CAN bus Failure

[Dfout]

Looking to see if anyone has had a similar issue. I currently have a 2019 Ranger XLT (located in Virginia) that I have almost 60,000 miles on it, and I seem to have a large CAN bus system failure.

The truck started to have issues about a month ago, the ford pass app would not connect and kept stating that I needed to update the system. Since I don’t use it ever I ignored it. About a week ago I started to get a error message while in reverse saying that the rear camera was unavailable. Finally, while on my way back from work and taking a off ramp particularly fast, everything turned off. No front facing camera, no cruise control, not 4 wheel drive and no terrain management system. Not sure what else stopped working, but that’s what was immediately apparent.

Error codes read as a CAN bus communications error, but that’s it. Can’t seem to find any wires physical damage/ connectors broken, but I haven’t been able to get to all modules yet.

I know that I his system is all connected on the same high speed CAN system, but I’m having trouble finding the exact wiring diagram for it. Is this a common problem or am I lucky enough to be a first? Seems like a pretty wide spread CAN bus failure, which can get pretty tricky. Anyone had a similar issue?

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[Dfout]

Photos of acquired codes.

 

[Dfout]

probably a loose ground, or hungry ass mice/squirrels eating your wires.

one of the worst things with codes, is all it takes is one failure, and others go offline because they are connected.
it snowballs.
you think the world is ending

Did you try a battery disconnect reset? and getting all the updates loaded?

Ford pass is useless, but update it anyways
Ford has had rear camera issues on many models, could be its own singular problem
the others...well.....world might be ending.

Battery reset didn’t work, grounds have been checked, no obvious rodent damage (although I haven’t gotten to every inch of the harness). I’m Just diving head first into CAN bus systems, hopefully it’s one module that’s tripping the rest. Ford is looking at it at the moment and they have gotten all the same codes I did, they seem to think the system is “overloaded”. Their words, but the tech couldn’t explain really what that meant!

 

[Frenchy]

Chances are you have some open wire somewhere. On some of the F series pickups it has been known to have wires get massed up with corrosion in the bottom door seal plates. For the ranher it is hard to say since I havent dealt with it much.

 

[SteamiestOyster]

CAN buses are multi-master distributed networks. There are no central CAN bus controllers, hubs, or components to replace. It's most likely a single module that is pinging all those systems you mentioned that has failed. Body control module?

 

[Dfout]

CAN buses are multi-master distributed networks. There are no central CAN bus controllers, hubs, or components to replace. It's most likely a single module that is pinging all those systems you mentioned that has failed. Body control module?

That’s what I am hoping, just never had this happen before. CAN bus is fascinating, been diving into it but it’s a lot.

 

[Apples]

One thing to understand about B-CAN circuits: They're digital and rather low current to boot. Their voltage range is from about .7 VDC to about 4.7 VDC. As connections corrode due to ambient conditions, even small amounts of corrosion will likely cause issues. I suspect Ford has seen these type of issues before, even though your local dealer might not have.

 

[Jason B]

One thing to understand about B-CAN circuits: They're digital and rather low current to boot. Their voltage range is from about .7 VDC to about 4.7 VDC. As connections corrode due to ambient conditions, even small amounts of corrosion will likely cause issues. I suspect Ford has seen these type of issues before, even though your local dealer might not have.

God help us all if we are seeing connector corrosion on a 3 or 4-year-old vehicle.

 

[Dfout]

God help us all if we are seeing connector corrosion on a 3 or 4-year-old vehicle.

Unfortunately for me there are a few factors that could’ve led to that. My windshield has been replaced four times now and the last seal may not have been good. Hopefully this is not a problem that is widespread if it is corroding of the wires

 

[Glocker]

Hey brother, good to see you over here. Bad to see you here for this issue. (-John Battersby)

 

[Apples]

Opinion...

We have all seen the Safelight ads on TV ad nauseam. They advertise how good they are about sealing, realigning electronics, and the use of specialized tools. What the don't tell you is, how they treat customers when they goof up, cut and/or destroy defroster wires! And heaven forbid, if you have to go back the second and third times to get leaks fixed! For me, never again!

There is another thing you want to keep in mind about after-market, non-Ford (et. al.) windshields. The glass for those with cameras and/or rain sensors, are different than your run-of-the-mill glass—it is special! In other words, after-market, non-Ford glass, may interfere with the camera in lane keeping applications. I can't speak for Ford, but Honda had a TSB about this issue, and how it effects the warranty. Fore warned, is fore armed!

 

[D Fresh]

There is another thing you want to keep in mind about after-market, non-Ford (et. al.) windshields. The glass for those with cameras and/or rain sensors, are different than your run-of-the-mill glass—it is special! In other words, after-market, non-Ford glass, may interfere with the camera in lane keeping applications.

I keep hearing this from folks.

Ford hasn't made their own glass for decades. They contract it out to Carlex. Who also makes the largest brand of aftermarket glass, Carlite, in the same plant, same line, same employees.

There is no such thing as "Ford glass" anymore. Fordlandia has been vacant for years.

 

[Frenchy]

I keep hearing this from folks.

Ford hasn't made their own glass for decades. They contract it out to Carlex. Who also makes the largest brand of aftermarket glass, Carlite, in the same plant, same line, same employees.

There is no such thing as "Ford glass" anymore. Fordlandia has been vacant for years.

You're not wrong that every manufacturer has their own quote on quote brand of choice that they contract with for certain parts like the glass. When they do that the glass is made to their specifications. Would another manufacturer it decides to get in on it the glass is not 100% to that specification and can cause problems if the vehicles systems are a bit too sensitive.

 

[Apples]

And Honda?

My old Ridgeline's lane keeping system, would not work after the glass was replaced. The Honda shop said it wasn't the camera alignment, but rather the glass. The after-market one was replaced with one from Honda parts. The same shop installed both, but the correct (Honda labeled) glass worked as expected.

I remember seeing a TSB on this from Honda, but they (Honda) have changed their public access to them you now have to pay!

 

[D Fresh]

And Honda?

My old Ridgeline's lane keeping system, would not work after the glass was replaced. The Honda shop said it wasn't the camera alignment, but rather the glass. The after-market one was replaced with one from Honda parts. The same shop installed both, but the correct (Honda labeled) glass worked as expected.

I remember seeing a TSB on this from Honda, but they (Honda) have changed their public access to them you now have to pay!

I don't know. I haven't driven a Honda in 30 years.

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