Honda Fit 2018 Owner's Manual page 428

uuWhen DrivinguShifting
■
Shift Up/Down Indicators
* Not available on all models
426
*
Come on to inform you that upshifting or
downshifting is necessary to prevent the
engine from over revving or stalling.
The shift up indicator:
Comes on when upshifting is recommended.
The shift down indicator:
Comes on when downshifting is
recommended.
*
1Shift Up/Down Indicators
This indicator will not prompt you to downshift to
increase engine braking. It is up to you to downshift
to increase engine braking when driving downhill.
Always shift down at the appropriate vehicle speed.
Ambient meter color may change if you do not
change gears when a shift indicator illuminates.
Road and traffic conditions may require you to shift
at times other than those indicated.