Customer Questions and Answers for Microswitch by Bosch

The Microswitch is an OEM part for Bosch microwaves. This small but vital part detects when the door is closed and allows the microwave to operate. It works through electromagnetic pulses that tell the control board the door position.

Causes of a bad microswitch can be wear over time if the door has been opened and closed many times, or damage from an accidental impact that jars the switch out of place or breaks internal components. Repairing or replacing it will restore full and safe operation of the door locking system.

Symptoms of a bad microswitch include:

• The microwave failing to start when the door is closed
• The door sensor light staying lit even when the door is securely shut
• Erratic or inconsistent functioning of the door interlock system
• Buzzing or clicking noises coming from the microswitch area

This OEM Bosch part can also be used on Thermador and Gaggenau appliances.