2015 Harley-Davidson FLHTK Electra Glide Ultra Limited — Common Issues & Known Problems
Known Issues & Owner Reports
These are the most commonly reported issues and concerns from owners, mechanics, and community forums for the 2015 Harley-Davidson FLHTK Electra Glide Ultra Limited.
Water Pump Failure
HighThe electric water pump for the Twin-Cooled system can fail prematurely, leading to overheating in slow traffic.
Hydraulic Clutch Malfunction
HighGas bubbles can form in the clutch fluid, preventing the clutch from fully disengaging, especially after long storage.
Boom! Box 6.5GT Glitches
LowSoftware freezes, navigation lag, or Bluetooth pairing issues are common in early firmware versions.
Thermostat Housing Cracks
MediumThe plastic thermostat housing on early Twin-Cooled models was prone to cracking and leaking.
Used Buying Inspection Checklist
What to look for when buying a used 2015 Harley-Davidson FLHTK Electra Glide Ultra Limited.
Hydraulic Clutch Recall
Check if the 2015 recall for the clutch master cylinder (gas bubbles) was performed. A soft or 'dead' lever after sitting is a symptom.
Coolant Leaks
Inspect the fairing lowers for signs of dried coolant (pink/orange crust) near the radiators or thermostat housing.
Saddlebag Mounts
Verify the saddlebag mounting pins have been updated or are secure; early versions could allow the bag to fall off.
Infotainment Screen
Check the 6.5GT screen for 'ghost touches' or delamination, which can occur from sun exposure or moisture.
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