Helio Electric Cycle Owner's Manual page 27

2. Reset: You may reset MAX, DST, AVS, and TM by selecting MAX or DST or
AVS or TM and holding the SET/RESET button and then pressing the MODE
for three seconds. MAX, DST, AVS, and TM will be reset at the same time. (If
Daily trip distance was set up in 1.d above, daily trip distance will not be reset.
Daily trip distance is automatically reset to 0.0 at the start of a new day.)
3. The backlight will operate whenever the headlights are turned on.
4. The display will operate as soon as the front wheel begins rolling – if it does
not, be sure the sensor on the fork is properly aligned (1mm gap) with the
magnet on the wheel, and that the sensor wire is connected behind the front
wheel.
5. The Lithium battery (CR2032) should last 5 years before needing replacement.
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