# Service bulletins for the 2026 Triumph Speed 400

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.

18 bulletins from NHTSA, as of 2026-10-19.

- [COM2\_35786](/bulletins/11037983.md), 2026-10-05, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Daignostic software and dealers should begin using it immediately.
- [COM1\-35109](/bulletins/11035862.md), 2026-08-05, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Triumph Diagnostic Tool 2026\-07 and dealers should begin using it immediately.
- [COM2 \- 34886](/bulletins/11034475.md), 2026-07-03, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Triumph Diagnostic Tool 2026\-06.1 and dealers should begin using it immediately.
- [TB264](/bulletins/11033614.md), 2026-06-05, Service bulletin: UNKNOWN OR OTHER. Technical Bulletin 264 provides instructions that relates to: Triumph Diagnostic Tool \- New Motorcycle Connection and Diagnostics Workflow, Triumph Diagnostic Tool \- End of Support for Microsoft Windows 10.
- [COM6 \- 34491](/bulletins/11033612.md), 2026-06-05, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Triumph Diagnostic Tool version 2026\-06 and dealers should begin using it immediately.
- [COM5 \- 34490](/bulletins/11033611.md), 2026-06-05, Service bulletin: UNKNOWN OR OTHER. Dealer notice announcing the availability of Technical Bulletin 264.
- [COM4 \- 34435](/bulletins/11033609.md), 2026-06-05, Service bulletin: ELECTRICAL SYSTEM. Dealer notice advising the availalbility of TDT version 2026\-05.2 which resolves the ABS as Not Connected issues in SmartScan, on Tracker 400 \& Thruxton 400 models.
- [COM02 \- 34238](/bulletins/11032303.md), 2026-05-06, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2026\-05.1 and dealers should begin using it immediately.
- [COM01 \- 34227](/bulletins/11032301.md), 2026-05-06, Service bulletin: UNKNOWN OR OTHER. Dealer notice reminding of Motorcycle Cleaning, prohibited use of High\-Pressure \& Steam Cleaning equipment.
- [COM01 \- 33784](/bulletins/11030550.md), 2026-04-02, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2026\-04 and dealers should begin using it immediately.
- [COM1 \- 33480](/bulletins/11029561.md), 2026-03-04, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2026\-03 and dealers should begin using it immediately.
- [COM2 \- 33233](/bulletins/11028327.md), 2026-02-05, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2026\-02 and dealers should begin using it immediately.
- [COM1 \- 32976](/bulletins/11028326.md), 2026-02-05, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2026\-01 and dealers should begin using it immediately.
- [COM2 \- 32716](/bulletins/11026934.md), 2026-01-05, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Technical Bulletin 255.
- [COM1 \- 32684](/bulletins/11026933.md), 2026-01-05, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2025\-13 and dealers should begin using it immediately.
- [COM3 \- 32486](/bulletins/11026082.md), 2025-12-03, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2025\-12.1 and dealers should begin using it immediately.
- [COM2 \- 32455](/bulletins/11026081.md), 2025-12-03, Service bulletin: ELECTRICAL SYSTEM. Dealer notice announcing the availability of Diagnostic software 2025\-12 and dealers should begin using it immediately.
- [TB255](/bulletins/11026077.md), 2025-12-03, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Technical Bulletin 255 provides instructions that applies to: Triumph Diagnostic Tool \- Addition of Pinpoint Test Links to Smart Scan DTC Screen \& Triumph Diagnostic Tool \- Removal of IUPR Uploader Application

JSON: [/v1/vehicles/2026_triumph_speed-400/bulletins](/v1/vehicles/2026_triumph_speed-400/bulletins)

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