Vacuum stops suddenly during use and displays E05, housing feels warm to the touch.

Safety: Remove the battery immediately if the unit feels very hot. Allow it to cool before further handling.

• 1. Allow cooling: Let the vacuum sit powered off with the battery removed for at least 30 minutes to cool down fully.
• 2. Check for blockages: Detach all accessories and inspect the wand, nozzle, and bin for clogs. Clear any obstructions.
• 3. Clean filters thoroughly: Remove pre-motor and HEPA filters. Tap out dust and wash if allowed by Siemens instructions. Ensure they are completely dry before reinstalling.
• 4. Inspect motor vents: Look for dust buildup around the motor cooling vents and inlet grilles. Use a soft brush or compressed air to clean them.
• 5. Short test run: Reassemble and run the vacuum on low power for a few minutes. If it runs without shutting off, gradually increase to higher power. If E05 reappears quickly, the motor’s internal thermal sensor or cooling fan may be failing.

Repeated overheating can permanently damage the motor. If the vacuum overheats even with clean filters and clear airflow, the motor assembly should be replaced.