NHTSA Recall 15V139000: Fifth wheel assembly (trailer hitches)
Mack Trucks, Inc. reported this safety recall to NHTSA on , covering an estimated 262 vehicles. It affects 2012–2015 Mack Pinnacle (cxu).
| NHTSA campaign | 15V139000 |
|---|---|
| Manufacturer campaign | SC0390 |
| Component | TRAILER HITCHES › FIFTH WHEEL ASSEMBLY |
| Report received | March 11, 2015 |
| Owner notification | May 6, 2015 |
| Initiated by | Manufacturer |
Defect
Mack Trucks, Inc (Mack) is recalling certain model year 2012-2015 CXU trucks manufactured February 4, 2011, to December 23, 2014, and equipped with an air release fifth wheel latch. The affected vehicles have a switch to release the fifth wheel latch that may invertently be pushed and cause the trailer to unintentionally disconnect from the tractor after the parking brake has been released.
Safety risk
An inadvertent decoupling of the trailer from the tractor may increase the risk of a crash.
Remedy
Mack will notify owners, and dealers will install a secondary action that operators will need to activate before the fifth wheel will release, free of charge. The recall began on May 6, 2015. Owners may contact Mack customer service at 1-800-528-6586. Mack's number for this recall is SC0390.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Vehicles covered by recall 15V139000
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.