2011 Harley-Davidson Flhtcu

The Office of Defects Investigation (ODI) opened this investigation in July 2016 based on forty-three (43) Vehicle Owner Questionnaires (VOQ).During the course of this investigation ODI received a total of 145 VOQs related to the alleged defect on the subject motorcycles.Owners allege they experience a sudden and complete loss of brakes on one or both wheels.To better understand the cause of the braking issue on the subject motorcycles, ODI requested NHTSA's Vehicle Research and Test Center (VRTC) conduct inspections and testing of affected vehicle braking systems.Through its work, VRTC determined that deposits were forming on the valves in the Hydraulic Control Unit (HCU) of the Antilock Braking System (ABS). These deposits could prevent the proper function of the HCU and render the brakes ineffective.To understand why deposits were forming in the HCU, Harley Davidson completed an analysis of the Dow 460 brake fluid used as original equipment on the subject motorcycles and determined that it had stability issues if left in the brake system for an extended period of time.Harley Davidson found that if a brake fluid flush was not conducted as outlined in the owner?s manual for the motorcycles, and was left in the system for a period of time beyond their recommendation; deposits could form in the HCU.Through further testing, Harley Davidson identified an alternate, commercially available, brake fluid that did not have the same stability issues as the original fluid and could stop the proliferation of any current brake system deposits.ODI sent Information Request (IR) letters to Harley Davidson and Dow Chemical (the supplier of the brake fluid on the subject motorcycles) to collect information about the subject bikes and the alleged defect.Harley Davidson responded in full on Sept 30, 2016 and Dow responded with a confidential submission on October 25, 2017.ODI analyzed the information contained in both IR responses and concluded that motorcycles manufactured during Model Years (MY) 2008, 2009, 2010, and 2011 were failing at a rate greater than their peers.Based on this analysis and the brake fluid study conducted by Harley Davidson, a group of motorcycles was identified that were potentially affected by the instability of the original brake fluid.2008 marked the introduction of ABS on Harley Davidson motorcycles and a change in the Dow 460 brake fluid used in the 2012 MY vehicles provided the bases for the scope of the affected population.With recall action 18V-076 taken by Harley Davidson this investigation is closed as further use of agency resources does not appear to be warranted.The ODI reports cited above can be reviewed at: https://www.nhtsa.gov/ using the complaint identification numbers attached to this resume.

the recall remedy to flush the system does not address the concern that the ABS unit still has the potential for failure. Millions of ABS systems in cars do not have such issues that require a hydraulic flush every 2 years. Failure is the ABS control module; it should not be due to moisture in a sealed hydraulic system. Failure of the ABS control module can cause complete loss of braking function or a complete lockup of the brake with resultant severe injury. A one-time system flush does not address the primary fault - replacement of the ABS module. I had front brake system completely fail within 1 minute following a harley dealer brake flush. As the motorcycle was on a hill, the front brake was to hold the bike from rolling backwards. It did roll backwards before I could rebalance an use rear brake. The motorcycle fell over - no injury of damage.

NHTSA ID

11657161

Incident

Apr 26, 2025

TL* THE CONTACT OWNS A 2011 HARLEY-DAVIDSON ULTRA-GLIDE FLHTCU. WHILE DRIVING APPROXIMATELY 50 MPH, THE FRONT BRAKES SEIZED. THE CONTACT WAS ONLY ABLE TO ENGAGE THE REAR BRAKE SYSTEM. WITH THE HELP OF A FRIEND, THE CONTACT TOOK THE VEHICLE HOME. SIX BENDS HARLEY-DAVIDSON (9501 THUNDER RD, FORT MYERS, FLORIDA, (239) 275-4647) WAS CONTACTED, BUT THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 6,444.

NHTSA ID

11131584

Incident

Sep 25, 2018

Mileage

6,444 mi

BIKE PARKED IN GARAGE FOR ABOUT 3 WEEKS BECAUSE OF COLD WEATHER. FIRED IT UP TO LET IT WARM UP FOR A FEW MIN'S. CLIMBED ON TO BACK IT OUT AND THE FRONT BRAKE LEVER WOULD NOT BUDGE OR STOP THE BIKE WHEN I NEEDED TO STOP. FORTUNATELY BEFORE I LOST CONTROL, I WAS ABLE TO LEAN TO THE RIGHT WHILE USING REAR BRAKE AND SIMULTANEOUSLY HIT THE KILL SWITCH AND POP IT IN 1ST GEAR TO STOP IT. CHECKED CALIPERS. THEY WERE FINE. STARTED BREAKING LINES AND FOUND THAT ON THE INLET TO ABS UNIT THERE WAS FLUID AND BRAKE MOVEMENT. RETIGHTENED AND THEN BROKE THE ABS OUTPUT LINE AND NO FLUID ESCAPED AND NO MOVEMENT OF FRONT LEVER. AND I MEAN ZERO MOVEMENT. IT WILL NOT BUDGE. STARTED RESEARCHING AND FOUND THIS TO BE A COMMON ISSUE FOR MY BIKE AND EARLIER VERSIONS. REAR BRAKE OPERATION IS FINE AND NOT AFFECTED.

NHTSA ID

10966542

Incident

Mar 11, 2017

Mileage

42,000 mi

I OWN AND OPERATE A HARLEY DAVIDSON FLHTCU ULTRA CLASSIC. WHILE RIDING ON THE HIGHWAY I TRIED TO USE MY FRONT BRAKES TO STOP AT A RED LIGHT AND THE BRAKE LEVER WAS HARD AS A ROCK AND WAS NOT ABLE TO MAKE IT FUNCTION TO STOP THE BIKE, HAD TO RELY ON MY REAR BRAKES WHICH PUT ME IN AN SLIDE BECAUSE OF THE HARD BREAKING TO COMPENSATE FOR THE FRONT BRAKES MALFUNCTION. I MANAGED TO RETURN HOME USING MY REAR BRAKES ONLY. THE MALFUNCTION OF THE FRONT ABS BRAKES OCCURRED WITHOUT NOTICE AND IT IS A HAZARDOUS CONDITION. WHEN I CONTACTED THE LOCAL HD DEALERSHIP I WAS INFORMED THAT THEY WERE NOT AWARE OF ANY SUCH MALFUNCTION ON MY 2011 FLHTCU. THEY ALSO ADVISED THAT THERE ARE NO RECALLS. WHEN I SPOKE WITH OTHER HARLEY OWNERS, I LEARNED THAT THIS IS AN ONGOING PROBLEM WITH HD BIKES BEGINNING IN 1999 WHEN ABS BRAKES WERE FIRST INTRODUCED BUT THE MANUFACTURER, HARLEY DAVIDSON, DOES NOT ACCEPT ANY RESPONSIBILITY FOR THE BRAKE MALFUNCTION WHICH COSTS OVER $1,000.00 TO REPAIR. THIS IS AN ISSUE THAT IS A SERIOUS PROBLEM. A FRONT BRAKE FAILURE CAN HAVE DIRE CONSEQUENCES AND CAN RESULT IN A CASUALTY BECAUSE FAILURE TO STOP ON A TWO WHEEL VEHICLE IS DANGEROUS AND CAN BE DEADLY.

NHTSA ID

10818724

Incident

Dec 6, 2015

Mileage

10 mi

NOTICED INCREASING WOBBLE IN TURNS, HANDLE BARS SHAKE AT OCCASION, TOOK TO DEALER, HE TEST RODE AND SAID IT WAS THE FRONT WHEEL BEARINGS WERE SHOT, AND THAT THIS IS A COMMON OCCURRENCE ON 09-12 HARLEYS, HE SAID HARLEY HAS SINCE BEEN USING A DIFFERENT BEARING, AND THAT THE REPLACEMENT WHEEL BEARINGS WERE AN UPGRADED PRODUCT.

NHTSA ID

10748553

Incident

Jul 1, 2015

Mileage

11,720 mi

HARLEY DAVIDSON TRI GLIDE 2011 MOTORCYCLE EXCESSIVE HEAT BLOWING FROM RIGHT SIDE OF ENGINE WHILE RIDING OVER 55 MPH FOR 25 MINUTES AT A TIME OVER 2 HOUR PERIOD CAUSED 2ND DEGREE BURNS, BLISTERS, SCABBING AND SCARRING TO BACK OF RIGHT LEG. 356 TOTAL MILES ON MOTORCYCLE PURCHASED NEW. HD INSPECTION POST INJURY STATES THE MOTORCYCLE IS OPERATING PER SPECIFICATIONS TO MEET EPA STANDARD. NO ALTERATIONS AND UNDER WARRANTY. *TR

NHTSA ID

10408742

Incident

Jun 2, 2011

Mileage

356 mi

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). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). New Software Update Version 26.0.2. Release Date: Week of November 18, 2025. New Features, Changes. 2026 Vehicles, 2025 Softail and LiveWire S2DM/MH/AP EV3. NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.

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 available. DYNAMIC DIAGNOSTIC CHARGER SYSTEM (PART NUMBER: DCA-8000). [Rev U] Added: Description of improvements made to the testing algorithm for GRX software Version P and DCA-8000 software Version E.

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 informs dealers that a recent software update to the Screamin' Eagle Pro Street Tuner application will require the use of a Personal Computer (PC) to complete a Bluetooth Communication Interface (BCI) firmware update.

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). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). New Software Update Version 25.8.9 Release Date: Week of September 2, 2025. Changes: LiveWire 2024 S2MH: Removal of incorrect Electro Hydraulic Control Unit (EHCU) reflash support; EHCU Module (Part No. 41100123): Addressed issue where module became unrecoverable after failed reflash attempted. NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.

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). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). New Software Update Version 25.6.4, Release Date: Week of August 19, 2025. Includes New Features and Changes for the Models & Model Years listed. NOTE: Digital Technician II (DT II) supports additional Harley-Davidson motorcycle models and model years outside of those listed.

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 available. DYNAMIC DIAGNOSTIC CHARGER SYSTEM (PART NUMBER: DCA-8000). [Rev T] Updated: New Software Update, Previous Software Updates and DCA-8000. Added: 192-210335P. Software update 192-210335P for GRX-3110 and DCA-800 to add new battery part numbers.