2016 t680 with a Paccar MX13 ECU issue, no software installed

2016 t680 with a Paccar MX13.
The truck is NOT deleted.

Got a Davie 4, checked the codes since both check lights came on while sitting at home for a few weeks. Cleared the codes, tried to update the software and I think I broke the truck.

PCI updated fine, 18 software's up to date. But the EAS fails to update claiming "Unable to read ECU parimiters" and than states no software installed. Return to factory settings and retrying the install both fail and it remains saying no software installed.






As a result the truck sees no def in the tank (it was at 3/4 when I got home and even added 2.5gals from Walmart to make sure it wasn't empty) and goes into maximum derate in limp home mode.

Throws out a long list of U#### errors all saying "timeout - from aftertreatment system".






Have tried toggling off and on the key to reset the computer, disconnecting the batteries for 15 mins (I flip the battery disconnect when away from the truck at home anyway so it's off for hours before doing this), restarting and reconnecting davie, retrying over and over and over. Also checked the fuses and made sure davie was plugged directly into the port and not through a Y splitter.

Anybody else have an idea of what I can try before I use Davie to disable the derate and drive it 15 miles to a kenworth shop?

 

No clue, the "disconnecting the batteries for 15 mins" was just via the battery disconnect switches to cut all power, not physically removing the cables.

 

At this point I'll try anything.

I wonder if anybody has a goat and sacrificial alter I can borrow.

 

Didn't work. Had the batteries unplugged for half an hour, redownloaded the software, tried to update the EAS and immediately got a "Failed to read ECU perimeters" error. Then return to factory settings failed as well.

 

No password except the initial login. Unfortunately doing a parameter refresh doesn't change the outcome either.

Dealer level? Guess that means as kenworth shop is the only option.