2020 Harley-Davidson FLHX Street Glide — 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 FLHX Street Glide.
ABS Module Failure
HighCaused by moisture absorption in DOT 4 fluid. If not flushed every 2 years, the module can seize.
Oil Sumping
HighOil fails to return to the tank and builds up in the crankcase, causing friction and power loss.
Infotainment Blackouts
LowThe Boom! Box GTS screen may go black or flicker due to vibration-induced connection issues inside the fairing.
Used Buying Inspection Checklist
What to look for when buying a used 2020 Harley-Davidson FLHX Street Glide.
Brake Fluid Service Records
Verify the 2-year ABS flush was performed. Neglect leads to expensive ABS pump failure.
Oil Sumping Check
Though improved for 2020, check for signs of power loss or excessive heat after a long ride, which may indicate oil pooling in the crankcase.
Steering Head Bearings
Check for 'clunking' or notchiness in the front end, common if the 25,000-mile lubrication interval was missed.
Infotainment Screen
Test the Boom! Box GTS for flickering or blackouts, which can be caused by loose fairing connections or software bugs.
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