Kalmar has filed a recall with the US National Highway Traffic Safety Administration (NHTSA) covering three configurations of its Ottawa T2 terminal tractor, after identifying a potential electrical safety fault that has, in very rare cases, produced thermal events.

The notice, lodged on 5 October, covers the Ottawa T2 4×2 DOT/EPA, the Ottawa T2 Off Road and the Ottawa T2 6×4 DOT/EPA configurations — workhorse units used to move containers and cargo within port and logistics facilities worldwide.

What is the defect?

According to Kalmar, the power distribution board inside the cabin may suffer a breakdown in electrical insulation resistance. The component may also be vulnerable to a short circuit.

In a small number of cases, the fault has resulted in thermal events. Kalmar stressed the affected units represent less than 0.001% of the total Ottawa T2 fleet — an extremely low incidence rate, but one the manufacturer has decided not to leave unaddressed.

The stakes for terminal operators are straightforward: a tractor that develops an electrical fault inside a cab, on a live container yard, carries fire risk near high-value cargo and adjacent equipment. Even a handful of thermal events is enough to trigger a formal recall when the exposure sits in the middle of dense port operations.

How will Kalmar fix the affected units?

The remedy is a hardware modification rather than a software patch. Kalmar will add a remote ground stud, including a fuse, to isolate certain electrical circuits and prevent thermal events from occurring.

Kalmar said it will contact affected customers directly in the coming weeks with details of the required modification. Its service teams will then coordinate the work with customers to minimise the time terminal tractors spend out of service — a critical point for operators, where every tractor stood down is capacity lost from the container-handling fleet.

"Customer safety and the reliability of their operations are of utmost importance to us," said Thor Brenden, President, Terminal Tractors, Kalmar. "We are taking direct action to reach affected owners, provide clear guidance and complete the necessary work."

Brenden added that Kalmar will work with customers and its service network throughout the process to help keep Ottawa T2 fleets operational.

What does this mean for terminal operators?

For ports and logistics facilities running Ottawa T2 units, the practical consequence is a scheduled maintenance window rather than a fleet stand-down. Because the affected population is less than 0.001% of the total fleet, the modification programme should touch only a small number of machines at any given site.

Operators should nonetheless expect direct outreach from Kalmar in the coming weeks and factor brief downtime into yard planning when the ground stud and fuse retrofit is carried out.

The Ottawa T2 sits at the core of container movement between quay and stack, and Kalmar has supplied terminal tractors alongside other container-handling equipment to operators around the world. With the recall now on file with NHTSA and remediation coordinated through Kalmar's service network, the disruption to container flows at affected terminals should prove minimal, provided operators respond promptly to the manufacturer's contact and schedule the modification early.