How to troubleshoot Bluetooth connectivity in Audi A4?

I am having trouble connecting my phone to my Audi A4's Bluetooth. It was working fine before, but suddenly I cannot connect. How can I troubleshoot and fix this issue?

First, make sure your phone's Bluetooth is turned on and discoverable. Then, check if your car's Bluetooth is turned on and if the phone is paired with it. If it is paired, try unpairing and repairing the phone. If that doesn't work, try restarting both your phone and car. If the issue still persists, you may need to reset the car's Bluetooth system.

Another possible solution is to check for any software updates for your car's infotainment system. Sometimes, issues with Bluetooth connectivity can be resolved by updating the software. You can check for updates through the car's settings or by contacting your dealership.