E018 displayed; charger cannot connect to backend or app, and remote control features are unavailable.

Safety first: Network troubleshooting does not usually involve mains, but avoid opening the charger while powered unless necessary and you are qualified.

• Check physical connections: Ensure Ethernet cable is firmly plugged in and not damaged. For Wi‑Fi models, verify the antenna is attached and not broken.
• Verify network settings: Using the local interface or app, confirm that IP configuration (DHCP or static), gateway, and DNS are correct.
• Router/firewall: Check that the router allows outbound connections on the ports specified by Siemens for cloud connectivity. Temporarily disable strict firewall rules to test.
• Local ping test: If supported, use diagnostics to ping the gateway or a known server. Failure indicates a local network issue.

If local network is confirmed good but E018 persists, the charger’s network interface hardware or firmware may be faulty and require Siemens service.