Common issues are screen malfunctions and lighting problems, or burned out lighting. I have 4 Park avenues to test with counting Dad. All Buicks. MAY CONSIDER YOUR TRADE IN?. SEE PICS 2-16 FOR ACTUAL UNIT AND BUTTON CONDITIONS THEY ARE IN ABOVE AVERAGE CONDITION THIS UNIT HAS THE BEEP FEATURE WHEN BUTTONS ARE PUSHED AND SELF DIAGNOSE AS ALL 16202304 DO UNIT MARKED #124 7/18/26.
