Comment by m463

I tried this once.

I got a tesla home charger and it had a unnecessary wifi AP that kept showing up in my house. So I figured, I would stop this.

Opened it up, and disconnected the wifi antenna mmcx connector.

Nope, seemed when unplugged, it would switch to an onboard antenna for the wifi module.

so I reconnected a dummy load antenna to the wifi module.

and it still used the onboard antenna.

at that point, I gave up.

I think there might have been a possibility of downgrading the firmware to an older version that could disable wifi, but I didn't try to find it.

I believe this kind of thing happens with onboard cellular, wifi and bt. They are more resilient to degraded or disconnected antennas than you think.