Mazda mazda3 2015 Owner's Manual page 624

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.