Was wondering does anyone know the means by which the snow wet mode functions? That is to say are brakes applied to the spinning wheel? Is engine power reduced when a wheel is spinning ? Is the transmission shifted to a higher gear when a wheel is detected spinning? When a wheel is detected spinning does the ECU apply a combination of the above? Look as i might, I have been not able to find an answer as to how the snow wet mode actually functions. Thanks in advance.

My truck is a 2018 XLT, 15 axel code.

 

What's an "axel code"?

What Does Snow/Wet Mode Do For The F-150?

As mentioned above, Ford equips its vehicles with an advanced stability control system that allows the driver to select different driving modes to match the current driving conditions. The F-150 has a snow/wet mode that optimizes driver input and makes minute corrections for snowy, wet, slippery driving conditions.

While in snow/wet mode, the stability system relies on wheel sensors to detect losses of traction. When the system identifies wheel slippage, it applies corrective actions to regain traction. These corrective actions often include modifying driver input to steering, braking, and throttle pressure. However, they are usually so subtle that most drivers won’t notice them taking place.

https://vehq.com/f-150-good-in-snow/

 

If I recall corectly, in previous threads like this I was left unsure if and electronic limited slip differential function still exists.

It definitely existed in earlier years, but some claim it disappeared along the way.

 

It turns my truck into a gutless wonder.
Tried it a few times. I have to really floor it to downshift and maintain speed on the hill I live on. Seems to upshift earlier and downshift later. A lot like economy mode but worse to keep it out of the power band.
I’d only use it on very icy roads, like when I would just stay home if I could weather conditions.

 

It mainly adjusts how aggressively the traction control and stability control systems will intervene. It also will automatically turn on 4WD hi/lo or auto (if equipped) and adjust transmission shift points. In wet/snow traction control will be pretty aggressive and shift points will lowered. Sport mode will do the opposite; shift points will be raised, downshifts will be aggressive and TC and ESC intervention will be low.

 

It does not change the 4wd mode in my truck. As stated above all it seems to do is suck the life out of the truck.

 

Ford does not offer a clutch type limited slip any longer. I've never heard of an electronic limited slip but they do not have one now.
There are e-lockers but that is not the same as limited slip.

 

I was talking about an electronic- brake-based limited slip function using the ABS system to stop spinning wheels.

 

I drive almost exclusively in Snow/Wet mode. I find that it holds the gears such that it does not downshift overly often. It definitely upshifts early and gives a much "harder" feel to the accelerator pedal.

Does it "suck the life out of the truck?" Yeah, maybe a little. But I find it to be the best mode to smooth out my truck's 10-speed transmission. I have an XLT as well so it's not possible for it to control the 4WD operation. Does it alter traction control? I don't know that either but I assume the biggest impact is it's more often in a higher gear.

 

It's my regular driving mode as it give me the best gas mileage. And I like a "linear" pedal rather than a light switch accelerator. After spending significant time in all the modes - for me, ECO mode limits the transmission's strange/hard-clunking up/down shifts.