Interior light

Do not use the interior lights for extended periods when the engine is not running. It may cause battery discharge.

See also:

Side repeater light bulb replacement (if equipped)
If the light bulb is not operating, have the vehicle checked by an authorized HYUNDAI dealer. ...

Check battery and cables
Winter puts additional burdens on the battery system. Visually inspect the battery and cables as described in section 7. The level of charge in your battery can be checked by an authorized HYUNDAI ...

Engine Compartment
1. Engine coolant reservoir 2. Engine oil filler cap 3. Brake fluid reservoir 4. Air cleaner filter 5. Windshield washer fluid reservoir cap 6. Power steering fluid reservoir (If Installed) 7. ...