you can add something like this in addition to the Dongar adapter.The adapter is for dash cam ,but is not correct end for escort 360 max c detector , do they make one for radar detector? looked at the website and they don't even list a toyota.
5V USB Type A to 12V RJ11 Escort / Valentine / Uniden Radar Detector Power Cord - Universal
5V USB to 12V RJ11 Power Cable Plug and Play Solution to Power Many Radar Detectors Aides in cleaning up installations 12" overall length, ~10" cable length OR 38" overall length, ~ 36" cable length Here's a solution that prevents messy wires that we use ourselves! It is a universal part, but...
www.21offroad.com
a direct adapter from the Toyota 5pin to the RJ11 for a radar detector doesn't exist (yet)