Whinge over, looking at the codes all are engine management related.
I suspect that you lost a power supply to the engine control unit & the above components,which disabled a portion of the engine PCM but left it communicating with the Gateway (J533).
The Golf 5 based vehicles put their brake lights on & refuse to start when they have issues with the J533 Gateway module, when comm's is lost with the engine or, just have brake lights on when the power supply to the brake light switch is interrupted.
I would think you have a fault in the terminal 15 relay causing a loss of power to the above components.
I have no wiring diagram here to confirm this so....
Just a stab in the dark.......
Jon.
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