Only time's I've seen 2:004 is either when setting's / calibration is being adjusted & sometime's the truck has a sulk on restart OR after a software download has been carried out when the configuration need's copying between MCU & CID.
CAN key is part number 7516708.
Parameter 342 is lowering speed & is changeable with the CAN service key, it's only the factory parameter's from 1001 onward's that need Truck Com.
Some driver & operator parameter's need the truck switched OFF to change while other's can be changed with the truck ON.
Some operator's find the default RRE steering setting a bit lively after being use to an older generation Reflex, I find 772 for the RRE steering a nice setting.
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