2022 Triumph Bonneville Bobber

Owner complaints

What owners report most

1. Electrical system1
2. Engine1

Latest complaints

• Aug 26, 2026VA
  Electrical system · Engine
  I am experiencing a common issue with this vehicle wherein the regulator/rectifier plug begins leaking oil. This is due to the stator being completely submerged in oil in the engine and the seal on the cables breaking down over time. The oil is then able to wick up the cables and leak out of the…

  I am experiencing a common issue with this vehicle wherein the regulator/rectifier plug begins leaking oil. This is due to the stator being completely submerged in oil in the engine and the seal on the cables breaking down over time. The oil is then able to wick up the cables and leak out of the plug connecting the stator to the rectifier. As this oil drips, it falls directly into the path of the rear tire which could potentially cause a loss of traction. Triumph has yet to issue a recall on this well-documented issue affecting a large number of their bikes.

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 11011404Dealer notice advising of the introduction of the Triumph Beeline Moto II Special Edition navigation system.
• 11011144Dealer notice announcing the availability of Diagnostic software 2024-13 and dealers should begin using it immediately.
• 11011143Dealer notice advising of the possibility that the clutch cable included in the accessory kit may be the incorrect length.
• 11008179Dealer notice announcing the availability of Diagnostic software 2024-12 and dealers should begin using it immediately.
• 11006921Dealer notice announcing the availability of Diagnostic software 2024-11 and that dealers should begin using it immediately.
• 11005458Dealer notice announcing the availability of Diagnostic software 2024-10 and dealers should begin using it immediately.
• 11005456Dealer notice announcing the availability of Diagnostic software 2024-09.1 and dealers should begin using it immediately.
• 11005455Dealer notice announcing the availability of Diagnostic software 2024-09 and dealers should begin using it immediately.
• 11003732Dealer notice announcing the availability of Diagnostic software 2024-08.1 and dealers should begin using it immediately.
• 11003730Dealer notice announcing the availability of Diagnostic software 2024-08 and dealers should begin using it immediately.
• 11000794Dealer notice announcing the availability of Diagnostic software 2024-07 and dealers should begin using it immediately.
• 10253644Dealer notice announcing the availability of Diagnostic software 2024-04 and dealers should begin using it immediately.
• 10253642Dealer notice announcing the availability of Diagnostic software 2024-03 and dealers should begin using it immediately.
• 10252943Dealer notice announcing the availability of Diagnostic software 2024-02 and dealers should begin using it immediately.
• 10251740Dealer notice announcing the availability of Diagnostic software 2024-01 and dealers should begin using it immediately.
• 10249307Dealer notice announcing the availability of Diagnostic software 2023-08 and dealers should begin using it immediately.
• 10247139Dealer notice announcing the availability of Diagnostic software 2023-06 and dealers should begin using it immediately.
• 10239437Dealer notice advising of a bug notification affecting calibration download function on certain systems.
• 10239435Dealer notice announcing the availability of Diagnostic software 2023-02.1 and dealers should begin using it immediately.
• 10236782Technical Bulletin 230 provides instructions that applies to Electronic Systems Commissioning and Motorcycle Unlocking, Introduction of New Instrument Hardware, Triumph Diagnostic Tool 2023-02 Update - Calibrations Removed From Service and Encapsulated Fixings.
• 10236781Dealer notice announcing the availability of Diagnostic software 2023-02 and dealers should begin using it immediately.
• 10236780Dealer notice announcing the availability of Diagnostic software 2023-02 and dealers should begin using it immediately.
• 10236313Dealer notice announcing the availability of Diagnostic software 2023-01.3 and dealers should begin using it immediately.
• 10231157Dealer notice announcing the availability of Diagnostic software 2022-08.1 and dealers should begin using it immediately.
• 10231156Dealer notice announcing the availability of Diagnostic software 2022-08 and dealers should begin using it immediately.
• 10231153Dealer notice reminding of the new California Prop 65 regulation.
• 10231152For all motorcycles fitted with screw-on type reservoir caps, dealers are advised to ensure that the cap is correctly tightened with all reservoir elements seated correctly.
• 10231150Dealer notice announcing the availability of Diagnostic software 2022-07 and dealers should begin using it immediately.
• 10231149Technical Bulletin 225 provides instructions that applies to Triumph Diagnostic Tool 2022-07 Update - ECM Status Report Feature - Beta A, Triumph Diagnostic Tool 2022-07 Update - Introduction of New Headlight ECM Hardware, Triumph Diagnostic Tool 2022-07 Update - Calibrations Removed From Service.
• 10231148Dealer notice announcing the availability of Technical Bulletin 225.
• 10228576Dealer notice announcing the availability of Diagnostic software 2022-11.1 and dealers should begin using it immediately.
• 10228572Dealer notice announcing the availability of Diagnostic software 2022-11 and dealers should begin using it immediately.
• 10228571Dealer notice announcing the availability of Diagnostic software 2022-10 and dealers should begin using it immediately.
• 10221910Dealer notice reminding of the new California Prop 65 regulation.
• 10221909For all motorcycles fitted with screw-on type reservoir caps, dealers are advised to ensure that the cap is correctly tightened with all reservoir elements seated correctly.
• 10221906Technical Bulletin 225 provides instructions that applies to Triumph Diagnostic Tool 2022-07 Update - ECM Status Report Feature - Beta A, Triumph Diagnostic Tool 2022-07 Update - Introduction of New Headlight ECM Hardware, Triumph Diagnostic Tool 2022-07 Update - Calibrations Removed From Service.
• 10221905Dealer notice announcing the availability of Technical Bulletin 225.
• 10212877Triumph has released diagnostic software version 2022-01
• 10212876Triumph has released Technical Bulletin 222 including 8 subjects across a range of models.
• 10212078Dealer notice announcing the availability of Diagnostic software 2022-03.1 and dealers should begin using it immediately.

Every Triumph Bonneville Bobber model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.