How to adjust the volume for voice navigation in Maps with CarPlay

After installing my new AppRadio in my car I testet the Maps functionality with voice navigation. The problem was that the voice navigation was extremely loud and I couldn’t’ change the volume on the AppRadio neither on the iPhone with the Volume buttons. If you have the same problem here is the solution.

Solution

The solution is to navigate on the iPhone to the settings and then Maps. I changed then the voice volume from “Normal volume” to “Low volume”.

Some specifications

I’m using the AppRadio Pioneer SPH-DA120 in my VW Golf V GTI. As phone I use the iPhone 6.