Yes, the lights all appear to be working normally. I found where I changed the coding and turned this message on. I turned it off again.

So, the aux heater is a small electric pump. If there is an error, then there is no electricity or the motor is shot. I will find it on the left side somewhere in the engine bay. It's not leaking, and it's also not one of those critical-need items, so I may simply ignore it. RealOEM will help me find it, and I can decide from there what to do. Thanks.