Mazda MX-30 2020 Owner's Manual page 411

Interior Features
Mazda Connect
▼ Audio Remote Control Switch Operation
The audio remote control switch is on the left side of the steering wheel. You can
operate basic audio functions, pick up/hang up the phone, or activate voice
control using the switch.
The shape of the switches may differ depending on the specifications.
No. Item
1
5-22
Volume adjustment button:
Press the (+) or (-) button to adjust the volume.
If you adjust the volume during voice guidance, the volume of the
voice guidance will change.
If you adjust the volume during a hands-free call, the conversation vol-
ume will change.
Explanation