99-04 Mustang PCM Replacement & PATS Key Reprogram

[@BlazenWinchester]

As an electronic technician, your video is straight forward, clear, loud and no bs. TY.

[@Trix-ur8xt]

So I just bought a 2002 mustang V6 manual and when they were trying to program the car with the new keys that they cut every time they put it in the ignition theft kept blinking, so do I need to replace the whole PCM For the new keys?

[@OldSchoolNoe]

you would do an ignition key code erase, listed on the menu at 3:33 . It is shown in action at 4:00 .

[@Trix-ur8xt]

@@OldSchoolNoe so what I need to get a new PCM or can I just change the fuse

[@itsduncan4864]

@@Trix-ur8xtare you stupid, he clearly said you need a code scanner.

[@jxsues2268]

can this part cause a car to not start? my 03 v6 mustang won’t start and keeps sputtering, i’ve changed the fuel pump, filter, ignition coil packs and the driver module, could this be what i’ve been needing?

[@OldSchoolNoe]

Is a P1260 DTC stored? If its not, reprogramming the PATS module is not necessary

[@en4orser]

If you can get your car to start, at least turn over like she's trying. Don't go after the PCM just yet. You don't have a PATs problem. Look inside the front passenger wheel well. Take the tire off and remove the plastic splash gaurd. Up top there is a metal box, held by a bracket with two bolts. A big wiring harness that plugs into it is secure by a bolt in the center of the harness. This box is called the CCRM, Constant Control Relay Module. Rock Auto and other parts stores call it a BCM, Body Control Module. Whatever Ford wants others to call it, because they stopped making/using them in 2004. Dirty little move they did by taking 5 fuse Relays, soldering them all on a circuit board, riveting it shut, and hiding it in the wheel well. They use to charge $500 at the dealer for one of these. These Relays are basically fuses. They Control your fuel pump, pcm, a/c clutch, WOA, and your low and high speed radiator fan switch. Grab one from the salvage yard or a number of new refurbished ones, they are sold everywhere. Don't pay more than $150 for a new/refurbished. Also make sure the fuel shut off switch in the trunk isn't, you know..... shut off. Tons of videos out there, search CCRM

[@en4orser]

Oh and don't go to the dealer other than having them look up the part number for you. Oh yeah, make sure you get the right part number. Many different ones that all look the same. Wiring harness and all

[@jaymiller6566]

@@en4orserwill that cause a theft light to flash and have a blank odometer, also no start of course!

[@kbh8181]

@OldSchoolNoe I currently have a 2001 with a 99-00 gauge cluster installed and it works but a few small functions don't work as they should. For example, turning on the rear defrost button blows the AC fuse and the convertible top doesn't work. I bought a 2001 cluster that should fix these issues since they incorporated some of these functions within it beginning in 2001, but i need to program it to match the PCM and pats and i have two keys as well. How do i do this?

[@OldSchoolNoe]

look at 3:58 , you would select "instrument cluster." or "Hybrid Electrical Cluster." I have not done an instrument cluster program on the Mustang, but that is what I would try.

[@kbh8181]

@@OldSchoolNoe Thanks for the reply. Unfortunately I don't have a scantool. Would you be willing to do it for me? I'll pay. I'm in the LA area. P.s. the tool you linked on Amazon says it doesn't program: *Note: NOT available with Active Test, ECU Coding, and Programming.

[@OldSchoolNoe]

@@kbh8181 I looked up the Ford service procedure for the instrument cluster. There's nothing about programming it, it should just be a direct replacement. Have you tried installing the replacement yet?

[@kbh8181]

@@OldSchoolNoe Yes I have tried the swap and it won't start. I put the old one back in and It starts up normally. It has to be mated to the ECU for it to work. I did a search for "Ford cluster programming" here on KZbin and this is an example: kzbin.infoFG8OBNvYHdc?si=QV2MiQGB73X74VrN

[@HPX584]

Also, when it says, cycle key1 in ignition off to run for 3 seconds. Does that mean go from off to run, off to run, off to run? Or OFF to RUN and wait 3 seconds and then key #2 And when it says disconnect DLC from unit we unplug it from the obd2 port on the vehicle and disconnect the device from the vehicle?

[@OldSchoolNoe]

First remove the key the unplug the scanner from the obd2 port insert key #1 and turn the ignition to run mode (that's the mode before cranking the vehicle) let it sit in that mode for 3 seconds, cycle to off and remove the key repeat on key #2

[@HPX584]

@@OldSchoolNoethank you

[@andycoronado1927]

I have a bad pcm and need to replace but I only have one key. Would I just need to program another blank key?

[@OldSchoolNoe]

try to program that key before changing the PCM, just to make sure it works.

[@andycoronado1927]

@@OldSchoolNoe the pcm that I do have does not communicate with the instrument cluster. It only actives some parts of the car functions

[@OldSchoolNoe]

@@andycoronado1927 that's quite a predicament you're currently in. If the ignition cylinder is still the original, I would have the Ford dealership cut me another key for it, then replace the PCM and program the 2 keys to the new PCM.

[@MustangBullitt-sz8tg]

Im currently having this issue after my sct eliminator chip fried my PCM when i unplugged it. Long story short I've been searching for a PCM i found a matching one, i assume i can install it and then have it reprogrammed as you did in this video and it should work right? Ive lost quite a bit trying to get this done and I'd hate to sell the car over a fried PCM

[@OldSchoolNoe]

@@MustangBullitt-sz8tg yes, it should work

[@everydaynormalness2220]

Late to this but I have my autel and every time I try to do a parameter reset it won’t let me it turns my scanner off do I need to know the vin of the replacement pcm?

[@OldSchoolNoe]

No. Does it give a message such as "access denied" or "parameter reset failed?" I find it very odd that it would just shut down.

[@everydaynormalness2220]

@@OldSchoolNoeNo it just automatically takes me back to the menu to pick the main menu it will let me into the immobilization menu and grant security access but not parameters, do I have to do parameter reset or can I just delete previous keys and program new ones?

[@everydaynormalness2220]

It’s a autel Maxisys and I’ve never updated it cause I don’t want to renew a subscription so I don’t know if that’s the problem

[@OldSchoolNoe]

@@everydaynormalness2220 no, since its an older vehicle, its program doesn't need to be updated. You have to do a parameter reset, because if you replace the PCM, and if you just reprogram keys after that, the PATS module is going to have a problem with that. Why are you replacing the PCM? Is something not communicating?

[@dirtbikerider3543]

You dont need 2 keys if you swap out the ignition pcm and dash like speedo and whatnot right you can still use the auto wire harness and whatnot right ? I have 2 newedge gts ones has the whole drive chain(motor trans driveshaft,steering colom yk everything BUT it is wreacked so i cant use the radiator and exaust tips thats pretty much it) on the auto the dude drilled out the ignition and i hooked a battery up to it and it just kept blarring its horn as of right now tommorow i will be swapping out my ecu and pedels any advice and am i right on this?🤔

[@OldSchoolNoe]

In theory it should work, don't forget to swap over the PATS module too

[@spyarc5522]

when i attempt to gain security access, it goes through the whole 10 minutes timer and then backs out to the screen before the 10 minute timer. Im unable to gain security access. it doesnt say anything though just backs out. do you have to have an active autel subscription in order to gain access. my subscription ended the other day ): idk what to try

[@OldSchoolNoe]

@@spyarc5522 is the scanner reading the VIN properly? Did you input the correct vehicle info? It sounds like something might be disconnected.

[@JuanReed-s8d]

What do you do when you enter the password and it keeps it doesn't accept it it keeps going back do you know the Wi-Fi is correct what do you do

[@OldSchoolNoe]

I believe you do not need wifi for this procedure.

[@HPX584]

How come on the eBay PCMs they say you need to reprogram PATS with your keys even though they flash the ECU to your cars vin?

[@OldSchoolNoe]

The anti-theft system on the Mustang works with the instrument cluster aka ([HEC] Hybrid Electronic Cluster), and the PCM/ECU. Those are a "matched pair" when installed, along with the PATS system. All 3 share "security data" before the vehicle is allowed to start. If one is changed, it will have different security data so all 3 need to be reset and reprogrammed to each other.

[@CarbonVQ]

Will this work on the old mustangs with gen 1 pats like 96-98?

[@OldSchoolNoe]

I've never done one, but the scanner should have the function.

[@jonboi7694]

How do you reprogram the vin?

[@OldSchoolNoe]

It is quite expensive, to start you need a J-2534 pass through device, which costs around $1,000, a laptop, and a subscription to Ford. Here's a video detailing the process, the vehicle in the example is a Ford Transit, but the Mustang process is basically the same. kzbin.info/www/bejne/hGOymaeLZttre6c

[@HPX584]

is this the same process for the ECU

[@OldSchoolNoe]

?? The PCM is the ECU, yes

[@ucnhtmenow1]

Damn, they have a glove box on the driver's side on this stang. Must be 1of1. Just BYB

[@dalemarshall1029]

What exact model is your scan tool ? I see several different MK808 models on amazon but none of them seem to have this function.

[@OldSchoolNoe]

Autel calls it the "immokeys" function. www.amazon.com/Autel-Diagnostic-Diagnosis-Throttle-Injector/dp/B089XWCTX3/ref=sr_1_8?crid=1EOLNTCPY2GU0&keywords=mk808&qid=1687215964&sprefix=mk808%2Caps%2C992&sr=8-8

[@tommymach1301]

Thankyou so much for this video. I'm sure mechanically inclined but (pats) almost defeted me. And I showed (pats) your my beotch and because of you and my autel I now have my stroked and punched. 20 over 4.6 and she's a beast. I can't say thankyou enough cause it also showed me how to work the autel. So that being said anyone who has this trouble don't get fed up. Walk away with a fresh mind and tackle it again it will work out in the end

[@OldSchoolNoe]

Nice! Glad to hear a success story, scroll down the comments and find the one by "Italktoplanetsbaby." That's one soul that was defeated by pats!

[@andresramirez8254]

Do you really need two keys to do these?

[@OldSchoolNoe]

2 keys minimum, otherwise the PCM you're programming will not let the "single key" turn on the car

[@gilmo55]

2001 mustang gt had the pats system removed. Still need 2 keys?

[@jackietaylor5165]

Thanks ❤

[@italktoplanetsbaby]

I just hauled my mustang to the salvage yard. Ill never buy another Ford again. PATS won. Now ilive without hope. Just...junk.

[@mgh998]

Not having a good anything with this fkin car.. 2001 mustang had to repair the odometer ..solder connections.. put it back in no start put in fully programmed with vin and fully flashed pcm no start.. locksmith tried parameter reset nothing.. put old immobilizer back in nothing..

[@OldSchoolNoe]

A couple questions to clear things up: 1. it cranks but doesn't start, or totally dead? 2. how did the problem start?, I'm assuming it happened after repairing the odometer I'm assuming it cranks but doesn't start. First thing i'd do is make sure the battery is healthy, at least 12.6V, then check all fuses. Maybe something was short circuited. Then check the fuel pressure, either physically by hooking up a gauge to the shrader valve, or by looking at the scan tool Pid for fuel pressure. If trouble code P1260 is not present, then this is not an immobilizer (PATS) issue.

[@mgh998]

@@OldSchoolNoe it started when I took out the IC to repair the odometer bad solder joints these cars are famous for.. did that put the cluster back in.. and no start I had it turning over but now it's not recognizing either key and no pats pcm communication...

[@mgh998]

@@OldSchoolNoe it's not reading the keys so I can't get any scan from it... When I use forscan it communicates with the OBD2 tool to the laptop then. Says no communication with vehicle and ask me for the pcm part. Number when I enter it. It shows a 2000 mustang... Mine is 2001 it shows correct mileage but no vin it shows 2 keys remembered in pats but when I try erasing and programming new keys it shows 0 keys present then when I program both keys it says two are saved.. but every scan tool I've used won't work saying no key in ignition..

[@mgh998]

@@OldSchoolNoe can't check fuel pressure as the fuel pump isn't receiving signal from pcm. It won't let me do a parameter reset to link pats and ocm

[@mgh998]

@@OldSchoolNoe pcm is new fully. Programmed with latest tune info