WESTERN STAR 4700

STEERING:LINKAGES:TIE ROD ASSEMBLY

Daimler Trucks North America, LLC (DTNA) is recalling certain 2022 FCCC Shuttle Chassis, 2022-2023 FCCC RV Chassis, FCCC Van Chassis, Van Chassis Gas, 2023 Freightliner Cascadia, Freightliner Business Class M2, Thomas Built Bus School Bus Chassis, Western Star 4700, Western Star 47X, Western Star 4900, and Western Star 49X commercial buses. The tie rod may be missing a fastener, allowing the steer arm to detach.

Risk: A detached steering arm can result in a sudden loss of steering control, increasing the risk of a crash.

ELECTRONIC STABILITY CONTROL (ESC)

Daimler Trucks North America, LLC (DTNA) is recalling certain short wheelbase 2020-2024 Freightliner Cascadia, 2021-2024 Freightliner M2 Business Class, 2022 Western Star 4700, and 2020 Freightliner Classic Cascadia vehicles. The vehicle is equipped with an electronic stability control system and tire combination that may understeer during a J-turn. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 136, "Electronic Stability Control Systems on Heavy Vehicles."

Risk: Understeering during a J-turn may increase the risk of a crash.

SEAT BELTS:CRITICAL FASTENERS

Daimler Trucks North America, LLC (DTNA) is recalling certain 2022 Western Star 4900 and 4700 vehicles. The seat belts may not be secured properly.

Risk: Improperly secured seat belts may not adequately restrain an occupant in a crash, increasing the risk of injury.

WHEELS:RIM

Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2023 Freightliner 114SD, 2023 Freightliner 122SD, 2020 Western Star 4700, 2019-2022 Western Star 4900, 2019-2023 Freightliner Business Class M2, and 2021 Freightliner Cascadia vehicles. The vehicles are equipped with tires that are not compatible with their 8.25-inch rims. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 120, "Wheels and Rims-Other Than Passenger Cars."

Risk: Driving with tires that are not compatible with their rims can reduce tire performance, increasing the risk of a crash.

STEERING:LINKAGES:TIE ROD ASSEMBLY

Daimler Trucks North America, LLC (DTNA) is recalling certain 2022-2023 Western Star 4700 and 2023 Western Star 4900, 49X, 6900, and Freightliner 114SD vehicles. The tie rod clamps may have been improperly heat-treated, causing them to crack and allowing the tie rods to separate.

Risk: Tie rod separation can result in a sudden loss of steering, increasing the risk of a crash.

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

Daimler Trucks North America, LLC (DTNA) is recalling 2021 Western Star 4700 and 5700, Freightliner Business Class M2, Cascadia, and Custom Chassis XC Chassis vehicles manufactured with a certain steering arm configuration with air disc brakes identified by the axle assembly supplier. On certain vehicles, one of the six brake caliper mounting bolts on the driver side steer axle may have been incorrectly tightened.

Risk: The loose bolt could result in the other caliper bolts to loosen. Insufficiently tightened bolts may not provide adequate clamping force between the brake caliper and brake anchor plate, resulting in reduced brake effectiveness, increasing the risk of a crash.

ELECTRICAL SYSTEM:WIRING

Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2019 Western Star 4700, 4900, 5700, and 6900 trucks. The affected trucks have a power stud that passes through the bulkhead. In certain circumstances, the power stud may contact the bulkhead and result in an electrical arc.

Risk: An electrical arc can increase the risk of a fire.

STEERING:LINKAGES:TIE ROD ASSEMBLY

Daimler Trucks North America, LLC (DTNA) is recalling certain 2021-2022 Freightliner 114SD, 122SD, Business Class M2, Cascadia, 108SD, Western Star 4900, 4700, 5700, Custom Chass RV Chassis, Custom Chass S2 Chassis, Custom Chass XC Chassis, Custom Chass XB Chassis, and Custom Chass MT Chassis. The tie rod clamps may be loose, which could result in loose tie rod ends that could break or detach.

Risk: Detached or broken tie rod ends can result in steering loss, increasing the risk of a crash.

STEERING:CRITICAL FASTENERS

Daimler Trucks North America, LLC (DTNA) is recalling certain 2021-2022 Freightliner Cascadia, Business Class M2, 114SD, 108SD, 122SD, Custom Chass S2 Chassis, Custom Chass XB Chassis, Custom Chass XC Chassis, and Custom Chass MT Chassis Western Star 4700, 4900, 5700 vehicles. The steering arm and tie rod bolts may have a defective seam that can fracture.

Risk: A fractured bolt may cause a loss of steering, increasing the risk of a crash.

ELECTRICAL SYSTEM

The contact owns a 2024 Western Star 4700. The contact received notification of NHTSA Campaign Number: 25V326000 (Electrical System); however, the part to do the repair was unavailable. The dealer was contacted and informed the contact that the recall parts were not available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. The failure mileage was unknown.

STEERING

Western Star utilizes relay in master power distribution, they call PNDB. When this device is faulty it interrupts the power to engine causing truck engine to shut down. This shut down has happened with the truck fully loaded (71,000 LBS) traveling at 60 mph a couple of times. With no engine power you lose power steering. This is a very dangerous condition that I have discovered is more common than it should be. Talk to any Western Star service department. The Service Department knew exactly what the problem was and related to me this is common.

ENGINE

Western Star utilizes relay in master power distribution, they call PNDB. When this device is faulty it interrupts the power to engine causing truck engine to shut down. This shut down has happened with the truck fully loaded (71,000 LBS) traveling at 60 mph a couple of times. With no engine power you lose power steering. This is a very dangerous condition that I have discovered is more common than it should be. Talk to any Western Star service department. The Service Department knew exactly what the problem was and related to me this is common.