Mazda 3 2018 Owner's Manual page 197

NOTE
HLA does not operate on a gentle slope.

In addition, the gradient of the slope on
which the system will operate changes
depending on the vehicle's load.
HLA does not operate if the parking

brake is applied, the vehicle has not
stopped completely, or the clutch pedal
is released.
While HLA is operating, the brake pedal

may feel stiff and vibrate, however, this
does not indicate a malfunction.
HLA does not operate while the

TCS/DSC indicator light is illuminated.
Refer to Warning/Indicator Lights on
page 4-23.
HLA does not turn off even if the DSC

OFF switch is pressed to turn off the
TCS/DSC.
Mazda3_8GE4-EA-17F_Edition1
When Driving
Brake
4-65
2017-4-7 11:59:21