One problem related to software has been reported for the 2011 Hyundai Sonata Hybrid. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Hyundai Sonata Hybrid based on all problems reported for the 2011 Sonata Hybrid.
May be engine or electrical or software problem; lost power on interstate from 70 mph to 20 mph then got off exit, shut down and waited a few minutes and then started it up and no problem again; has happened 3 times in last 4 months; taken to dealer twice without success- no codes in computer; now car is sputtering and jumping when gas is applied after slow down/stop. Now getting flashing/blinks on/off ready light on dash. Saw NHTSA id number 10056327 and sounds like my issue. Drive 40 miles one way to work on interstate daily and am getting very concerned about losing power. I have reported it to dealer twice and nothing done about it and reported it hyundia customer service center without a call back to date.