Siemens
Display / HMI Module Failure
Front display or LED panel on Siemens charger is blank or unreadable, but the vehicle still charges normally.
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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 LCD/OLED panel or LED board, Loose ribbon cable between HMI and main board, Backlight failure, Water ingress damaging front electronics
How to Fix / Troubleshooting
Safety first: Isolate power before removing the front panel.
- Check brightness/settings: Some models allow dimming; ensure brightness is not set to minimum.
- Inspect connections: Reseat the ribbon cable or connector between the display module and main control board.
- Look for moisture: Check for condensation or corrosion around the display; if present, address enclosure sealing issues.
- Use app/web: If available, use the Siemens app or web interface to monitor charger status while the display is inoperative.
If the charger functions but the display remains blank, the HMI module likely needs replacement.
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Repair Difficulty
Medium
3/5
Required Part
Display / HMI Module
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