Q: How to fix: AirPort has the self-assigned IP address 169.254.166.253 and will not be able to connect to the Internet.

Clear out all your existing wifi names and passwords.. then start over.

This has airports involved but not apple ones.

Wi-Fi: How to troubleshoot Wi-Fi connectivity

If you check through this it says little more than I have.

Look at this section.

Symptom: After restarting or waking from sleep, my computer might not connect to the Internet