Display shows U17 and the grinder or brewing process will not start on a Panasonic grind-and-brew model.

Safety first: Unplug the coffee maker before opening the grinder area.

• Close lid firmly: Open and close the bean hopper lid, pressing down until you hear or feel a click. Some Panasonic models require the lid to be fully latched to enable grinding.
• Inspect lid tab: Look for a small plastic tab or magnet on the underside of the lid that engages the safety switch. If it is cracked or missing, the machine will show U17.
• Check hopper seating: Remove the bean hopper (if removable) and reinstall it, ensuring it is aligned with the marks on the body and locked into place.
• Clean around switch: In the area where the lid closes, inspect for coffee grounds or debris that may prevent the lid from fully depressing the switch. Clean gently with a dry brush or cloth.
• Service switch if needed: If the lid and hopper are intact but U17 persists, the internal lid safety microswitch may be defective and should be replaced by a qualified technician.