Mazda 3 Sedan 2020 Owner's Manual page 306

When Driving
i-ACTIVSENSE
NOTE
If you take your hands off the steering wheel (not holding the steering wheel), the
warning sound is activated and an alert is indicated on the multi-information display
and the active driving display.
Multi-information display
Active driving display
If the steering wheel is held lightly, or depending on the road conditions, the system
determines that you have released the steering wheel (not holding the steering
wheel) even if you are holding it, and an alert is indicated on the multi-information
display and the active driving display.
To resume operation
If the TJA is temporarily canceled, it will resume operation at the previously set speed
by pressing the RES switch after all of the operation conditions have been met.
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