Connectivity Dead - 2024 F-150 Lightning Lariat

[rugedraw]

Thanks for that tip, I was considering adding a battery disconnect switch to the 12v battery that would make this very easy also, but if the plug to the actual modem is that easily accessible, I'll probably go that route.

It's frustrating how non-fault tolerant the systems are in the vehicle.

A FORScan adapter will allow you to reboot the TCU and another other module without having to unplug anything.

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[ChippewaBarr]

correct. I pull back the trim piece behind the rear passenger seat and pull the plug directly. It is significantly faster than pulling fuse 32 (which doesn’t really work by the way) or pulling off the 12v in the frunk. It also requires no tool (now that I leave the holding clip off). I am really surprised others don’t report this as much. Most Ford pass issues, and HIS issues all point to the truck modem yet everyone blames the app or other equipment. I have proved all those by checking the truck connectivity anytime something else doesn’t seem to be working right.

Is there a proven reason why pulling Fuse 32 "doesn't really work"?
As far as I'm aware it's killing power to the TCU so wouldn't it be the same as unplugging it?

Genuinely interested since there's so much electrical work going on in the background of these vehicles.

Pulling the fuse has worked for me when connectivity loss happens so that's what I've been doing, but I'm open to more robust solutions.

 

[TaxmanHog]

I've never had issues with any control modules on my truck, so no first hand experiences.

It is possible that either fuse might solve the problem, no doubting those who had success with fuse 32, let's assume these two devices are in communication with each other, causing the chain of com's to stop, try pulling fuse 8 the next to see if the same positive result is achieved.

32 is listed as Radio / Enhanced central gateway
8 is listed as the power to the Telematics CM & Power tailgate CM

 

[tearitupsports]

@PrimeRisk @TaxmanHog . Do either of you use Apple Carplay normally? How about the Alexa built into the truck. I have suspicion that either of these or both are causing some of the modem issues. Just curios to see with other people that have had issues and those that have had no issues.
For reference I have had the modem crash while playing a song on the Amazon music app (truck one, not phone) and having a teams notification come in on my phone (carplay).

 

[TaxmanHog]

@PrimeRisk @TaxmanHog . Do either of you use Apple Carplay normally? How about the Alexa built into the truck. I have suspicion that either of these or both are causing some of the modem issues. Just curios to see with other people that have had issues and those that have had no issues.
For reference I have had the modem crash while playing a song on the Amazon music app (truck one, not phone) and having a teams notification come in on my phone (carplay).

I'm an Android Auto user, I do not use Alexa or Amazon music.

I have the Sirius app on my phone which does port the the Sync screen via android auto but I never use it, I use the Sirius standard Sync app.

 

[tearitupsports]

I've never had issues with any control modules on my truck, so no first hand experiences.

It is possible that either fuse might solve the problem, no doubting those who had success with fuse 32, let's assume these two devices are in communication with each other, causing the chain of com's to stop, try pulling fuse 8 the next to see if the same positive result is achieved.

32 is listed as Radio / Enhanced central gateway
8 is listed as the power to the Telematics CM & Power tailgate CM

I don't seem to have a fuse 8. The Fuse box goes 4,5,7,9,11, etc.

 

[tearitupsports]

Is there a proven reason why pulling Fuse 32 "doesn't really work"?
As far as I'm aware it's killing power to the TCU so wouldn't it be the same as unplugging it?

Genuinely interested since there's so much electrical work going on in the background of these vehicles.

Pulling the fuse has worked for me when connectivity loss happens so that's what I've been doing, but I'm open to more robust solutions.

So I had my modem locked up all day, and just went and pulled fuse 32, which reset both my radio and my modem (it seems). I will say my comment on pulling fuse 32 doesn't work goes back to before I had fixed my battery voltage sensor, which I do think contributed to some of the issues. I will see how it works post reset using the fuse rather than the modem cable directly.

 

[TaxmanHog]

I don't seem to have a fuse 8. The Fuse box goes 4,5,7,9,11, etc.

What year is your truck??

The graphics I posted are from the 2022 Owners Manual

 

[tearitupsports]

What year is your truck??

The graphics I posted are from the 2022 Owners Manual

It is a 2023 MY, although it has an october 2022 build date.

Upon looking at the actual fuses it seems that fuse 8 and 9 are the same physically.

 

[TaxmanHog]

It is a 2023 MY, although it has an october 2022 build date.

EDIT: never mind, fuses at locations 7/6, 9/8, 11/10, 13/12, 15/14, 18/17, 20/19, 22/21 cover multiple circuits, FORD ya need a better & clearer way to document this !

I looked at the MY23 owners manual, same layout.
Note the graphics makes it look like one fuse, IIRC they are seperated I've modified the image:

 

[tearitupsports]

I looked at the MY23 owners manual, same layout.
Note the graphics makes it look like one fuse, IIRC they are seperated I've modified the image:

No it really is one large fuse. There is nothing that actually says 8. It really should say 8/9.

 

[TaxmanHog]

Well golllly [/gomer]

If I'd actually gone out to look like I just did on my coffee run, snapped a photo!!!

I stand corrected.

 

[ChippewaBarr]

I've never had issues with any control modules on my truck, so no first hand experiences.

It is possible that either fuse might solve the problem, no doubting those who had success with fuse 32, let's assume these two devices are in communication with each other, causing the chain of com's to stop, try pulling fuse 8 the next to see if the same positive result is achieved.

32 is listed as Radio / Enhanced central gateway
8 is listed as the power to the Telematics CM & Power tailgate CM

No it really is one large fuse. There is nothing that actually says 8. It really should say 8/9.

Interesting...when I'm back home I'll go out and check mine as well and provide another pic.

 

[PrimeRisk]

@PrimeRisk @TaxmanHog . Do either of you use Apple Carplay normally? How about the Alexa built into the truck. I have suspicion that either of these or both are causing some of the modem issues. Just curios to see with other people that have had issues and those that have had no issues.
For reference I have had the modem crash while playing a song on the Amazon music app (truck one, not phone) and having a teams notification come in on my phone (carplay).

No apples allowed, so no carplay, but I do use Android Auto all the time and to your point, it was working wirelessly while the rest of the connectivity was dead, meaning that the WiFi hotspot that the sync system sets up was functional.

I do use Alexa in the truck on a regular basis, but none of this seemed to cause the crash.

 

[tearitupsports]

So after pulling fuse 32 and going on one trip of about 2 miles, the modem was locked up again when re-starting the truck. Interestingly enough during that time I received the karaoke 10.1.0 OTA.

I believe this is why I say that fuse 32 is not a reliable solution though. I believe there is something else going on that the fuse just doesn't take care of. I have gone ahead and pulled all 3 connectors off the modem for about a minute. The next time I will pull both fuse 8/9 and 32 at the same time and see what happens. If that doesn't fix it, then I will pull the whole battery terminal, as I should be up to date on software after the 10.1.1 update.

Here is a pic confirming the problem, even though I already knew what was going to happen. This is the charging location app. For reference this is at home parked in wifi zone. If the modem was working it would show the wifi icon with full signal and the up/down arrow icon.

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