How do I troubleshoot the navigation system in my Audi A5?

I recently purchased an Audi A5 and I'm having trouble with the navigation system. It seems to be constantly recalculating and not giving me accurate directions. What could be causing this issue and how can I fix it?

Hi David, it sounds like your navigation system may be experiencing signal interference. Try resetting the system by holding down the power button for ten seconds. If that doesn't work, try updating the system's software or consulting your local Audi dealership for further assistance.

David, it could also be a problem with your car's GPS antenna. Check to make sure it is securely attached and not damaged. If necessary, have it replaced.

Another possible solution is to manually enter your desired destination instead of relying on the voice command feature. This can sometimes provide more accurate directions.