Can't code new GM3 module (COAPI-1080: error at changing ZCS) please help

[DrCharles]

OK, I got another used GM3 for my E39 540i/6 prod. 10/96. This module is slightly newer than the original. Swapping them with power-off only took a few minutes. So far so good. But now the central locking button doesn't work and the key still won't sync. Not completely unexpected since it came out of a different E39.

I read the data from the "new" module with NCS Expert + Dummy, changed the options to match my car (no Servotronic, for example) and attempted to code it. But I get a message: Error at changing ZCS. COAPI-1080: Codierschluessel fehlerhaft. Which translates as "Coding key incorrect".

After some searching online, I'm still confused... What's wrong and how do I fix it? Is this a profile problem, do I need to read the old module then code it to the new one, or what? Thanks for any help!

EDIT: my stupid fault - grabbed the wrong cable. I have 2 and only one works with NCS

But - now the remote locks work, but the windshield wipers don't! No matter what I do with the coding. I know I'm changing it because (for example) I turned off the soft on/off interior lighting and it comes on full. Did I get another bad module??

Put the old module back in, wipers work again (and of course the remote locking doesn't). Seller is sending me another GM3.

[DrCharles]

Received a replacement GM3.C10 (newer, from an E53). I couldn't use my previous GM3.C04 coding file so I just read the "new" module, changed the options to match my car, coded and resynced the key.
Now the locking and the wipers both work

Test drive once I charge the battery back up, to see if everything ELSE still works!

Now the trunk lock/unlock won't work. Settings look correct. AAAARGH! Starting new thread.