Manuals don't cover programming at all, so there aren't any facts. The FEH only has its own wiring diagrams and that's it!

Yes, I can say the TC is the same for both starting in '09 for the FEH. Of course, you have a electric motor which is used in reverse but wasn't there something about if a object is placed behind the rear wheel it faults out??

 

I had not heard of the "object behind the wheel", can you supply more details?

I am surprised to hear that TC can be the same, since it uses the ABS to individually stop a spinning wheel, and we know the ABS has custom programming for the FEH because of the regenerative braking. I realize that TC is used in acceleration conditions, but I would be surprised if there wasn't different computer code between the FEH and FE for anything involving ABS.

 

That was somebody from here that was at some HybridFest and showed Ford engineers. It may have been OT in a some post.

Yeah, ABS programming could be different but TC is a ABS function. The ABS module can take over control of the 4WD module under certain conditions. I quoted something from the manual about ABS and regenerative braking that somebody didn't believe but forget exactly what is was!

 

"...ABS has custom programming for the FEH.."


If you look at the base purpose of ABS then it is hard to see why there would be a difference between the FE and FEH in this regard. The primary purpose, reason, for ABS is to allow the driver to maintain directional control while braking so severely, or even lightly on a slick surface, that wheel lockup/skid would result, substantially raising the potential for loss of control, dramatically so for FWD or F/awd.

The only coupling with other systems that I am aware of is with the FEH regen capability. If ABS "discovers" it needs to actuate then the initial action will be to disable regen. Since that in itself will "lessen" the braking effort then that ABS action may turn out to be all that is needed to alleviate the impending wheelskid/locked condition.

As I have said before it appears to me that ABS should NEVER activate, not even disable regen, unless VSC, Stability Control indicates that the vehicle is wandering afar directionally or the driver asserts a directional correction that the vehicle does not follow.

In an absolute sense the only TC "tie" to ABS is the use of the brake fluid pressure provided by the ABS pumpmotor. ABS must be implemented on all four wheels wheras TC only on "driven" wheels.

VSC, on the other hand, must be fully integrated with both. VSC must be able to signal the TC system to apply braking to an individual wheel or wheels and/or signal ABS to "unbrake" a wheel or wheels.

 

"..Object behind the wheel.."

I can think of a VERY good reason for STALLING the electric drive in reverse INSTANTLY should an object of substantial resistance be encountered.

 

I believe the issue is that if you blocked the wheels so it trying to start with a "certain" load, it faults out but once moving it doesn't.

 

Whoa! I have not logged into this forum much lately - but felt I could weigh in here with some help. I quoted WWest original post in this thread because I think some confusion began at the start here. The first question to Willard was asking if you were interested in purchasing a Mercury Mariner HYBRID versus a Mercury Mariner (non-hybrid). If indeed Willard's interest is in the Hybrid Mariner - that would be a good fit here in this forum as most of us know the Mariner Hybrid (MMH) and the Escape Hybrid (FEH) are indeed the same vehicle with some cosmetic changes in the front and rear ends of the vehicles as well as some minor ones in the interior. It appears to me that WTPSKI who has an Escape (non Hybrid) likes to post here because of similarities between his Escape and the Escape Hybrid. I think his interest started around the operation of the AWD/4WD operation. Interestingly enough, as an Mariner Hybrid owner, I benefited greatly by WTPSKI posts as I have enjoyed a real 2 MPG gain all summer/fall by removing a "4WD" fuse based on information from WTPSKI in other threads on this forum. In closing - I posted only to help provide some clarity - not to sermon. Willard if your interest is in a new Mariner HYBRID - I think clearing that up the HYBRID point earlier in this thread may have avoided a lot of un-necessary angst and confusion.

 

Oops...my BAD..!!

I guess I took it for granted that this being a hybrid site.....

But, no excuses, I screwed the pouch.