I have posted about the auto 4wd not working properly in my 08 Hemi Ram before, I can't find much information on that but the four wheel drive problem got worse this weekend.

I put the truck in 4-low to back it up my steep yard because I didn't want it to spin the tires on the grass. When I tried to put it back in 2wd the volt meter pegged to the high side and my blower motor cut out and back on several times. It did not complete the shift back to 2wd. I set the e-brake and continued my work. I came back out to the truck and when I started it the transfer case was in Neutral, it was indicated by the N light on the 4wd switch and the truck would roll while in park.

I read the manual on how to remove it from neutral and that procedure didn't work. It would try and then revert back to N on the indicator. I also unhooked the battery for awhile, checked all the fuses, etc. No luck.

Next I pulled the shift motor off of the t-case and moved the control manually. First I found low range again, next I found 2wd and I moved it out of the yard. I messed with it some more and somehow ended up with 2wd lo range(front shaft spins freely) not sure how that happens. I moved the lever some more and got it back to 2wd.

Now I have a service 4wd light which makes total sense since the shift motor is off of the case and unplugged. However, on the first start in the morning the 4wd light is on and the front axle is connected(driveshaft locked in via CAD) but the t-case is not in 4wd. After I stop at the store for my morning drink it goes back to the service 4wd light beieng on like I would expect.

Sorry for the long post but does anyone have any idea what I am up against? I talked to the dealer and they will look at it for free or an hours labor if they gotta dig in. If its not module or computer related I will do all the work. I can dig into the t-case that doesn't scare me, but I don't want to dig in and find the problem is electronic.

And Lastly, what scanners will let me see 4wd operation? Does it take the chrysler scan tool to do so? Thanks for any help.

Its Frusterating that I abuse my jeep like none other, put it in 4wd while sideways with the rear tires spinning, broken axles, broken drive shaft joints, all this and the t-case is fine. I have this creampuff ram that never goes offroad and the 4wd is acting up LOL.

Thanks

Not sure of the problem but I've heard the TIPM causes various electronic issues on the 06 and later Ram.

After you backed up the hill, was the truck on level ground and in neutral when you tried shifting it from 4lo into 2hi?

Well not sure what your problem is ....but if you need parts I have them! I have a T case out of a 2008 Ram 1500 that only had 42k miles and the electric shift motor. So if you need to replace one of those give me a PM.

as for your light indicating 4wd, the light is actuated off the front axle CAD (atleast is was in early 2000s) so if the cad is locked in, the sensor thinks its in 4wd

I would never have guessed this but the transfer case shift motor was bad. They replaced that, cleared codes, and its all good.

Seen this problem while working at the local dodge dealer on 3 trucks. All 3 were 08 1/2 tons. Don't really know why it was just this particular year and model having problems. I'm thinking a programming issue with the TIPM. The actuator is the same part used for several years prior without issue. One of the trucks shifted the transfer into neutral and rolled down the owners driveway on its own. Shift actuators were first installed on 2 of the trucks but both came back shortly there after to have the TIPM and shift actuator replaced again. The 3rd truck got both a TIPM and
actuator first visit. STAR said one was causing the other to fail so they must be replaced at the same time.

When mine first messed up it went into N, luckily I had my e-brake on because my driveway is steep!