Carlinkit A2A can't connect to wireless Android Auto, please make sure the cell phone side, wireless Android Auto function is on.
If you can't connect even if wireless Android Auto is on, then you can.
1, clear Google service cache
2, clear Android Auto cache
3, reset A2A
4, reboot your phone
5 Or, check your Automotive Head Unit resolution, if your Automotive Head Unit resolution is 1920*720, then you need to modify the video output resolution of your mobile Android Auto.
1, clear Google play service cache
your phone->setting->apps->google play services->storage->clear cache
Video Tutorials https://www.youtube.com/shorts/AOKclbaR8tg
2, clear Android Auto cache
Video Tutorials https://youtube.com/shorts/z4uCSjupCQ8
3, reset A2A
your phone->Setting->Connections->WiFi->Autokit***->Enter the password（12345678）
If you get a connection failure pop-up, don't worry, go ahead and click connect.
After the WiFi connection is successful, open your mobile browser and enter 192.168.50.2 in the URL bar
Advanced->Reset->Confirm
Video Tutorials https://www.youtube.com/watch?v=9IN1-Cv-35w
5, Android Auto in developer mode, setting the resolution
Video Tutorials https://www.youtube.com/shorts/W6Gj_GQbjqw