I was always a bit confused about how and what the ibus system did and how. But when I saw the “live screen” tracking all the messages flying around the ibus system from all the different modules sharing their status … it seemed to all fall in place.
Each time a module/ecu anywhere around the car does something or switched on/off etc it sends a message/ signal into the ibus system with a code telling all the other connected ecu’s what it has just done.
Each module/ecu around the car is programmed to do a job but they will also react to a particular signal/message when it receives a signal which is going round the ibus system/wire.
My main reason for setting up NavCoder is to enable voice control. It took several attempts to get it done but got there eventually. Now to get a voice control button mounted on the dash.
Not a lot of changes required on the Navigation coding screen.
A popular change is to enable TV IN MOTION on the TV coding screen – although not legally allowed in most countries.
MG ZT info mods and maintenance 