Cruise control and active spoiler retrofit into N/A auto.
I have changed the dash loom for a TT model wired for active spoiler and cruise.
The column loom has been changed for a loom including cruise.
The engine loom included these functions and is unchanged.
Fitted the active spoiler, switch and ECU, cruise actuator, control stalk and ECU.
The spoiler 'down' function operates correctly, yet does not operate in 'auto' whilst car cruising.
The cruise ECU clicks when turned on, but the dash light does not come on, and cruise does not function.
Before I begin running through circuits, switches and ECU checks, I suspect that the main ECU may not include these functions.
Does anyone know if there are versions of engine/gearbox ECU, with and without these functions?