
3
Initiate/Learn Button: After selecting the initiate or
learn mode, press this button to request the
appropriateresponsefrom a sensor. Initiation
transmissions are used to obtain new sensor
readings for the SmarTire gauge or the
diagnostics software.
Low Battery LED: The low battery LED
will ash amber once every second when
thetool is onandtheonboard9-Voltbattery
isnearempty. Approximately20 additional
Initiate/Learn operations can be performed after the
battery LED blinks for the rst time. The battery LED will
lightupsolid amber during the shut downprocesstosignal
that the user can release the ON/OFF button.
3. GETTING STARTED
TheSmarTireTPMS Low Frequency(LF)tool is powered
byastandard9-Voltbattery.To install the battery,openthe
battery access panel on the back of the tool and connect
the supplied battery to the 9-Volt battery connector.
4. USING THE SMARTIRE LF TOOL
Read and understand the General Safety Guidelines
on page two of this document before beginning any
maintenance work on a vehicle.
IMPORTANT
It is important to make sure that there is no loss of
power to the SmarTire TPMS during the Learn Sensor
procedure. Power interruptions will result in some -
and potentially all - stored sensor location information
being lost, requiring the technician to start over again.
A. To switch on the SmarTire LFTool, press and hold
the On/Off/Mode Select button ( ) for two (2)
seconds.
B. Enter the Learn ( ) or the Initiate ( )
Mode by toggling the On/Off/Mode
Selectswitch ( ) and thenpressingthe
Mode Select button.
C. Hold the tool approximately two(2)in. (5cm) away
from the tire’s surface, at the center of the tire’s
sidewall,closetothevalvestem. (Therecommended
location for all SmarTire TPMS sensors is at the
valve and rim-mounted labels indicate their
location). Donot touch therimwith the tool. Press
andrelease the Initiate/Learn ( )button (a single
beepwillbeheard)andholdthe tool in place for
ve (5) seconds until four (4) quick beeps are heard
tosignalthatthetoolandsensorhavecommunicated
successfully.
2. OVERVIEW OF THE TOOL FUNCTIONS
Transmitter: The top part of the tool must be pointed
towards the tire to communicate with the sensor. See the
diagram below. For dual-wheel assemblies it is strongly
recommended that the tires are installed with their valve
stems arranged 180° from each other to help make sure
that the transmission reaches the correct sensors.
OUTBOARD
TIRE INBOARD
TIRE
LF TOOL
TRANSMITTER
ON/OFF/Mode Select Button: Press and hold this
button for two (2) seconds to power ON the tool. The tool
will sound a beep and the Initiate LED will illuminate to
show that the tool is ON. To toggle the tool
betweenthesensor Initiate and sensorLearn
functions, press the button briey. The green
LED for the current mode will be illuminated.
To shut down the tool, press and hold the
button for four (4) seconds. The battery LED
illuminates to show that you can now release the button.
Initiate LED: The Initiate LED will be ON (green) as long
astheInitiate Modeisselected. WhenpressingtheInitiate
button, the LED will blink rapidly for ve (5) seconds and
then change to one (1) blink per second after
the initiation has been completed. In service,
thesensorautomatically communicates every
3-5 minutes, however the tool prompts an
immediate response.
Learn LED: TheLearn LEDwillbeON(green)as long as
theLearnMode is selected. Learn transmissionsareused
whenreprogramming sensor ID codesintotheSmarTire®
TPMS receiver, either by using the PC-based
Bendix®ACom®Diagnostic software, or by
using the dash-mounted display. When
pressing the Learn button, the LED will blink
rapidly for ve (5) seconds and then change
to one (1) blink per second after the Learn transmission
has been completed. Upon being prompted, the sensor
communicates its unique ID code to the receiver.