2007 Sonata with 37,000 miles. Check engine light and ESC light come on and car goes into limp mode. Extremely unsafe. Happens randomly. Have to pull over because car won't accelerate. Car needs to be shut off and turned back on. Code P2135 and P2106.

- Scranton, PA, USA

I have noticed an unusual percentage of Hyundai Sonatas with the high visibility brakes lights that do not operate. I checked into having it repaired and the estimate was very expensive. I wondered if this was a manufacturing defect since access to the light is so difficult. I was curious if other complaints had been filed and if anything can be done.

- Indianapolis, IN, USA

Several times I have had the alternator and battery fail shortly after and during a rain fall. When it rains the electrical system starts given problems by turning lights off both outside and cluster panel lights, it also starts giving warning light failures such as ABS, ESC and the hazard lights will not function during this time of failure making it very dangerous to be run into in the dark of the night. The dealer is useless as all they do is put the VIN # in their computer and say there is no recall nor know problems as these problems and it is working fine after the alternator is replaced. The car was bought used and in less 10 months the car has had 3 alternators and 2 batteries and the problem has not been resolved.

- Wichita, KS, USA

My husband notice the passenger airbag light was coming on and going off as we were going down the highway at around 20,000 miles. This happened many times for both my husband and myself. I brought the car into 2 different dealers and was told they can't duplicate the problem. Since we didn't notice it happening until we were going down the highway for at least a half hour, I wasn't surprised that it didn't happen while test driving it at slower speeds in town. Since it didn't happen for the dealers, and the ABS light in the instrument panel didn't come on when it happened, there was nothing they could do. Now that the vehicle is out of warranty at 66,000 miles, both the passenger ABS light and the instrument light have come on and won't go out. I also noticed that the passenger seatbelt light was flashing when my husband had his seatbelt on and buckled. I am bringing it to the dealership to see if this will be fixed under warranty but am sure they will say it's not covered and will cost me.

- Fulton, IL, USA

The contact's spouse owns a 2007 Hyundai Sonata. While attempting to start the vehicle, the key turned in the ignition, but the vehicle would not start. The vehicle was towed to the dealer three times regarding this failure. The first time the battery was replaced and the second time parts of the dashboard were replaced. The failure still persists. The vehicle is presently with the dealer for a diagnosis. The current mileage was 940 and failure mileage was 100. Updated 03/06/08. The power seat switch was replaced.

- Elmont, NJ, USA