If wireless Android Auto isn't working on your BMW, there could be several reasons why. Here are some Car Infotainment Systems troubleshooting steps you can try:

Check Compatibility: Ensure that your BMW model and Android device both support wireless Android Auto. Not all BMW models or Android devices support this feature.

Update Firmware: Make sure your bmw car navigation system is running the latest firmware version. Sometimes, updates include improvements or bug fixes related to Android Auto compatibility.

Enable Bluetooth and Wi-Fi: Ensure that both Bluetooth and Wi-Fi are enabled on your Android device and that they are connected to your BMW's infotainment system.

Restart Devices: Try restarting both your Android device and your BMW's infotainment system to refresh their connection.

Forget and Re-Pair: If you've previously paired your Android device with your BMW, try forgetting the Bluetooth connection on both devices and then re-pairing them.

Check Settings: On your Android device, go to Settings > Connected devices > Connection preferences > Android Auto and make sure wireless projection is enabled.

Check Android Auto App: Ensure that you have the Android Auto app installed and updated on your Android device.

Check BMW Settings: In your BMW's infotainment system, navigate to the settings menu and look for options related to Android Auto. Make sure wireless Android Auto is enabled if there is such an option.

Restart wireless android auto: Sometimes, restarting the BMW's infotainment system can resolve connectivity issues. Refer to your vehicle's manual for instructions on how to do this.

Contact Support: If you've tried all the above steps and wireless Android Auto still isn't working, you may need to contact BMW customer support or visit a dealership for further assistance. There could be a hardware or software issue that requires professional attention.

Remember that wireless Android Auto functionality may vary depending on your BMW model and Android device, and it's essential to refer to the specific instructions and compatibility information provided by BMW and Google for your devices.