Model yearDo not drive

2021 Western Star 49X

Body and fuel not decoded. Owner complaints on file from no date to no date.

Recall campaigns covering this model year13531k vehicles or units across those campaigns
Owner complaints0Not enough peers on file
Severity indexNoneCrash, fire, injury or death per 100
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2021 Western Star 49X by year filed

Owner complaints about this model year, by the year they were filed with NHTSA.

No campaigns match these filters.Reset filters
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

Complaints by component

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

No campaigns match these filters.Reset filters
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

13 recall campaigns cover the 2021 Western Star 49X

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2021 Western Star 49X
CampaignFiledSubjectComponentVehiclesRemedy
26V-079Feb 11, 2026Stud connecting the battery to the starter at the frame rail may have been incorrectly installed or may corrode, which can cause a short circuitElectrical system26,960Part replacement
25V-760Nov 4, 2025Axle clamp fasteners may be loose, which can result in a loss of vehicle controlSuspension18,783Repair or modification
25V-326Jun 23, 2025Stud connecting the battery to the starter at the frame rail may have been incorrectly installed, which can cause a short circuitElectrical system22,271Part replacement
24V-668Sep 10, 2024Brake lights may not illuminate when the brakes are automatically applied during an active brake assist (ABA) eventLighting16,890Software update
23V-208Mar 28, 2023Hazard warning lights may flash improperly during an Advanced Braking Assist eventLighting24,282Software update
23V-073Feb 10, 2023Brake modulator valves on the front axle may corrode and cause the vehicle to pull to the affected side during braking initiated by Electronic…Stability and traction control70,167Software update
22V-817Nov 1, 2022Brake modulator valves on the front axle may corrode and cause the vehicle to pull to the affected side during an Adaptive Cruise Control (ACC)…Driver assistance219,390Software update
22V-654Aug 29, 2022Hood bezel covers may detachStructure3,498Repair or modification
22V-230Apr 8, 2022Windshield wiper linkages may break, causing the windshield wipers to failVisibility and wipers689Part replacement
22V-227Apr 7, 2022Stainless steel cover on the side air intake may loosen and detach from the vehicleStructure2,284Part replacement
21V-965Dec 13, 2021Fuel tubes between the fuel rail and the injectors for cylinders four, five, and six may fatigue and crack, which can result in a high pressure…Fuel system2,843Part replacement
21V-864Nov 5, 2021Steering shaft may not have been properly installed, causing it to separate from the steering gearDo not driveSteering479Repair or modification
21V-481Jun 25, 2021Battery cable terminal may break, resulting in a loss of electrical power and unintended engine stallElectrical system122,056Part replacement
Source: NHTSA ODI recalls file.
Owner complaints

What owners reported about the 2021 Western Star 49X

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

0 complaints on file.

    Source: NHTSA ODI complaints file.
    Investigations

    NHTSA has not opened an investigation on this model year

    Source: NHTSA ODI investigations file.
    Service bulletins

    221 manufacturer communications cover this model year

    Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.

    • CXA 08_26_X-Series HD Sus Aug 20, 2026 · Other
      CX Advocate for X-Series HD Front Suspension Threaded
    • CXA 08_26_Equalizer Beam Aug 20, 2026 · Other
      CX Advocate for Twin Steer Equalizer Beam Bushing Wear
    • TSB-54-375-FTL Jul 10, 2026 · Service Bulletin/Repair Instructions
      Revised Technical Service Bulletin for Removing Odometer Pause Wiring Modifications
    • PB-47-900-WST Jun 1, 2026 · Service Bulletin/Repair Instructions
      Parts Bulletin for Fluorosilicone Fuel Tank Cap Seals
    • TSB-26-007-WST May 28, 2026 · Service Bulletin/Repair Instructions
      Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
    • CXA 05_26_Equalizer Beam May 21, 2026 · Other
      CX Advocate for Twin Steer Equalizer Beam Bushing Wear
    • PB-31-026-WST Apr 10, 2026 · Service Bulletin/Repair Instructions
      Parts Bulletin for Bumper and Rock Guard Part Numbers
    • TSB-32-020-WST Oct 17, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for TufTrac M12 Bolts
    • FleetCom_ECU Faults Jan 12, 2026 · Other
      Fleet Communications for Intermittent Connections and ECU Fault Codes
    • TSB-26-006-WST Jan 30, 2026 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for DT12 Excessive Wear
    • CXA_01_26_Trans Support Jan 15, 2026 · Other
      CX Advocate for Aftermarket Transmission Support
    • FleetCom_Heater Core Dec 11, 2025 · Other
      Fleet Communications for Heater Core Plugging
    • FleetCom_ECP Module Dec 11, 2025 · Other
      Fleet Communications for ECP (Electronic Control Pneumatic) Module Water Ingress
    • SS 781-WST Dec 9, 2025 · Other
      Revised Service Solution for Western Star vehicles with excessive water intrusion into the air system
    • TSB54-101-WST Dec 1, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin Low Coolant Sensor
    • FleetCom_Low Coolant Nov 19, 2025 · Other
      Fleet Communications for Low Coolant Sensor
    • CXA 11_25_Tech Questions Nov 20, 2025 · Other
      CX Advocate for Questions/Issues Raised
    • CXA 11_25_ECU Faults Nov 20, 2025 · Other
      CX Advocate for Intermittent Connections and ECU Fault Codes
    • CXA 11_25_ECP Modules Nov 20, 2025 · Other
      CX Advocate for ECP (Electronic Control Pneumatic) Modules, possible water ingress
    • TSB82-003-WST Nov 6, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for Fixing Unintended Wiper Sweep
    • CXA_10_25_Tech Questions Oct 16, 2025 · Other
      CX Advocate for technical questions/issues raised
    • CXA_10_25_Odometer Pause Oct 16, 2025 · Other
      CX Advocate for Removing Odometer Pause Wiring Modifications (TSB-54-375-FTL, TSB-54-100-WST)
    • CXA_10_25_Low Coolant Oct 16, 2025 · Other
      CX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
    • CXA_10_25_J1939 Comm Oct 16, 2025 · Other
      CX advocate for WST X-Series J1939 Communication Errors with Cummins Engines
    • CXA_10_25_Cummins X15 Oct 16, 2025 · Other
      CX Advocate for Cummins X15 Power Steering Pump Plumbing
    • CXA_10_25_Conmet Oil Pan Oct 16, 2025 · Other
      CX Advocate for ConMet Oil Pan Insert Additional Issues
    • TSB46-010-WST Sep 30, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for Cummins X15 Power Steering Pump Plumbing
    • CXA_9_25_Tech Questions Sep 18, 2025 · Other
      CX Advocate for technical questions/issues raised
    • MYCOM_09022025-1 Sep 2, 2025 · Other
      My Communications for UFI 0-Ring Announcement
    • CXA_8_25_Tech Questions Aug 21, 2025 · Other
      CX Advocate for technical questions/issues raised
    • TSB54-100-WST Aug 20, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for Removing Odometer Pause Wiring Modifications
    • PB33-005-WST Jun 19, 2025 · Service Bulletin/Repair Instructions
      Parts Bulletin for Tie Rod Assembly Part Breakdown
    • CXA_5_25_Headlight Wiring May 15, 2025 · Other
      CX Advocate for Headlight wiring (TSB54-099-WST)
    • TSB26-008-WST Apr 30, 2025 · Service Bulletin/Repair Instructions
      Service Solution for DT12 Oil Plug Ports
    • SS765-WST Apr 30, 2025 · Other
      Service Solution for ECP Solenoid Valve Interim Replacement Parts
    • FAB343 Apr 18, 2025 · Other
      Features and Benefits for Detroit Connect UpfrontService Extension
    • FAB342 Apr 18, 2025 · Other
      Features and Benefits for Detroit Connect Base Service Renewal
    • SS784-WST Apr 10, 2025 · Other
      Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
    • CXA 3_25_SAS01T to SAS03T Mar 20, 2025 · Other
      CX Advocate for SAS01T to SAS03T replacement (TSB54-373-FTL, TSB54-097-WST)
    • CXA 3_25_NOx Mar 20, 2025 · Other
      CX Advocate for NOx conversion low faults
    • SS781-WST Feb 27, 2025 · Other
      Service Solution for Western Star vehicles with excessive water intrusion into the air system
    • CXA 2_25_Turbo Oil Drain Feb 20, 2025 · Other
      CX Advocate for turbo oil drain cracking
    • CXA 2_25_NOx Feb 20, 2025 · Other
      CX Advocate for NOx conversion low faults
    • CXA 2_25_DA Fault Code Feb 20, 2025 · Other
      CX Advocate for M2 Plus, 47X, 49X Fault Code 232/524000/19- ECU CPC data error
    • SS770-WST Feb 5, 2025 · Other
      Service Solution for 47X/49X Dual Power Steering Gear Orifice Fittings
    • SS762-WST Feb 12, 2025 · Other
      Revised Service Solution for X-Series Western Star Fault Code 232/524000/19- ECU CPC data error
    • TSB54-097-WST Feb 4, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for SAS01T to SAS03T Replacement Information
    • TSB26-007-WST Feb 4, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for DT12 OVX Transmission Refresh
    • TSB26-006-WST Feb 4, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for DT12 Excessive Wear
    • TSB01-001-DDC Feb 5, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for GHG17 and Newer DD Platform Heavy Duty Oil Pan Drain Plug Inserts
    • TSB91-004-WST Jan 30, 2025 · Service Bulletin/Repair Instructions
      Technical Service Bulletin for Repairing Seat Occupancy Sensor for ISRI, SEARS and National Truck Seats
    • SS778-WST Jan 14, 2025 · Other
      Service Solution for Power Steering Reservoir Fill Cap Venting
    • SS776-WST Jan 15, 2025 · Other
      Service Solution for X-Series intermittent no-start and CPC not configured message
    • CXA 1_16_Park Brake Jan 16, 2025 · Other
      CX Advocate for unwanted park brake warning (TSB-54-098-WST)
    • CXA 1_16_Turbo Oil Drain Jan 16, 2025 · Other
      CX Advocate for turbo oil drain cracking
    • CXA 1_16_NOx Jan 16, 2025 · Other
      CX Advocate for NOx conversion low faults
    • CXA 1_16_GATS2.4 Jan 16, 2025 · Other
      CX Advocate for GATS2.4 being expanding to DD15
    • CXA 1_16_DD13 Altitude Jan 16, 2025 · Other
      CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
    • CXA 1_16_CARB Truck Chec Jan 16, 2025 · Other
      CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
    • D24R2-OWN LTR Dec 3, 2024 · Emissions
      Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming
    Source: NHTSA manufacturer communications files.