Oshkosh recall 26V-311: High Voltage Battery Contactor Failure May Cause Loss of Drive Power
A loss of drive power can increase the risk of a crash.
Campaign facts
- NHTSA campaign
- 26V311000 (26V-311)
- Manufacturer number
- NGDV_TSB_066
- Filed by
- Oshkosh Corporation
- Report received
- May 18, 2026
- Component
- Electrical system:propulsion system:fuses, relays, contacts, and shunts
- Vehicles potentially affected
- 76
- Model years
- 2025
- Built between
- February 6, 2025 and March 11, 2026
- Owner letters
- May 26, 2026
- Recall initiated by
- The manufacturer
- Remedy completion rate
- 100.00% (latest quarterly report)
What is wrong
Oshkosh Corporation (Oshkosh Defense) is recalling certain 2025 NGDV battery electric vehicles. In cold weather, the high voltage battery contactor may open unexpectedly, causing a loss of drive power.
The risk
A loss of drive power can increase the risk of a crash.
Why electrical defects matter: A short circuit is a fire risk and a module fault can switch off systems the driver depends on.
The remedy
Oshkosh Defense will repair or replace the batteries as necessary, free of charge. Owner notification letters were mailed May 26, 2026. Owners may contact Oshkosh Defense customer service at 1-833-304-8100. Oshkosh Defense's number for this recall is NGDV_TSB_066.
About the electrical system
Electrical campaigns cover wiring, fuses, connectors, control modules, batteries and software across the vehicle.
Vehicles covered by campaign 26V-311
- Oshkosh Ngdv Electric 2025
What to do
- Enter your VIN in NHTSA’s lookup (below) to confirm that your vehicle is included and that the repair has not already been done.
- Call a dealer for the brand and book the repair. Quote NHTSA campaign 26V-311 and the manufacturer’s number NGDV_TSB_066.
- If you notice burning smells, flickering power or warning lamps, have the vehicle checked before continuing to use it.
- Safety recall repairs are carried out free of charge by the manufacturer’s dealers. If you already paid for this repair yourself, ask the manufacturer about reimbursement and keep your receipt.
Check by VIN
A campaign rarely covers every vehicle of a model year. Enter your 17-character VIN to find the recall campaigns filed for your make, model and model year. The VIN is on the driver’s side of the dashboard (visible through the windshield), on the door-jamb label, and on your registration and insurance documents.
Is a recall still open on your vehicle? Only NHTSA’s official VIN check can say whether a campaign applies to your exact vehicle and whether the repair has already been done.
Your VIN is decoded with NHTSA’s public vPIC service to identify the make, model and year. It is not stored and is not added to any page address.
The official record
This page reproduces the campaign as filed with NHTSA. The NHTSA record is authoritative — if anything here differs, follow the agency.
Open campaign 26V-311 on NHTSA.gov