2010 Harley-Davidson FLHX problems & reliability
24 owner complaints filed with NHTSA for the 2010 Harley-Davidson FLHX, alongside 3 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
1 complaint report injuries (1 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Service Brakes → | 12 | 50% |
| Electrical System | 6 | 25% |
| Engine | 4 | 17% |
| Vehicle Speed Control | 4 | 17% |
| Fuel/propulsion System | 2 | 8% |
| Exterior Lighting | 1 | 4% |
| Fuel System, Gasoline | 1 | 4% |
| Power Train | 1 | 4% |
| Steering | 1 | 4% |
| Wheels | 1 | 4% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Among the 21 complaints that included a usable odometer reading, the median reported incident mileage was 23,000 miles (middle 50% between 10,550 and 30,650 miles).
Complaints by incident year
What owners report
“Front Brakes do not work. I can not operate brake lever will not pull in, brakes have been service to manufacture recommendations, Rear brakes work, the front brake has failed in ABS unit and failed not working.”
Service Brakes · filed Sep 2, 2024
“The throttle by wire connector hooks in behind the breather. Due to the hard turn of the connector going into the plug it bends the wires resulting in them breaking over time. This causes the motorcycle to lose throttle and go into limp mode causing me to very closely come to getting run over on the highway. It…”
Fuel/propulsion System · filed Dec 9, 2020
“Tl* the contact owns a 2010 harley-davidson street glide (flhx). The contact stated that after the brake fluid was purged, the brake light illuminated. The vehicle was taken to bumpus harley-davidson of jackson (326 carriage house drive, jackson, tn 38305, (731) 248-0091) where it was determined that the brake fluid…”
Service Brakes · filed Jun 11, 2019
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Sudden Brake Failure - Motorcycle
Preliminary Evaluation PE16009 · opened Jul 6, 2016 · closed Apr 23, 2018 · led to recall 18V076000
Technical service bulletins
21 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2010 Harley-Davidson FLHX. The 10 most recent:
SERVICE BULLETIN M1490 (V 26.0.2): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II)…
M1490 · Service Bulletin/Repair Instructions · issued Nov 18, 2025
SERVICE BULLETIN M1391A (REVU): MIDTRONICS GRX-3110 AND DCA-8000 SOFTWARE. PURPORSE: Revision U. The purpose of this bulletin is to inform the dealer network that a software update to the GRX-3110 and DCA-8000 is now…
M1391A · Service Bulletin/Repair Instructions · issued Oct 28, 2025
GENUINE MOTOR PARTS AND ACCESSORIES BULLETIN PAB1171 (REV B): SOFTWARE UPDATE FOR SCREAMIN EAGLE PRO STREET TUNER. PURPOSE: Revision B. Updated: Summary. The App has returned to the Apple App Store. This bulletin…
PAB1171 · Service Bulletin/Repair Instructions · issued Oct 25, 2025
SERVICE BULLETIN M1490 (V 25.8.9): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II)…
M1490 · Service Bulletin/Repair Instructions · issued Sep 6, 2025
SERVICE BULLETIN M1490 (V 25.8.7): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II)…
M1490 · Service Bulletin/Repair Instructions · issued Aug 26, 2025
SERVICE BULLETIN M1391A (REV T): MIDTRONICS GRX-3110 AND DCA-8000 SOFTWARE. PURPORSE: Revision T. The purpose of this bulletin is to inform the dealer network that a software update to the GRX-3110 and DCA-8000 is now…
M1391A · Service Bulletin/Repair Instructions · issued Aug 26, 2025
SERVICE BULLETIN M1684: MARKET SPECIFIC BATTERY INTRODUCTION. PURPOSE: Initial Release. This bulletin informs dealers of the availability of new batteries for new Original Equipment (OE) vehicle production and in the…
M1684 · Service Bulletin/Repair Instructions · issued Aug 16, 2025
SERVICE BULLETIN M1650: MILWAUKEE EIGHT AND TWIN CAM CAMSHAFT DRIVE GEAR RETENTION KIT CHANGES. PURPOSE: This bulletin informs dealers that changes have been made to the Camshaft Drive Gear Retention Kit and service…
M1650 · Service Bulletin/Repair Instructions · issued Jan 24, 2025
SERVICE BULLETIN M1555 (REV E): BATTERY WARRANTY GUIDELINES. PURPOSE: Revision E. Added: Added procedures for the DCA-8000 E Battery Tester.* Updated: All sections. This bulletin informs the dealership network that…
M1555 · Warranty Program/Extension · issued Sep 12, 2024
SERVICE BULLETIN M1490 (V 24.8.8): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II). DIGITAL…
M1490 · Service Bulletin/Repair Instructions · issued Aug 8, 2024
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2010 Harley-Davidson FLHX has 3 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2010 Harley-Davidson FLHX?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Among complaints with usable mileage, the median reported incident mileage was 23,000 miles. This does not predict when a particular vehicle will develop a problem.