Overloaded Electrical System May Cause Fire

Affected vehicles (4)

Component / system

Defect

Marion Body Works Inc. (Marion) is recalling certain 2020-2022 Pumper, Rescue, Aerial, and RPM vehicles equipped with Weldon 8X16 Input-Output nodes. In the event of a short circuit or wiring failure, the firmware in the node may fail to shut off the output pin, resulting in overloaded electrical circuits.

Risk / consequence

Overloaded electrical circuits can overheat, increasing the risk of fire.

Remedy

Maron will work with the equipment manufacturer Weldon to update the firmware, free of charge. Owner notification letters were mailed January 26, 2024. Owners may contact Marion Body Works customer service at 1-715-754-5261.

Chronology of events

1. October 2023

   In early October 2023, Weldon was notified that external wiring in a vehicle using the node had melted. The part was returned to Weldon for analysis in mid-October where it was found that when an external short circuit occurred, the electrical output did not shut down as specified. Weldon conducted testing and analysis of the version of the node used in the vehicle as well as prior versions of the node and it was found that for the version of the node installed in the vehicle, the electrical current sensing calibration was outside the specified limits. Weldon found that the calibration was previously updated in production, but was not considered to pose a broader concern at the time. On October 24, 2023, Weldon decided to conduct a safety recall to address. October 24, 2023: Weldon Submits NHTSA Safety Recall 23E-084 January 16, 2024: Marion Body Works is notified of the component recall and reached out to Weldon to obtain the SN's affected to cross reference and identify the affected population. January 19, 2024: Marion Body Works submits NHTSA Safety Recall for 23E-084.

Notification schedule

Dealer notification

JAN 26, 2024 - JAN 26, 2024

Owner notification

JAN 26, 2024 - JAN 26, 2024