2019 WESTERN STAR 4700

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.

TIRES

Daimler Trucks North America, LLC (DTNA) is recalling certain 2012-2021 Freightliner SD 108, Freightliner SD 114, 2016-2020 Freightliner Coronado, 2013 Western Star 6900, 2013-2022 Western Star 4700, Western Star 4900, and 2022 49X vehicles. The tires and rims are not approved and rated for these vehicles from the Tire and Rim Association or tire manufacturer. 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: Unapproved tires that are not rated for the vehicle can cause tire performance issues, increasing the risk of a crash.

FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL

Daimler Trucks North America, LLC (DTNA) is recalling certain 2018-2021 Freightliner Custom Chass XC Chassis, 108SD, Custom Chass XB Chassis, Business Class M2, 114SD, and Western Star 4700 vehicles. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.

Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.

ELECTRICAL SYSTEM:WIRING

Daimler Trucks North America, LLC (DTNA) is recalling certain 2019-2021 Western Star 4700 and Western Star 5700 vehicles. The ground harness wiring may be undersized and may cause a connector to melt.

Risk: Damage to the ground harness may cause an engine stall, increasing the risk of a crash.

POWER TRAIN:CLUTCH ASSEMBLY

Daimler Trucks North America LLC (DTNA) is recalling certain 2018-2019 Freightliner Cascadia, Business Class M2, 108SD, 114SD and 122SD and Western Star 4700, 4900 and 5700 vehicles. An internal component within the clutch assembly may fail, which in certain circumstances could allow the vehicle to move unexpectedly.

Risk: Unintended vehicle movement van increase the risk of a crash.

SERVICE BRAKES, AIR:DISC:CALIPER

Daimler Trucks North America LLC (DTNA) is recalling certain 2019-2020 Freightliner 108SD, 114SD, Cascadia, Business Class M2, Western Star 4700 and 5700, Freightliner Custom Chassis S2, Custom Chassis XB, and Custom Chassis XC vehicles equipped with air disc brakes. The brake caliper mounting bolts may have been insufficiently tightened.

Risk: Loose brake caliper mounting bolts can reduce brake effectiveness, increasing the risk of a crash.

ELECTRICAL SYSTEM:WIRING

Daimler Trucks North America LLC (DTNA) is recalling certain 2019-2021 Western Star 4700 and 5700 vehicles. A particular wire in the ground harness may be undersized, possibly resulting in a melted connector in the ground circuit harness. If the connector becomes damaged, under certain circumstances, the engine may stall without the ability to restart.

Risk: An engine stall may increase the risk of a crash.

ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

Daimler Trucks North America LLC (DTNA) is recalling certain 2019 Western Star 4700 and 4900 trucks. The vehicles are accumulating distance in kilometers, but the odometer display is labeled as being miles. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 101, "Control and Displays."

Risk: The odometer failing to register the correct distance travelled could cause driver confusion, as well as possible incorrect assumptions about driver speed. An incorrect speed assumption may increase the risk of crash.

STEERING

Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2019 Freightliner 114SD, 122SD, 108SD, Cascadia and Business class M2 trucks, Freightliner Custom Chassis XBS, XCL, XCM, MT45, MT55, S2G, S2RV, XCR and XCS custom chassis and Western Star 4700, 4900 and 5700 trucks equipped with Detroit Axle axles. The affected vehicles may have loose steering and tie rod arm bolts.

Risk: Loose tie rod arm bolts may lead to separation of the tie rod arm, resulting in a loss of vehicle control, increasing the risk of a crash.

SERVICE BRAKES, AIR:DISC:CALIPER

Daimler Trucks North America, LLC (DTNA) is recalling certain 2018-2019 Freightliner 108SD, 114SD, Cascadia, Business Class M2, Freightliner Custom Chassis Corporation S2C 106 Cab, S2G Cab Chassis, XCL, XCM, XBS, XCP, XCR, Western Star 4700, 4900 and 5700 trucks. The brake caliper mounting bolts may have been insufficiently tightened.

Risk: Loose brake caliper mounting bolts can reduce brake effectiveness, increasing the risk of a crash.

POWER TRAIN:CLUTCH ASSEMBLY

Daimler Trucks North America LLC (DTNA) is recalling certain 2018-2019 Freightliner 108SD, 114SD, 122SD, Cascadia, Business Class M2, Western Star 4700, 4900, and 5700 vehicles, equipped with certain Eaton ECA heavy-duty truck clutches. An internal component in the clutch assembly may fail, possibly resulting in unintended vehicle movement.

Risk: Unintended vehicle movement can increase the risk of a crash.

TIRES:SIDEWALL

Daimler Trucks North America, LLC (DTNA) is recalling certain 2019 Freightliner 108SD, 114SD, 122SD and Business Class M2 trucks and Western Star 4700 and 4900 trucks, equipped with certain Bridgestone M854 tires with date codes 2418-2518, Bridgestone M860A tires with date code 2518, and Bridgestone M864 tires with date codes 2318-2418, all of size 425/65R22.5. The sidewall steel body cords may be exposed, which can cause unexpected, rapid air loss during use.

Risk: Rapid air loss can increase the risk of a crash.

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2019 Freightliner M2 Business Class, 108SD, 114SD and Cascadia trucks, Western Star 4700, 4900, and 5700 trucks, FCCC S2C 106 Cab, S2G Cab, XBR, XBS, XCL, XCM, XCP, XCR, and XCS chassis equipped with air disc brakes. The brake caliper mounting bolts on these vehicles may be insufficiently tightened, allowing the bolts to loosen.

Risk: If the brake caliper mounting bolts loosen, braking performance may be reduced, increasing the risk of a crash.