AutoStatsIQ
Data through Oct 2026
Model year

2021 Western Star 4700

Truck, diesel, 8x4, built in United States. Owner complaints on file from Apr 19, 2024 to Apr 19, 2024.

Recalls (14)Complaints (1)Investigations (0)Bulletins (108)
Recall campaigns covering this model year1444k vehicles or units across those campaigns
Owner complaints1Close to the median 2021 truck
Severity index100.02021 trucks average 15.0
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2021 Western Star 4700 peaked in 2024, with 1 filed

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

00.250.50.7512024120252026
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

100% of complaints about the 2021 Western Star 4700 name brakes

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

Brakes
1
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

14 recall campaigns cover the 2021 Western Star 4700

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 4700
CampaignFiledSubjectComponentVehiclesRemedy
22V-338May 16, 2022Gross Axle Weight Rating (GAWR) listed on the Federal Certification Label is incorrect, which can allow the vehicle to be overloadedEquipment185Part 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-896Nov 17, 2021Tires and rims are not approved and rated for these vehicles from the Tire and Rim Association or tire manufacturerTires307Part replacement
21V-369May 19, 2021Tie rod clamps may be loose, which could result in loose tie rod ends that could break or detachSteering8,482Part replacement
21V-326May 7, 2021Sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leakFuel system9,662Part replacement
21V-256Apr 12, 2021Steering arm and tie rod bolts may have a defective seam that can fractureSteering12,470Part replacement
21V-209Mar 24, 2021Clutch flange may breakPowertrain2Part replacement
21V-206Mar 24, 2021Ground harness wiring may be undersized and may cause a connector to meltElectrical system5,111Part replacement
21V-018Jan 20, 2021On certain vehicles, one of the six brake caliper mounting bolts on the driver side steer axle may have been incorrectly tightenedBrakes133Repair or modification
20V-660Oct 27, 2020Steer axle spindle nut snap-ring locking feature may be incorrectly installed or missing from the left spindle nut at the spindleSuspension1,411Part replacement
20V-634Oct 14, 2020Vehicle certification label contains incorrect information, stating a Gross Axle Weight Rating (GAWR) that exceeds the tire capacity ratingEquipment53Repair or modification
20V-539Sep 3, 2020Lower rear pivot cap screws may not be long enough to sufficiently engage the locking feature of the corresponding nutsSuspension103Inspection
20V-281May 18, 2020Particular wire in the ground harness may be undersized, possibly resulting in a melted connector in the ground circuit harnessElectrical system2,987Part replacement
20V-211Apr 10, 2020Gross Axle Weight Rating (GAWR) on the certification label may be incorrect, possibly resulting in the vehicle being overloadedEquipment89Label or owner notice
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2021 Western Star 4700

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.

1 complaint on file, page 1 of 1.

  1. Filed Apr 19, 2024Failure Mar 15, 2023Alpharetta, GAService brakesCrash

    The contact owns a 2021 Western Star 4700 WD110084S. The contact stated that an employee was parked on a hill and the parking brake was activated, however, while the worker was outside of the vehicle for approximately 4 minutes, the parking brake was deactivated. The vehicle rolled forward down a hill and stopped when it crashed into a tree. There was yard damage to a resident's home. No police report was filed. No injuries were sustained. The vehicle was taken to an independent mechanic where the entire cab was replaced. The contact discovered an unknown NHTSA Campaign, however, the VIN was not included. The manufacturer was not notified. The failure mileage was unknown.

    NHTSA complaint 11584008
Source: NHTSA ODI complaints file.
Investigations

NHTSA has not opened an investigation on this model year

Source: NHTSA ODI investigations file.
All investigations
Service bulletins

108 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.

  • PB-47-900-WST Jun 1, 2026 · Service Bulletin/Repair Instructions
    Parts Bulletin for Fluorosilicone Fuel Tank Cap Seals
  • CXA 03_26_Surge Tank Mar 19, 2026 · Other
    CX Advocate for discolored coolant surge tanks (24CSA-20)
  • TSB-32-020-WST Oct 17, 2025 · Service Bulletin/Repair Instructions
    Technical Service Bulletin for TufTrac M12 Bolts
  • CXA_10_25_Conmet Oil Pan Oct 16, 2025 · Other
    CX Advocate for ConMet Oil Pan Insert Additional Issues
  • 24CSA-19Rev Aug 15, 2025 · Other
    Revised Customer Service Annoucement for No Trouble Found Heavy Duty Engine Product (HDEP) Oil Separator Leaks
  • PB33-005-WST Jun 19, 2025 · Service Bulletin/Repair Instructions
    Parts Bulletin for Tie Rod Assembly Part Breakdown
  • CXA 3_25_NOx Mar 20, 2025 · Other
    CX Advocate for NOx conversion low faults
  • CXA 2_25_NOx Feb 20, 2025 · Other
    CX Advocate for NOx conversion low faults
  • SS778-WST Jan 14, 2025 · Other
    Service Solution for Power Steering Reservoir Fill Cap Venting
  • CXA 1_16_NOx Jan 16, 2025 · Other
    CX Advocate for NOx conversion low faults
  • WI24-019 Nov 11, 2024 · Warranty Program/Extension
    Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
  • SS1023366-Detroit Oct 1, 2024 · Other
    Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
  • 24CSA-20 Oct 7, 2024 · Service Bulletin/Repair Instructions
    Customer Service Annoucement for Discolored Coolant Surge Tank on Heavy Duty Engine Product (HDEP)
  • 24CSA-19 Oct 7, 2024 · Other
    Customer Service Annoucement for Heavy-Duty Engine Product (HDEP) Oil Separator Leaks
  • SS1023366-Detroit Sep 16, 2024 · Other
    Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
  • CXA 8_24_Conmet Oil Pan Aug 15, 2024 · Other
    CX Advocate for ConMet Oil Pan Insert Additional Failures
  • CXA 7_24_NOx Jul 18, 2024 · Other
    CX Advocate for NOx conversion low faults. Update to CXA 6_24_NOx submission.
  • CXA 7_24_Conmet Oil Pan Jul 18, 2024 · Other
    CX Advocate for ConMet Oil Pan Insert Additional Failures
  • CXA 06_24_Clutch Bolts Jun 21, 2024 · Other
    CX Advocate communication for clutch bolts
  • CXA 06_24_NOx Jun 21, 2024 · Other
    CX Advocate communication for NOx conversion low faults
  • VSWP Customer Letter May 21, 2024 · Other
    Customer letter regarding variable speed water pump.
  • SS734-WST May 24, 2024 · Other
    Service Solution for Thread Spring Pin Suspension Alignment & Installation
  • SS763-WST May 8, 2024 · Other
    Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
  • TSB35-023-WST May 29, 2024 · Service Bulletin/Repair Instructions
    Technical Service Bulletin for New Final Drive Over Heat Diagnostic
  • SS3144-FTL Apr 25, 2024 · Service Bulletin/Repair Instructions
    Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
  • ICI24-006 Feb 20, 2024 · Service Bulletin/Repair Instructions
    Important Campaign Information letter for FL974 - Revised Bulletin & Population
  • FL974 Feb 20, 2024 · Service Bulletin/Repair Instructions
    Revised Emissions Recall: Cummins DEF Sensor Shortage. REVISION: Some vehicles formerly in Group F have been moved to Group G and have been assigned a new part number as specified in Table 1. An SRT for 'Calibration Code Only: Update or Confirm' has been ad…
  • FL974 Jan 19, 2024 · Service Bulletin/Repair Instructions
    Emissions Recall: Cummins DEF Sensor Shortage
  • SBW83-030 Jun 27, 2022 · Service Bulletin/Repair Instructions
    Updated Western Star Service Bulletin for HVAC Actuator Replacement
  • SBW83-030 May 10, 2022 · Service Bulletin/Repair Instructions
    Western Star Service Bulletin for HVAC Actuator Replacement. The wiring harness of the actuator of the fresh air recirculation door on Western Star vehicles equipped with Red Dot HVAC systems should be inspected for signs of water intrusion and corrosion.
  • SBW49-020 Feb 15, 2022 · Service Bulletin/Repair Instructions
    Western Star Service Bulletin for DEF Connector Reinforcement Caps
  • CALWS83-001REV Dec 9, 2021 · Service Bulletin/Repair Instructions
    HVAC Actuator Wiring Harness. Revision History: Service kit part number changed from RDH RD5 17147 0 to WWS RD-3-9069-0 on 12/9/21. The wiring harness of the actuator of the fresh air recirculation door, shown in Fig. 1, on Western Star vehicles equipped wi…
  • SF613 Oct 1, 2021 · Service Bulletin/Repair Instructions
    ConMet Front Hub to Rotor Fasteners. On certain vehicles, the front rotor nuts may not be torqued to manufacturer specification. Loose components could cause damage to the ABS tone rings, the ABS sensors, and the anchor plate mounting fasteners.
  • ICI21-030 Oct 18, 2021 · Service Bulletin/Repair Instructions
    SF626 Western Star Window Replacement Inspection Notification. This letter is to inform you that Field Service Campaign SF626 Western Star Window Replacement Inspection Notification campaign was released.
  • CALWS83-001 Sep 10, 2021 · Service Bulletin/Repair Instructions
    Customer Advisory Letter for HVAC Actuator Wiring Harness. The wiring harness of the actuator of the fresh air recirculation door, shown in Fig. 1, on Western Star vehicles equipped with Red Dot HVAC systems should be inspected for signs of water intrusion …
  • SBW54-080 Jun 10, 2021 · Service Bulletin/Repair Instructions
    Western Star Service Bulletin for Key Fob ID Retention. Key fobs for remote keyless entry on Western Star vehicles are delivered in packages that include a unique ID for the fob. The ID is required when pairing the key fob with a vehicle.
  • SS1033094 May 12, 2017 · Service Bulletin/Repair Instructions
    Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform...
  • WSTCAE180-2020 Oct 13, 2020 · Service Bulletin/Repair Instructions
    Portland Truck Plant Paint Changes
  • WSTCAE177-2020 Aug 26, 2020 · Service Bulletin/Repair Instructions
    Meritor Transfer Case Updates
  • WSTCAE176-2020 Aug 20, 2020 · Service Bulletin/Repair Instructions
    Removable Front Tow Hook Changes
  • WSTCAE169-2018 Dec 18, 2018 · Service Bulletin/Repair Instructions
    Electronic Stability Control Requirement for US and Canadian Tractors
  • TSN 88-07 May 19, 2015 · Service Bulletin/Repair Instructions
    Western Star 4700 non removable bug screen with additional coverage to the bumper - TSN
  • SBW98003 Dec 1, 2016 · Service Bulletin/Repair Instructions
    Paint Peeling, Hood.
  • TechTalk23864 Apr 26, 2021 · Service Bulletin/Repair Instructions
    Tech Talk discussion on a belt stretch tool sent to service techs.
  • SS701-WST2021 Apr 29, 2021 · Service Bulletin/Repair Instructions
    Service Solution for DT12 Harness Chaffing - PT Can Faults. Transmission will not shift into Gear while driving or will not start and trigger multiple PT CAN Fault Codes.
  • WI21-009 Apr 19, 2021 · Service Bulletin/Repair Instructions
    Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times (SDTs) shown. The updated after treatment system (ATS) diesel exhaust fluid (DEF) pump times will be applied to repair orders opened on or after April 12, 2021.
  • WI21-008 Apr 6, 2021 · Service Bulletin/Repair Instructions
    Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown. The updated times will be applied to repair orders opened on or after April 5, 2021.
  • D21M3 Mar 16, 2021 · Service Bulletin/Repair Instructions
    Detroit Field Service Campaign for DT12 Gear Grind During Downshift Software Update.
  • WP60-100 Mar 10, 2021 · Service Bulletin/Repair Instructions
    Updated Western Star Parts Technical Bulletin for Universal Design Floor Mats. This bulletin replaces the version dated February 12, 2021. Information about parts notes in the Paragon system have been added and the trimming instructions are revised. Univers…
  • SBW54-057 Oct 27, 2020 · Service Bulletin/Repair Instructions
    Western Star Service Bulletin for Powernet Troubleshooting Guide - Batteries, Path, Alternator, and Starter. When troubleshooting powernet issues, use the BCT-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter is the only Daimler-approved t…
  • WP21-007 Mar 22, 2021 · Service Bulletin/Repair Instructions
    Warranty Policy Letter for battery tags. DTNA determined that since adopting the AutoMeter BCT-460DTNA Powernet Assessment Tool (AutoMeter) as the required powernet system tester, not all battery tags have to be retained support Warranty-related claims.
  • TechTalk8097 Feb 6, 2021 · Service Bulletin/Repair Instructions
    Tech Talk discussion on western star PTO.
  • WI21-004 Feb 1, 2021 · Service Bulletin/Repair Instructions
    Warranty Information Letter for Detroit Resources: Exploded View DD Platform and DT12 Posters. Detroit's TechComm team created visual aids for the network and released exploded view posters for DD platform engines. In early 2021, Detroit added multiple DT12…
  • 21OEM-06 Feb 19, 2021 · Service Bulletin/Repair Instructions
    Starting on November 23, 2020, DiagnosticLink 8.13 (Build 4527) was made available. Current subscribers of DiagnosticLink 8.11 or 8.12 may upgrade to DiagnosticLink 8.13 at no cost. All DTNA Service shops & OEM locations are required to maintain the latest …
  • 20TS-07REV Feb 19, 2021 · Service Bulletin/Repair Instructions
    Revised Technical Service Letter for Cold Weather Faults on GHG17/21 DD13 with MCM Software Version 14. Due to colder weather, there may be an increase in the frequency of faults, noted below, on GHG17/21 DD13 trucks built after June 5th 2019. This is due t…
  • WP60-100 Feb 12, 2021 · Service Bulletin/Repair Instructions
    Western Star Parts Technical Bulletin for Universal Design Floor Mats. Universal floor mat designs fit multiple cab configurations and may require trimming. Trim lines displaying size options are scored into the pad side of the mat; use an existing floor ma…
  • ICI21-003 Feb 15, 2021 · Service Bulletin/Repair Instructions
    Superseding Letter to an Important Campaign Information Letter to announce a reimbursement available to dealers for travel to a customer's location to perform a recall or field service campaign. Potential travel reimbursement applies to DTNA truck dealers a…
  • WI21-006 Feb 15, 2021 · Service Bulletin/Repair Instructions
    Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.
  • WI21-005 Feb 15, 2021 · Service Bulletin/Repair Instructions
    Warranty Information Letter for Body Builder/Truck Equipment Manufacturer Demonstration Program.
  • WI20-014R Feb 8, 2021 · Service Bulletin/Repair Instructions
    Revised Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance. In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimi…
Source: NHTSA manufacturer communications files.
About service bulletins