Oshkosh S-Series Recalls & Complaints by Model Year
NHTSA lists 30 safety recalls and 2 owner complaints across 37 model years of the Oshkosh S-Series (1978–2025). The most-complained-about year is 2000.
Pick your Oshkosh S-Series model year
- 1978
- 1979
- 1980
- 1981
- 1982
- 1983
- 1984
- 1985
- 1986
- 1987
- 1988
- 1989
- 1990
- 1991
- 1992
- 1997
- 1998
- 1999
- 2000
- 2005
- 2006
- 2007
- 2008
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
| Model year | Recalls | Complaints |
|---|---|---|
| 2025 Oshkosh S-Series | 1 | 0 |
| 2024 Oshkosh S-Series | 2 | 0 |
| 2023 Oshkosh S-Series | 1 | 0 |
| 2022 Oshkosh S-Series | 5 | 0 |
| 2021 Oshkosh S-Series | 7 | 0 |
| 2020 Oshkosh S-Series | 7 | 0 |
| 2019 Oshkosh S-Series | 6 | 0 |
| 2018 Oshkosh S-Series | 3 | 0 |
| 2017 Oshkosh S-Series | 2 | 0 |
| 2016 Oshkosh S-Series | 3 | 0 |
| 2015 Oshkosh S-Series | 4 | 0 |
| 2014 Oshkosh S-Series | 5 | 0 |
| 2013 Oshkosh S-Series | 3 | 0 |
| 2012 Oshkosh S-Series | 2 | 0 |
| 2008 Oshkosh S-Series | 1 | 0 |
| 2007 Oshkosh S-Series | 1 | 1 |
| 2006 Oshkosh S-Series | 2 | 0 |
| 2005 Oshkosh S-Series | 2 | 0 |
| 2000 Oshkosh S-Series | 1 | 1 |
| 1999 Oshkosh S-Series | 1 | 0 |
| 1998 Oshkosh S-Series | 1 | 0 |
| 1997 Oshkosh S-Series | 1 | 0 |
| 1992 Oshkosh S-Series | 1 | 0 |
| 1991 Oshkosh S-Series | 2 | 0 |
| 1990 Oshkosh S-Series | 1 | 0 |
| 1989 Oshkosh S-Series | 1 | 0 |
| 1988 Oshkosh S-Series | 2 | 0 |
| 1987 Oshkosh S-Series | 2 | 0 |
| 1986 Oshkosh S-Series | 2 | 0 |
| 1985 Oshkosh S-Series | 3 | 0 |
| 1984 Oshkosh S-Series | 4 | 0 |
| 1983 Oshkosh S-Series | 3 | 0 |
| 1982 Oshkosh S-Series | 1 | 0 |
| 1981 Oshkosh S-Series | 1 | 0 |
| 1980 Oshkosh S-Series | 1 | 0 |
| 1979 Oshkosh S-Series | 1 | 0 |
| 1978 Oshkosh S-Series | 1 | 0 |
What Oshkosh S-Series owners complain about
Across all model years, owners have filed 2 complaints with NHTSA. The 2000 model year has the most, with 1.
All Oshkosh S-Series recalls (30)
Every NHTSA safety campaign that lists a Oshkosh S-Series, most recent first, with the model years each one covers.
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Axle assembly (power train)
Oshkosh Corporation (Oshkosh) is recalling certain 2024-2025 S-Series vehicles. The front axle housing wall thickness may not be sufficient and can cause the axle to fail.
Remedy: Oshkosh will inspect and replace the front axles as necessary, free of charge. Owner notification letters were mailed on May 30, 2025. Owners may contact Oshkosh customer service at 1-833-304-8100.
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Accelerator pedal (vehicle speed control) and throttle (vehicle speed control)
Oshkosh Corporation (Oshkosh) is recalling certain 2022-2024 S-Series vehicles. The throttle pedal assembly may contain an oversized magnet carrier, slowing the responsiveness or causing the pedal to stick.
Remedy: Oshkosh will replace the throttle pedal, free of charge. Owner notification letters were mailed January 31, 2025. Owners may contact Oshkosh customer service at 1-888-686-7278.
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Alternator/generator/regulator (electrical system)
Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series 2.0 Concrete Mixers. Incorrectly installed alternator electrical cable clamps may rub against the vehicle frame or hydraulic hose, possibly damaging the alternator cables.
Remedy: Oshkosh will provide instructions on how to inspect the wiring, reposition the clamps, and properly secure the cables. The repair can be performed by the owner or an Oshkosh service center, free of charge. Owner…
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Fuel rail (fuel system)
Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. The fuel tubes between the fuel rail and the injector for cylinders 4, 5 and 6 may be susceptible to cracking, resulting in a high pressure fuel leak.
Remedy: On engines with 75 miles or less, dealers will install vibration isolators to the fuel tubes. Engines with more than 75 miles will receive new fuel tubes with vibration isolators. Repairs will be performed free of…
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Multiple axle (suspension) and u-bolt, leaf spring to axle (suspension)
Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. The u-bolts securing the front axle may fail.
Remedy: Oshkosh will provide new u-bolts, free of charge. Owner notification letters were mailed February 24, 2022. Owners may contact Oshkosh customer service at 1-888-686-7278.
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Pump (steering)
Oshkosh Corporation (Oshkosh) is recalling certain 2020-2021 S-Series vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist.
Remedy: Owners will inspect and replace the power steering pump as necessary. Owners may perform this work themselves or reach out to one of our service centers to perform the inspection and repair work free of charge. Owner…
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Fuses and circuit breakers (electrical system)
Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. These vehicles were manufactured with 10 amp Anti-Lock Brake System (ABS) fuses, instead of the required 15 amp ABS fuses.
Remedy: Oshkosh will provide owners new fuses, a new fuse label, and installation instructions, free of charge. Owner notification letters were mailed on July 29, 2021. Owners may contact Oshkosh customer service at…
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Multiple axle (suspension)
Oshkosh Corporation (Oshkosh) is recalling certain 2021 S-Series vehicles. The auxiliary axles may not have been properly secured and may detach.
Remedy: A technician will inspect and, as necessary, replace any improperly installed fasteners, free of charge. Owner notification letters were mailed on May 26, 2021. Owners may contact Oshkosh customer services at…
Model years: 2021
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Output (power train)
Oshkosh Corporation (Oshkosh) is recalling certain 2020-2021 S-Series vehicles. The rear axle output shaft may not have been heat-treated properly, which could cause the shaft to fracture.
Remedy: Oshkosh will notify owners, and owners will be instructed to inspect the output shaft, and if necessary, order a new one and replace it, free of charge. The recall began on March 31, 2021. Owners may contact Oshkosh…
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Switch (exterior lighting) and 2 other components
Oshkosh Corporation (Oshkosh) is recalling certain 2020 S-Series vehicles equipped with Bendix pressure switches. The plastic threads holding the two halves of the pressure switch may strip when the switch is pressurized, resulting in an air leak which, if severe enough, can cause the air system to lose pressure when the brakes are…
Remedy: Oshkosh will notify owners, and dealers will inspect the brake pressure switch and replace it as necessary, free of charge. The recall began September 28, 2020. Owners may contact Oshkosh customer service at…
Model years: 2020
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Steering and hydraulic power assist system (steering)
Oshkosh Corporation (Oshkosh) is recalling certain 2018-2019 S-Series Mixer vehicles equipped with Cummins X12 engines with two hydraulic lines. The hydraulic hoses may have been unintentionally switched and installed to the wrong location, which can cause a loss of hydraulic assist steering.
Remedy: Oshkosh will notify owners, and Oshkosh S-Series Service will correct any improperly installed hoses, free of charge. The recall began August 12, 2019. Owners may contact Oshkosh customer service at 1-888-686-7278.
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Exterior lighting
Oshkosh Corporation (Oshkosh) is recalling certain 2014-2019 S-Series Glider vehicles equipped with a strobe light package in the rear fender. The strobe lights may have been incorrectly located in the rear fender marker light position, potentially causing confusion for other drivers. As a result, the vehicles fail to comply with…
Remedy: Oshkosh will notify owners, and replace the strobe lamp with a steady burning lamp, free of charge. The recall began April 10, 2019. Owners may contact Oshkosh customer service at 1-888-686-7278.
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Fuel system, other
McNeilus Truck & Manufacturing, Inc. (McNeilus) is recalling certain 2016-2018 McNeilus Meridian Front Loader, Atlantic Front Loader, XE Rear Loader, Bridgemaster Mixer, Standard Mixer, and Oshkosh S-Series vehicles, equipped with certain MPVE-250 One-Turn Valves (OTV) on the CNG fuel tanks. If the valve knob is turned more than one…
Remedy: McNeilus will notify owners, and dealers will replace the valve with a valve from another brand, free of charge. The recall began January 7, 2019 . Owners may contact McNeilus customer service at 1-888-686-7278.
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Electrical system: module
Oshkosh Corporation (Oshkosh) is recalling certain model year 2016 S-Series Front Discharge Concrete Mixers manufactured May 16, 2016, to May 25, 2016, equipped with a Cummins ISX12 or ISX15 engine using certain engine control modules (ECM). These ECM's may experience an internal electrical short that can cause a fuse to blow, resulting…
Remedy: Cummins will notify owners, and dealers will replace the existing ECM with a new ECM, free of charge. The recall began onJuly 7, 2016. Owners may contact Oshkosh customer service at 1-888-686-7278. Owners may also…
Model years: 2016
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Pressure relief devices (fuel system)
Oshkosh Corporation (Oshkosh) is recalling certain model year 2014-2015 S-Series concrete mixers manufactured July 16, 2014, to June 30, 2015. The affected concrete mixers are powered with compressed natural gas (CNG) and are equipped with pressure relief devices (PRD) that may not function as designed, failing to vent a buildup of…
Remedy: Oshkosh will notify owners, and dealers will inspect and replace the PRD's, as necessary, free of charge. The recall began on September 25, 2015. Owners may contact Oshkosh customer service at 1-888-686-7278. Oshkosh's…
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Torque converter (power train)
Oshkosh Corporation (Oshkosh) is recalling certain model year 2015 S-Series Front Discharge concrete mixer glider trucks manufactured February 10, 2015, to March 20, 2015. The affected vehicles have Allison HD4500 transmissions that were remanufactured by Valley Truck Parts that may be coated with a thick layer of paint on the torque…
Remedy: Oshkosh has notified owners, and Valley Truck Parts will remove the paint from the mating surface of the torque converter, and replace the bolts, free of charge. The recall began on May 8, 2015. Owners may contact…
Model years: 2015
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Engine (engine and engine cooling)
Oshkosh Corporation (Oshkosh) is recalling certain model year 2012-2014 S-Series Front Discharge Concrete Mixer vehicles manufactured February 29, 2012, to November 13, 2013, and equipped with certain Cummins Westport ISL G engines. Excessive engine crankcase pressures may cause the 90-degree elbow of the vent tube assembly to detach…
Remedy: Cummins will notify owners on behalf of Oshkosh, and dealers will secure the ends of the 90-degree elbow. In addition, the electronic control module (ECM) will be reprogrammed with software that can adjust the engine…
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Service brakes, air
Oshkosh Corporation (Oshkosh) is recalling certain model year 2014-2015 S-Series Front Discharge Concrete Mixer vehicles manufactured September 24, 2013, to November 12, 2014. The affected vehicles have air tanks that hold less than the required 12 times the combined volume of the service brake chambers. As a result, these vehicles fail…
Remedy: Oshkosh will notify owners and dealers will install a larger capacity air tank, free of charge. The recall began April 15, 2015. Owners may contact Oshkosh customer service at 1-888-686-7278. Oshkosh's number for this…
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Engine (engine and engine cooling)
Oshkosh Corporation (Oshkosh) is recalling certain model year 2012-2014 S-Series Ready Mixed Concrete trucks manufactured February 29, 2012, through January 27, 2014, and equipped with certain Cummins Westport Model ISL G engines. Condensation in the intake manifold may freeze during cold weather conditions and interfere with the proper…
Remedy: Cummins Inc. and Cummins Wesport Inc. will notify owners, and authorized Cummins service facilities will upload a new ECM calibration, free of charge. Cummins Inc. and Cummins Westport Inc. began notifying the affected…
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Service brakes
Oshkosh Corporation is recalling certain model year 2013 S-Series ready mixed concrete trucks manufactured May 1, 2013, through November 27, 2013. In the affected vehicles, the brake pedal bracket may loosen due to missing lock washers.
Remedy: Oshkosh will notify owners, and dealers will inspect and correct the brake pedal mounting assembly as necessary, free of charge. The recall began February 7, 2014. Owners may contact Oshkosh at 1-888-686-7278.
Model years: 2013
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Check valve (service brakes)
Oshkosh is recalling 302 my 2008 t-series, tx, sta, h, p, s and h-tractor, airport rescue, firefighting, commercial, concrete mixer and military trucks and highway vehicles equipped with haldex air brake system control valve. The rubber diaphragm used inside the quick release valve (qrv) may delaminate and may cause leakage levels past…
Remedy: Oshkosh is working with haldex and will inspect and replace all effected qrvs free of charge. Please see 09e-004. The recall is expected to begin during june 2009. Owners may contact haldex at 1-620-365-6911 or oshkosh…
Model years: 2008
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Parking brake
On certain trucks equipped with bendix sr-7 spring brake modulating valves, the internal rubber check valve may leak causing a delay in the application of the spring brakes to park the vehicle after the operator pulls the dash valve button.
Remedy: Oshkosh is working with bendix to repair these vehicles (please see 07e-037). Bendix will install a check valve repair kit for the affected sr-7 spring brake modulating valve free of charge. The recall began on october…
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Driveline (power train)
On certain trucks equipped with arvinmeritor axle assemblies, the torque rod tower has a nonconforming location and weld. The weld can crack, leading to the tandem axle losing its anchor point, causing the driveline to bend to an angle outside its operating perimeters.
Remedy: Dealers will inspect the torque towers on the rear tandem and, if cracks are found, the torque tower will be rewelded according to instructions. Oshkosh has telephoned all owners in september 2006, advising them that…
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Frame and members (structure)
Vehicle description: front discharge concrete carriers with 6- or 8-wheel drive designed to operate off-road in difficult soils and terrain that are beyond the capability of conventional rear discharge concrete trucks. The frame rail flange impinged on the head of one or more lockbolts which attach the angle iron rear pedestal support…
Remedy: Owners have been advised to immediately check all bolts on the rear pedestals. If any one horizontal lockbolt is loose or missing, to immediately replace the loose lockbolt. Oshkosh is providing replacement kits with…
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Body (structure)
The stainless steel fasteners for the cab entry steps and grab handles can crack and break.
Remedy: Replace the step and grab handle stainless steel fasteners with grade 5 zinc and yellow coated fasteners. Oshkosh will send the replacement fasteners to owners with the notification letters. Owners will be requested to…
Model years: 1991, 1992
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Antilock (service brakes)
The rear tandem axle brakes do not meet the service brake application time requirements of FMVSS 121.
Remedy: The o.625 inch nylon air tubing between the chassis air manifold and the tandem service relay will be replaced with .75 inch nylon tubing, which will allow brake system to meet the service brake application time…
Model years: 1991
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Structure
Step tread was designed with an upturned edge. Also, incorrect bolts were used to attach the steps to vehicle; incorrect bolts may fatigue and break allowing the steps to separate from cab.
Remedy: Replace incorrectly designed steps, replace incorrect bolts.
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Fan (engine and engine cooling)
Fan blade may crack and separate where the blade overlaps the spider.
Remedy: Install a new all steel fan.
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Connection (steering)
Looseness may develop at the attachment (ball joint) of the drag link to the steering arm due to an insufficiently tightened retaining nut. This can wear the steering arm hole. Consequence of defect: steering looseness could cause handling difficulty which may result in loss of vehicle control and an accident.
Remedy: Replace drag link ball stud if wear is observed and/or torque to specification.
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Multiple axle (suspension)
These trucks were equipped with defective hydraulic pressure switches in the load span tag system. When a malfunction in this system occurs, axle to pavement pressure increases when vehicle is operated in an unloaded condition.
Remedy: The existing control switch will be replaced with a three-position switch which, by use of a neutral position, will preve nt pressure buildup. A new operation label will also be included.
Other Oshkosh models
- Oshkosh10 complaints
- X Line4 complaints
- M Line2 complaints
- Da 1500 Series1 complaints
- MC18FG1 complaints
- Xc1 complaints
- Xc Chassis1 complaints
- A18230 complaints
Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.