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Setting the Auto On/Off Threshold
The Auto On/Off function works by constantly measuring the system voltage (when installed in a vehicle, this
is the battery voltage). With an On/Off threshold voltage set, the computer will turn on when the voltage goes
over the threshold and shut down, sleep, or hibernate when the voltage goes under the threshold. The
"Shutdown Delay" sets how long the computer waits after the threshold is met to shut down, sleep, or
hibernate. The "Vehicle Battery Protector Shutdown" will shut down the computer within a minute after
reaching the critical voltage threshold. The following procedure serves as a guide to help you find the correct
threshold values.
Safety First: Perform the following steps in a safe location clear of any traffic. Ensure the vehicle is in Park and
that no one is in front of or behind the vehicle.
1
. With the engine running, navigate to the "
Vehicle Control
" tab.
2
. Note the average system voltage with the engine running.
3
. Turn off the engine then wait 5 minutes.
4
. Note the average system voltage with the engine off.
5
. Set the "
Auto On/Off threshold
" to a voltage in-between the engine-on voltage and the engine-off voltage
(a good starting point is 1 to 2 volts above the engine-off voltage). Set what function you wish to occur when
the threshold is met (Shutdown, Sleep, Hibernate).
NOTE
: This voltage setting may require fine tuning to get the results you want. If you leave the car off over-
night, and during that time, the computer turns back on unexpectedly, your Auto On/Off threshold may be set
too low. If your shut down timer starts when the car turns on, the Auto On/Off threshold may be set too high.
6
. If you wish to set the critical battery voltage, ensure "
Shutdown immediately at critical battery voltage
" is
check-marked. Set the voltage to the lowest level you would want the battery voltage to go (10.5 volts is
usually a good setting for most vehicles).
7
. Click "
Apply
" after all settings are as desired.
NOTE
: The Auto Off and Auto On functions work fine independently as well. For example, if you just want to
use the Auto Computer Off feature, you can check-mark only that feature and set the related settings.
Voltage Graph
This graph contains a short history of the system voltage. The graph is showing system voltage over time. The
large bold number at the bottom is the current system voltage. The "Minimum Voltage" registers the lowest
voltage recorded when the voltage dips.
