2021 Temsa Ts45 problems, complaints & recalls
Safety recalls (2)
Electrical System:wiring 2025-04-29 · campaign 25V279000 · 594 vehicles
Defect: Temsa is recalling certain 2021-2025 TS30, TS35, and 2021-2026 TS45 buses equipped with a Mux5-B multiplex. The temporary bus stop valve may activate unintentionally and apply the brakes, causing them to overheat.
Risk: Brakes that overheat can increase the risk of a fire.
Fix: Temsa will inspect the multiplex, update the software, and repair the wiring harness as necessary, free of charge. Owner notification letters were mailed June 11, 2025. Owners may contact Temsa customer service at 1-833-628-3672.
Fuel System, Diesel:fuel Injection System:fuel Rail 2022-02-24 · campaign 22V106000 · 7 vehicles
Defect: Temsa (Temsa) is recalling certain 2020 TS45 motorcoaches equipped with certain Cummins X12 diesel engines. The fuel tubes between the fuel rail and the injectors for cylinders four, five, and six may fatigue and crack, which can result in a high pressure fuel leak.
Risk: A high pressure fuel leak in the presence of an ignition source can increase the risk of a fire.
Fix: 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, free of charge. The manufacturer has not yet provided a schedule for recall notification. Owners may contact Temsa's customer service at 1-833-628-3672.
Service bulletins (13)
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.
Unknown Or Other 2026-09-28 · TS45-FM-2602 · Service Bulletin/Repair Instructions
turbo intake pipe replace
Unknown Or Other 2025-05-28 · TS45-SR-2502 · Service Bulletin/Repair Instructions
ts45 mux units pin changing and diode checking bulletin
Electrical System:software 2024-03-16 · TS45-FM-2401 · Service Bulletin/Repair Instructions
new kibes rt updated software
Equipment 2023-10-22 · TS45-FM-2303 · Service Bulletin/Repair Instructions
service bulletin for torque control
Electrical System 2023-05-15 · TS45-FC-2206 · Service Bulletin/Repair Instructions
jump start cable insulation improvement
Equipment 2023-05-03 · TS45-FC-2201 · Service Bulletin/Repair Instructions
ts45 stairs insulation improvement
Showing the 6 most recent of 13 bulletins. Search all of them free at nhtsa.gov.
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.