Mack TerraPro Trucks Recall Due to Engine Software Issue
Areazine synthesizes this NHTSA vehicle recall directly from NHTSA's official public data feed. See our methodology for full source attribution and refresh cadence.
Mack Trucks is recalling certain 2022-2027 TerraPro trucks because the engine control unit software may allow the engine to start when the transmission is not in Neutral, potentially increasing crash risks.
What this NHTSA vehicle recall tells you, and what most readers miss
This notice was issued by NHTSA on April 9, 2026 and geographically references United States. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Vehicle Recalls - determines the consumer-protection framework behind it, which shapes what remedies (refunds, replacements, repairs, or the recall itself) are available to affected consumers and which agency holds statutory responsibility for enforcement.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are recall, product-safety, nhtsa, Vehicle.
Recall Article
What Happened
Mack Trucks, Inc. is recalling certain 2022-2027 TerraPro trucks due to a software issue in the engine control unit that may allow the engine to start when the transmission is not in Neutral, violating Federal Motor Vehicle Safety Standard number 102.
Which Products Are Affected
The affected products are 2022-2027 Mack TerraPro (TE) trucks. The total number of units affected is 4,650. The NHTSA campaign number is 26V139000.
What You Should Do
Consumers should contact their dealers for a free software update to the engine control unit. Owner notification letters are expected to be mailed on May 8, 2026. For more information, owners may contact Mack's customer service at 1-800-866-1177, and reference Mack's recall number SC0492. Vehicle Identification Numbers involved in this recall are searchable on NHTSA.gov as of March 18, 2026.
Why This Matters
This recall is significant because starting the vehicle while in gear could cause unexpected movement, increasing the risk of a crash or injury.
Source
Information from NHTSA. Visit NHTSA.gov for more details.
Original source: NHTSA Official Notice ↗
Related Vehicle Recalls
All Vehicle Recalls →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NHTSA vehicle recall: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,170 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 9, 2026.
Frequently Asked Questions
Common questions about this NHTSA vehicle recall.