I've just been catching up on the February posts on adjusting the built-in SatNav volume. I thought I was the only one who had this problem! The dealer had no idea how to do it.
Basically I want to adjust the guidance volume separate from the radio/audio volume, and couldn't fathom it out. I will try the tips listed in February, and thanks in advance for people's advice.
Also, I sometimes want map guidance but without the verbal instructions, so I can hear the radio without interruption. I gather there is a mute option in Settings, so will have a look at that.
On a different topic, I discovered that if you go into the screen which shows your current location, it also tells you the altitude, which was useful when I wanted to compare altitude from my home to a destination which I cycle to. An extra bit of info when on holiday etc.