Safety: Remove the battery and keep the vacuum powered off while inspecting.

1. Power cycle: Remove the battery for at least 5 minutes. Press and hold the power button (battery removed) for 10–15 seconds to discharge the electronics. Reinstall the battery and test.
2. Remove accessories: Disconnect all accessories (wand, nozzle, powered tools) and try to start the vacuum with only the main body. If E17 clears, one of the accessories may be shorted.
3. Check for moisture: Inspect vents and seams for signs of moisture. If the vacuum was used to pick up liquids or in a very humid environment, allow it to dry in a warm, dry place for 24–48 hours (battery removed).
4. Inspect PCB: If comfortable, open the main housing and visually inspect the main PCB for corrosion, burnt components, or debris. Clean light corrosion with isopropyl alcohol and a soft brush.
5. Replace main PCB: If E17 persists and no external cause is found, the main control PCB is likely defective and should be replaced.

Do not attempt to reflash firmware unless Siemens provides an official procedure and tools.

Vacuum shows E17 and emits a continuous or repeated beep; may indicate a generic internal fault.

Possible Causes