I broke it.
Went to write a TCM tune & didn't realize my laptop was running near 10% margin of battery.
I started the TCM write, walked away to grab a tool and when I came back to the Jeep, the laptop was in standby. *crap*
Now I have rapid endless chimes with key on and dash displays HOTOIL.
VCM Editor will no longer read the TCM, with a "failed" message, also x35 unlock message. Won't write either - says unlicensed vehicle.
Using the handy HPT scanner, I pulled the DTCs and got this ominous message:
"0x7E8: U0101 - Lost Communication with TCM (Permanent)"
Took it down our street, its in limp mode for sure, 2nd gear only and endless chimes.
Any help is most appreciated.