2015 VOLVO VNL

SUSPENSION:FRONT

Volvo Trucks North America (Volvo Trucks) is recalling certain 2015 VNL vehicles equipped with Meritor FF967 Non-Drive Front Steer axles. The axles missed the heat treating operation during manufacturing, reducing their strength and possibly causing the axle beams to fracture.

Risk: Fracture of the axle beam can cause a loss of vehicle control, increasing the risk of a crash.

SERVICE BRAKES, AIR

Volvo Trucks North America (Volvo) is recalling certain model year 2013-2017 VNL and VNM trucks and certain model year 2017 VNX trucks. In the affected vehicles, incorrect software for controlling the electronic air dryer may result in oil and water contaminating the brake system.

Risk: If the brake system becomes contaminated, braking performance could be affected, increasing the risk of a crash.

PARKING BRAKE:DRIVELINE:HYDRAULIC:ACTUATOR

Volvo Trucks North America (Volvo) is recalling certain model year 2015 and 2016 VNX and VNL trucks manufactured from May 20, 2014, through March 6, 2015, equipped with certain Haldex Life Seal Type 30/30 Long Stroke Air Brake Actuators manufactured January 9, 2014, to October 28, 2014. The affected actuators may have an incomplete attachment of the internal rubber diaphragm to the actuation mechanism of the parking brake section of the Life Seal actuator.

Risk: If the diaphragm is not completely attached, there may be internal leakage from the service section past the diaphragm, potentially trapping air pressure in the parking brake section. This air pressure in turn, if not vented, may prevent full release of the actuator unit, and may induce brake drag and may result in overheated wheelend service brakes, increasing the risk of a fire.

SERVICE BRAKES

Volvo Trucks North America (Volvo) is recalling certain model year 2012-2015 VNL and VNM trucks manufactured May 31, 2011, to December 1, 2014. In the affected trucks, the trailer hand brake handle may not to return to the off position due to being restricted by the cut out in the trim panel.

Risk: If the brake handle does return to the off position, the trailer service brakes may drag causing the wheel end to overheat and potentially cause a wheel end fire or tire blowout. Either condition increases the risk of a crash.

ELECTRICAL SYSTEM:SOFTWARE

Volvo Trucks North America (Volvo) is recalling certain model year 2015 VNL and VNX trucks manufactured January 7, 2014, to June 5, 2014, and equipped with a D16 engine. Due to the engine control unit having an incorrect parameter setting in the software, the engine may stall.

Risk: An engine stall while driving increases the risk of a crash.

ENGINE AND ENGINE COOLING:ENGINE

Volvo Trucks North America (Volvo) is recalling certain model year 2013-2015 VNL trucks, and 2013-2014 VNM trucks equipped with certain Cummins Westport Model ISL G and ISX12 G engines. Condensation in the intake manifold may freeze during cold weather conditions and interfere with the proper operation of the intake manifold pressure sensor.

Risk: The improper operation of the sensor could induce elevated exhaust temperatures or flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury to a person near the exhaust pipe.

POWER TRAIN:AUTOMATIC TRANSMISSION

Volvo Trucks North America (Volvo) is recalling certain model year 2012, 2014-2015 VHD, 2012-2015 VNL, and 2014-2015 VNM trucks manufactured June 16, 2011, to August 18, 2014, and equipped with the Eco-Roll option. The affected trucks may fail to re-engage the vehicle drivetrain after using the Eco-Roll feature.

Risk: If the drivetrain does not re-engage, the vehicle's stopping distance may be lengthened, increasing the risk of a crash.

SERVICE BRAKES, AIR:DISC:CALIPER

Volvo Trucks North America (Volvo) is recalling certain model year 2014-2015 VAH, VNL, and VNM trucks manufactured March 4, 2013, to April 28, 2014. Due to the bolts holding the disc brake caliper to the backing plate not being tightened to the specified torque, the disc brake caliper may detach from the backing plate.

Risk: If the disc brake caliper detaches from the backing plate it can affect the brakes to that particular wheel causing the vehicle to "pull" to the left or right, increasing the risk of a crash.