ME17.2 Drivetrain Error Codes & Messages

Has anyone compiled the drivetrain CAN messages for an ME17.2? My vehicle is a 2012 CC Sport. I am specifically interested in the DSG messages for Park, Reverse, Neutral, Sport, +tiptronic, -tiptronic.

I have extracted some data. It appears that ID 540 corresponds to Park, Reverse, Neutral, and Sport. However, I have not been able to locate the messages for paddle-based upshifts or downshifts.

Sure.
David.

Correction: CAN ID 540 seems to be specifically for the instrument panel to display the gear.
ID 448 seems to be the actual gear change message. Can someone confirm this?

My project: I am installing a VW 2.0TSI engine with a DSG transmission into my Lotus Exige. I want to remove the physical gear selector lever and replace it with an electronic dial.

My problem: when the vehicle is in a specific gear, such as PARK, the CAN message is:

ID B1 B2 B3 B4 B5
448 82 0 FF 1F 70

but bytes 3 & 4 are constantly changing. What message would I write out?

Data for "PARK" is attached.

Sure.

Yes, you are checking the correct ID. This ID is for the gear selector.
In your log, I see that you are in "parking" mode.
Last byte - 0x70.
Gear is high nibble, so mask 0xF0. And its inverted. SO in your case is 0111xxxxb --> 1000xxxxb. That means P.
D should be - 0101xxxxb..

Byte2 (in your case B3, as I always count from 0) represents the test result from the second ID.
Byte3, lowest nibble - simple counter.

Byte 3, bit 4: Test active flag - 0: test result invalid, 1: test result valid.
Byte 3, bits 7 through 5 - free.

Sure!

"One thing I don't understand is: 'Byte2 is the test result from the 2nd ID.'"

Can you explain this in more detail?

-David