My car throws up all sorts of messages from time to time, including those two, but the car is normally wrong! (i.e. message says "hill holder unavailable", but when you try it out it works fine; also had "ABS unavailable", but this was a lie too!).
The messages usually appear on the display when starting up, but they never activate an amber warning light. I assume that the car checks all systems are working each time it starts, and sometimes some systems are a bit slow to say they're ok, but there's no real problem.
My rule of thumb is that unless the same message keeps appearing, or unless an amber indicator is triggered, don't worry about it (and even if the amber warning light is on it may not need any action - I had indicator saying the steering wheel lock was broken for about two months, but then it magically fixed itself and hasn't come back again over 4 months later!)