Brake Grinding Noise problems of the 2010 Hyundai Sonata

The rear driver side brake was making a grinding noise. Took to the shop and they say the caliper is working uneven and causing the pad to brake down faster than normal, it was on bare medal. Could this be the crossbar recall causing this to get uneven or an unrelated item? the other side still had 40% pad on it. This seems like a problem to me.

We had to replace the rear brake pads in August 2013 and now in December 2013 having an issue with the rear driver side pad sticking. After hearing the grinding noise again I took it to the repair shop. They are replacing the rotor, pads and calipers for failure to function at a cost of $400. The front pads were still in good condition. These are Hyundai oem brakes. I have been reading numerous complaints about rear brake issues on other 2010 Hyundai vehicles. I have also read that there is a class action law suite in new york over this same issue. I wanted to make a report and possibly find out if there are any plans for an investigation. Hyundai does not seem to have any plans to recall since the issue seems to have existed along time. This is far from normal wear and tear and at the cost of the purposed (by Hyundai service) periodic removal, cleaning, and lubing of the brake pads. This is not normal on any other car and I cannot see this a non issue. That is not to mention the danger of possible brake failure. Is Hyundai waiting for someone to die first?.

Vehicle started to make a heavy grinding noise from passenger side rear wheel. Closer inspection revealed a fresh gouge in the rotor. Took the car to the dealer where the vehicle was purchased and was informed that this was a normal wear and tear item, and not covered under warranty (even though a "gold" warranty had been purchased with caliper replacement plainly included). This indianapolis dealership wanted to charge $380 to replace the rear brake pads and rotors. An independent repair shop found that the drivers side of the rear had approximately 40% of the life left on the brake pads and only normal wear to the rotor, while the passenger side was worn down to the metal on the pads and had rendered the rotor unserviceable. It was also noted that the wear indicator on the passenger side was broken, and did not give the normal audio warning of excessive wear. When asked why the rear should wear out faster than the front (which is what all local brake shops told me would happen), the Hyundai service manager did not have any reply. It should be noted that there are several instances of similar failures, and even a class action lawsuit filed in new york state for the exact same issue. A sticking brake caliper is suspected, but could not be confirmed. Rear brake pads, rotors, and hardware were replaced at my expense. The brake caliper was cleaned, lubed, and reinstalled. Dealership would not honor any warranty obligation for this defect. Front brakes also showed at least 40% of their life remaining on the pads.