I have been fitting the connection from the TMC to the instrument cluster to allow it to display the radio station / cd info.
But for some reason the head unit no longer powers off when the ignition is turned off.

Does anyone know of this is something I have done wrong whilst coding the display functionality or have I dislodged a wire somewhere.

Also my interior light does not go off when the engine starts. I am sure it used to.

My car is a 2001 facelift S3
With retro fitted RNS-D. TMC and TV tuner.