Vacuum shows E12 and will not start when dust container is removed or not seated correctly

Safety first: Remove the battery before adjusting the container or interlock components.

• 1. Reseat container: Remove the dust container completely and reinstall it, ensuring it is fully seated and latched according to the Festool manual.
• 2. Inspect latches and seals: Check that the container latches close firmly and that no debris is trapped between the container and the main body, preventing full engagement.
• 3. Locate interlock switch: Open the housing (if necessary) to find the container presence switch or sensor. Verify that the actuator from the container actually presses or triggers the switch when installed.
• 4. Check wiring: Ensure the interlock switch wiring harness is intact and the connector is secure on the control PCB.
• 5. Replace faulty switch or container: If the switch does not change state when manually actuated, replace the interlock switch. If the container's plastic actuator tab is broken, the container assembly may need replacement.