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Electrical systemPart report

2012 Harley-Davidson FLHTCU103 Electrical system Problems

Complaints
3about this part
Share
20%of 15 total for the year
Median mileage
33,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the electrical system of the 2012 Harley-Davidson FLHTCU103, 20% of the 15 complaints for this model year. Where a mileage was given, the median is 33,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Start vehicle and no charging. Less than 12v on dash gauge. 2nd time in two weeks this has happened. Check engine and battery light come on. 3 miles down the road, and voltage is now 14v. Check engine and battery light switch off. Suspect a faulty voltage regulator. Had this happen on the 05 flhtcu I owned previously. $200+ for new voltage regulator. Will troubleshoot charging circuit prior to buying new regulator.”

NHTSA complaint #11000444, filed 2017-06, 22,000 miles

“The contact owns a 2012 Harley-Davidson flhtcu. While driving at 5 MPH, the contact attempted to use the horn of the motorcycle and an abnormal noise emitted from the vehicle. The vehicle was not diagnosed or repaired. The dealer stated that the horn was not properly sealed and needed to be replaced to operate in a working manor. The manufacturer was not made aware of the failure. The failure mileage was 45,000.”

NHTSA complaint #10779329, filed 2015-10, 45,000 miles

“The contact owns a 2012 Harley-Davidson electra glide ultra flhtcu. While riding the motorcycle, the voltage fluctuated and the motorcycle began to sputter. The motorcycle was not diagnosed or repaired. The manufacturer was notified of the failure. The contact was informed that there was a technical service bulletin, which had expired. The failure mileage was not available.”

NHTSA complaint #10955320, filed 2017-02

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2012320%

Other parts of the 2012 Harley-Davidson FLHTCU103

Brakes
6 complaintsEngine
2 complaintsOther or unknown
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsVehicle speed control
1 complaintsWheels
1 complaints

← All problems reported for the 2012 Harley-Davidson FLHTCU103

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology