2026 Mack Terrapro (te)

Routine

No owner complaints are on file for this vehicle. It has been recalled 1 time.

1 safety recall

Part 573 reports

Engine and Engine Cooling › Engine › Engine Control Module (ecu/Ecm) › Software26V139000

Filed Mar 11, 2026775 vehiclesMack Trucks, Inc.

Defect. Mack Trucks, Inc. (Mack) is recalling certain 2022-2027 TerraPro trucks. The engine control unit (ECU) software may allow the engine to start when the transmission is not in Neutral. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 102, "Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect."

Risk. Starting the vehicle while in gear may cause unexpected vehicle movement, increasing the risk of a crash or injury.

Remedy. Dealers will update the ECU software, free of charge. Owner notification letters were mailed April 14, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0492. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov March 18, 2026.

Across model years

Worst on record: 2027

Year	Recalls	Assessment
2027	1	Routine
2026 — this page	1	Routine
2025	4	Routine
2024	7	Routine
2023	4	Routine
2022	5	Routine
2021	2	Routine
2020	2	Routine
2019	1	Routine

Compare every Terrapro (te) year →

Other Mack models

All Mack models →

Mack 16 Anthem (an) 11 Granite (gr) 9 CXU612 7 GU 6 CH 6 Cxu 5 CH600 5 CV 4 CL 4

Reading this record

No unusual pattern of severe incidents in the complaint record.

Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.

Recall repairs are free for as long as the recall stands. Check whether a specific car still has open work at NHTSA's VIN lookup.

Most recent recall on file: Mar 11, 2026. Source: NHTSA Office of Defects Investigation.