VISIBILITY
2018 Harley-Davidson Flhtkse
Recalls, owner-reported complaints, investigations and safety data
Data refreshed
Overview
Our database contains 1 NHTSA owner-reported complaint for the 2018 Harley-Davidson Flhtkse, most frequently naming the engine category. 2 safety recalls have been issued covering this model year; and 77 manufacturer communications are on file.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Complaint activity over time
When owners filed reports about this model year
Not enough dated records to plot a meaningful trend — 1 month of data.
What owners report
Complaints grouped by the component NHTSA recorded
- Engine1100.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Safety recalls
2 campaigns cover this model year
Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.
Check a VIN on NHTSA.govPOWER TRAIN:CLUTCH ASSEMBLY
Recent owner complaints
Reports submitted to NHTSA, shown in the owner's own words
ENGINE SUDDENLY LOST POWER AND BECAME VERY HOT AFTER SUSTAINED HIGHWAY SPEEDS (75MPH), WHEN SHIFTED DOWN TO PASS ANOTHER VEHICLE. IN ADDITION TO THE LOSS OF POWER VEHICLE FUEL CONSUMPTION INCREASED DRAMATICALLY. DEALER FOUND ENGINE EXPERIENCED ENGINE OIL SUMPING, WHEREBY THE ENGINE OIL PUMP WAS NOT RETURNING SUFFICIENT OIL TO THE OIL TANK. EXCESS OIL WAS COLLECTING IN THE BOTTOM OF THE CRANK CASE. THIS OIL WOULD BUILD UP TO THE POINT THAT THE CRANK WOULD COME INTO CONTACT WITH THE EXCESS AND CAUSE FOAMING. THE RESULTING LACK OF LUBRICATION HAS CAUSED SIGNIFICANT INTERNAL ENGINE DAMAGE. HARLEY DAVIDSON HAS KNOWN ABOUT THIS PROBLEM SINCE THE INTRODUCTION OF THEIR 2017 MODELS. THEY HAVE COME OUT WITH NUMEROUS DESIGN CHANGES TO THE OIL PUMP, HOWEVER, THE SUMPING HAS CONTINUED THROUGH THE 2017, 2018, AND 2019 MODEL YEARS. IN 2020 THEY HAVE NOW COME OUT WITH YET ANOTHER PUMP DESIGN WHICH THEY CONTEND WILL FIX THE PROBLEM. IN THE MEAN TIME HARLEY HAS NOT CONDUCTED A RECALL ON THE PRIOR MODELS, LEAVING THE ENTIRE 3 YEARS OF PRODUCTION OF TOURING MODELS SUBJECT TO LOSS OF POWER DURING CRITICAL PERIODS, SUCH AS ACCELERATING TO PASS ANOTHER VEHICLE. HARLEY RECOMMENDS THAT THE OIL PUMP BE REPLACED AT OWNER COST IF ENGINE UPGRADES ARE ADDED, BUT THEY WILL NOT REPLACE THE PUMP AT THE COMPANY'S EXPENSE UNTIL INTERNAL ENGINE DAMAGE OCCURS. IT APPEARS THAT THEY ARE ATTEMPTING TO WAIT OUT FOR THE EXPIRATION OF THE MANUFACTURERS ORIGINAL 2 YEAR WARRANTY.
- NHTSA ID
- 11310386
- Incident
- Jan 24, 2020
- Mileage
- 8,900 mi
Manufacturer communications
A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.
ELECTRICAL SYSTEM; ENGINE; POWER TRAIN; VEHICLE SPEED CONTROL; WHEELS
SERVICE BULLETIN M1490 (V 26.8.3): 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). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). Version Version 26.8.3, Release Date: Week of July 24, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features - Harley-Davidson: 2023-2024 Touring: Updated Electronic Control Module (ECM) calibration offerings. LiveWire: S2DM/MH/AP: Calibration bundle 10.2.28: Telematic Control Unit (TCU) reflash updates. Change: Vehicle Setup: Body Control Module (BCM) – Tire Pressure Monitoring System (TPMS) Replacement: Correct issue where tire size selections were not available. System Info – Auxiliary Load Controller (ALC): Added Bike configuration field. Data Items – Trike ECM: Improved display of Gear Position when in reverse. Amp – Added support for (Part No. 76001619).
ELECTRICAL SYSTEM; ENGINE; EXTERIOR LIGHTING; FUEL/PROPULSION SYSTEM
SERVICE BULLETIN M1490 (V 26.7.3): 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). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). Version 26.7.3. Release Date:• Week of June 11, 2026. NOTE Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions.
ELECTRICAL SYSTEM; ENGINE; FUEL/PROPULSION SYSTEM; POWER TRAIN; VEHICLE SPEED CONTROL
SERVICE BULLETIN M1490 (V 26.6.2): 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). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). Version 26.6.2. Release Date: Week of April 22, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features: 2026 Police • Vehicle Setup: Civilianize; LiveWire • S2: Del Mar (S2DM), Mulholland (S2MH), Alpinista (S2AP) - Calibration bundle 10.2.20: Vehicle Supervisory Controller (VSC) and Onboard Charger (OBC) reflash updates. Changes: 2026 Trike • Update “Reverse Lockout Reason” resize column.
ELECTRICAL SYSTEM; ENGINE; FUEL/PROPULSION SYSTEM; VEHICLE SPEED CONTROL
SERVICE BULLETIN M1490 (V 26.5.2): 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). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). Version 26.5.2 Release Date: Week of March 30, 2026. NOTE Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features. 2024: Pan America (RA1250), Pan America Special (RA1250S), CVO Pan America (RA1250SE) • Updated Body Control Module (BCM) reflash calibration. 2024-2026: CVO Road Glide ST (FLTRXSTSE) • Updated Electronic Control Module (ECM) reflash calibration. 2026: CVO Street Glide ST (FLHXSTSE) • Updated ECM reflash calibration. Changes. 2026 Trike • Update “Reverse Lockout Reason” to support new values, • “Vehicle setup: Gear Indicator Calibration” – improve operation. 2025-2026 Softail • Update reflash for Softail Speedometer (SPDO) – enable operation of auxiliary lamp telltale. LiveWire S2 • Provide reflash support for Vehicle Supervisory Controller (VSC) hardware (Part No. 41001756RE).
ENGINE
SERVICE BULLETIN M1679: AFTERMARKET EXHAUST HEADER DEBRIS. PURPOSE: Initial release. This bulletin informs dealers that Harley-Davidson has identified instances of premature engine failure due to abrasive particle wear, specifically from debris inside new aftermarket exhaust headers. Recent evaluations have identified that certain newly manufactured exhaust headers may contain residual hard particles that, if not removed prior to installation, can migrate through the engine system and cause accelerated component wear or severe mechanical damage.
ELECTRICAL SYSTEM
SERVICE BULLETIN M1490 (V 26.4.3): 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). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). Version 26.4.3 Release Date: Week of February 25, 2026. NOTE: Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). Refer to bulletin M1713 for instructions. New Features: Support for 2026 LiveWire Vehicles, LiveWire S2 Vehicle Status: Display notification when vehicle has unconfigured Electro Hydraulic Control Unit (EHCU) module, Vehicle Setup: New operation to support Anti-lock Braking System (ABS) / EHCU Correction, Reflash: Enabled EHCU calibrations for vehicles previously ineligible for update, requiring ABS / EHCU Correction to be performed. 2021–2025 Pan America (RA1250), Pan America S (RA1250S), Pan America ST (RA1250ST), CVO Pan America (RA1250SE): Reflash – Updated Electronic Control Module (ECM) software calibration to improve quick shifter performance. Changes: Infotainment Control Unit (IFCU) Customization – Correct issue where speakers were improperly configured.
Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.
Compare model years
Complaint and recall counts across every year of this model
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.