What is 4x4 AUTO in an F150.

Рет қаралды 13,110

4 жыл бұрын

In this video i talk about 4A (4x4 auto) on my F150. I show how the power is distributed to the wheels.
In my videos I compare the 3.5 EcoBoost to the 2.7 liter EcoBoost. both engines have their advantages and are great in different ways. comment below! thanks for watching!
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@Ahmad-yw5hl 4 жыл бұрын

Even though I don’t have F-150 but man I love listening to you

@barrykadonoff2393 Жыл бұрын

Very good explanation. Works totally differently than others where 4wd is added when needed rather than taken away when not, like with this truck. Thanks for making this video!

@calescue1018 3 жыл бұрын

Thanks man! This was helpful and informative

@franko5450000 3 жыл бұрын

Real talk, i signed in just to like/sub after this video (and I never do that). I noticed the same thing in my 2021 f150 lariat where the power engages/disengages depending on turns and acceleration. I had always heard that the 4wd was always active in 4A but noticed differences in distribution. Great video

@williamlamb4866 Жыл бұрын

Thanks for the great video showing and explaining the 4x4 auto.

@MrJbidwell 4 жыл бұрын

This video was super helpful. My F-150 lease is up in a few months and I've been thinking about moving up to a Lariat from an XLT just for the 4 auto. I thought it was mostly an AWD system - but this video showed me exactly how it isn't that. Thanks!

@DS-TRUCKS 4 жыл бұрын

Thanks a lot man!

@rdsii64 3 жыл бұрын

Since Ford uses the same 4 mode transfer case from the Raptor in all trims that have the 4A feature, This video helps explain what is actually happening. kzfaq.info/get/bejne/fsuGiNdopsrGfH0.html

@Werewolf_Six Жыл бұрын

THANK YOU, very much, for the VERY CLEAR explanation of the 4A setting.

@DS-TRUCKS Жыл бұрын

Your welcome

@jefferysharp3368 2 жыл бұрын

Informative! Had no idea, thought the front diff was different in Lariat and above. Thanks Brother!

@chillinspearfishin 2 жыл бұрын

thanks for showing the power distribution on the dash, nice job

@beauhambleton2656 3 жыл бұрын

Great video, explained a lot!

@rdsii64 3 жыл бұрын

The 4 mode transfer case doesn't actually cut power. The viscous coupler ( which is essentially a clutch pack) simply allows the correct amount of slippage when you are turning on a hard surface.

@Josegonzalez-vf4be 2 жыл бұрын

Thanks for your info wow I was impressed with sport mode and 4A...

@Xasukis 3 жыл бұрын

you did a great job nice video :)

@The0Almighty0Lord 4 жыл бұрын

that "woah!" at 10:51. I felt that haha

@SssandNBtwnMytoes 2 жыл бұрын

If It’s raining heavy and traveling on the freeway should I be in 4A or 4H

@paulrodrigues9603 4 жыл бұрын

I liked driving during snow storms in the company Expeditions w/ A4WD. When you hit the ruts of snow and ice it was smooth and more controlled. When I drove the Expeditions that didn't have A4WD when you hit deeper snow it would pull to the left and right. My Explorer has 4WD but there are no shifting controls. I handles the deep snow very well. It must have little elves in the (PTU) that keep you traveling along.

@DS-TRUCKS 4 жыл бұрын

Lol!

@MrLiljet 5 ай бұрын

Detroit checking in ✊🏾

@billiards98 4 жыл бұрын

When will Ford make it standard like chevy did back in 1999 my 2018 F150 XLT don't have it its always nice to have when main roads are dry and and side streets and parking lots are snow packed

@DS-TRUCKS 4 жыл бұрын

I've been saying that for a long time. Ford shouldn't make it this standard with four-wheel drive.. But they know how to get you!

@RallyWrex 7 ай бұрын

Was hoping it was Just an awd setting so i can use it in the rain and snow. Thanks for vid. Ill try it in the snow tomorrow

@DS-TRUCKS 7 ай бұрын

No, it's not all wheel drive. But you can use it in the rain.

@jiyeyuan 3 жыл бұрын

My 2010 F-150 Harley Davidson Edition has three modes: 2H, AWD and 4H. 2010, not a typo. I leave it AWD most of time. I think the difference between AWD and 4H is AWD uses the multi-plate clutch connecting the front diff and rear diff, whereas 4H locks front and rear together.

@brianberry161 Жыл бұрын

I really love that feature. To bad it wasn’t available in lesser models.

@DS-TRUCKS 3 жыл бұрын

In 4WD AUTO (4A), the TCCM continuously monitors conditions and driver input to send torque automatically to the front driveline by controlling the transfer case clutch, providing 4WD capability. The TCCM sends a duty cycle command to the transfer case clutch coil as a torque request based on combination of preemptive and wheel slip response algorithm. Preemptive response is based on steering wheel angle, vehicle speed, throttle positions and available powertrain torque. Wheel slip response is based on monitoring the average front and rear wheel speeds. When 4WD is no longer needed (during cruising or steady state driving) system defaults back to RWD mode by setting the duty cycle output to 0. The IWEs remain engaged to allow seamless torque transfer to the front driveline when necessary. TCCM increases the duty cycle to prevent or control slip under any of the following conditions: Slip is detected. Heavy acceleration (throttle position). Straight-ahead steering wheel angle.

@seadoomania 2 жыл бұрын

Eh mate , I’m stuck with this problem on my Ford F-150 raptors gen 2 with torsen axle 25000 miles Only when 4 wheel alto is selected the car jerks under acceleration in a straight line , no code has such and I’m from Australia and no one has any ideas ? 🙏

@ishmone21 2 жыл бұрын

Is it okay to leave the 4 wheel knob on 4a? Or leave it at 2h

@DS-TRUCKS 2 жыл бұрын

Best to leave Im 2 wheel of not needed.

@MichaelGreenNJ 3 жыл бұрын

Great Video. Do the front hubs lock immediately when you switch to 4WD Auto and stay locked until you switch it off? I noticed that I get some shudder from the front end when I'm in Auto and am maneuvering at low speeds when the wheel is turned almost all the way in one direction like when turning into a parking spot. This does not happen in 2WD. I lifted the front of the car in Auto and you can't turn the wheel. In 2WD, it turns freely. I know that there is only power to the front wheels after the rear wheels slip like it's supposed to. It's definitely not in 4WD all the time on auto. I have a 2015 Navigator. No 4WD low, no locking rear and no sport mode. Just the basic Control Trac system.

@seadoomania 2 жыл бұрын

Eh mate did you end finding out the problem I have similar issues with my raptor gen 2 starting to shudders after 25000 miles when 4 wheels auto is selected going in a straight line I’m from Australia and no one has any ideas , very frustrating 🙏

@MichaelGreenNJ 2 жыл бұрын

@@seadoomania what I’m describing is normal. The front hubs are locked in A4WD. It a tight turn on dry pavement the tires will skip a little because they aren’t all turning the same speed. What you described is not normal. Make sure your tires are worn evenly and all inflated to the same pressure. The shudder happens when they are not all turning the same speed so anything that causes even slight difference in size will cause it like mixing new and old tires.

@seadoomania 2 жыл бұрын

@@MichaelGreenNJ thanks for your prompt reply , I will rotate the tyres tomorrow the rear are new and the front are 70% worm so I did add a little more in the front 45 psi and 36 in the rear to see if it made any difference but still the same , shudder on light acceleration on a straight line , not turning the steering wheel I have the torsen front diff and it’s fine in 4 wheel high and low

@MichaelGreenNJ 2 жыл бұрын

@@seadoomania I didn’t realize it was happening in 2WD. Then it’s something else.

@seadoomania 2 жыл бұрын

@@MichaelGreenNJ hi mate , it only does it in 4 wheel auto

@supercharger437 2 жыл бұрын

So when in 4 low, are the front wheels locked in

@DS-TRUCKS 2 жыл бұрын

Yes

@cwqrpportable 3 жыл бұрын

Okay................ so just to be clear Lol. In 4A, you're saying that 4wd will cut out after a few minutes of hwy driving where no slipping is detected? So I can leave it in 4A while hwy driving and it will handle periodic ice/snow conditions at hwy speed? I live in Ontario, so this is essential, not a gimmick to have fun with.

@DS-TRUCKS 3 жыл бұрын

If you're curious of when for a cuts power to the front axle turn on your power distribution screen. It will show you when the front axle is engaged. None of the drive modes will save you from a sheet of ice. But four-wheel drive high is a little bit better than four-wheel drive auto.

@chuckb.5076 4 жыл бұрын

Good to know. Wife has it in her Expedition. Thank

@DS-TRUCKS 4 жыл бұрын

Thanks for watching and commenting!

@ej2863 Жыл бұрын

4A most fun for fast launch

@jorangel87 3 жыл бұрын

I thought 4a was 2wd all the time until it felt slipping at front. Then it engages the fronts

@rdsii64 3 жыл бұрын

Since Ford uses the same 4 mode transfer case from the Raptor in all trims that have the 4A feature, This video helps explain what is actually happening. kzfaq.info/get/bejne/fsuGiNdopsrGfH0.html

@brianberry161 Жыл бұрын

That’s how Chevy’s 4 Auto works, I never liked it.

@RallyWrex 7 ай бұрын

I heard its very bad to use 4x4 on dry pavement tho. I dont even use it in the rain

@DS-TRUCKS 7 ай бұрын

I use it in heavy rain on the highway. Nothing happened yet.

@MrPami9899 4 жыл бұрын

To be honest with you ,I hate that auto 4wd,I have it in my 08 ford explorer,I disable it, the truck drive and ride better, you can feel the front diff engage with a little vibrations on the steering , nothing crazy

@DS-TRUCKS 4 жыл бұрын

It's pretty seamless on this truck.

@MrPami9899 4 жыл бұрын

I like the gm design better, I got better gas mileage since I disable that feature,I only put it on during snowing weather and heavy rain,

@DS-TRUCKS 4 жыл бұрын

@@MrPami9899 GM has a pretty good design! I also use four-wheel drive and heavy rain

@detroit149 2 жыл бұрын

No offense sir but it does not cut the power in 4wd auto. It has a electronic Differential in the transfer case..

@DS-TRUCKS 2 жыл бұрын

There's a differential in the transfer case? U sure?

@detroit149 2 жыл бұрын

@@DS-TRUCKS The older AWD transfers case on the jeeps is what I was thinking about at the time.

@DS-TRUCKS 2 жыл бұрын

@@detroit149 just giving you a hard time.. differential is used to transmit power at a 90 degree angle to both wheels while allowing slippage between both wheels to allow for turning. The transfer case can have multiple disc clutches and planetary gear sets similar to a transmission but different from a differential.

@detroit149 2 жыл бұрын

They are also used in older awd transfer cases and heavy trucks and equipment but called power dividers not differentials prior to computer controlled. I didn't realize the new 4wd auto units were hydraulic clutch controlled.. I have a 2020 f150 5.0 that has it and am impressed how much better it operates then the older models.

@brentbradley6711 3 жыл бұрын

You said cut the power 10 times but wrong every time. Clutches in the t case take over on turns.

@rdsii64 3 жыл бұрын

For the most part you are correct. He is talking about a raptor, but Ford uses the raptors 4 mode transfer case in all trims that have the 4A feature. This video helps explain what is actually happening. kzfaq.info/get/bejne/fsuGiNdopsrGfH0.html

@brentbradley6711 3 жыл бұрын

@@rdsii64 Cut the power doesn't happen and this system has been around for a long time.

@rdsii64 3 жыл бұрын

@@brentbradley6711 You're saying that like I disagree with you.

@rdsii64 3 жыл бұрын

Since Ford uses the same 4 mode transfer case from the Raptor in all trims that have the 4A feature, This video helps explain what is actually happening. kzfaq.info/get/bejne/fsuGiNdopsrGfH0.html

@DS-TRUCKS 3 жыл бұрын

I've seen his vid. The system actually uses steering input to determine when to just power. It will also cut power at constant high way speed to save fuel, as soon as the vehicle is accelerated again 4x4 is re-engaged. When turning the system uses steering input to determine its time to cut power, then if slippage is detected it will engage 4x4. It's very noticeable.. you can also look at the power distribution screen it the truck.

@francoislavoie1387 2 жыл бұрын

The Raptor transfer case is different than the one that is in every other 4A trim. the non-raptor tcase relies on clutches in 4hi, whereas the raptor tcase will lock into 4hi. it's also beefier when you put them side by side on the shop floor.

@cwqrpportable 3 жыл бұрын

I have a suggestion for anyone wanting a clear explanation of their 4A transmission mode, please watch the "Engineering Explained" video at this location kzfaq.info/get/bejne/fsuGiNdopsrGfH0.html At the 3:54 mark, he clearly explains the 4A mode operation.

@DS-TRUCKS 3 жыл бұрын

Yes. I've seen his video. That's not how this 4a works in an f150.

@cwqrpportable 3 жыл бұрын

@@DS-TRUCKS ?

@DS-TRUCKS 3 жыл бұрын

@@cwqrpportable engineering explained says the system applies torque when it detects slippage. If that were the case you would always feel the system kicking in. In reality in four-wheel auto the system is engaged most of the time, and torque is cut In order to make sharp maneuvers, if slippage is detected during a sharp maneuver then the system will kick in. In which case you will feel the system kicking in.

@DS-TRUCKS 3 жыл бұрын

@@cwqrpportable just watch both videos and decide which one is correct. And mine I'm showing the power distribution. In his video he says this system will periodically disengage at highway speeds, which is true. What does it make sense is if the engages when slippage is detected then why does it disengage at highway speeds when no slippages is detected?

@cwqrpportable 3 жыл бұрын

@@DS-TRUCKS I'll stick with the explanation on the video I provided, thanks anyway