One problem related to tire valve has been reported for the 2011 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Hyundai Sonata based on all problems reported for the 2011 Sonata.
Three months ago my first tire pressure sensor broke. I was parked in an indoor parking garage and found my car with a flat driver side front tire. I put on the spare and drove to a tire center where they informed me the tire pressure sensor had broken. I had a rubber valve installed and then later that week brought the car to a dealer and had the tps replaced. Last week I was driving and my tire pressure alarm lit on my dashboard. I pulled into a service station and attempted to put air in the rear passenger side tire. As I started to place the air pump onto the valve he tip of the tps broke off in my hand, causing the entire tire to flatten instantly. Again, I had to put the spare on and drive to a repair shop and have a rubber valve put in. Today (one week later), a third tire pressure sensor failed, this time the drivers side rear tire. I was fortunate to have this one happen in my driveway instead of on the highway. This is extremely dangerous as the tires instantly flatten, and can cause a serious accident if it occurs on the highway.