For full Desert Titan taming details, get the taming calculator app.
To tame a Desert Titan, you must destroy the corruption on its body. Taming effectiveness will drop if you hurt the Titan, so try to focus on the corruption. Titans come pre-equipped with a Platform Saddle, however, they are piloted from a seperate cockpit. Titans are a 24 hour temporary tame.
How to tame a titan:
Step one: piss your pants
Step two: grab a mek
Step three: shoot the glowy thingnies
Step four: piss your pants some more
Step five: destroy all of the glowing orbs until it falls down.
Step six: click tame kaiju
Boom you have a titan
You can fliping build an air force base on it and if you can transfer your tropeognathus from crystal isles to extinction if you have the tek transmitter engram you can load it with a bunch of them with the saddles and grenades and fuel to then them into literal jets