Recent content by lmftmf

I had to use both. I changed the tire size using Alfa and then performed a proxi alignment with a dealer sanctioned witech tool.

As far as I can tell. I used my autoauth on a MK900-BTt autel scan tool and alfa obd with obd link MX adapter. Unlocked gateway using autel then with obdlink pod hooked up to splitter made the dynamic tire size change from 2480 to 2700. Truck was pissed off. Hooked up MDP using dealer witech...

Mission was a success boys. 25 DT 35 inch tires changed tire size using a 21 WL model in Alfa and Autel scantool to unlock SGW. Afterwards I performed the proxy alignment and all is good! Did have to reset the bcm to get configuration mismatch codes to go away.

The main issue I'm having is when I connect with Alfa and witech as soon as I try to start the procedure the truck locks the SGW and I have to pull the MDP and restart. For some reason I was able to at least make the change on the grand cherokee L that I tried but The trucks kick me out for some...

In progress today the 25 DT showed back up.

Going to be attempting tire size change again today on a 25DT. After I complete the BCM edit I will proceed to flashing the modules that fail proxy alignment. Any update on your end @Jimmy07 ?

@Jimmy07

So I was using the wrong section in AlfaOBD. I had to go in with a Jeep WL to get the change to work successfully. I was able to change the tire size but multiple modules fail when performing the proxi alignment afterwards. I'm going to try and make the tire size change and then flash the...

I ordered the Xtool adapter it will be here tomorrow. Will post with findings.

What year model? This was on a 25DT and a 22WS

I have an Autel scan tool with autoauth subscription. It looks like the same thing is happening. I'll try again on this Wagoneer that I have this morning.

I tried this method this morning, as soon as you try to connect to the truck with alfaobd the SGW locks out. I can see in witech with the MX link connected all the module go red and even the MDP can no longer talk to the truck.

I will report my findings, at least if it is successful you can go to your local dealer and offer a tech lunch to help out. :)

@Jimmy07 I've ordered the splitter, going to try this tomorrow using my MDP+ and see if we are able to get it done with Alfaobd. I will report my findings.

Greetings @Jimmy07 I work at an FCA dealer and I'm curious if I could be of assistance with your project? Would it be possible using this method and an official MDP with witech subscription to make the proxy alignment after the changes? Our dealer is trying to bypass the tire size...