2020 OSHKOSH S-SERIES — Problems, Recalls & Safety Data
N/A
Safety Rating
0
Owner Complaints
7
Recalls
15
Service Bulletins
0
Investigations
Overview of the 2020 OSHKOSH S-SERIES
The 2020 OSHKOSH S-SERIES has received a total of 0 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). There have been 14 recall campaigns affecting this vehicle, covering issues with ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR, FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL. 15 technical service bulletins have been issued by Oshkosh Corporation for this model year.
Recalls for the 2020 OSHKOSH S-SERIES
NHTSA has recorded 14 recalls for the 2020 OSHKOSH S-SERIES, potentially affecting up to 11,721 vehicles.
Recall 22V378000 — ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
| 1,316 vehicles affected
Defect: 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.
Consequence: Damaged alternator electrical cables can increase the risk of a fire.
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 notification letters were mailed on...
View full details →Recall 22V008000 — FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL
| 1,608 vehicles affected
Defect: 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.
Consequence: A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire.
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 charge. Owner notification letters...
View full details →Recall 22V008000 — FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL
| 1,608 vehicles affected
Defect: 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.
Consequence: A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire.
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 charge. Owner notification letters...
View full details →Recall 22V008000 — FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL
| 1,608 vehicles affected
Defect: 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.
Consequence: A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire.
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 charge. Owner notification letters...
View full details →Recall 22V009000 — SUSPENSION:MULTIPLE AXLE
| 1,268 vehicles affected
Defect: Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. The u-bolts securing the front axle may fail.
Consequence: Bolt failure may allow the front axle to shift or detach, increasing the risk of a crash.
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.
View full details →Recall 22V009000 — SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE
| 1,268 vehicles affected
Defect: Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. The u-bolts securing the front axle may fail.
Consequence: Bolt failure may allow the front axle to shift or detach, increasing the risk of a crash.
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.
View full details →Recall 21V851000 — STEERING:HYDRAULIC POWER ASSIST:PUMP
| 697 vehicles affected
Defect: 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.
Consequence: A loss of power steering assist increases the risk of a crash.
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 notification letters were...
View full details →Recall 21V482000 — ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
| 897 vehicles affected
Defect: 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.
Consequence: The incorrectly sized fuse may blow during an ABS braking event, increasing the risk of a crash.
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 1-888-686-7278.
View full details →Recall 21V482000 — ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
| 897 vehicles affected
Defect: 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.
Consequence: The incorrectly sized fuse may blow during an ABS braking event, increasing the risk of a crash.
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 1-888-686-7278.
View full details →Recall 21V125000 — POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:SHAFT:OUTPUT
| 19 vehicles affected
Defect: 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.
Consequence: A fractured rear output shaft may cause the shaft or interaxle driveline to detach from the vehicle, increasing the risk of a crash or injury.
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 customer service...
View full details →Recall 21V125000 — POWER TRAIN:MANUAL TRANSMISSION:INTERNAL:SHAFT:OUTPUT
| 19 vehicles affected
Defect: 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.
Consequence: A fractured rear output shaft may cause the shaft or interaxle driveline to detach from the vehicle, increasing the risk of a crash or injury.
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 customer service...
View full details →Recall 20V499000 — EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH
| 172 vehicles affected
Defect: 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 applied. Failure of the front and rear...
Consequence: As a result of a pressure switch air leak, the braking distance may be diminished and/or the parking brake may automatically engage. If the vehicle is equipped with an affected brake switch on both the front and the rear brakes and both parts fail, the brake lights may not operate. These conditions may increase the risk of a crash.
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 1-888-686-7278.
View full details →Recall 20V499000 — PARKING BRAKE:CONVENTIONAL:AIR
| 172 vehicles affected
Defect: 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 applied. Failure of the front and rear...
Consequence: As a result of a pressure switch air leak, the braking distance may be diminished and/or the parking brake may automatically engage. If the vehicle is equipped with an affected brake switch on both the front and the rear brakes and both parts fail, the brake lights may not operate. These conditions may increase the risk of a crash.
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 1-888-686-7278.
View full details →Recall 20V499000 — SERVICE BRAKES, AIR
| 172 vehicles affected
Defect: 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 applied. Failure of the front and rear...
Consequence: As a result of a pressure switch air leak, the braking distance may be diminished and/or the parking brake may automatically engage. If the vehicle is equipped with an affected brake switch on both the front and the rear brakes and both parts fail, the brake lights may not operate. These conditions may increase the risk of a crash.
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 1-888-686-7278.
View full details →Owner Complaints for the 2020 OSHKOSH S-SERIES
No complaints have been filed with NHTSA for the 2020 OSHKOSH S-SERIES.
Safety Rating for the 2020 OSHKOSH S-SERIES
NHTSA has not yet tested the 2020 OSHKOSH S-SERIES in its New Car Assessment Program.
Technical Service Bulletins for the 2020 OSHKOSH S-SERIES
Oshkosh Corporation has issued 15 technical service bulletins (TSBs) for the 2020 OSHKOSH S-SERIES. TSBs are notices sent by manufacturers to their dealers describing a known issue and the recommended repair procedure.
FDM-IB-011 — ENGINE
This bulletin provides information on making sure the dedicated ground from the battery negative to the engine block ground stud remains installed when a powertrain harness is replaced. Service personnel have found instances of this ground cable not being reconnected when a powertrain harness has been replaced, this dedicated ground...
FDM-SVC-028 — ELECTRICAL SYSTEM
This bulletin provides instruction for installing an updated cab door switch.
FDM-TSIB-018 — STEERING
This bulletin provides instruction to update the hydraulic steering system by adding an external pressure relief valve. Field reports of failed steering pump seals led to testing that determined internal recirculation of hot oil was the cause of the seal failures.
FDM-TSIB-016 — ELECTRICAL SYSTEM
This bulletin provides instruction to correct an installation error that may damage the battery box power distribution fuses, and updates the fuse identification label.
FDM-TSIB-016 — POWER TRAIN
This bulletin provides instruction to correct an installation error that may damage the battery box power distribution fuses, and updates the fuse identification label.
FDM-TSIB-017 — PARKING BRAKE
This bulletin provides general information about the v8.2.1/7.6.1 software update that enhances the vehicle?s hydraulic system, auxiliary axles (tag, pusher, and Load-Span®), parking brake system, and drum speed.
FDM-TSIB-017 — EQUIPMENT
This bulletin provides general information about the v8.2.1/7.6.1 software update that enhances the vehicle?s hydraulic system, auxiliary axles (tag, pusher, and Load-Span®), parking brake system, and drum speed.
FDM-TSIB-017 — ELECTRICAL SYSTEM:SOFTWARE
This bulletin provides general information about the v8.2.1/7.6.1 software update that enhances the vehicle?s hydraulic system, auxiliary axles (tag, pusher, and Load-Span®), parking brake system, and drum speed.
FDM-TSIB-001 — EQUIPMENT ADAPTIVE/MOBILITY
This bulletin provides instruction and information on required vehicle hydraulic system updates that address performance deficiencies in the vehicle?s hydraulic system.
FDM-TSIB-001 — ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:SEALS/GASKETS
This bulletin provides instruction and information on required vehicle hydraulic system updates that address performance deficiencies in the vehicle?s hydraulic system.
Showing 10 of 15 technical service bulletins.
NHTSA Investigations for the 2020 OSHKOSH S-SERIES
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the OSHKOSH S-SERIES
- 2015 OSHKOSH S-SERIES — 0 complaints
- 2016 OSHKOSH S-SERIES — 0 complaints
- 2017 OSHKOSH S-SERIES — 0 complaints
- 2018 OSHKOSH S-SERIES — 0 complaints
- 2019 OSHKOSH S-SERIES — 0 complaints
- 2020 OSHKOSH S-SERIES (current)
- 2021 OSHKOSH S-SERIES — 0 complaints
- 2022 OSHKOSH S-SERIES — 0 complaints
- 2023 OSHKOSH S-SERIES — 0 complaints
- 2024 OSHKOSH S-SERIES — 0 complaints
- 2025 OSHKOSH S-SERIES — 0 complaints
Other OSHKOSH Models
- OSHKOSH OSHKOSH — 11 total complaints
- OSHKOSH X LINE — 4 total complaints
- OSHKOSH M LINE — 2 total complaints
- OSHKOSH XC CHASSIS — 2 total complaints
- OSHKOSH DA 1500 SERIES — 1 total complaint
- OSHKOSH MC18FG — 1 total complaint
- OSHKOSH XC — 1 total complaint
- OSHKOSH A1823 — 0 total complaints