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KEY FOB VSM ??

4629 Views 26 Replies 5 Participants Last post by  SamTruck
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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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...
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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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.
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!
Ah ok. Yes there is a lot of talk about how different P/Ns work with different trucks - though annoying when you don’t get exactly what you ordered. I am curious if I’ll have the same deal with the one I ordered.

That’s more like it! Unfortunately…. I was expecting something like a buck 70. With waiting, just be sure that your eBay dude doesn’t have a time period for a core return that you don’t miss. I saw some did and some didn’t when I was still looking on eBay.

Also you can plug that new one in to see if it already flashed to a truck of your body style. Before you go to the dealer. Unlikely but never know. If so you saved yourself $170.

Another thought I had…there’s a YouTube vid of a guy that runs a gauge cluster reman shop and shows how he fixes them. 9/10 it’s loose soldered connections on the circuit board. You know, the whole Windows/radio/cluster issues our trucks have when the cluster goes bad. I’m starting to wonder if this is a similar case with our VSMs and if we got one of those very small soldering irons along with the microscope, by resoldering all of our VSM board’s connections if it would work again…
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Agreed!! Good luck, curious if it ends up bringing your truck back to normal! May need to go through your steps to reprogram your fob - turn the key 8 times in ten seconds thing to reprogram your fob to verify functionality… if it’ll even do it without the dealer sticking his hands into your pocket…
Hey Bill. My VSM came in from Auto ECMs. I installed it as soon as it was delivered by UPS. Feels like the original part fit & finish wise. Original part number for replacement too. Disconnected batteries, plugged in module, reconnected batteries as to not arc connections on this apparently sensitive module. Everything works in the truck again and I have power locks, key fob, door ajar light is off when it should be, and radio off when it should be. I don’t even need to go to the dealer to flash since I guess they did it for me bc I did a replacement with exact match P/Ns. So all said and done I’m in about $450 after I pay for shipping to send my original back for the core charge return and have a 1 year warranty.

Let me know how yours goes once you test it out. Also don’t forget about the 8 times back and forth in ten seconds from OFF to RUN for your key fob programming. Mine instantly recognized my fob again once I programmed it like that, imagine you’ll have to do that too.
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Hi folks, if anybody else happens to see this check out this video I made on YouTube that helps you walk through it. Tried to capture as much VSM knowledge I was able to acquire through this repair. Hopefully this helps someone. Reach out if you need anything.
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