WWWPerfA_ZN0W

Out of sheer respect for OP, I shall join this bidding war. $5.55 But seriously, GLWS!

2015+ Edge, 2016-2018 MKX, yes.

Check blower fan operation and coolant level. Coolant should be at the top of the COLD FILL RANGE for best results. When was the last time you changed the cabin air filter?

Good to know

Is it gas or propane smell? Is it under hard acceleration or under cruise / mild acceleration, as long as A/C is on? The exhaust flaps behind the bumper cover may be stuck open. The flex pipe in the exhaust may be cracked or broken. Propane smell usually happens on AWD vehicles when the PTU fluid leaks out.

You can subscribe to any number of online services that will give you access to shop manual type stuff. Chilton, Mitchell, Alldata etc. Plus you would gain access to TSBs and Recalls relevant to your specific vehicle. You can also purchase a PDF / searchable PDF of the shop manual, I have not tried that route though.

Not only is it hard to initially source the product, but then you have to work equally hard to find a replacement. Kudos for breaking down the walls.

Excellent info and trackdown. Thanks for adding your experience to the forum.

If the failure is intermittent, there could still be a problem with the starter (e.g., internal short). Did you by any chance observe the RPMs at the time when it was spinning but not engaging? When you had the starter tested, was there a readout of how many amps it was pulling? The expected values for a 3.5/3.7 setup: General Specifications Item Specification Normal engine cranking speed 200-250 rpm Starting circuit maximum voltage drop (Engine at normal operating temperature) 0.5 volt Starter motor maximum load current draw 800 amps Starter motor no-load current draw 60-80 amps Starter motor normal load current draw 130-190 amps

The longterm thing to do in such cases is keep the vehicle on a tender.

I know the X4 does, not sure about the Livewire, best to ask an SCT tuner like Unleashed Tuning to make sure. Have the strategy code handy.

How many miles on your Edge? Don't typically see issues unless located in the "hot zone" - Arizona, Louisiana, Florida, Texas or the like. Failures are really rare. Have you checked the battery and cabling?

Check the RDU and the driveshaft in that case. RDU is not nearly as frequent a failure point as the PTU, but it does fail albeit with the same symptoms as the PTU. Symptoms might also fit a sticking caliper, need to remove and inspect. Rear calipers more frequently have an issue than the fronts since they serve doubleduty as master brakes and parking brake. Especially if you park on a hill and use the parking brake. That is the brakes locked up after getting hot, heatsoaking, and causing all kinds of problems if left that way longterm, especially in humid weather or freezing conditions.

Grinding can also come from ABS components / traction control in action. It is hard to distinguish traction control from AWD and ABS as they all work together to provide their functionality. Passenger side would be cause to check the PTU fluid more closely, maybe run a test for ferrous particles.. How many miles do you have on it? It MAY be perfectly normal tho, given that you have inspected the usual suspects and found nothing.

I will hit the revs in my 3.5 (2007) and enjoy the engine growl. But seriously, Ford is also biasing powertrain performance, so I wouldn't put it past them to make the 2.0 look good while the 3.5 languishes. Just the way it goes as older products get decommissioned.