Here share a common problem about DOIP MB SD C4 Plus WiFi connection and offer the corresponding solution.

Customer problem: An error message prompts as shown in the following picture. And there is something wrong with the WIFI. Is possible to use LAN cable to connect?

Obd2tool.com engineer solution:

There are two connection methods for MB SD C4 PLUS: by Wifi or network cable.

If it failed to connect by WIFI, please use a network cable instead of it.

If the WLAN is ok, don’t modify the IP setting.

For the connection problem, please watch the MB SD C4 plus DOIP WiFi Setting video to understand clearly:

If you have any MB SD C4 Plus DOIP problem, please feel free to contact us.