Items to Check When Upgrading an Ethernet ECU Using an LTE/5G Tablet

When upgrading an ECU that uses the Ethernet protocol with a mobile carrier-connected (LTE/5G) tablet, you must turn off mobile data.

Reason: Even if a static IP address is configured to use the Ethernet protocol, the IP address is handled dynamically, preventing the CCU from recognizing the diagnostic tool.

For details, refer to the diagnostic tool pop-up message below.