I dunno, I think my angle of attack might be to not make the parking brake, which is also meant to be usable as an emergency brake in the case of hydraulic failure, fucking electronic.
Cable actuated parking brakes have served mankind perfectly well for over 100 years. I get that innovation needs to happen over time, but the whole electronic parking brake phenomenon I think is really a case of pushing in the wrong direction. It’s needless complexity for the sake of needless complexity.
When competence is in play, a wire harness chafe issue is something that should be fairly readily accounted for in the design phase, I think. I’m not entirely sure an entire-truck-vibrator to snout out harness chafes is really necessary, but it’s probably something that a company as large as Ford could build if they really felt like it. It could have been any wire in any harness, potentially, causing no end of superficially mysterious issues.