drolds1

The air bag replacement had nothing to do with this. The speaker is in the rear bulkhead. You can't hear anything from the sensors either. They're radar sensors. The crackling means the speaker has failed. This is not uncommon in first-gen Fusions/MKZs. It's a bit of a job to replace the speaker, but not all that difficult. This is for a Milan but the MKZ is similar: https://youtu.be/DUDkzFwQW1w

It's a 2 year-old post and the OP hasn't been active since then.

Or:

If the heat is heating but not cooling, the blower motors (there are 2) must be operational. Could be the front seat climate control module but, yes, the service dept. will have to scan the system for DTCs.

Aside from lighting up with the "Lincoln Welcome," that's also the side marker light, as required by DOT regs. Now that you've pointed it out, I'll be on the lookout for it. I'll need to be taking it in eventually anyway. I noticed the sound of air rushing by at above 35 mph and the traffic noise seemed much louder than usual. This a quiet car. It's the effect you get with a slightly open window but try as I might, I couldn't find an open window. I pulled up on all the switches but the problem remained. After a few days of this and starting to go slightly nuts, out of desperation, I pulled up on the driver's switch 3 or 4 times and heard the window move up a tiny fraction of an inch. Problem solved, temporarily at least. Sanity preserved, although my wife may not agree with that😜.

I assume you're talking about the left rear side marker light. I haven't had this problem.

There is no audible warning for BLIS (thank goodness). There is, however, an audible warning for Cross Traffic Alert, which is bundled with BLIS.

That's quite impressive, Devin.

Outstanding!

Welcome, Voorhees! Enjoy that 3.0!

It's been the same since 2013. Very easy DIY project.

That's how I get the system to "vent" outside, non-conditioned air if the ambient temp is cool enough to benefit from without running A/C.

I couldn't help but wonder if a malfunction in the Active Noise Cancellation (ANC) system is producing this sound. Just a thought.

I have a 2017 3.0 AWD as well. If you let off the throttle in the middle of a shift, you will get that clunk as the PCM tries to catch up with the mixed signals. IDK about the "flare" of the 2-3 shift. I'll take note of mine and check it out. I think I would have noticed something like that but I'll double-check. This engine is very sensitive to heat. I get that hesitation in the summer unless it's running on premium fuel. Also note that if you're a little exuberant with the throttle on takeoff, with 400 lb.-ft. of torque, you can easily induce wheelspin and TC will kick in. This cuts power and will give you the feel of a hesitation. Do not let the dealer run any fuel system cleaner through the intake. It is not recommended by Ford and could be harmful to your turbos. See this video.

Agreed. I've had a couple of electronic "brain farts" in that amount of time as well that I ignore.