4wd on 2017/2018

[mlc2000]

Hi guys,

I have a '05 4runner wherein my 4wd is full time with 40/60 on 4hi and 4lo and I can lock my center differential to get 50/50 and all 4 wheels turn at the same rate.

I'm on toyota's site reading about the latest 4wd and beyond the buzz words, i'm trying to find info on how the 4wd works with part time as I just described above with mine.

Can anyone tell me how it works and what power is going to what wheels in the settings and what settings are available?

thanks.

 

[e60ral]

limited - full time 4wd, has a torsen center diff, works like yours

all models except limited - part time 4wd, it is either RWD or in 4WD it is locked 50/50 front/rear

 

[MissouriBreaks]

Some models also come with optional rear locker, for use in 4Lo only.

ATrak is also an option on some models, which in 4Lo senses wheels spinning and will compensate and hopefully get one un-stuck. I know it works well as it got me out of some mud a couple of years ago in my FJ.

 

[wfo9]

Always like to remind people 5th gen 4runners 2010 up to 2019 4wd models are all mechanically identical except for a few very minor details (like startup secondary air injection on 2013 plus models)..

The Limited model however does have full time 4wd with the lockable center diff. The rest are part time systems.

The trails also have a rear differential lockers.

Limiteds have optional XREAS shocks, Trails have optional KDSS swaybar system.

Those are the only real differences between any of the models.

Part time systems are 2wd until you shift to 4H which can be done on the fly up to ~50mph. However, tight turns (like ones you would do from a stop) cause binding between the front and rear axles since it is always locked and does not allow any speed difference between the front and rear.

In fact. most of the components are the same that were on the 4th gen with just minor improvements here and there. The only major feature that was removed in the 5th gen was the torsen center on part time models. The v8 option was also removed, but those were all full time 4wd on the 4th gen.

 

[mlc2000]

Thanks for the info guys.

One more follow up question. How do you find the part-time 4wd working with a partial snow/ice covered road where you have bare patches of asphalt?

 

[mscot]

I'd say the steering is a bit stiffer in that situation but nothing major. It's noticeable if you're looking for it - which I was.
That said, I forgot to take it out of 4hi when I left Copper one day and got on the freeway. Drove for a couple of miles and it was absolutely fine. As soon as I could I dropped down to 45 and shifted back into 2wd with no issues.