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Discussion Starter · #1 ·
This is my first post in quiet a while, my truck has been doing great. The only problem has been the continuing door lock and dome lights thing that has been going on for a long time. Now the two OEM key fobs will not work. I tried the reprogram procedure, changed the batteries and checked fuse 19 still nothing. When the key is on everything works power windows, power door locks and dome lights also power seats and power at the 12vdc outlets (cigarette lighter). The key fob will lock all four doors once and unlock the drivers door once with dome lights coming on sometimes for about 30 seconds and others for over 7 minutes. I can drive it like this but I would like to get the key fobs working. My dealer tells me that the VSM is no longer available for my truck, I hope not.
Do I need a VSM or what should I do? Not sure if my signature is still good but the truck is:
2002 F350 Lariat, CC, LB, 4X4 six speed, 7.3
Bill
 

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Discussion Starter · #2 ·
I guess no one can answer my question so I will reword it.
Where can I find a VSM part number 4C7Z-15604-AC? I tried my local Dealer and a couple others online with no luck. They all told me that the VSM is a discontinued product. My local dealer did run my build data and that's how I came up with this part number.
Thanks,
Bill
 

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1999 ford f250
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Well it is discontinued so you could try a junk yard or ebay but if I remember correctly a door latch sensor could also cause issues with the fobs but I'm not 100% sure on that.
My door latch sensors started thinking that the door was being opened while driving and it would turn the interior lights on and buzz at you until it thought the door was shut or it would randomly turn the interior light on while setting in the driveway in the middle of the night that was fun because the batteries didn't like it at all 😕
 

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Well it is discontinued so you could try a junk yard or ebay but if I remember correctly a door latch sensor could also cause issues with the fobs but I'm not 100% sure on that.
My door latch sensors started thinking that the door was being opened while driving and it would turn the interior lights on and buzz at you until it thought the door was shut or it would randomly turn the interior light on while setting in the driveway in the middle of the night that was fun because the batteries didn't like it at all 😕
 

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Hello !
E-Bay has 2 of them they are the 1 & 3 spots that pop up if you put in 2002 oem & the part # $280.00 - 215.00 was what was listed
 

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4c7z-15604-ac | eBay

Ebay has nine used VSM listed that say that they are compatible with your part number. The part number is not the same, but they say that the part is compatible with your part number.
 

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Discussion Starter · #7 ·
Thanks for the help I really do appreciate the help.
I just ran 4C7Z-15604-AC on ebay and it's not there? Maybe two different dealers gave me a wrong number, not the first time for that to happen. I tried entering the K between the 5 and 6 like so many of the p/n have, nothing? I ran the AD instead of AC still nothing. I just don't want to go through all the hassle to replace this thing and get it programmed only to find it's not the right VSM. I did see on an older post that p/n 4C7Z-15604-AD was the updated version of the AC but still no luck.
Bill
PS
Will any part number work as long as it gets programmed correctly?
 

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Thanks for the help I really do appreciate the help.
I just ran 4C7Z-15604-AC on ebay and it's not there? Maybe two different dealers gave me a wrong number, not the first time for that to happen. I tried entering the K between the 5 and 6 like so many of the p/n have, nothing? I ran the AD instead of AC still nothing. I just don't want to go through all the hassle to replace this thing and get it programmed only to find it's not the right VSM. I did see on an older post that p/n 4C7Z-15604-AD was the updated version of the AC but still no luck.
Bill
PS
Will any part number work as long as it gets programmed correctly?
I just ran that part number on ebay and got eight results. Yesterday, I got nine results when I ran that part number on ebay. I don't know why you are getting nothing. You could click the link that I gave you yesterday or the link below and it will give you the eight or nine results. As I said yesterday, the part number is not the same, but the sellers say that the part numbers are interchangeable. If you are not convinced of that, then I would contact the sellers and discuss it with them, then you can decide whether or not you thing they are telling the truth or lying.

4c7z-15604-ac | eBay
 

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Discussion Starter · #9 ·
I never said anyone was lying to me. My concern was and is that I just do not want to go through all the hassle to change and program a VSM only to be told it's not the right one. I did end up getting back in contact with the local dealer here and came up with a good alternate number and ordered one through ebay for $223.
Thanks for your help I really do appreciate it.
I am done here and now understand why I haven't been back here in so long.
 

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Glad to hear that you found the part. Hope it is the right one.
 
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Discussion Starter · #11 ·
The dealer's part guy did tell me that all part numbers are not interchangeable with each other but the last two letters do reflect upgrades, like the AC to AD with the AD being upgraded for the AC. I am at the point that I honestly believe that whoever it was that engineered the VSM system was an evil person.😉
 

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Glad you got some good information from the parts guy. I hope that he is right.
 
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Discussion Starter · #13 ·
Thanks again for your help.
Bill
 
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2002 Ford F-250 Lariat 4x4 - Supercab 7.3L Powerstroke
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Thanks again for your help.
Bill
Following this post too. I am dealing with the same issues with mine and in the process of getting all of this figured out. My part number is 2C7T-15K602-AF. Truck is a 2002 F-250.

There's not a lot of info out there so I'm thinking of making a youtube video throughout this process to help others maybe... But, when you take your VSM out be sure to check the three always hot wires on the harnesses and the one ground wire. Ensure you've got power to it that seems normal.

Other than that, I am also well aware of the difficulty of finding a replacement part. I found this website called RepairLaboratory.com that repairs them for $180. I'm a little bit sketched out by them though. Maybe I'm being too critical but I want to know I'm not going to screwed...
 

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Following this post too. I am dealing with the same issues with mine and in the process of getting all of this figured out. My part number is 2C7T-15K602-AF. Truck is a 2002 F-250.

There's not a lot of info out there so I'm thinking of making a youtube video throughout this process to help others maybe... But, when you take your VSM out be sure to check the three always hot wires on the harnesses and the one ground wire. Ensure you've got power to it that seems normal.

Other than that, I am also well aware of the difficulty of finding a replacement part. I found this website called RepairLaboratory.com that repairs them for $180. I'm a little bit sketched out by them though. Maybe I'm being too critical but I want to know I'm not going to screwed...
Update:
Also just talked to these guys on the phone: About Us
They were much more professional than any other people who have these modules in stock. They stock only new remanufactured modules and carry a 1 year warranty. They don't repair your part but you will have to send it back to them otherwise you'll pay a $100 core charge. $395 all said and done and you'll need the dealer to flash...ouch but this seems better than any option I've found.

2nd Update:
Spoke to the diesel shops around me. The only one that has the capability of doing work on modules and is very heavily invested in vehicle computer systems repair recommended the above company. Said he has great luck with them and they work well. Says they aren't 100% perfect but 9/10 he has no issues. When he identifies a problem with their supplied part they send him a new one right away.
 

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Discussion Starter · #16 ·
Thanks for the updates and the link. I ordered a vsm through ebay on 7/2 as of today it hasn't shipped yet? The part number I ordered is 4C3Z15604-AC. My dealer tells me it will work and they can do the reflash/program if I bring the truck in with the old vsm readily accessible for $100. So now I am in the position you already know, hoping the replacement vsm will work.
 

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Thanks for the updates and the link. I ordered a vsm through ebay on 7/2 as of today it hasn't shipped yet? The part number I ordered is 4C3Z15604-AC. My dealer tells me it will work and they can do the reflash/program if I bring the truck in with the old vsm readily accessible for $100. So now I am in the position you already know, hoping the replacement vsm will work.
Sounds good, yeah hopefully they get the part shipped out to you. Mine got shipped yesterday when I ordered…hit them up if you have issues with your eBay dude as they have a whole bunch in stock. Shop I spoke to yesterday mentioned sometimes companies won’t actually have them in stock but will wait for an order, refurb it, then ship it to you. Hopefully that’s not what you’ve come across as it can take several weeks sometimes.

Are you just paying for an hour of work for the dealer to flash? I’m trying to avoid all the diagnostic fees, etc… since I already know what I need. Hoping the dealers will allow this as $100 seems pretty fair for what is most likely a 15 minute flash and done. You’ll have to update when you’ve got it all done.
 

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Discussion Starter · #18 ·
I'll keep you posted. Having a crewcab without the key fob gets to be real pain and also my dome lights are driving me nuts they always stay on till the battery times out. Ended up pulling bulb out of the rear one.
 

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2002 Ford F-250 Lariat 4x4 - Supercab 7.3L Powerstroke
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I'll keep you posted. Having a crewcab without the key fob gets to be real pain and also my dome lights are driving me nuts they always stay on till the battery times out. Ended up pulling bulb out of the rear one.
I hear ya, mine honks like the key fob locked it going 70 on the highway hahah!! Agreed, it’s got to stop!
 

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Discussion Starter · #20 ·
The continuing story of the VSM, just received the replacement VSM from ebay and it is not part numberI ordered? It's p/n 4C7T-15K602-AH the one in my truck is a 4C7Z-15604-AC I guess I will have to take it to dealer and see what happens. Speaking of dealer he now says the cost to program the replacement will be one hour labor at $170.
Maybe I will wait till the weather here cools down some, we're in a real heat wave right now. Temps have been 103 to 107 last two weeks. Inside my garage it's 102 right now.
Bill
 
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