Wallbox shows E10; charging current is limited or charging does not start; often associated with load management or smart energy features.

Safety first: Turn off power before handling communication wiring.

• Check communication cables: Inspect Ethernet, RS-485, or other communication cables connected to the wallbox. Ensure connectors are fully seated and cables are not damaged.
• Verify configuration: Using the Mercedes-Benz wallbox app or web interface (if available), check that external load management is configured correctly and that the correct meter or controller type is selected.
• Bypass test: If permitted by the manual, temporarily disable external load management in the configuration to see if the wallbox charges normally without it. This helps isolate whether the issue is with the external system.
• Update firmware: Check for available firmware updates for both the wallbox and the external load controller. Apply updates following manufacturer instructions.
• Professional support: If E10 persists, contact the installer or Mercedes-Benz support to verify compatibility and wiring of the load management system.