Service bulletin TSB54-377-FTL
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11027199 |
| Published by NHTSA | 2026-01-07 |
| Manufacturer's number | TSB54-377-FTL |
| Manufacturer's date | 2025-12-01 |
| NHTSA component | ENGINE |
NHTSA's summary
Technical Service Bulletin Low Coolant Sensor
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine
| FREIGHTLINER 108SD | 2022, 2023, 2024, 2025, 2026 |
|---|---|
| FREIGHTLINER 114SD | 2022, 2023, 2024, 2025, 2026 |
| FREIGHTLINER BUSINESS CLASS M2 | 2022 to 2026 |
| FREIGHTLINER CASCADIA | 2022, 2023, 2024, 2025, 2026 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 23V737000 | 2023-11-02. ENGINE |
|---|---|
| 2022413 | 2022-07-29. Engine |
| 22V554000 | 2022-07-29. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM) |
| 21V715000 | 2021-09-15. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM |
| 21V073000 | 2021-02-12. ENGINE |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| CXA 07_25_F1011,F1015 Lbl | 2026-08-05. Other. CX Advocate for Lost/Damaged Replacement F1011/F1015 Labels |
|---|---|
| ICI26-007 | 2026-05-02. Other. Important Campaign Information for SF735 - Campaign Suspended |
| CXA 03_26_Surge Tank | 2026-04-02. Other. CX Advocate for discolored coolant surge tanks (24CSA-20) |
| CXA 03_26_SSR | 2026-04-02. Other. CX Advocate for error generates when SSR is moved into an engine brake position 1,2,3 (TSB-26-058-FTL, TSB-26-009-WST) |
| CXA 03_26_DPF Ash | 2026-04-02. Other. CX Advocate for Gen 5 521133/13 DPF Ash Mileage Mismatch |
| SF735-DLR LTR | 2026-04-02. Service campaign. Revised Field Service campaign for Adaptive Cruise Control (ACC): Cummins Medium Duty Engines |
| SF735-Bulletin | 2026-04-02. Service campaign. Revised Field Service campaign for Adaptive Cruise Control (ACC): Cummins Medium Duty Engines |
| TitanX Extension | 2026-03-04. Warranty extension. Standard Warranty Extension for vehicles with TitanX Radiators |
| CAL FTL-20-008 | 2026-02-03. Other. Customer Advisory Letter for Variable Speed Water Pump Remains Fully Engaged |
| FleetCom_Heater Core | 2026-01-08. Other. Fleet Communications for Heater Core Plugging |