TKB4 wrote:
The 2006 models have a button on steering column to disable the ESP function. This should lead to a way to tell a 2005 ECU to be used on a 2006 CRD but not necessarily visa versa, depending on how the button/switch actually works.
No. That is a temporary command to turn off esp, that does not change the software compatibility.
Think of the esp button like turning off the touchscreen on a new windows 10 computer, just because the touchscreen is off until it is restarted doesn't mean all of a sudden its windows 7.
While the Bosch PN may be the same it will not be interchangeable with our ECUs unless the application file is reloaded. You can ground out between two pins during startup and put the ECU into boot mode where the software application can be loaded. In this way it would be possible to convert a TDI ECU into a Jeep ECU, IF, and only IF, we had the original application file to load. But these are Bosch/Jeep specific, and stay pretty well restricted to the OEM.
If we ever lucked out and found a source for the original application file we would probably also get the a2l file - which defines the map for all the parameters, bosch publishes tools for development and the motorsports folks that work with this. If we ever got the a2l files it would make owner tuning much more interesting as we would have clear definitions for that software revision.
_________________
http://www.Colorado4Wheel.com
"Its not about what you can
DO with your Jeep, its about where you can
GO with your Jeep."
Knowledgeable - But Caustic