Alpha OBD and 2018 RAM 3500 Aisin trans

[HDR]

Does anyone know if Alpha obd will work on a 2018 RAM 3500? I have a U1439 after putting 35" tires on. I took it to the dealer after they told me they can calibrate it for the tire size change. Later said they can do anything!!!!! Thanks

 

[Topzide]

YES it will! You'll need a security bypass cable to get into the ECU. This is the cable that I got for FIL truck and others have gotten as well,https://www.kaodtech.com/product-page/security-module-bypass.
AlfaOBD is Android or Windows OS only. You'll also need a way to connect to OBD on the truck. I use the MX+ Bluetooth to my phone. The MX+ also gives you a generic scanner also for you other vehicles if needed. You enjoy what Alfa will bring to the table for your truck. Just remember to save the original config file so that you'll have a starting point to return to in case of an issue. Enjoy your truck!

 

[HDR]

I've ordered everything and I hope I'll get in time to try fixing it this weekend. thanks for the info.

 

[HDR]

So today I used Alpha OBD and still get the U1439 code. Is there anything else I can try?

 

[HDR]

I got it. I used Alpha obd to change the axle ratio to 3.42. For some reason it had it saved as 3.93.