The parent company to truck makers, Paccar, is recalling certain model year 2014 Kenworth T170, T270, T370, T470, T660, T680, T800, T880, and W900 trucks manufactured May 6, 2013 through May 17, 2013 along with model year 2014 Peterbilt 330, 337, 348, 365, 367, 382, 384, 386, 388, 389, 389K, 567, 579 and 587 trucks manufactured May 1, 2013 through May 17, 2013.

A National Highway Traffic Safety Administration notice says an internal defect in the ignition switch causes the starter to engage when a key is partially inserted before the key is turned, and could cause injury to a person working in the engine compartment.

Vehicles with standard transmissions may experience unexpected movement, which may result in personal injury or a crash.

Paccar is notifying owners, and dealers will replace affected ignition switches, free of charge.

Owners may contact Kenworth at 1-425-828-5000 or Peterbilt at 1-940-591-4000. Kenworth's recall campaign number is 13KWF. Peterbilt's recall campaign number is 0513-E.

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236.