We have the MP3022 transfer case. I'm trying to get some info on how it slips into AWD mode.

My understanding is that it is in 2WD until there is slip. However I believe that I may have also lock itself into 4WD at some temperature in cold weather?

In the winter when we're traveling on extremely slippery snow covered roads, can we lock it into AWD outside of shifting into Low? If not, what speeds is the low gear ratio safe to drive at?

Thanks!

 

Nope its all automatic except in the Hemi AWD models where there is a selectable Low range AWD. It is based on rear wheel slippage
STEVE

 

Steve is right and I can Attest that The AWD works incredibly fast. just a mild chirp under full throttle sends power to the front tires and using brake TQ (aka brakes) can send more power to opposite front wheels. Low range is for low speed pulling power. you wont need it. this truck is awesome in the snow.

 

Just to clarify, the Hemi is always AWD, the selectable low range is additional. And I believe it also locks the transfer case so it is truly 4WD in low.

 

Agreed, works well on a slippery boat ramp as well

Although it's hard to call these trucks without a frame and bed. lol

 

Just to clarify. Hemi is always in AWD as in rear wheel drive with slip transfer?

 

Well, whatever is normal for the other AWD Durangos.

 

According to the manual the front axle is always connected, but no power is sent to it unless the rear slips. Contrary to what others have said I don't think it engages quickly enough; I've had some scary slippage going around corners. I wish there were a way to force it into AWD mode; I don't want it to slip to begin with.

 

I think that's the same way my z71 works when I put it in awd it kicks in when one of the rear tires slip. That should be the same principle as having a awd switch.

 

That's I was afraid of. Had read something online a little while back about AWD in the charger/300 sending power to all 4 wheels constantly when the temperature dipped to a certain point, kind of like 4Hi in a jeep.

Ah well, will get a feel for how it performs in a few weeks when our first blizzards hit. Luckily I still have my FJ Cruiser in case we get snowed in.