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 read it as a data point about the issuing system: how quickly NHTSA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action, a single localized NHTSA vehicle recall is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.
For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (recall, product-safety, nhtsa, Vehicle) map to related alerts in the same area of risk - browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.
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 ↗
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Common questions about this NHTSA vehicle recall.