Is it parked outside and exposed to moist cold air? If so, it could also be that one of the coils may be cracked and moisture is getting in there. This would produce a fault code and in any event it would be be worth investing in a ELM327 with a USB connection and a Ford Switch (e.g. Forscan Bluetooth/USB Diagnostic Tool Switch Modified ELM327 To Ford HS MS Mazda | eBay or Forscan USB FTDI ELM327 Diagnostic Tool with Switch OBD2 For Ford Mazda Scanner 880921492555 | eBay ) and running the Windows version of Forscan with a laptop PC (see https://forscan.org/home.html ) to check for fault codes. Note the WiFi and Bluetooth versions are much slower and tend to have less reliable connections (drop out half way through running diagnostics). Your car might well be able to tell you what is wrong with it.
Forscan USB FTDI Elm327 Diagnostic Tool With Switch OBDII for Ford Mazda Scan R3
$38 USD on eBay
Forscan ELM327 USB with switch, full working with Forscan software can be downloaded from Forscan website. With genuine FT232rl Chip, ELM327 HS + FORScan + MS CAN. This interface will show you much more easily and quickly the settings you have selected.
Forum Discussions about this Product
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Yes; it has to be a matching BEM type and colour whenever a BEM (Body Electronic Module as it is called in the BA) is changed the CTS (Cabin Temperature Calibration) has to be "taught" to the BEM using a Ford WDS tool or something equivalent. You need to copy the details of the existing CTS from the barcode sticker on the ICC CTS and load that into the new BEM. You also need to pair at least two ignition keys to the BEM and a parameter reset performed. It is covered in more detail in sections 419-10-30 and 413-08-23 of the factory workshop manual and it is probably worth you getting a short term subscription (a bargain at US$21.95 for 72 hours (see https://www.motorcraftservice.com/Home/Pricing) from Ford at https://www.motorcraftservice.com and downloading the complete factory manual in PDF format. See Ba falcon pcm and Bem replacement - FORScan forum and other posts on the Forscan Users Forum. You should be able to do what required with a full windows subscription to Forscan (see What's new) installed on a Windows Laptop using a EM327 with a USB connections and a Ford/Mazda switch (one of these type Forscan USB ELM327 Diagnostic Tool with MS/ HS-CAN Switch OBDII For Ford Mazda 880921492555 | eBay ). Note in theory you can do it with a Smartphone using Bluetooth or WiFi based ELM327 but the connections to the car tend to be both much slower and also less much reliable than USB and the Smartphone versions of Forscan lack all the features of the fullWindows version so I don't recommend it.
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How old is the battery; on the FG this is often a symptom of a dying or weak battery?
Note (althought the MIL/engine fault code will vanish from the dash after 4 trips) that if there was a faulty fuel pump and and a pending fault code was triggered, and this was not cleared after the pump was replaced, it will take 80 trips with no faults before the code self clears and the cars starts normally. Similarly triggered DTC codes will remain for 40 trips. Note this fairly uncommon and only happens with codes that trigger the PCM (Power Control Module) to trigger strategies to compensate for what it "sees"as a stored fuel pump faults. So perhaps the relevant fault codes were not cleared after the fuel pump was replaced. So perhaps use Supercheap's cheap code reading service to check if there are still codes and if they were cleared. Better yet get a full version of Forscan for Windows Download FORScan and either an ELM327 with a Ford/Mazda switch (e.g https://www.ebay.com.au/itm/Forscan-...frcectupt=true ) to use with Forscan and one of these https://www.ebay.com.au/itm/Obdlink-...frcectupt=true . There are versions of Forscan and ELM327's that work with various smartphones and WiFi or Bluetooth but they can be slow and have for me have had unreliable comms so I always recommend using Windows Laptop and a USB link. These devices will allow you to program module settings as well as detect and clear codes.
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