Mazda 3 Owner's Manual page 606

If Trouble Arises
Warning/Indicator Lights and Warning Sounds
Make Sure the Message is No Longer Displayed
Displays in the following cases:
7–48
Display Indicated Condition/Action to be taken
Displays if i-ELOOP requires charging. Leave the
engine idling and wait until the message disappears.
NOTE
If the vehicle is driven while the message is
displayed, the buzzer will sound.
If you turn the steering wheel while the message
is displayed, it will feel heavier than normal, but
this does not indicate an abnormality. The steering
operation will return to normal after the message
has disappeared.