Keyless Entry Module: Service and Repair

REMOVAL







1. Disconnect the battery ground cable.

CAUTION: Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result.







2. Disconnect the C257 and C256 Remote Anti-theft Personality (RAP) module electrical connectors.







3. Remove the nuts and the RAP module.

NOTE: On Expedition and later build Navigators, the antenna is internal to the module and must be replaced as an assembly.


INSTALLATION






1. To install, reverse the removal procedure.


NOTE: When the battery is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mi) or more to relearn the strategy.