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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 511 (Anti-Theft System - Passive Anti-Theft System (Pats), With Intelligent Access (IA)) >> Description And Operation >> Anti-Theft >> Component Description >> RFA Module

RFA Module

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

The RFA module is responsible for obtaining the passive key data. It uses the PATS antennas and the TPM module to receive the passive key data. The RFA module receives direct input from the TPM module over a LIN -based circuit and monitors the PATS antennas. The RFA module communicates the passive key data with the BCM over the MS-CAN.

The passive keys are programmed to the RFA module. The RFA module contains a unique ID that is checked by the BCM.

If the RFA module is replaced, at least two keys must be programmed to it and a parameter reset procedure carried out.

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