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LESSON 4: ELECTRICAL
Vehicle Security Module
For the 2005 Expedition/Navigator, the Vehicle Security Module (VSM) strategy has been revised to allow
Remote Keyless Entry (RKE) transmitter data (IDs and rolling codes) to be retrieved and programmed using
diagnostic tools. It is no longer necessary to reprogram the remote transmitters when a VSM is replaced. When a
VSM is replaced using the PMI procedure, remote transmitter data is now also transferred to the new module. The
Workshop Manual has been updated for 2005 with this procedure change.
NOTE: When programming the VSM using as-built data, it will still be necessary to program the remote
transmitters to the VSM.
2005 Expedition/Navigator New Model Technician Training02-SEP-044-6