pavement causing the popping noise and it's a bit worse in cold weather. I was hoping Hyundai would have fixed that in the '09 model redesign by putting a rubber strip where the dash meets the windshield... but looks like that didn't happen.   I also had a problem with the clove compartment door making noise and had to put extra stick on rubber pad stops between the top edge of the glove box door and the dash to tighten up the door. The latch design holding the glove compartment door shut is all plastic with no mechanical latch adjustments possible which can cause the door to rattle when driving on bumpy roads. Replies to this message: jm1996 (Nov 22, 2008 4:43 pm) gmctruck (Nov 22, 2008 9:09 pm) ponggod (Nov 22, 2008 9:28 pm) NewKah09 (Nov 23, 2008 2:08 pm) 3rdjersey (Nov 23, 2008 5:32 pm) stephen987 (Nov 24, 2008 3:30 am) ctc1 (Nov 29, 2008 3:39 pm)
#696 of 1006 Re: Noise when going over bumps [gmctruck] by jm1996 Nov 22, 2008 (4:43 pm)
Replying to: gmctruck (Nov 22, 2008 6:26 am) I also noticed this and was prepared to take it in, but the noise seems to have reduced greatly in the cold weather. Could it be AC related? Replies to this message: gmctruck (Nov 22, 2008 9:09 pm)
#697 of 1006 Re: Noise when going over bumps [jm1996] by gmctruck Nov 22, 2008 (9:09 pm)
Replying to: jm1996 (Nov 22, 2008 4:43 pm) I don't think it is related to the AC. I think it is more related to expansion and contraction of the materials as the temperature changes and driving on rough pavement. I've noticed the noise less now that the car is a year old, but I still hear it when the weather is really cold.
#698 of 1006 by peridoc Nov 22, 2008 (9:26 pm)
Have you tried tracking down the noises with any service people, or is it just not worth the effort? I also have a rattle coming from my back deck that is caused by the subwoofer. They have looked into that before but have not completely gotten it out. I think that is much easier to fix and track than the noise coming from the dash. I have not been able to pinpoint where it is, but you are right...it sounds like it is coming from up near where the dash and windshield meet. I really wish there was a fix for it as it has gotten worse for me in the colder weather. It was not there before October or so. Replies to this message: gmctruck (Nov 22, 2008 10:19 pm)
#699 of 1006 Re: Noise when going over bumps [gmctruck] by ponggod Nov 22, 2008 (9:28 pm)
Replying to: gmctruck (Nov 22, 2008 6:26 am) I've just recently begun noticing this too in the '09 Sonata I just bought less than two months ago. It's only occasional and not really severe, but it's got me wondering if it's something that's likely to get worse over time. It's tolerable right now, but if it gets any worse, it's really going to affect my overall impression of the car.
#700 of 1006 Re: [peridoc] by gmctruck Nov 22, 2008 (10:19 pm)
Replying to: peridoc (Nov 22, 2008 9:26 pm) I haven't taken it to the dealer because it isn't severe enough to warrant tearing out the dash, which is what I think will be required to fix the problem for good. Hyundai really needs to address this on the newer cars and I'm surprised to hear the '09's have it as well.   Another thing I discovered is the windshield glass isn't smooth. You can't see it visually, but I can feel a ripple in the glass with my hand and found it while cleaning the windshield. These things do affect my overall impression of the car.
#701 of 1006 Re: Noise when going over bumps [gmctruck] by NewKah09 Nov 23, 2008 (2:08 pm)
Replying to: gmctruck (Nov 22, 2008 6:26 am) My '09 Sonata GLS does something similar, the windshield makes a crackling sound when going over any road irregularity other than the slightest bump. Exactly like the sound the windshield makes when heavy rain hits it. Replies to this message: 3rdjersey (Nov 23, 2008 5:32 pm) stephen987 (Nov 24, 2008 3:30 am) ctc1 (Nov 29, 2008 3:39 pm)
#702 of 1006 Re: Noise when going over bumps [NewKah09] by 3rdjersey Nov 23, 2008 (5:32 pm)
Replying to: NewKah09 (Nov 23, 2008 2:08 pm) My 08 Sonata had the same noise at the base of the windshield. It only did it when the outside temperature was below 48 degrees. I got a can of silicone spray and sprayed it into the opening between the dash and windshield. I noticed a vast improvement almost immediately and now one year later the nosie is completely gone.
#703 of 1006 Re: Noise when going over bumps [NewKah09] by stephen987 Nov 24, 2008 (3:30 am)
Replying to: NewKah09 (Nov 23, 2008 2:08 pm) For what it's worth, my Accord makes a very similar noise under those circumstances. Then again, it's got 78k miles on it.
#704 of 1006 Re: Noise when going over bumps [NewKah09] by ctc1 Nov 29, 2008 (3:39 pm)
Replying to: NewKah09 (Nov 23, 2008 2:08 pm) I had 2 Accords that made the same sound. Was so bad in my 86 I had to trade it in because it was driving me nuts. Spent a lot of time and money trying to fix but never found the cause!

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