FixVault

Possible Causes

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
FOBIK
WIRELESS IGNITION NODE (WIN)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/NODE, Wireless Ignition (WIN) - Standard Procedure  .