So I really needed to disable the TPMS warning light and reconfigure the truck to recognize 37" tall tires to correct the speedo and shift points. I would have been happy with the procal but its on forever backorder and although alphaobd2 looks promising, There appears to be a learning curve. I just want something that works.
I use the JL Tazer from Z-automotive for all of my jeeps and it works fantastic. no issues. So it was a no brainer for the RAM. I also like a few of the live features, like being able to disconnect the swaybar in 2wd and use the lockers in 4hi. You need to pick up the little security bypass cable too. I ordered everything directly from Z automotive and had it in two or three days.
Install is easy, and in minutes I was ready to program... and here's where I started having problems. When attempting to scroll through the menu, the stereo keeps over writting the display, meaning that you can only see what menu you are on for about 1/2 second, before it gets replaced by whatever is playing on the stereo. Powering the infotainment down doesn't work either. It just over writes with "music off". Sometimes the menu doesn't show up at all, making navigation a nightmare. After a bit of trial and error, I was able to get the Tazer married, and start changing some settings. Then restart and start the truck... every system on the truck throws a failure code... Traction control, sway bar, service 4wd, service power steering, service... service.. service. So, clear CEL's, unmarry, and remove the Tazer and everything is good again.
I sent Z-automotive an email and they were quick to respond, with a new update that had to be manually installed on the Tazer. So I updated it, and tried to reinstall. The menu overwrite problem is much better (not completely fixed, but usable) but the truck still thows just about every CEL it has. A few email back and forth, and they instructions about a very very specific sequence of events for unmarrying, uninstalling, clearing memory and reinstalling the tazer. We have gotten it to the point where I have disabled the TPMS and reprogramed the tire size, so my speedo is accurate again. But the Tazer has to be physically disconnected or it will still cause a traction control CEL.
So much for something that just works.
That being said, it is nearly working now, and Z-automotive has been very responsive and easy to work with. I'll update if we can get the live functions of the Tazer operational.
On a side note, the Tazer can support up to a 35" tire... Yes, I run 37's, but the height measured from the ground to the center of the hub is 17.5"
17.5 x 2 = 35. So the Tazer is spot on for my Nittos.