Why won't the key turn?

If the key won't turn in a 2011-2017 Kia Rio, there could be several possible reasons:

1. **Steering Wheel Lock**: The steering wheel might be locked. Try turning the steering wheel slightly while turning the key in the ignition.

2. **Gear Shift**: Ensure the gear shift is in the "Park" (P) position if you have an automatic transmission. For manual transmission, make sure the clutch is fully depressed.

3. **Key Issues**: The key itself could be worn out or damaged. Try using a spare key if you have one.

4. **Ignition Cylinder**: There might be an issue with the ignition cylinder. It could be worn out or have internal damage.

5. **Battery Problems**: A low or dead battery can sometimes prevent the key from turning. Check if the battery needs charging or replacement.

6. **Debris or Dirt**: Dirt or debris in the ignition lock can prevent the key from turning. Use a can of compressed air to clean out the ignition slot.

7. **Steering Column Issues**: There could be a problem with the steering column itself, which might require professional inspection and repair.

If you've tried the basic troubleshooting steps and the key still won't turn, it might be best to consult with a professional mechanic to diagnose and fix the issue.