The FMCSA, which issued the report earlier this month after being alerted by Volvo Trucks, said the critical safety defect — a faulty two-piece steering shaft — could have a severe impact on the safe operation of units, even leading to a separation of the steering shaft without warning and an immediate loss of steering ability and control.

The root cause of the problem, the pulling loose of the upper connection, has not yet been found.

Certain 2016 and 2017 Volvo and Mack Titan model trucks may be affected by the recall. If a potentially affected vehicle is identified, Volvo advises fleet operators or owners to contact the Volvo Customer Support line at 1-877-800-4945 (Option 1) to determine what, if any, action is necessary.

“Volvo has received no reports of personal injury as a result of this condition,” FMCSA officials said in the notice. “Therefore, Volvo considers this as a proactive measure to protect the public and Volvo’s customers from the potential risk associated with this defect.”

Dealers were notified on March 10, and letters to owners were sent by mail on March 16. For more information on the recall, the remedy program and the component being issued as a replacement, see the full alert here.