Vehicle report

2024 TRIUMPH SPEED 400

Service bulletins

69 bulletins

Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.

COM1-35109

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Triumph Diagnostic Tool 2026-07 and dealers should begin using it immediately.

COM2 - 34886

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Triumph Diagnostic Tool 2026-06.1 and dealers should begin using it immediately.

COM5 - 34490

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Technical Bulletin 264.

COM6 - 34491

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Triumph Diagnostic Tool version 2026-06 and dealers should begin using it immediately.

TB264

Service Bulletin/Repair Instructions

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.

COM4 - 34435

Service Bulletin/Repair Instructions

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

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2026-05.1 and dealers should begin using it immediately.

COM01 - 34227

Service Bulletin/Repair Instructions

Dealer notice reminding of Motorcycle Cleaning, prohibited use of High-Pressure & Steam Cleaning equipment.

COM01 - 33784

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2026-04 and dealers should begin using it immediately.

COM1 - 33480

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2026-03 and dealers should begin using it immediately.

COM2 - 33233

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2026-02 and dealers should begin using it immediately.

COM1 - 32976

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2026-01 and dealers should begin using it immediately.

COM3 - 32748

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Service Bulletin 638.

SB638

Service Bulletin/Repair Instructions

Service Bulletin 638 advises dealers to measure and replace the camshaft drive chain tensioner.

COM2 - 32716

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Technical Bulletin 255.

COM1 - 32684

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-13 and dealers should begin using it immediately.

COM3 - 32486

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-12.1 and dealers should begin using it immediately.

COM2 - 32455

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-12 and dealers should begin using it immediately.

TB255

Service Bulletin/Repair Instructions

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

COM1 - 31796

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-11 and dealers should begin using it immediately.

31343

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-10 and dealers should begin using it immediately.

TB252

Service Bulletin/Repair Instructions

Technical Bulletin 252 provides instructions that applies to: Triumph Diagnostic Tool - ABS Calibration Update and Smart Scan ABS Calibration Version Check Improvement, Triumph Diagnostic Tool - Replacement ABS Modulator Setup - Change to ABS Variant Code Configuration Process

COM2 - 31089

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-09.1 and dealers should begin using it immediately.

COM1 - 31039

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-09 and dealers should begin using it immediately.

COM5 - 30840

Service Bulletin/Repair Instructions

Dealer notice advising the availability of Diagnostic software version 2025-08 and dealers should begin using it immediately.

COM3 - 30807

Service Bulletin/Repair Instructions

Dealer notice advising of Dealer TOL platform impacting the latest Diagnostic software download - logging off.

COM2 - 30768

Service Bulletin/Repair Instructions

Dealer notice advising the availability of Diagnostic software version 2025-07 and dealers should begin using it immediately.

COM1 - 30678

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Technical Bulletin 250.

TB250

Service Bulletin/Repair Instructions

Technical Bulletin 250 provides instructions that applies to the Triumph Diagnostic Tool Update - Smart Scan VIN Query and VIN Data Page, Triumph Diagnostic Tool - Engine ECM Diagnostics - Write VIN Function, Electronic Control Modules (ECMs) Must Not Be Swapped Between Motorcycles.

COM9 - 30576

Service Bulletin/Repair Instructions

Dealer notice advising the availability of Diagnostic software version 2025-06 and dealers should begin using it immediately.

COM7 - 30524

Service Bulletin/Repair Instructions

Dealer notice advising of some customer complaints relating to condensation in the instrument pack and headlamp.

COM6 - 30499

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software version 2025-05 and dealers should begin using it immediately.

COM2 - 30402

Service Bulletin/Repair Instructions

Dealer notice advising of the Chain Servicing Tool that will be auto-issued on 09th April 2025.

COM6_30309

Service Bulletin/Repair Instructions

Dealer notice advising that the new Autoscan feature within the SmartScan function has now been enabled with the release of TDT 2025-04.1 and that instructions are detailed in Technical Bulletin 249.

TB249

Service Bulletin/Repair Instructions

Technical Bulletin 249 provides instructions that applies to the Triumph Diagnostic Tool - New Smart Scan Download Feature - Calibration Option Selection and the Triumph Diagnostic Tool - New Smart Scan Feature - Autoscan.

COM5_30212

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-04.1 and that dealers should begin using it immediately. This version includes a fix for the hardware part number-based calibration download issue.

COM3_30112

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-04 and dealers should begin using it immediately.

COM5-30003

Service Bulletin/Repair Instructions

Dealer notice advising that the latest software release has reintroduced an issue affecting key paiing

COM3-29956

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-03 and that dealers should begin using it immediately.

COM1-29817

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-02 and that dealers should begin using it immediately.

COM1-29689

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2025-01 and that dealers should begin using it immediately.

TU1-29653

Service Bulletin/Repair Instructions

Technical update advising dealers on investigation findings of the fuel cap seal that is leaving a residue.

COM3_29478

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-14 and that dealers should begin using it immediately.

SMTTB235

Service Bulletin/Repair Instructions

Technical Bulletin 235 provides instructions that applies to Calibration Downloading, Replacement Engine ECM Setup, Replacement ABS Modulator Setup, Replacement Instrument Setup, Replacement Immobiliser and Lock Set Setup.

SMTTB236

Service Bulletin/Repair Instructions

Technical Bulletin 236 provides instructions that applies to Triumph Diagnostic Tool - Autoscan feature that doesn't currently support the given models.

COM8-29236

Service Bulletin/Repair Instructions

Dealer notice providing an update of a temporary fix to allow pairing replacement keys.

COM5-29153

Service Bulletin/Repair Instructions

Dealer notice advising of an issue affecting the key pairing functionality of TDT.

COM3-29131

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-13 and dealers should begin using it immediately.

COM1-29010

Other

Dealer notice advising of the introduction of the Triumph Beeline Moto II Special Edition navigation system.

COM2-28473

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-12 and dealers should begin using it immediately.

COM1-28447

Service Bulletin/Repair Instructions

Dealer notice advising of incorrect roll bag part number.

COM1-28369

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-11 and that dealers should begin using it immediately.

COM3-28197

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-10 and dealers should begin using it immediately.

COM2-28140

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-09.1 and dealers should begin using it immediately.

COM1-28064

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-09 and dealers should begin using it immediately.

COM2-27933

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-08.1 and dealers should begin using it immediately.

COM1-27828

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-08 and dealers should begin using it immediately.

COM8

Service Bulletin/Repair Instructions

Dealer notice providing an update and availability on the TDT 2024-07 software roll back that will resolve the MIL issue.

COM7-TDT

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-07 and dealers should begin using it immediately.

COM5

Service Bulletin/Repair Instructions

Dealer notice advising dealers to revert back to the previous immobiliser software, whilst investigation is underway on the immobiliser light.

COM4

Service Bulletin/Repair Instructions

Notice advising dealers of DTC U0167 being flagged following the latest immobiliser calibration update.

SMT-COM-01

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-03 and dealers should begin using it immediately.

SMT-TB239

Service Bulletin/Repair Instructions

Technical Bulletin 239 provides instructions that applies to Triumph Diagnostic Tool - Autoscan Support.

SMT-COM-02

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-04 and dealers should begin using it immediately.

PartsA

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Technical Bulletin 235 & 236.

Parts

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-02 and dealers should begin using it immediately.

SMTCOM01

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2024-01 and dealers should begin using it immediately.

SMT-COM03

Service Bulletin/Repair Instructions

Dealer notice announcing the availability of Diagnostic software 2023-08 and dealers should begin using it immediately.

SMT-TB234

Service Bulletin/Repair Instructions

Technical Bulletin 234 provides instructions that applies to Electronic Systems Commissioning and Motorcycle Unlocking.

Reading this report

Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.