Passive Anti-Theft System (PATS) Keys

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: A maximum of 8 PATS keys can be programmed into the IPC.

PATS uses a special ignition key, called an Integrated Keyhead Transmitter (IKT) key that is larger than a conventional ignition key. It contains a permanently installed electronic device called a transponder and also has the Remote Keyless Entry (RKE) transmitter integrated into the keyhead. Each transponder contains a unique encrypted identification code which is one of a very large number of combinations. The addition of this transponder to the key makes it an "encoded" key. The PATS key does not require batteries and should last the lifetime of the vehicle. The transmitter portion of the IKT key has a battery. Each PATS key must be programmed into the IPC before it can be used to start the vehicle. A maximum of 4 IKT keys can be programmed to start the vehicle and operate the RKE functions. If more than 4 IKT keys are programmed, the RKE portion of the additional IKT keys does not operate. The SJB sets DTC B1138 (Memory Full) and the IPC sets DTC B1218:44 if there is an attempt to program 4 or more IKT keys. These additional keys (more than 4 IKT keys) start the vehicle, but cannot operate the RKE system. If additional PATS keys are desired (more than 4, up to 8 total, IKT and PATS), a standard PATS key (a non-IKT key) can be used. There are special procedures that must be carried out if a new PATS key is necessary. Refer to INTEGRATED KEYHEAD TRANSMITTER (IKT) KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT or KEY PROGRAMMING USING TWO PROGRAMMED KEYS .