Digital speedometer not matching with gage speedometer

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Nikolaus Huebner

Junior Member
Joined
Jul 1, 2019
Posts
2
Reaction score
0
Location
Burnsville mn
Ram Year
2014
Engine
EcoDiesel
my 2014 EcoDiesel bighorn has an issue with the speedometer. The digital/cruise control doesn’t match up with the gage. The two are off by one mph. Is the issue in the electronics or calibration?
 

AxleFolly

Junior Member
Joined
May 6, 2024
Posts
4
Reaction score
0
Location
Seattle
Ram Year
2014
Engine
Hemi 6.4
Me too! I just discovered this issue today in the 2014 3500 Laramie Megacab 6.4L Hemi 4.10 with 98k that I've owned for just a few days -- except the difference in my speedometers is even bigger. I had been relying upon the dial, but just realized it's reading about 10% low as one of those "Your Speed" signs telling me I was speeding prompted me to switch the MPG display I was running to the digital speedometer.

The digital speedometer matched the "Your Speed" sign; my dial is reading at least 10% low (so I'm really traveling at 34mph when I'm holding the peg at 30mph).

The truck was manufactured for Canada then after a year immigrated and was naturalized and went through the U.S. conversion process. I'm guessing the thing has been wrong since the instrument cluster got changed but the previous United States owner wasn't bothered enough to change it.

If it's not too much, I'd like to get it dialed-in, but I don't want to screw up the digital one that reads correct (and which I assume is associated with the digital odometer).

What's the fix?
 
Top