Siemens Battery Level Indicator / LED Fault

LED battery indicator on the vacuum body does not light at all, but the vacuum still runs.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed LED board, Disconnected LED harness, Faulty LED driver on main PCB, Damaged indicator window or light pipe

How to Fix / Troubleshooting

Safety: Remove the battery before opening the housing.

  • 1. Confirm operation: Verify that the vacuum runs normally and charges correctly; only the indicator is affected.
  • 2. Access LED board: Open the housing near the indicator area to locate the LED PCB or light pipe assembly.
  • 3. Check connections: Ensure the LED board connector is firmly seated on the main PCB. Reseat if loose.
  • 4. Inspect LEDs: Look for obvious damage or burnt components on the LED board. Replace the board if damaged.
  • 5. Replace main PCB (if needed): If the LED board is good but receives no power, the LED driver on the main PCB may be faulty, requiring PCB replacement.

While this fault does not affect cleaning performance, it makes it harder to judge remaining runtime; repair as convenient.

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Repair Difficulty

Medium 3/5

Required Part

Battery Indicator LED PCB
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