The magnet is located in the water reservoir of the brewer and functions as a water level sensor that detects when the coffee maker needs to be refilled with water.
Detach the water reservoir from the brewer by lifting the reservoir vertically from the device.
The magnet is located in the bottom of the reservoir.
Remove the grey lid from the top of the reservoir.
Insert your hand and manually realign the magnet to where it slides freely in its enclosed area.