After a decel to 20ish mph, the automated manual transmission attempted to shift into gear to begin acceleration. The transmission made load noises indicating a failure followed by a transmission warning with the fault code being 617 FMI 14. All acceleration and engine braking ability was disabled, increasing the risk of an accident due to the vehicle being disabled. A similar safety recall for the same vehicle would be NHTSA #24V-190 which causes the vehicle to become disabled and increase a crash risk. This is a known issue caused by compressed air contamination according to Eaton Transmissions service bulletin TAIB-1006, which was first published April 2023. In the over 3 years since the service bulletin was released, Eaton, Peterbilt, Paccar, and Cummins(engine manufacturers) have failed to develop adjusted maintenance intervals, added inspections, or additional filtration to prevent contamination of the transmissions air system. They've instead passed the financial burden of repair on the customers by denying warranties. The dealer determined based on TAIB-1006 that the MTM requires replacement and the air system cleaned of contamination. This was based on data and not a detailed inspection to determine the internal failure.

Source: NHTSA complaint ODI #11737845 · view all complaints for this vehicle at nhtsa.gov

The contact owns a 2022 Peterbilt 579. The vehicle was previously repaired under NHTSA Campaign Number: 24V915000 (SERVICE BRAKES, HYDRAULIC, ELECTRICAL SYSTEM); however, the vehicle experienced the failure listed in the recall after the recall repair. The contact stated that while driving 22 MPH, the brakes failed to activate. There was no warning light illuminated. The vehicle was taken to a dealer to be diagnosed, and the contact was informed that the failure with the brakes was caused by a loss of communication between the ECM and the ECU. The contact was informed that the ECU was not installed on the vehicle, and the lane mitigation system was found unplugged. The vehicle was not repaired. The manufacturer was notified of the failure; however, the manufacturer refused to help due to how the vehicle was manufactured. The contact stated that the vehicle was manufactured improperly with salvaged parts and stated that the serial number for the engine was not a match for the original engine. The failure mileage was 526,000.

Source: NHTSA complaint ODI #11761348 · view all complaints for this vehicle at nhtsa.gov

I WOULD LIKE TO TALK TO YOU ABOUT MY TRUCK ISSUE . I BOUGHT THE TRUCK PETERBILT 579 2022 FROM GOLDEN STATE PETERBILT FRESNO CA ON 03/03/2021. WHEN I DROVE THE TRUCK I REALIZED IT WAS PULLING TO THE RIGHT. I IMMEDIATELY INFORMED THE DEALERSHIP ABOUT THIS ISSUE. I DROVE THE TRUCK ABOUT 200 MILES TO MAKE SURE THERE WAS SOMETHING WRONG WITH THE TRUCK, SO I LEFT THE TRUCK AT THE DEALERSHIP ON 03/04/21 TO FIX IT. THE COMPANY HAS CLAIMED TO HAVE REPAIRED THE TRUCK THREE TIMES SINCE THEN BUT THE TRUCK HAS NOT BEEN REPAIRED. THE TRUCK STILL PULLS TO THE RIGHT AND IS NOT SAFE TO DRIVE ON THE ROAD .AFTER ABOUT 21 DAYS, THE COMPANY HAS NOT BEEN ABLE TO FIX THE TRUCK OR FIND A SOLUTION TO THE PROBLEM. THIS BEHAVIOR OF THE COMPANY IS CAUSING ME HUGE LOSSES IN MY BUSINESS.MY BROTHER DROVE ANOTHER DEALERSHIP ANOTHER BRAND NEW TRUCK WHICH IS PULL RIGHT SIDE AS WELL BUT NOT LIKE MY TRUCK . FOREMAN TOLD ME THIS PROBLEMS COMING IN TOO MANY TRUCKS. CAN YOU TAKE ACTION AGAINST MANUFACTURING COMPANY BECAUSE THEY ARE MAKING TRUCK WITCH'S NOT GOOD FOR ROAD SAFETY ? THANK YOU VERY MUCH

Source: NHTSA complaint ODI #11404394 · view all complaints for this vehicle at nhtsa.gov