If the key fob button has been pressed numerous times while away from the vehicle, the key fob may fall out of synchronization with the security system. If this happens, the security system might fail to recognize the key fobs commands.
To solve this problem, press and hold the key fob button for 10-15 seconds until the security system responds with two turn signal flashes. After confirmation, you may resume normal key fob operation.
Siren Diagnostics
See Figure 1. If the siren is armed and the internal siren battery is dead, shorted, disconnected, or has been charging for a period longer than 24 hours, the siren will respond with three chirps on arming instead of two.
The internal siren battery may not charge if the vehicle's battery is less than 12.5 volts.
If the siren does not chirp two or three times on a valid arming command from the security system, the siren is either not connected, not working, or the siren wiring was opened or shorted while the siren was disarmed.
If the siren enters the self-driven mode where it is powered from the siren internal 9 volt battery, the turn signal lamps may or may not alternately flash. If the security system activates the siren, the turn signal lamps will alternately flash. If the siren has been armed and a security event occurs, and the siren is in self-driven mode, the siren will alarm for 20 to 30 seconds and then turn off for 5 to 10 seconds. This alarm cycle will be repeated ten times if the siren is in the self-driven mode.