No complaints are listed for the 2012 Oshkosh S-Series. NHTSA's API and bulk file list none in this build.
Data build 2026-10-08.
NHTSA lists this vehicle as OSHKOSH S-SERIES.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
2 recalls.
Date: 2015-06-01. Systems: ENGINE AND ENGINE COOLING.
Defect: 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 from the crankcase ventilation breather, possibly allowing engi (excerpt)
Consequence: If engine oil comes into contact with a hot surface, there is an increased risk of a fire. (excerpt)
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 output under misfire conditions to limit crankcase pressures. These repairs will be performed free of charge. The recall began on June 12, 2015. Owners may contact Oshkosh custome (excerpt)
Do not drive: No. Park outside: No.
Date: 2014-04-07. Systems: ENGINE AND ENGINE COOLING.
Defect: 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 operation of the intake manifold pressure sensor.
Consequence: The improper operation of the sensor could induce elevated exhaust temperatures or flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury to a person near the exhaust pipe.
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 vehicle owners in April 2014. Owners may contact Oshkosh at 1-920-235-9150 or contact Cummins Inc. at 1-800-343-7357.
Do not drive: No. Park outside: No.
Manufacturer communications
13 manufacturer communications.
Communications by system| System | Count |
|---|
| EQUIPMENT | 4 |
|---|
| POWER TRAIN | 4 |
|---|
| ELECTRICAL SYSTEM | 2 |
|---|
| SUSPENSION | 2 |
|---|
| FUEL SYSTEM, OTHER | 1 |
|---|
10246253
Date: 2023-11-07. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.
This bulletin provides instructions for installing new updated front shock absorbers and upper mounting brackets. The updated shock absorber and mounting bracket lowers the top of the shock absorber improving the allowable maximum travel of the front leaf spring pack and keeps the shock absorber
10246254
Date: 2023-11-07. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
This bulletin provides instructions for installing rubber hose STAUFF clamps in areas of the vehicle that have hard line STAUFF clamps installed on rubber hoses. Rubber hose STAUFF clamps have a smooth inner contact surface and filleted edges. Installing rubber hose STAUFF clamps will reduce pot
10244977
Date: 2023-10-03. Type: Service Bulletin/Repair Instructions. Systems: FUEL SYSTEM, OTHER.
This bulletin provides instruction for installing a hydraulic system charge pump filter.
10240400
Date: 2023-07-24. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
This bulletin provides information on updating hydraulic hose clamping below the cab to match current production. Engineering recommends changing out the front STAUFF clamp using the following procedure. The second STAUFF clamp can be changed out using this procedure if desired.
10235770
Date: 2023-04-05. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
This bulletin provides information on topics specific to transmission high temperature warnings reported in the field. The topics listed were helpful in preventing transmission high temperature warning conditions.
10198990
Date: 2021-06-28. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
This bulletin provides instruction for replacing the water pump impeller due to corrosion. Oshkosh has received reports of non-working water pumps due to the pump impeller becoming corroded and seized, causing the pump not to spin. A new impeller made of an improved alloy was developed to eliminat
10198993
Date: 2021-06-23. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
This bulletin provides information for vehicle owners that have a Dana series 172 or 175 rear axle without a lubricant drain plug in the bottom of the axle housing.
10198992
Date: 2021-06-16. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
This bulletin provides instruction for replacing the mixer pump PTO shaft, mixer pump input yoke, and mixer pump input yoke bearing U-bolts to the current production configuration. The new PTO shaft is larger with greaseable crosses and requires a new mixer pump input yoke and replacing the input
10198991
Date: 2021-06-14. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
This bulletin provides instructions for bolting the water tank mounting feet to the water tank if the bonded feet become loose.
10194921
Date: 2021-05-12. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
This bulletin provides instruction for checking electrical connections at various critical locations. Loose electrical connections can cause false readings and lead to electrical system errors.