Note:
As fuel sloshes around in the tank, from driving around corners, going up or down hills, braking or accelerating, the Level
Sender Mode can provide inaccurate readings. UltraGauge attempts to smooth the results to lessen this affect. However, for
some vehicles with significant sender variation, this issue may be seen in the form of DTE and Fuel Level variation. To avoid
this issue, use the Smart Level Sender Mode setting.
Smart
Smart Mode determines the fuel level by continually calculating the fuel used. Smart mode also monitors the fuel sender to
determine if a tank fill-up has occurred. There are two user configurable thresholds that are used to determine when a Tank fill-
up has occurred; Low Threshold and Full Threshold. When the fuel level falls below the low threshold, the auto-fill function
becomes armed. When the tank is filled and the fuel level exceeds the Full Threshold, UltraGauge triggers a Fill-up event
automatically. When this happens UltraGauge assumes the tank has been topped off and contains the amount of fuel equal to
the fuel tank size. The Fuel Level, TTE and DTE gauges will adjust automatically.
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By default the Low Threshold is set to 50% and the full threshold is set to 98%. Setting the Low Threshold too high may cause
a false Auto-Fill event to trigger as a result of gas sloshing around in the fuel tank.
NOTE: When changing the mode from
Disabled
or
Enabled
to
Smart
, UltraGauge will automatically estimate the existing fuel
in the fuel tank by using the output of the fuel tank sensor. This is best performed while not moving and on level ground. This
one-time estimate will alter the Fuel Level, TTE and DTE gauges only.
NOTE:
Some vehicles incorrectly report the presence of a Level Sender Mode or it is improperly implemented
1
or it is defective. In
these rare cases the
Fuel Level %
gauge will appear frozen or show a value unrelated to the fuel level. Other gauges that use
the Level Sender, including
DTE
,
Fuel Level,
and
Fuel Level %
will also be in error.
In this situation, the fuel level sensor must be disabled. Select
MENU
Fuel Menu ..
Level Sender Mode.
Then select
Disable.
1
This issue has been seen on a 2009 Hyundai Elantra. Many other Hyundai years and models have been found to correctly
support the fuel level sensor
S
S
m
m
a
a
r
r
t
t
F
F
u
u
l
l
l
l
T
T
h
h
r
r
e
e
s
s
h
h
o
o
l
l
d
d
MENU
Fuel Menu..
Smart Full Threshold
Sets the fuel tank level Threshold above where a Smart Fuel fill-up will be initiated. See
MENU
Fuel Menu ..
Level
Sender Mode
Smart
for additional details. This menu item is active on vehicles that report the presence of a fuel tank sensor.
Auto-Fill
Armed
Auto-Fill
Auto-Fill
Not Armed
Smart Low
Threshold
Smart Full
Threshold
Smart Low
Threshold
Smart Full
Threshold
Smart Low
Threshold
Smart Full
Threshold
