Usually you can access it through the obd2 port.
But realistically, there’s no reason why you can’t design the hydraulics in a way that the cylinder is always leaking through an orifice and the dump trailer is constantly slowly lowering itself unless you are actively holding the Up button. There’s never a case where a truck needs to hold it’s dump up in the air for long periods of time.
No wonder they matched him with JT.
He’d draw on a weather map with a sharpie too,
Literally do and say anything, no matter how ridiculous, to not ever admit a mistake.