Do you have a second key you can try?
If not, you should get a second key programed by a dealer or certified locksmith and try it and see if it fixes your issue.
Then report back your findings on here...
From the FSM:
Quote:
If a valid key is detected, that fact is communicated by the SKREEM to the Powertrain Control Module (PCM) over the Programmable Communications Interface (PCI) data bus, and the PCM allows the engine to continue running.
If the PCM receives an invalid key message, or receives no message from the SKREEM over the PCI data bus, the engine will be disabled after about two seconds of operation. The Body Control Module (BCM) will also respond to the invalid key message on the PCI data bus by flashing the security indicator in the ElectroMechanical Instrument Cluster (EMIC) on and off.
_________________
Supporting Vendor and Moderator of LOST05 Jeep Liberty CRD Limited
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount98 Dodge Cummins 24 Valve