4WD Blinking Light / Not Engaging

[IceyTys]

Looking for some ideas here. I am getting the dreaded "Serv 4WD" blinking light and the system is not engaging. I tried looking up ideas on here and on YouTube but I've been w/o luck. I already replaced the front differential actuator with a replacement unit and no dice, still having the same issue. I was thinking of replacing the TCCM computer next, however when I am in neutral and I switch to 4WD I can hear the clicking going on down below, I would assume if I hear the clicks the TCCM is trying to switch into 4WD and thats not the culprit? Is there maybe a fuse or something I need to be looking for here?

Any help is appreciated.

Thanks.

 

[kapinallinen2]

Looking for some ideas here. I am getting the dreaded "Serv 4WD" blinking light and the system is not engaging. I tried looking up ideas on here and on YouTube but I've been w/o luck. I already replaced the front differential actuator with a replacement unit and no dice, still having the same issue. I was thinking of replacing the TCCM computer next, however when I am in neutral and I switch to 4WD I can hear the clicking going on down below, I would assume if I hear the clicks the TCCM is trying to switch into 4WD and thats not the culprit? Is there maybe a fuse or something I need to be looking for here?

Any help is appreciated.

Thanks.

Does it have any DTC`s?

 

[IceyTys]

Does it have any DTC`s?

DTC's??? No other errors or check engine type lights. When I switch back to 2wd the Serv 4wd light resets, so no issues that I know of besides wont go into 4wd.

 

[RamCares]

Hi there, should you choose to visit the dealer regarding this concern, feel free to send our team a private message for an extra layer of support.

Diamond
Ram Cares

 

[IceyTys]

Hi there, should you choose to visit the dealer regarding this concern, feel free to send our team a private message for an extra layer of support.

Diamond
Ram Cares

Thanks for reaching out, I am new to RAM. Would something like this fall under the power train warranty? 4WD system stop working? I am out of new car warranty, but maybe if this is something that might fall under powertrain I may take it to the dealer.

 

[kapinallinen2]

DTC's??? No other errors or check engine type lights. When I switch back to 2wd the Serv 4wd light resets, so no issues that I know of besides wont go into 4wd.

Something like that should store a trouble code, not necessarily turn on the check engine light.