You probably think it only engages 4WD but it likely also modifies the gas pedal force and shift strategy. Meaning that it will upshift quicker to try and minimize wheel spin and it takes more force to push the gas pedal.

I actually used to use it all the time in my 2018 2.7 EcoBoost because I liked the way it engaged the higher gears sooner which I think was really my work around to some of the 10 speed shift anomalies. But in my 2018 it didn't engaged 4WD and now that it does in my 2024 I won't be using it as much, then again the PowerBoost and it's transmission somewhat negates my need for it.

 

So my question would be is the truck suppose to go into 4wd when in slippery mode?


Im going to check later, but Im almost positive when I switched it to slippery/snow I saw my 4x4 light come on.

 

Hopefully you weren't one of those pickups they showed on the news yesterday and this morning, but "freeway speed" when the roads are slick like they have been since yesterday is per conditions, which often means 50 mph and lower. I know a lot of folks will push 70 mph, but that only works until it doesn't and then it's too late. I'm fortunate to have auto-4WD but after 40 years of driving from Mpls southwest suburb to Mpls north east suburb 5 days a week, I still keep my speed down with these types of weather events. It adds maybe ten minutes to my drive time but I've never been involved in a weather related driving incident in all my time but I've certainly driven by a LOT of them.

Also, I rarely use "Snow" mode on the highway because I am used to my truck's throttle response in "Normal" and it is like driving a different vehicle in "Snow" mode. Who wants to get in and start driving a new vehicle when the roads are suddenly slippery? I do switch to "Snow" around town occasionally before the plows are out just to play with the settings and see what they feel like.

 

Well, I could be wrong, but from what I understand when you stick it in snow/wet, it affects your throttle input and gear shifting, I think your normal traction control takes care of the brakes..
When you guys use snow/wet, does it shift into 4H, or 4A? Big difference between the two.

If you have 4A, you don't have ESOF, you have a TOD.

Don't know the trouble you guys have shifting into 4H or 4A have when on the move.The Transfer Case on either is designed to be able to do that.
Maybe things are completely different on your 14th gens, but I doubt it.
Read the manual?

 

Yes, it's supposed to go into 4WD.
The whole point of slippery mode is to give you traction control on all 4 wheels.
Same applies to snow mode.
You can flip it back to 2H manually, but then you'll be defeating the purpose of the drive mode.

As for switching at "highway speeds", depends on what you mean by highway speeds.
55-65 MPH is fine. The transfer case is designed for that. I recommend taking your foot off the gas during switching so there's no torque being applied to the drive line.
The whole process of engaging 4WD takes about a second or two to be fully engaged.
If you have 4A, let it rip. It has an additional electronically controlled clutch to control power to the front wheels.
With 4A engaged, the transfer case will regulate power to the front wheels. At highway speeds, it will mainly send power to the rear wheels and only to the front as needed.

 

Ah Ha!!! Someone read the manual. Highway speeds when it's so bad you need 4X4 usually is below the posted speed, as it should be. That said, I've driven around 55 before, but 45 mph is a decent enough speed as well.
Would someone clarify if that's 4H, or 4A, the TC shifts to when in snow/wet?

 

No one knows whether it goes to 4H or 4A? No wonder you guys are asking questions!!!!

 

Present truck is a 22 4x4 XLT 302a 2.7EB Payload Package truck that includes 3.73 gearing.

The XL and XLT and 401a Tremor have 2H, 4H, 4L not 4A like the upper models. 4H and 4L vehicles CANNOT be left engaged and forgotten like a 4A equipped F150. News Flash YOU the driver must think about what YOU ARE doing.

4H and 4L are for SLIPPERY or LOOSE surfaces and are not intended for extended driving on DRY or even with some types of modern tires DRYING or WET solid surfaces for extended periods of time.

The first mode used here when going out in snow and ice is ECO in 2wd that can and does work, too low of traction then 4H is engaged "as needed" and stay in ECO.

4H isn't going to slow the truck any faster if your going to FAST for conditions.

4H may in fact in certain circumstances can limit the ability to steer yourself out of harms way.

***** to the walls and ditch the #itc# are best played out in the wild not in traffic.

Slow down, be safe because your only a ball out on the pool table of life just waiting to be hit next.

Have a safe and Happy Holiday Season.

 

Ok so if it is suppose to engage 4wd, then what is the difference between putting it in 4wd or putting it into slippery mode since it seems like they do the same thing?

 

I'm having a hard time thinking if you put it in slippery mode, it goes to 4H, are you guys actually meaning 4A?