See also:

Adjusting Armrest Angle (Driver's side only)
The armrest will be raised or lowered manually. To raise the armrest, pull it up. To lower it, press the armrest down. ...

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 ...

REAR DRINK HOLDER (If Installed)
The rear drink holder is located in the rear seat armrest for holding cups or cans. The rear drink holder can be used by pulling the rear seat armrest. WARNING: Use caution when using the drink ...