430EX III-RT not working wirelessly with EOS SL3

[sarahhumphreys]

I'm hoping someone can help me with this. I have the 430EX III-RT and EOS SL3. The flash will work on the camera but I cannot get it to work wirelessly using the pop up flash as the master. I have watched multiple videos and read the manuals. For some reason it just will not work. 

[kvbarkley]

What makes you think that the internal flash of the SL3 can be used as a wireless controller? In the specs for my T6S it is very clear:

[Anonymous]

I am not so sure that your camera supports the internal flash firing an external flash wirelessly. You would need to purchase a wireless transmitter to mount on the camera to fire your 430EX III-RT wirelessly, such as a Canon ST-E3-RT.

[sarahhumphreys]

Well darn! Thank you very much for your help