E11
Webasto
RFID Reader Communication Fault
Charger shows E11 or ‘RFID error’; unit does not recognize RFID cards or fobs; charging cannot be authorized.
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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
Damaged RFID reader module behind front cover, Loose ribbon cable between RFID reader and main PCB, Corrupted authorization database, Interference from metal plate or enclosure modification
How to Fix / Troubleshooting
Safety first: Turn off power before removing any front covers.
- Try multiple cards: Test with more than one authorized RFID card or fob to rule out a single bad tag.
- Check card orientation: Hold the card flat against the marked RFID area for a few seconds.
- Reboot charger: Power cycle the Webasto unit at the breaker and test again.
- Inspect front cover: If recently painted or modified, ensure no metal plate or thick material has been added over the RFID antenna area.
- Service access: A technician can open the unit, reseat the RFID reader cable, and replace the reader module if necessary.
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Repair Difficulty
Medium
3/5
Required Part
Webasto RFID Reader Module
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