2025 Bollinger Motors B4 problems, complaints & recalls
Safety recalls (1)
Electrical System:propulsion System:traction Battery 2025-04-01 · campaign 25V204000 · 17 vehicles
Defect: Bollinger Motors, Inc. (Bollinger Motors) is recalling certain 2025 B4 trucks. The high voltage battery pack may be improperly sealed and allow liquid to enter the battery.
Risk: Liquid intrusion into a battery pack can cause a loss of electrical isolation or short circuit, increasing the risk of a fire or shock hazard. In addition, the detection of a battery fault can cause a loss of drive power, increasing the risk of a crash.
Fix: Bollinger Motors will work with Our Next Energy to inspect and repair the battery packs as necessary, free of charge. Owners can contact Bolling Motors at 586-785-7351.
Service bulletins (3)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Power Train 2025-07-11 · TSB-725-01 · Service Bulletin/Repair Instructions
service action for removing can bus resistors, cleaning & preventing dc to dc converter 12-volt cable corrosion, improving the location and visibility of the first responders cut loop labels, and improving the motor control unit (mcu) high voltage cable dual clamp cable-ties locations.
Power Train 2025-06-23 · TSB-0625-02 · Service Bulletin/Repair Instructions
the updated vcu software includes enhancements for 12v and high-voltage battery conditioning, as well as resolving issues with incorrectly stored faults. the revised tcu software enhances the thermal management system and eliminates erroneously stored faults. the updated ota software enables tcu and
Power Train 2025-04-02 · TSB-0425-01 · Service Bulletin/Repair Instructions
bulletin title: update the vehicle control unit (vcu), thermal control unit (tcu), and telematics module unit (tmu) software to the latest version. symptom: the existing vcu and tcu software may cause various fault codes to be stored in the vehicle's fault memory. the tmu does not currently suppor
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.