Yamaha PASC4 Owner's Manual page 19

Range (Remaining assist distance)
This displays an estimate of the distance (in kilometers or
miles) that can be ridden with assist on the residual bat-
tery capacity of the Battery Pack installed. If you switch
the assist mode when the range (remaining assist dis-
tance) is displayed, the estimate of the distance that can
be ridden with assist changes.
The range (remaining assist distance) estimate cannot be
reset.
TIP
Actual range (remaining assist distance) changes de-
pending on the riding situation (hills, headwind, etc.)
and as the Battery Pack runs down.
If in is displayed.
Headlight on/off
For models equipped with a headlight or taillight powered
by the Battery Pack, each time you press the light switch,
the headlight and taillight will turn on and off.
TIP
When the power is turned on, the lights will return to the
last on/off setting.
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