Sony XAV-AX5500 Help Manual page 117

Help Guide
In-Car Receiver
XAV-AX5500/XAV-AX5550D
There is no sound. / The sound is low.
Your iPhone/Android phone is not connected to the unit via BLUETOOTH.
Make a BLUETOOTH connection.
The volume level of [BT Audio] is low.
Adjust the volume level of [BT Audio].
5-010-463-11(2) Copyright 2020 Sony Corporation
117