at about 25-35 mph in high gear, push tow haul button if it does go away its the noise activation issues. Let me know

 

Active noise canceling, when it all goes electric we can look forward to fake exhaust notes for several years.

 

Actually its going into 4cyl mode there is 0 fix.

 

MDS system (going into 4cylinder mode) using the gear limiter or tow/haul mode should prevent it.

 

Guys, I’ve watched for the ECO light to be on when it occurs, will give the gear limiter/tow haul mode a try. Thanks!!!

 

My 2020 Ram Sport Night edition has a drone when cold if I do not turn off the MDS. I use the tow/haul mode when cold and no drone, when I don't and it goes down to 4 cylinders it makes a drone sound...

 

So I’ve tried your suggestions with no luck, this morning during cold start it was doing it. Currently it’s back at the dealer, they’ve heard it again and have submitted a TSB, I did ask about the ECO mode, they didn’t think it was the same thing

 

I had the droning in my 2019 rebel, would be more prominent when eco mode came on, after listening closely it seemed to be coming from the speakers. Mentioned it to the dealer on next service and they flashed the active noise cancellation module and fixed it right up.

 

This flash cured my '19 bighorn

 

Thanks for the responses guys, sounds like they may have narrowed it down to the noise cancelling system, fingers crossed that’s it.

 

Good for you !

 

Confirmed that’s what the noise is, however a reflash did not fix, so waiting on an update from Dodge, apparently they’re well aware of it. Then to add insult to injury, air bag light came on today, it goes out after about 20sec however it’s annoying as hell, truck only has 6000km on it

 

Ugh sorry man, wish I had more ideas for you.

 

I have a brand new, well seven month old RAM 3500 Longhorn with 3825km on the speedo and that EXACT problem, dealerships (2) can not fix it plus they never heard of the problem, I did some research and was told it is the same problem you described to Denton.
The dealerships have both called the DSM and TechLine and were told there is no fix at this time. No one has offered to reflash the ANC module...FCA has been no help at all, eight calls later and all I have is a case #82664785, all those people The last guy I spoke to said he would sign me up for the vehicle buy back program but would not guarantee it would help, I told him I wanted my truck fixed not bought back, then he told me he could not help me, he was such a dope. Anyway on Tuesday I am going to go to my Purchasing Dealer and tell them to hook up the mikes and reflash the module with whatever their latest software is and see if it makes any difference, this has been going on for seven months!! All I want is my truck fixed. My drone gets so loud you can't talk to the person sitting beside you!! If you disable the microphones in the cab the noise will go away, u do have a Harmon Kardon sound system in your vehicle right? If it is an Alpine then this is not your problem. Harmon Kardon has a noise cancelling system incorporated into the stereo that is supposed to make the interior absolutely quiet, if it works!