ABS Light on shutdown

[RHeller11]

So I have had this truck for about 4 months now(2014 peterbilt 337) and ever since I have had it, I get an ABS on the screen with a red triangle everytime I turn the truck off. When I start the truck back up, I have no codes or faults and no ABS on the screen. I check it out with Acom and have no active codes and no history. Is this normal? what appears to me that is happening is the bendix ecu loses power when I turn the truck off resulting in the ABS??? Since the key is off, I have no way of seeing what the fault is.