[Scudder]

But this contradicts the process, ignition on disconnect then ignition off is impossible

 

[mike1967]

the car ecu's are all switched on from when you unlock the door with key fob the body control module switches it all to life it stays alive for 3 minutes before shutting off so whether it has a button or a key is neither here nor there, the point of discharging the circuits by the process are all the same,

 

[Scudder]

So are you saying that 3 minutes regardless of ignition off makes no odds? I still don't get it? With my key in it will never be ignition off when the positive is reconnected

 

[mike1967]

you put fob into dash press start button as to turn on ignition ie all fuel gauge comes to life etc,, at this point the ignition is definitely on, then press the button once ie this switches off the ignition leave fob in dash then disconnect battery and cross them,, thats the beginning of it thought that would be fairly straight forward to work out on a car with a start button and not a key you turn, the fact the button does away with the rotary movement of a key but still does the same thing,

 

[Scudder]

No mike that is not how it was described in original post but will do that next. You need to clarify that anywhere else it is posted to keep it right, thanks again