One problem related to brake light switch has been reported for the 2011 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Kia Motor Optima based on all problems reported for the 2011 Optima.
This kia has a push button start option. The vehicle would not start and the brake lights were not turning on when the brake pedal was depressed. The computer looks for a signal from the brake light switch before it starts the engine. I disconnected and reconnected the brake light switch and the problem was temporarily corrected. Two days later, the vehicle would not start again and the brake lights were not turning on. We used the procedure to bypass the brake signal (hold start button for 12+ seconds) to start the engine. Vehicle was now driving down the road with no brake lights. There was also a warning light illuminated on the instrument cluster indicating an issue with the esc system. Dealership stated they have seen a few cars with this issue.