AutoDefect IQ

2021 Thomas Built Buses Saf-T-Liner Efx problems, complaints & recalls

0
Complaints
7
Recalls
53
Service bulletins
0
Crashes reported
0
Fires reported
0
Deaths

Safety recalls (7)

Equipment:other:labels 2024-07-24 · campaign 24V555000 · 27,494 vehicles

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2019-2022 Saf-T-Liner C2, Saf-T-Liner EFX, Saf-T-Liner HDX, Minotour DRW, 2020-2022 Saf-T-Liner C2 Jouley, and Minotour SRW school buses. The Emergency Exit Label lettering is too small and may be difficult to read. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 217, "Bus Emergency Exits and Window Retention and Release."

Risk: Emergency exit labels that are difficult to read can prevent or delay the use of the emergency exit, increasing the risk of injury.

Fix: Dealers will correct the lettering, free of charge. Owner notification letters were mailed September 5, 2024. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL918.

Structure:body:roof And Pillars 2022-10-12 · campaign 22V762000 · 17,613 vehicles

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2011-2023 Thomas Built EFX and HDX school buses. The exterior roof panel was manufactured with insufficient joint strength. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 221, "School Bus Body Joint Strength."

Risk: A school bus exterior roof panel with insufficient joint strength may separate during a crash, increasing the risk of injury.

Fix: Dealers will add additional mechanical fasteners to secure the joints, free of charge. Owner notification letters were mailed June 2, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL957.

Seats:mid/Rear Assembly 2022-07-19 · campaign 22V510000 · 1,806 vehicles

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2014-23 Thomas Built Buses HDX and 2014-22 EFX school buses equipped with 39-inch S3C seat frames and 3-point flex seatbelts. The passenger seat frames may crack and rotate from fatigue.

Risk: Cracked passenger seat frames may not adequately secure passengers in the event of a crash, increasing the risk of injury.

Fix: Dealers will secure the seat frames with brackets, free of charge. Owner notification letters were mail December 4, 2023. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL946.

Seats:critical Fasteners 2022-03-11 · campaign 22V153000 · 539 vehicles

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2023 Thomas Built Buses Saf-T-Liner EFX School Buses. The passenger seat mounting bolts may break due to improperly placed mounting that allows contact with the chassis cross member bolts. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 210, "Seat Belt Assembly Anchorage" and 222, "School Bus Passenger Seating and Crash Protection."

Risk: A seat with broken mounting bolts may not properly restrain an occupant in a crash, increasing their risk of injury.

Fix: Dealers will add a spacer to provide proper clearance between the passenger seat mounting and chassis cross member bolts, free of charge. Owner notification letters were mailed June 2, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-921.

Electrical System:alternator/Generator/Regulator 2021-11-02 · campaign 21V850000 · 1,434 vehicles

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2022 Thomas Built EFX and HDX school buses. The nut for the power cable stud on the alternator may not have been tightened properly, which can cause a loose cable connection.

Risk: A loose power cable connection may cause electrical arcing, which can increase the risk of a fire.

Fix: Dealers will inspect the alternator power cable connection and tighten it if necessary, free of charge. Owner notification letters were mailed on December 17, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL904.

Steering:critical Fasteners 2021-04-12 · campaign 21V255000 · 1,252 vehicles

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2021-2022 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner EFX, and Saf-T-Liner HDX school buses. The steering arm and tie rod bolts may have a defective seam that can fracture.

Risk: A fractured bolt may cause a loss of steering, increasing the risk of a crash.

Fix: DTNA will notify owners, and dealers will replace the tie rod arm bolts and steering arm, free of charge. The recall began on June 10, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-884.

Service Brakes, Hydraulic:foundation Components:disc:caliper 2021-01-20 · campaign 21V017000 · 6 vehicles

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2021 Thomas Built Buses Saf-T-Liner HDX and EFX school buses. On certain vehicles, one of the six brake caliper mounting bolts on the driver side steer axle may have been incorrectly tightened.

Risk: The loose bolt could result in the other caliper bolts to loosen. Insufficiently tightened bolts may not provide adequate clamping force between the brake caliper and brake anchor plate, resulting in reduced brake effectiveness, increasing the risk of a crash.

Fix: DTNA will notify owners, and dealers will inspect and repair as necessary, free of charge. The recall began March 17, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-873.

Service bulletins (53)

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 2026-07-06 · TSB-54-029-FTL · Service Bulletin/Repair Instructions

technical service bulletin for electrical wiring modifications for type dfootwell heater

Visibility/Wiper 2026-04-24 · SS 305-TBB · Other

service solution for efx ac upper bracket tbb 130987 replaced with tbb 248310

Unknown Or Other 2026-01-26 · SS 582773-TBB · Other

service solution for efx shock mount frame rail crack repair

Exterior Lighting 2025-02-05 · SS288-TBB · Other

service solution for hdx / efx front lighting replacement

Steering 2024-11-20 · SS295-TBB · Other

service solution for power steering pump tbb 61280827 replacement with tbb 246122

Engine 2024-11-11 · WI24-019 · Warranty Program/Extension

warranty information letter for detroit line or line seal, high pressure fuel injector standard repair time updates

Showing the 6 most recent of 53 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.

Other Thomas Built Buses Saf-T-Liner Efx years