Three problems related to brake disc caliper have been reported for the 2012 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Hyundai Sonata based on all problems reported for the 2012 Sonata.
The contact owns a 2012 Hyundai Sonata. The contact stated that while having the vehicle serviced for routine brakes. The vehicle was taken to an independent mechanic where it was diagnosed that the front brake calipers fractured and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 56,000.
The engine oil pan was resealed five times and still its leaking. When they resealed the second time, they replaced the oil pan as well. After that it was resealed three more times and the car is at the dealer for sixth reseal. They are replacing the pan again. The brake caliper pistons are exhibiting excessive rust which I have not seen in my life while owning and maintaining various cars. The field engineer is saying that its normal and I don't agree with that. What I have seen based on that it's a design flaw. The caliper piston should be pressing completely against the brake pad surface area where as small portion of the caliper remains in non contact with the pad and the salt and slush during the winter gets into it making it rust which will impede the braking operation in future and may cause a fatal crash. Attached photographs are showing pack rust inside the piston on both the driver and passenger side.
On Jan 26 my husband was driving home and the road conditions were slippery. When he went to apply the brakes, he heard a loud pop and the brake went all the way down to the floor and would not come back up. Luckily this happened around the corner, but by the time the car made it into the driveway the brakes were smoking. I had to have the car towed to the mechanic. We had to replace the front brake pads, calipers and rotors. Also the brake switch oem had to replaced. When all said and done the total cost came to 729. 64. Can I tell you how disappointed I am in this vehicle?? this vehicle is only a 2012 my high beams don't work nor does the cruise control. I am starting to think this car is a real lemon!!! at this point I would like to know if the brake system has any recalls because my bill was extreme and should not have happened on a 2012. I do not have the VIN number on me at this time. Very very disappointed and have nothing good to say about this car!.