akirby

Exactly. It's the fans. Very common problem.

No but there are different ones for AWD vs FWD. This might help:

In that case it's almost certainly the fans. With the engine running put A/C on Max and both fans should be on. If not replace the fan and controller as a unit with Motorcraft parts (not Dorman).

Do they still have the red dots where the physical door locks used to be?

Do you have a 2019 ST or something else? What exactly are you trying to do?

It's possible the "B" version is the base version and doesn't support the rear speakers. Whereas the "E" version does. DSP may only be testing the amplifier connection which is fine but the head unit may not be putting out a signal.

Dropping the tank might be the only way. How much is in it now? If it's a half tank or less you might be able to fill it up with pure gasoline and dilute it enough to get by and do it again at 3/4 tank. But use pure gasoline not E10. Octane isn't the problem - ethanol has a lot higher octane than E-10.

The clutch on the rear diff is electronically engaged via the solenoid when rear torque is needed. I'm not sure if anything else in the FWD drivetrain is connected to the PTU. If not then removing the gears and driveshaft seems like it would work. But if you're going to do that much work why not put in a new PTU yourself, add a drain and change the fluid regularly? Should be a lot less than $1500.

You can’t change the factory code - only add additional codes. You need 2 keys anyway - go get another one and you can get the factory code.

It is not based on any existing vehicle platform - it’s a new dedicated BEV platform. Expect sub 4 second 0-60 performance with handling to match.

Of course not. That defeats the purpose, which is to prevent someone unauthorized (a valet, a mechanic, a thief who has one key) from making a duplicate fob. Only the owner would have two different fobs so that makes it reasonably sure that you're the owner or at least authorized to make a 3rd fob.

Is the FCA in auto mode or manual mode? Is the edge in Sport mode auto?

No way around paying a dealer or a locksmith with a Ford diagnostic computer.

Actually it engages the brake on the spinning wheel AND cuts torque if necessary.

It’s not a defect and not a safety issue. That’s just how the transmission functionality was designed and that’s exactly what Ford will say - because it’s the truth.