Charger indicates E10 or ‘lock error’; cable locking mechanism fails to engage or release; connector may be stuck in the socket.

Safety first: Do not force the connector out with excessive force; you may damage the socket or cable.

• Power down: Turn off the charger at the breaker to ensure the lock actuator is de-energized.
• Release attempt: Some Webasto models have a mechanical emergency release accessible behind a cover. Consult the manual and gently operate the release to free the plug.
• Inspect for debris: Once unplugged, inspect the socket and plug for dirt, ice, or foreign objects. Clean carefully with a dry brush.
• Test lock operation: Restore power and plug in without starting a charge to see if the lock engages and releases normally.
• If error persists: The lock actuator or position sensor may need replacement. This requires opening the unit and should be done by a service technician.