2006 Harley-Davidson Flhtcui problems, complaints & recalls
Most-reported problem areas: Tires (2) · Service Brakes, Hydraulic:foundation Components:disc:pads (2) · Service Brakes, Hydraulic (2)
🧭 Reliability snapshot
Compared against other Harley-Davidson Flhtcui model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (7)
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 2025-08-16 · M1684 · Service Bulletin/Repair Instructions
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 parts and accessories (p&a) catalog. availability of the new absorbed glass mat (ag
Unknown Or Other 2024-09-12 · M1555 · Warranty Program/Extension
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 harley-davidson has provided guidelines for battery warranty.
Unknown Or Other 2024-08-08 · M1490 · Service Bulletin/Repair Instructions
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 technician ii (part number: hd-48650). version 24.8.8. release date: week of august 5
Unknown Or Other 2024-07-10 · PAB1158 · Service Bulletin/Repair Instructions
genuine motor parts and motor accessories bulletin pab1158: oil filter packaging and case quantity update. purpose: to inform dealerships that harley-davidson has made updates to oil filters including new part numbers, packaging design, and bulk case quantity changes.
Unknown Or Other 2024-05-01 · M1490 · Service Bulletin/Repair Instructions
service bulletin m1490 (v 24.6.4): 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). version 24.6.4. release date: week
Vehicle Speed Control 2024-04-04 · M1612 · Service Bulletin/Repair Instructions
service bulletin m1612 (rev a): milwaukee-eight and twin cam transmission gear packs. purpose: revision. update: notes for table 3 and 4. * updated: part numbers. this bulletin informs dealers that all: twin cam gear packs on cvo, dyna, police, softail, touring & trike models and milwaukee-eight ge
Showing the 6 most recent of 7 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-05-11 · Service Brakes“rear brakes. can place rider in extreme danger it the event of a crash when losing rear brakes due to a hole in the brake line caused by friction against the clutch cable in factory routing of the line and cable. i called harley davidson customer service to see is i could get help to resolve my issue due the fact that this issue is the same basic p…”
2019-02-21 · Electrical System: Instrument Cluster/Panel“2006 harley davidson. consumer writes in regards to incorrect mileage on motorcycle. *ld *tr…”
2010-09-20 · Service Brakes, Hydraulic · 8,257 mi“my 2006 harley davidson ultra classic front brake line failed. the motorcycle has 8,2xx miles. i squeezed the front brake lever as i was starting the bike and felt the lever fully depress. i saw brake fluid squirt on the bike and onto my leg. my mechanic says he has heard of this problem from other mechanics. i am the original owner. *tr…”
2010-03-04 · Engine And Engine Cooling · 42,000 mi“failure has not occured on my bike however numerous reports from others and dealer recommendation to have cam chain tensioners checked because as i was told, it is not a question of whether but when they will fail. failure results in immediate loss of power which under highway conditions, for example would lead to deceleration, as in passing or m…”
2010-01-21 · Structure:body · 10,461 mi“2006 harley davidson flhtcui. broken upper fairing mounts. failure of these mounts (breaking at one or both ends on both left and right side of inner fairing) results in catastrophic vibration causing loss of control. i have just experienced this personally and i can attest that hundreds of others involving several other year models have been repor…”
2008-08-12 · Service Brakes, Hydraulic · 31,000 mi“brake line was found to be chaffed from rubbing on the clutch line which is bundle together. this resulted in a approximately 1/8" hole in the brake line. found when changing the brakes. *tr…”
2008-07-15 · Engine And Engine Cooling:exhaust System · 29,000 mi“inner cam bearing failed on my 2006 harley davidson ultra classic. the motor had to be completely rebuilt including new bearings, oil pump, camshafts. cam cover and all gaskets. *tr…”
2008-02-28 · Service Brakes, Hydraulic:foundation Components:disc:pads · 28,140 mi“tl*the contact owns a 2006 harley davidson flhtcui. the contact stated that the lining of the brake pad fell off after it rusted. while driving 4 mph, the front brake lever extended completely down and the contact had to use the rear brakes to stop. the contact took the vehicle to a repair shop and had them replace the shoes immediately after th…”
2007-08-09 · Tires · 8,017 mi“i am writing about a brand new dunlop d402 mu85b16 sw tire i bought for my 2006 (harley davidson) flhtcui in preparation for a nearly 3700 mile road trip. the trip went just fine, for about the first 450 miles. at that point the tire, which had less than 500 miles total use, self- destructive. the tire tread separated from the inner core ( photo…”
2006-12-08 · Service Brakes, Hydraulic:foundation Components:disc:pads · 12,000 mi“i was preparing to stop at a traffic light on my 2006 harley davidson flhtcui when my front brake lever lost all feeling and moved to the handle bar. further investigation revealed the brake material had separated from the backing plate. now, i have had a second brake pad, on the rear brake do the same with the brake material separating from the ba…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.