2015 Mack Cxu Recall

On certain vehicles, the cap nut that retains the interaxle driveshaft yoke to the rear axle input shaft may prematurely loosen. If the nut were to loosen and come off, the yoke could separate from the axle input shaft and cause the drive shaft to disconnect. A disconnected drive shaft would result in a loss of motive power, and create a road hazard, both of which could increase the risk of a crash causing injury and/or damage to property. Correction: Dealers will inspect the torque on the cap nut, and the nut will be replaced if the torque is found under specification. Note: This is an expansion of recall 2016-079.

A failure of this component (powertrain) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles, the cap nut that retains the interaxle driveshaft yoke to the rear axle input shaft may prematurely loosen. If the nut were to loosen and come off, the yoke could separate from the axle input shaft and cause the drive shaft to disconnect. A disconnected drive shaft would result in a loss of motive power, and create a road hazard, both of which could increase the risk of a crash causing injury and/or damage to property. Correction: Dealers will replace the cap nut, and inspect the threads on the input shaft. If the threads are damaged, the input shaft will be replaced.

A failure of this component (powertrain) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles, The chassis electrical harness and air brake lines may not have been properly secured at the crossmember. This could cause the electrical cables and air lines to fall down and get twisted in the driveline. This could affect safety systems such as brakes, increasing stopping distances or causing unintended parking brake application. This could increase the risk of a crash causing injury and/or damage to property. Correction: Dealers will inspect and repair the vehicle as needed.

A failure of this component (brakes) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles, brake chamber diaphragm(s) may not be properly seated. This could lead to brake drag, causing brake overheating or unintended spring brake application. These issues could increase the risk of a crash causing injury and/or property damage. Correction: Dealers will replace the brake chambers.

A failure of this component (brakes) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles, the fifth wheel remote unlocking switch may not work as designed. As a result, the driver may inadvertently release the 5th wheel latch when the park brake is applied if he/she presses or bumps the switch. This could cause the trailer to decouple from the truck increasing the risk of injury and/or damage to property. Correction: Dealers will add a redundant measure such as an additional switch or adding a thumb lock that requires 2 actions to push the switch.

A failure of this component (accessories) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Certain vehicles fail to comply with the requirements of Canada Motor Vehicle Safety Standard 121 - Air Brake Systems. These vehicles were built with insufficient air tank reserve capacity, which may provide an insufficient air supply to properly operate the brakes during repetitive brake applications. This may result in reduced braking performance which could result in a vehicle crash. Correction: Dealers will install a bigger air tank to increase air reservoir capacity.

A failure of this component (brakes) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain model vehicles outfitted with an Automatic Over-Speed Protection system, the system may be incorrectly wired. This presents a potential risk as the operator may not be able to control an unintended increase in the engine RPM if combustible vapors enter through the air intake. If this occurs, it could increase the risk of an engine fire that may cause injury and/or property damage. Correction: Dealers will inspect and repair accordingly.

A failure of this component (electrical) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles, the collars that prevent the ball sockets from backing out of the tie rod may have been incorrectly positioned. If the ball socket(s) became loose, a complete loss of steering or loss of steering at one wheel end could occur, which could increase the risk of a crash causing injury and/or damage to property. Correction: Dealers will inspect, and if necessary, reposition the collar.

A failure of this component (suspension) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain model vehicles, water around the windshield can migrate into the Electronic Power Distribution Module and contaminate it. As a result, circuits may be bridged creating an electrical short. This could potentially result in a fire, increasing the risk of injury and/or damage to property. Correction: Dealers will inspect the module, and if found contaminated, will replace it. Additional measures will be taken to address the leak if contamination is found. Note: This is an expansion of recall 2014-053.

A failure of this component (electrical) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles, bolts securing the seat belts to the seat frame, cab wall and cab floor may have been insufficiently tightened during vehicle assembly. As a result, bolts could loosen over time and potentially allow the seat belt to detach from its mounting points. If this occurs, the seat belt may fail to restrain the seat occupant in a crash, increasing the risk of injury and/or damage to property. Correction: Dealers will tighten the affected bolts to the specified torque.

A failure of this component (seats and restraints) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

Certain vehicles may not comply with the requirements of Canada Motor Vehicle Safety Standard 108 - Lighting System and Retroreflective Devices. Conspicuity tape applied to the back of the cab may be obscured by exhaust system components to a greater degree than what is allowed by the standard. This could reduce vehicle conspicuity during hours of darkness, potentially increasing the risk of a crash causing injury and/or damage to property. Correction: Dealers will add reflectors if necessary.

A failure of this component (lights and instruments) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles, the air brake supply tank pressure release valve may not have been installed at time of assembly. This could allow brake system pressure to rise above allowable limits, potentially causing the air tank to rupture. This could cause a loss of air brake system pressure, resulting in an eventual loss of service brake function and an unintended application of the emergency brakes, and could pose a risk of injury to bystanders due to flying debris. Correction: Dealers will install a pressure release valve in the supply tank.

A failure of this component (brakes) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles equipped with Cummins compressed natural gas engines, incorrect engine ECU programming could cause the exhaust system temperature to become elevated during cold weather operation. This could also cause flames to be emitted from the exhaust. As a result, nearby combustible material could be ignited, increasing the risk of a fire, injury and/or damage to property. Correction: Authorized Cummins service facilities will update software programming.

A failure of this component (engine) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).