I guess the question could also be is there any compelling reason to leave it in 4A all the time.

4A is intended for slippery on road conditions and 2H for everyday driving in dry conditions. You can see Ford's intentions on F-150s and other Ford products with drive modes and terrain management systems. In normal mode, which is for everyday driving, 2H is automatically selected but in slippery mode 4A is automatically selected. Slippery mode is intended for winter weather conditions, rain, dirt roads etc. when wheel slip is expected.

 

Those vehicles count toward the CAFE calculation.

 

You missed my point... if it is done for CAFE requirements on a tiny percentage all the F150s produced, why not do it to all of them. XL and XLTs make up over 90% of F150s sold!

 

All of those XLs and XLTs do have 2H. None of them have 4A, so they're off topic here.
Also, the higher trim levels make up much more than 10% of total F150 sales.

 

I am just going by what I have heard...you have a link that shows sales by trim?

I live near the largest Ford dealer in the US. The number of white Ford XL F150s sold to businesses is huge compared to all the other trims. Also, almost all are 2WD.

 

Also off topic, and irrelevant since you were obviously just making it up.

LOL

 

That's interesting...I was thinking you were making up the CAFE requirement for the 4A mode.

BTW..the number of F150s that are 4WDs AND also have the 4A mode are pretty insignificant.

 

I'm wondering why 2H was retained in that obvious minority of F150s, and why it might be the default/preferred option, when there are many other vehicles equipped with full-time AWD or automatic 4WD with no 2WD mode. That's the topic. I didn't state the CAFE contribution as fact... it's just speculation, so I'm not interested in debating it. Ford does other things in the interest of boosting their CAFE numbers that are insignificant on an individual basis. I'm more interested in "significant" reason(s) why that **** in my truck should ever point to 2H.

 

LOL...so you weren't actually speculating...you were making it up!

I can tell you the exact reason they do it...less wear and tear! You can believe it or not believe it if you want. If you don't think that's the case, just run it in 4H all the time. It's your freaking truck!

Out of curiosity, how often do you use 4WD?

 

At the end of the day it's your truck and you can do whatever you want. But if the system fails due to excessive wear don't blame Ford. As I stated previously Ford intends for everyday driving to be done in 2H and 4A is for slippery conditions as indicated by the programming of their drive modes.