“SMART TACHLESS” MODE
Your CoolStart system includes a unique voltage monitor called “Smart Tachless” mode. This mode allows this unit to
efficiently start an engine without the use of a tach signal wire. These modules actively monitor the voltage level of the
vehicle to control the starter motor each time a remote start is requested.
IMPORTANT NOTES:
(1) SETUP may be required for the RS900/901/999FM “Smart Tachless” Mode. If your vehicle has not been at rest for a
period of time (Hot engine), then you must drain the surface charge from the battery. Unplug main power harness
from unit, turn HEADLIGHTS ON for 4 minutes to drain off excess surface charge on vehicle’s battery then
reconnect.
(2) On the rare occasion that “Smart Tachless” mode does not operate satisfactorily, change the voltage reference level
as described below, or use a different mode such as “Tach Reference” mode, or “Timed Crank” mode.
“SMART TACHLESS” ADJUSTMENT:
In the event “Smart Tachless” over-cranks or under-cranks your starter, the settings can be changed. The purpose of
adjusting the “Smart Tachless” Mode is to raise or lower the voltage reference threshold from the 90% default point.
Raising or lowering this 90% point should increase or decrease your cranking time respectively. The adjustment range
is from 80% to 100% in one percent increments. The Default is 90%. Follow steps below to adjust the reference level.
1. Open hood (or ground Gray wire if no hood pin is installed)
2. Turn the key to the ON position
3. Press program button 5 times, after a few seconds the unit will flash the lights 5 times.
4. Carefully press the program button 19 times to get to option level 19. You must get a light flash after each press. If
the lights didn’t flash, then the unit did not register your button press. Only count the light flash.
5. Press the Lock Button #1 on the remote to decrease by 1% (lights will flash 1X for each press); Press the Unlock
Button #2 to increase by 1% (lights will flash 2X for each press); Press the Trunk Button #3 to reset to 90% (lights will
flash 3X). The unit will stop providing light flashes when you reach the bottom (80%) or the top (100%) of the
adjustment range. If you lost track, then just press Button #3 to reset back to 90% and begin raising or lower again.
6. Turn Ignition OFF, Close hood (or un-ground the Gray wire) and check operation.
NOTE: This Smart Tachless adjustment feature is not available on the RS901 Model that has no remote
transmitters or antenna. If you must use this feature on a 901, then a remote and antenna module from an
RS900 must be used to set the desired level, then removed when finished.
