2009 Harley-Davidson Flhtcu electrical system problems

11 owner complaints filed with NHTSA name the electrical system on the 2009 Harley-Davidson Flhtcu — 16% of all complaints for this model year.

Electrical System complaints

16%

share of all complaints

—

median reported mileage

0 / 0

crash / fire reports

What owners report

“The wiring harness connector to the efi/ecm is faulty, causing multiple codes dealing with low voltage to the throttle by wire, these low voltages causes the throttle to fail during riding and loss of speedometer. I have nearly been in multiple accidents related to the issue which has occured well…”
filed Apr 9, 2017
“Riding my 09 harley ultra, when at low speed I had to stop for a car stopped to make a left turn. The front brake lever was frozen and could not apply the brake. I swerved off into the grass to avoid hitting the car. The rear brakes still worked but at slow speeds I use the front so I can put my…”
filed May 27, 2015

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

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 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