2010 Harley-Davidson Flhtk problems & reliability
29 owner complaints filed with NHTSA for the 2010 Harley-Davidson Flhtk, 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 → | 15 | 52% |
| Wheels | 6 | 21% |
| Power Train | 4 | 14% |
| Steering | 4 | 14% |
| Electrical System | 2 | 7% |
| Engine | 1 | 3% |
| Equipment | 1 | 3% |
| Fuel/propulsion System | 1 | 3% |
| Service Brakes, Hydraulic | 1 | 3% |
| Suspension | 1 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 11 reported components →Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Among the 23 complaints that included a usable odometer reading, the median reported incident mileage was 23,000 miles (middle 50% between 17,658 and 37,312 miles).
Complaints by incident year
What owners report
“I'm experiencing issues with my tbw. Check engine light came on for the first time in november at the end of a charity ride and I thought perhaps the pack ride caused it to overheat, after shutting the bike off it went away briefly. Did some troubleshooting online and discovered that the plugs on the ecm and tb were…”
Electrical System · filed Mar 16, 2021
“I recently took my motorcycle in for the recall by harley davidson. Even after having the recall service performed, on a sudden brake, there is a very distinct pull on the rear brake. This occurs at 35 mph, 55 mph, and 65 mph.”
Service Brakes · filed Apr 2, 2019
“While riding and coming to a stop the front brake level would not move and I had no front brakes. Emergency stop utilizing the rear brakes was necessary to avoid proceeding into the intersection. It has been determined that the abs hydraulic modulator assembly (part number 48343-09) had failed. There was no abs light…”
Service Brakes · filed Apr 3, 2018
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
19 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2010 Harley-Davidson Flhtk. 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 Flhtk 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 Flhtk?
- · 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.