I can't remember this being the case with my last 4 F-150's with on-the-fly 4x4. While switching back to 2WD going 35mph+, the 4x4 light goes off, but it doesn't actually disengage until you slow down, has this been forever and I'm just oblivious?

 

If I shift my '10 XLT's tranny out of 4WD to 2WD at 60 mph, the productivity screen tells me while it is shifting and when the shift is complete.

It does not require me to slow down.

 

My screen also shows the shifting to 4x2 is complete, but I can hear the whirring of the 4x4 still engaged, and it's not till I slow down to 30, that I hear the change.

 

Call me an idiot, but Why would Anybody in their right mind be shifting in and out of 4wd at 35mph, Never mind 60mph !!

 

35 seems like a good speed for a 4x4 on snow covered roads, 60 is a bit fast....

All depends on the road conditions, I rarely go slower than 35-40 on bad snow covered roads, if I do it's because some hippy in a Prius is holding up the show. Otherwise it's gotta be ice before I slow down more than that.

Shift out of 4x4 when you get to dry pavement, @ 35 that seems completely normal to me.

 

In 24 years of driving 4x4's I have only used 4wd for actual road travel one time. Typically my 4wd use is low speed driving, up steep driveways, getting through snow banks, getting out onto the road from a parking lot so I am not sitting there spinning my wheels with traffic bearing down on me etc. As soon as I am out on the road and rolling I shift back into 2H. With my typical use being like that it is hard for me to fathom using 4wd at road speed.

 

I thought the ESOTF electronic shift on the fly ment you could put the truck into 4wd at any speed. I put my truck in 4wd today doing 60 or 70. boy did she make a bang. ha.

 

So let me get this right.............

Even tho we have electronic 4x4 option 'shift on the fly', you guys slow down to 40 mph to select 4x4?

And then only drive it 40mph????

BBBBBBBbbbbWWWwwwwwwwwHHHHHHHHHaaaaaaaaaaaaaa

Sure you aren't getting out of the cab and locking the hubs, too?????

 

Again this is just something I don't understand.
If the road conditions are at a point where you feel the need to engage 4wd for the added traction. What the hell are doing driving 60-70 mph ?
If your able to be rolling along at 60-70mph in 2wd, what do you figure your going to gain by engaging 4wd ?
Even if the truck is designed to be able to shift into 4wd at those speeds, wouldn't simple common sense tell you that it probably isn't the smartest or safest thing to do?

 

I have to say there are plenty of times that I leave my community (a lot of hills) in the snow when I am in 4x4 (and need to be) then merge on to a highway and shift back to 4x2 and its always above 35 mph. I havent done it yet with my 2011 but did it a lot with my 2005.

 

Its easy to see when you need to shift in and out of 4x4 at those speeds. Live in a town or city that does a **** poor job of cleaning the roads, or a windy location. You might be traveling along in 2wd, then get to a section thats snowcovered. Instead of slowing down and holding up traffic, switch to 4wd and continue on.

Or if theres two lanes, and the outside lane is crap but the inside lane is clear, and you want to pass the people driving little cars with summer tires on, you throw it in 4wd and pass them on the right side.

I can come up with other instances where 4wd is needed if you want to hear?

If your driving along a Highway and its snowcovered, what are you gunna do, drive 35? Gunna be a long trip.

I should clarify, im in canada, and my speeds quoted on this thread are in Km/hr, so you can divide those numbers by 1.6
I would never switch to 4wd doing 60MPH, thats a bit much.

 

To be driving 60mph on a slippery snow covered road is just plain assinine. IMO
At 60mph on a slippery snow covered road, somebody pulls it in front of you, you have to slam on your brakes, what good is your 4wd going to do
you then ?
Let me answer that for you. NOTHING
The traction advantage that 4wd provides doesn't mean you can throw common sense out the window but apparently there are plenty of people who do.

 

Try living in Michigan. Our county stopped plowing and salting the neighborhood roads to save a buck, there are cars stuck for 2 minutes trying to get started at each light, and I just kick into 4hi and drive on, going maybe 30mph tops per the conditions, but then I merge on to the salted, clear, freeway, and I don't know anyone in their right mind that would want to still be in 4WD while cruising at 65mph on a freeway, hence I switch it to 2WD. But I'll refrain from calling you anything. But back to the OP's (me) original post, anyone else notice it won't disengage above 30mph?