Microwave is excessively noisy during operation (rattling, vibrating, or metallic noises).

Safety: Unplug the microwave before moving or inspecting it.

• Remove items from top: Take off any objects stored on top of the microwave that may vibrate.
• Level the appliance: Ensure all four feet are firmly on a stable, level surface. Adjust if necessary.
• Check turntable components: Remove and reseat the glass tray, support ring, and coupler to ensure they are properly aligned.
• Listen for source: Run a short cycle and listen carefully (without touching the unit) to identify if the noise comes from the bottom, back, or side.

If internal rattling persists: Internal components such as the fan or magnetron mounts may be loose. A Bosch technician should open the cabinet and secure or replace parts as needed.