2018 Harley-Davidson Flfb problems, complaints & recalls
Most-reported problem areas: Vehicle Speed Control (1) · Fuel/Propulsion System (1)
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (62)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-09-17 · M1490 · Service Bulletin/Repair Instructions
service bulletin m1490 (v 26.9.4): 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). new software update. note: the tech
Unknown Or Other 2026-08-14 · M1733 · Service Bulletin/Repair Instructions
service bulletin m1733: cosmetic cylinder staining (all milwaukee-eight models). purpose: initial release. this bulletin informs dealers that cosmetic staining or etching on the inside of the cylinder bore does not have an impact on engine performance, oil consumption, or overall functionality. this
Wheels 2026-07-25 · M1490 · Service Bulletin/Repair Instructions
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 dat
Fuel/Propulsion System 2026-06-11 · M1490 · Service Bulletin/Repair Instructions
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
Vehicle Speed Control 2026-04-24 · M1490 · Service Bulletin/Repair Instructions
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
Vehicle Speed Control 2026-03-31 · M1490 · Service Bulletin/Repair Instructions
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
Showing the 6 most recent of 62 bulletins. Search all of them free at nhtsa.gov.
What owners report
2019-07-14 · Unknown Or Other · 1,300 mi“speedometer fogs over with condensation, when left in the sun. it is impossible toread any of the digital functions when this occurs. harley replaced the speedo two days ago and it did it again. apparently harley is aware of the issue and has not corrected it. they simply replace it with another one th0at they know may also be defective. this is a…”
2018-12-13 · Vehicle Speed Control · 84 mi · 💥 crash“tl* the contact owns a 2018 harley-davidson fat boy (flfb). while driving 20 mph, the vehicle accelerated when the contact switched gears to downshift and brake. as a result, the contact crashed into another vehicle. the contact shattered his femur and injured his left knee. medical attention was received. a police report was not filed. the vehicle…”
2018-08-20 · Fuel/Propulsion System“bought brand new harley davidson 2018 flfb had a bad fuel leak coming from vent tube took to dealer and they didn't know how to fux. they called harley they told them to put new fuel pump in and it worked for two weeks problem is now back and they say that a fuel leak is normal and they don't have a fix for it yet. afraid to ride it i'm affraid th…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.