LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2012 >> Grand Cherokee Laredo, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Electronic Control Modules (Service Information) >> Standard Procedure >> Standard Procedure - Module Programming >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Standard Procedure - Module Programming: Notes

The Wireless Ignition Node (WIN) controls the Vehicle Theft Security System (VTSS), Remote Keyless Entry (RKE). When a Powertrain Control Module (PCM) is in need of replacement, perform the following steps in order:

NOTE:

The PCM and the WIN should never be replaced at the same time. They should be replaced independently of each other.

  1. If applicable, first replace the PCM with the original WIN still connected to the vehicle.
  2. Using a scan tool program the new PCM. (This will ensure the transfer of the Secret Key data from the original WIN into the new PCM).
  3. Replace the WIN, using the scan tool program the new WIN module. This will transfer the Secret Key data from the PCM into the new WIN.
  4. With the scan tool reprogram the key FOBIK to the new WIN.
  5. Ensure all the customer's keys have been programmed to the new module.
NOTE:

If the original keys do not successfully program to the new WIN after the proper procedures are followed correctly, programming new keys will be necessary.