The 2009 Hyundai SonataComponent: Door Locks
Consequence: All the doors automatically unlock when the car is placed in park. This is an intentional design feature that cannot be deactivated or changed by dealers.
Consequence: Car sounded as though it needs new shocks/struts as soon as it was driven off the lot. The dealer couldn't do anything, and Hyundai advised that is how the car is built, and there is nothing to fix.
Component: Engine Cooling System
Consequence: New Sonata was delivered to customer with a pre-existing oil leak. The engine had to be replaced, and now there is powertrain vibration and strong odor when the engine is warm.
Consequence: The satellite/FM/AM digital radio doesn't work properly. The radio was replaced, and there are still problems. Dealer advised that a non-digital radio cannot be installed.
Consequence: Brand new Sonata has bad front shock absorbers. Dealer ordered new shocks.
Consequence: Car makes loud noises when driving over bumps, as if something were loose.