Unit vibrates excessively or rattles loudly during brewing.

Safety first: Ensure the unit cannot vibrate off the counter; keep it away from edges.

Stabilize unit:

• Place the coffee maker on a flat, level surface.
• Use a thin rubber mat under the base to dampen vibration.

Check components:

• Ensure the carafe and reservoir are fully seated.
• With the unit unplugged, gently shake it and listen for loose parts; tighten accessible screws on the base and housing.

If rattling persists and seems internal, a pump mount or heater bracket may be loose and require internal tightening or part replacement.