ncffs

positioning of the interior fuse panel is quite a challenge. 😉

I certainly applaud the effort there, that was very good thinking! But I would raise three technical concerns for further consideration: 1. Sensitivity of your voltmeter: I'm not sure whether the sensitivity of your voltmeter will be adequate to visibly detect a voltage level change in a regulated circuit, even under the proposed conditions. 2. Responsiveness of the voltmeter: I'm not clear that I've ever known the frequency or duration of the pulse length, but for certain values of frequency and duration, I would think the voltmeter would have a difficult time representing a change. Someone more familiar with the actual noise would perhaps be better able to assess the risk of #2 being an issue; the longer the duration of the pulse, and the lower the frequency, the more likely the meter will adequately display a variance. 3. Noise leakage into car circuitry: It does sound, from the messages above, as though the noise signal is being transferred through vehicle wiring. However, this does not preclude the possibility that, while the signal level is above the noise floor, it may be on the order of millivolts or even microvolts, and could even carry a modulation at frequencies far beyond what a voltmeter could represent. I would perhaps connect an oscilloscope to the 12V on the car, and watch the waveform pattern while driving. Given a suitable oscilloscope, that would address even #3, which while it has components of #1 and #2 included, is really a separate and distinct issue. Think here of the noise patterns introduced by leaky digital circuits into DAC systems, for instance, such as was common on older PCs, if that helps illustrate what I mean. You'd almost always need an oscilloscope to adequately represent what was happening.

It sounds like maybe a motor. My guess would be something like the fuel injectors. The problem would be narrowing it down, and I'm not sure the problem is something, like you suggested, that would be easy to get a lot of attention. I can't reproduce it because I don't own the same platform, I have a Fusion. So aside from offering advice which so far hasn't helped, I don't know how to help you here really. But I will say it sounds like something like a motor probably. AM noise is very low frequency compared to most systems in a modern car so I wouldn't expect anything like Adaptive Cruise radar, for instance, to be the issue. I think ignition or small motor (electric motor I mean), most likely. I wish you luck getting it narrowed down.

Does it change with throttle input (more gas making more, louder, or higher-pitched pulses)? I just wonder if it's the ignition spark or something like that. Of course that's still happening when you're stopped at a light, but only enough to maintain engine operation.

It sounds to me like maybe the ABS module, or possibly a wiring harness problem. I would lean more towards the ABS module though since everything seems related to that. However, given that every symptom you've mentioned is a safety issue, I would advise not driving the car until this is resolved. Personally, I would have it towed to a reputable shop because brake issues aren't something where you want to take chances. The fact the car is locking the rear brakes is another indication there is a severe failure of some type and, presumably, the car is (even under these conditions) doing its best to keep you safe by preventing driving. I also want to emphasize that I am not a mechanic, I just have picked up information about cars.

Also another little bit about this: From what I remember, there are two places this is at in your vehicle modules. The Body Control Module actually controls the signaling for the locks, and that's where setting is that actually enables this. Then there's the IPC Module, which has a setting that controls whether you can see/control this option in your Driver Information Display. So you can have it enabled without even seeing it as an option on your dash, or you can have it set up like mine where you can control it from the dash.

Hi bbf2530, I don't know if the OP's vehicle was purchased used, but my Fusion Sport does do this. Why? Because I enabled it with ForScan. It didn't until I went in and changed that though, because as you said, the Fords and Lincolns don't do that normally. But what I'm thinking, is maybe the OP's car was purchased used, and whoever owned it before made ForScan changes.

I don't personally have the 2.5 in mine but everything I've ever seen about those 2.5s tells me they are extremely reliable. Many people seem to be able to get high mileage (sometimes even 300k+) out of them. They are very simple compared to a turbo engine, so a lot less to go wrong. I would feel very comfortable with one of those for a situation where I needed high engine reliability.

The other thing that comes to mind, since it's happening in one car and not in several others, is that you might have a problem with your receiver on that station. With AM in particular over the years, I've seen they can develop areas of the dial where the reception is poor (not specific to Ford, just in general), but yours is brand new so don't think that's the problem in your case. Honestly I'd reach out to your dealership about it if it happened to me because my AM radio gets used all the time. If you can, maybe ask to get into another 20 Aviator and check the reception on your station. That might be interesting. In the worst case, if it's something about the design of the radio in the 20 Aviator (I doubt this but I'm just saying if it is) you should be able to listen on Bluetooth by streaming it, as an option. But I suspect something is wrong with your particular radio.

Is it happening in a particular area? I listen to AM a lot and it really depends on the area as far as interference goes. For instance, solar farms spew out all kinds of nasty RF interference that messes with AM for miles around.

No to argue with them or anything but the SCCM definitely has configuration it stores. You'd want to compare the new values to the ones from your old module. I forget how many lines it's got though. Honestly though, since it's all there in your steering area I'd personally take it in and let Ford repair it right. That's just too critical a system to take chances, in my opinion, even though so far you haven't mentioned it directly affecting steering or anything like that. But remember on these newer cars the steering is electronic, not mechanical, so if you do have a possibly failing harness or something I'd be a bit concerned there. Good luck in any event!

Since you've already replaced the SCCM, just off the top of my head I'm wondering about the connector wiring in the steering wheel, harness wiring, maybe even a bad gateway module. It's always hard to do internet diagnosis though. Any chance you've got rodents? What about DTCs? I imagine there's no MIL or you'd have mentioned it, but what about DTCs?

Thank you!

Does anyone know how I can get a copy of the 2018 Fusion ESourceBook? I don't have any idea how to get it but I've heard there is one. Thank you in advance!

I'm considering adding these to our 2020. What's involved with wiring them in? I'm handy with basic electronics and so on but haven't talked anything advanced with a car, really. Did you have to remove the bumper or do they go in from the front? How do you route the cabling to the dash?