See also:

Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary. An authorized HYUNDAI dealer should perform the operation. ...

Locking doors
1. Close all doors. 2. Push the "LOCK" button on the transmitter. 3. At the same time all doors lock, the turn signal light will blink once to indicate that the system is locked. ...

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 ...