Service Required messages and Warning Light after battery died whilst using AlfaOBD tool

[David Oakes]

I had a 60 gallon S&B tank added to my 2019 RAM 3500 but I can’t get the body computer to add it. I have the OBD Link MX+ with the security bypass cable and the android tablet. I can link to the MX+ but not the truck body computer. Have no idea what I am doing wrong. Anybody have any ideas? The gas gauge does work but want to DTE to be closer to actual.

I know this is old, but did you get this sorted out?

I had an s&b 60 gallon in my 22 ram 3500 and found the best setting to be 193 litres. This is equivalent to 51 gallons and is the maximum that the oem fuel pump/level float assembly can recognize. This will mean that there is a period after filling that the gauge will always read full until you use the first 9 gallons of fuel. But after that, the dte and fuel gauge will be spot on until empty. I know this for a fact due to actually running my tank down to 2.5 gallons left while successfully trying to avoid the bio fuel in Minnesota.

Of course, don't have the issue anymore as I upgraded to a 24 3500 dually with 50 gallon tank and titan fuels' travel trekker 50 gallon aux tank.