2008 Hyundai Sonata: grinding or squealing brakes

Filed Jan 27, 2016 · Brakes · 66,000 miles · CA

I've had the breaks grinding noise coming from the front breaks when driving and use braking. It seems that the brake assembly was coming loose and need to get it fixed with a workshop nearby

Filed Sep 2, 2013 · Brakes · 43,000 miles · OH

Grinding noise on rear driver's side brakes--discovered missing bolt on caliper frame, brake pads badly worn. All other brake pads in great shape, showing little wear. Car is driven in rural area, with very little city driving. When I went to hyundai to buy a new bolt the parts guy said "this happens all the time" I think there must be something wrong here. Also checked on line finding I'm not the only one having brake problems on the rear wheels.

Filed May 24, 2012 · Engine · 86,300 miles · MI

Driving on I-94 in battle creek, mi, the 2008 sonata, after making a ticking noise for a year (which the dealership would not look at) began to make a grinding noise and something flew out of the engine and smoke came pouring out of the vents. I pulled to the shoulder on this busy interstate and called roadside assistance from hyundai. They sent a wrecker, and when the car was lifted, all of the oil was on the road. They towed it to the nearest dealer 30 miles away in kalamazoo, mi and they told me that a rod and piston had flown out of the bottom of the engine of the car. After doing some research, there seems to be a problem with faulty crank rod cap bolts. The ticking I think was from the rod cap that had come off. As of now, they are not doing anything under warranty awaiting oil change receipts. Please force a recall soon, as this could be an extremely dangerous situation. Someone could have been killed by the flying piston. Luckily it flew off to the side of the road.

Filed Feb 28, 2012 · Brakes · 16,000 miles · PA

The braking system on this vehicle is poorly engineered and extremely frustrating to the car owner. After 16,000 miles, my rear brakes began squealing. After inspection, it was determined that the back brakes are sticking on and grinding off against the rotor. This is a recurring problem that can not be fixed, with multiple replacements the only choice. In the four years I have owned the vehicle, I have gone thru 5 sets of brake pads and 4 rotors, with no end in sight as long as I keep this car.

Filed Jan 16, 2012 · Brakes · 25,000 miles · NJ

Rear brakes on my sonata started grinding at 25000 miles. Contacted hyundai headquarters by email and they stated the brakes were out of warranty and no recall on this problem. I was informed by them to take it to the hyundai dealer. Since this should not happen at this mileage I had taken it to my mechanic who is state certified. Hyundai needs to do a recall on this safety problem. I have kept the email response that hyundai headquarters sent to me.

Filed Jan 1, 2012 · Brakes · 15,968 miles · PA

Purchased demonstrator car with approximately 2,500 miles for normal use. Rear disk brake noise at 15,976 miles required both rear brake pads and rotors to be replaced under warranty. Same problem happened again at 33,356 miles, again requiring replacement of pads and turning of rotors (this time it was not covered - considered normal wear items). Once again, at approximately 52,000 miles, loud grinding from the left rear brake revealed that both inner and outer pads had been totally scrubbed off with light metal to metal contact, while the right rear pads still had greater than 50% of original pad thickness. The caliper slides operated smoothly and were well lubricated and sealed, and the pad slides were dirty with brake dust, but not corroded or blocked with dirt. The pads appeared to have been exposed to high heat. I replaced the pads to finish my trip and upon return it was apparent that the new pads had been dragging as evidenced by a strong smell and glazed appearance. It does not seem normal for this condition to happen - there was no grinding or abnormal noise observed during the most recent event, until pulling into our destination, when it was very loud. Appears that the caliper or caliper piston is sticking to keep the pads in contact with the disk, thus overheating and challenging the brake pad life. This seems to be only on the left (driver's side) caliper. Hyundai discussion forums have indicated this is a common problem that hyundai is not formally addressing. I will take the car to the dealer this week, but wanted to register with the federal safety agency since it is a brake issue with safety implications.

Filed Sep 4, 2011 · Brakes · PA

When I bought a new 2008 hyundai sonata, I soon experienced a squealing sound from the rear brakes. The dealership serviced the brakes. They said it was the shims causing the brakes to seize and keep from sliding properly. Within 30,000 miles the rear brakes were worn out. I now have 54,000 miles on the car and the rear brake pads are worn out. I discovered from my mechanic that this model is known for a premature wear problem with the rear brakes. The pads seized in place unable to back off the rotor. I'm prompted to notify you due to the many postings of this issue on the internet. I'm not sure if it is a weather concern with corrosion or a design flaw in the caliper.

Filed Mar 29, 2011 · Brakes · 29,000 miles · VA

Tl*the contact owns a 2008 hyundai sonata. The contact stated that while engaging the brakes it produced a grinding noise. A local mechanic inspected the vehicle and determined that the rear brake system was defective. The dealer was contacted and advised the contact to have the failure diagnosed. The manufacturer was contacted and did not offer any assistance since there was no recall for the failure. The failure mileage was 29,000 and the current mileage was 30,000.

Filed Mar 3, 2011 · Brakes · 29,000 miles · NY

Tl* the contact owns a 2008 hyundai sonata gls. The contact stated that the left rear brakes were grinding abnormally. The dealer informed the contact that the brakes were worn and would need to be replaced. The dealer replaced both rear brakes and pads. The current mileage was 30,279 and the failure mileage was 29,000. Updated 03/31/11*lj updated 04/05/11

Filed Oct 18, 2010 · Driver assistance · OH

While driving at any random point and time the e.s.c control comes on by itself and if I do not notice right away and apply the brake the brake seem to become effected I will hear a grinding noise the car will slide as oppose to coming to a stop this a very dangerous problem. As yet I have not had an accident but the potential is there. This has happened four times over the last six weeks.

Filed Jul 6, 2010 · Brakes · 27,000 miles · NY

Tl*the contact owns a 2009 hyundai sonata. While driving 35 MPH there was a squeaking and a grinding noise coming from the brakes. The pin that controls the brake pads and rotors was worn. The pin controlled the movement in the brake calipers and when it does not move it deteriorates the calipers and rotors. The vehicle was taken to the dealer who stated that she had to replace the brakes at her expense since they were not covered under the warranty or recall. The manufacturer was not contacted. The VIN was unavailable. The failure and current mileage was 27,000.

Filed Mar 3, 2010 · Brakes · 19,500 miles · PA

Car had 19,000 miles on it, I bought it new. Grinding noise from rear drivers side wheel took it to dealer and was told that the rear caliper was not releasing which ruined the brake pads and rotor. Told the car was not safe to drive. The rotor, caliper and pads had to be replaced. Dealer covered the cost. Never had brake problems with any other of the other cars I owned. My miles are highway miles and I do not have to use the brakes as often as I would in the city.