I have some potentially good news. While playing with multiscan ecu I was able to successfully interface/write to the trailer tow module. Unfortunately, since this software doesn't support the Compass. I had to try with its closest relative, the renegade, since they share the same body computer and many of the same modules. The proxy alignment did throw errors since it wasn't made exactly for this model. Thankfully I was able to re-run the proxy alignment with alfaobd and get everything back working.
Having this info, we know that it would appear to be a bug in alfaobd for the trailer tow module. I'm going to try and reach out to the developer one more time with this latest info and see if he can help. This would also mean compasses without the tow package should have no issues with a proxy alignment on alfaobd. Second option, we might be able to ask the developer for multscan ecu to support the compass. Since it is very similar to the renegade, this might not be too much work.
even better news! The developer responded and said this will be fixed in the next release!! woo-hoo.
Last edited by n4cr2k; 02-16-2019 at 07:52 PM.
Reason: new info