See also:

Engine start/stop button position
OFF To turn off the engine, press the engine start/stop button with the engine start/stop button in the ON position and the shift lever in P(Park). When you press the engine start/stop button wit ...

Hybrid-ness
Before I get into the performance and technology aspects of what makes the Sonata Hybrid tick, I've got to point out the fact that the Sonata Hybrid looks dramatically different from its gasoline- ...

Exhaust pipe and muffler
Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration, or damage. Start the engine and listen carefully for any exhaust gas leakage. Tighten connections or replace part ...