Trailer hitches: fifth wheel assemblyRecall 15V-644 · Mack vehicles
Mack Trucks, Inc. recall 15V-644 covers 448 Mack vehicles for a trailer hitches: fifth wheel assembly problem, reported to NHTSA on October 13, 2015. The manufacturer's latest report (2017 Q1) shows 22% of affected vehicles repaired.
Source: NHTSA recall 15V644000 and manufacturer quarterly reports. Started by an NHTSA defect investigation.
The problem
Mack Trucks, Inc. (Mack) is recalling certain model year 2011-2014 Pinnacle (CHU and CXU) trucks manufactured September 10, 2010, to June 17, 2013. The affected trucks are equipped with Fontaine Ultra LT Fifth Wheel connectors, which, due to cumulative damage to the fifth wheel and its locking mechanism, have a locking mechanism that may fail to operate or to properly engage.
The risk
If the fifth wheel and locking mechanism are sufficiently damaged, the locking mechanism may fail to operate as intended and the trailer may unexpectedly detach from the tractor, increasing the risk of a crash.
The fix
Mack will notify owners, and Fontaine dealers will replace the fifth wheel with an Ultra NT model fifth wheel, free of charge. The recall began on November 18, 2015. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0395.
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.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
22%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.
Vehicles in this recall
Built from September 20, 2010 to June 17, 2013. Not every vehicle in these model years is included; check by VIN.
The investigation behind this recall
- 5th Wheel malfunctionNHTSA