Is anyone VERY familiar with this issue. Have spent too much time and money trying to resolve. ISSUE: Have to turn ignition to ACC and wait until (cluster) odometer warms (IAT). through random number resolves low order digits to high order digits to complete SCP then truck will start. Wait time is outside temp dependent. 5min if above 60.. 10-15min if 40<>60.. 40-50min 30<>40 etc... Have been to dealerships and had testing and replaced PCM and ignition transducer(?).. have video (MP4) I can email if needed.
Ford wants to replace cluster (another shot in the dark) for 1K.. can have rebuilt for $85... but I don't have warm fuzzy.. it seems like relay or short to me.. but which one or where

Anti-Theft—PATS
The passive anti-theft system (PATS) contains the following components:

theft indicator
encoded ignition key
transceiver module
instrument cluster
powertrain control module (PCM)
standard corporate protocol (SCP) communication network
The PATS uses radio frequency identification technology to deter a driveaway theft. Passive means that it does not require any activity from the user. This system is known as SecuriLock® in North America, Safeguard® in the U.K. and PATS in continental Europe. This information can be found in owners literature.

The PATS uses a specially encoded ignition key. Each encoded ignition key contains a permanently installed electronic device called a transponder. Each transponder contains a unique electronic identification code, with over 72 million billion combinations.

Each encoded ignition key must be programmed into the vehicle's instrument cluster (the instrument cluster is also known as a hybrid electronic cluster [HEC]), before it can be used to start the engine. There are special diagnostic procedures outlined in the workshop manual that must be carried out if new encoded ignition keys are to be installed.

The encoded key is larger than a traditional ignition key. The key does not require batteries and should last the life of the vehicle.

The transceiver module communicates with the encoded ignition key. This module is located behind the steering column shroud and contains an antenna connected to a small electronics module. During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends the data to the instrument cluster.

The control functions are contained in the instrument cluster. This module carries out all of the PATS functions such as receiving the identification code from the encoded ignition key and controlling engine enable. The instrument cluster initiates the key interrogation sequence when the vehicle ignition switch is turned to RUN or START.

The PATS uses the PCM to enable or disable the engine. The instrument cluster communicates with the PCM over the SCP network in order to enable engine operation. The instrument cluster and the PCM use sophisticated messages in order to prevent a theft. The instrument cluster and the PCM share security data (when first installed together) that makes them a matched pair. After this security data sharing, these modules will not function in other vehicles. The shared PCM ID is remembered even if the battery is disconnected. The instrument cluster also stores the vehicle's key identification code even if the battery is disconnected. There are special diagnostic procedures outlined in this workshop manual that may be carried out if either a new instrument cluster or PCM needs to be installed.

All elements of PATS must be functional before the engine is allowed to start. If any of the components are not working correctly, the vehicle will not start.

PATS uses a visual theft indicator. This indicator will prove out for three seconds when the ignition switch is turned to RUN or START under normal operation. If there is a PATS problem, this indicator will either flash rapidly or glow steadily (for more than three seconds) when the ignition switch is turned to RUN or START. PATS also "blips" the theft indicator every two seconds at ignition OFF to act as a visual theft deterrent.

The PATS is not compatible with aftermarket remote start systems, which allow the vehicle to be started from outside the vehicle. These systems may reduce the vehicle security level, and also may cause no-start issues. Remote start systems must be removed before investigation of PATS-related no-start issues.

Did your dealership replace the pcm? They are NOT plug and play. Whenever the pcm or the instrument cluster is replaced, they must be programmed for PATS. Then a minimum of 2 keys are needed for PATS programming. Because of all the parts being replaced, you might need parameter resets performed. Your codes are essentially " not enough keys programmed" and "Start disabled". When you replace one of the modules, you do an "Exhale, Inhale", meaning you download all information in the module (PCM/IC, etc), into the IDS, replace the module, then "Inhale" or upload the information into the new module. THEN, program keys.

I am not sure if they did PATS programming when the used another PCM (several years ago). I replaced the transceiver myself and it didn't make any difference in operation. Thanks VERY much for your feedback.
A bit more background -- After I do the warm up and successfully start the truck if it runs for a significant time I do not have a problem restarting. When the weather is warm or I pre-heat the cab with a heater I DO NOT have this problem. This started about five years ago and I accidentally discovered turning ignition to ACC worked (I was told it is basically reprogramming the key). Also the wait period has gotten worse over the years... it used to ONLY do this when temp was below 40 and wait time was only about 5 minutes. I will take it back to dealership with this info for further testing. I have the U1147 and P1260 diagnostics info from FMC. If you have any more feedback or an opinion it would be greatly appreciated. btw.. if you give me an email address.. I will send you the video... it's a trip.

Ok, so this has been going on for some time? It won't be a programming issue. It'll end up an adjustment issue or something loose.