2020 Harley-Davidson 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 2020 Harley-Davidson Ultra Limited.
Brake Light Malfunction Recall
HighA recall (0178) affected 2020-2022 models where the brake lights could stay illuminated without rider input; resolved via a software update.
Voltage Regulator Spikes
MediumSome owners report voltage spikes (up to 16V) that cause the infotainment or lights to cut out intermittently.
ECU Water Sensitivity
MediumReports of the ECU shorting or throwing codes after a high-pressure wash if water enters the connector area.
Used Buying Inspection Checklist
What to look for when buying a used 2020 Harley-Davidson Ultra Limited.
Coolant Pump and Hoses
Check for white residue or leaks around the water pump (bottom of frame) and the hoses leading into the lower fairings.
Primary Fluid Level
Check for 'fluid transfer' where transmission oil migrates into the primary; though mostly resolved by 2020 with a factory vent, it is still worth verifying on high-mileage bikes.
Infotainment Boot-up
Ensure the Boom! Box GTS system boots quickly and the touchscreen is responsive; software glitches were common and often require firmware updates.
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