ELD Gremlins?

So was getting this air bag check light coming on the dash, took it in to Volvo and they've informed me it's this omnitracs IVG unit. All sensors are fine, when they unplug it the codes disappear, plug it back in, they show up again. I've noticed as well fault codes for the instrument cluster occurring at like 3 in the morning when the truck is shut off and not running. Anyone else noticed these gremlins with these things?

 

Update -
Took it in today to an Omnitracs shop, apparently these plug n' play harnesses have more wires then needed in certain applications with certain trucks. After this thing doing a firmware update recently, it played havoc with whatever it wasn't supposed to be connected with and threw these codes. The tech connected everything properly - theoretically, and codes disappeared. Sooo, we'll see. Also said trying to get Omnitracs to admit it has to do with their firmware update is an exercise in frustration. He's had 7 IVG units come into the shop in 2 days.

 

Yeah this shop I’ve used before when qualcomm was the thing of the day. He told me all kinds of crazy stuff that was happening. It’s the harness, especially the plug and play. If an experienced installer hard wires it in, he should only connect what is needed for that specific brand of truck. If you’re getting any type of wacky codes, unplug that thing from the data port and see what happens.