I'm surprised you are getting an alert. My cold pressures are 28.
I'm also having a slow leak in the RR. When I first caught it, I didn't get an alert until it was down to 24 I believe. I don't see how you are getting alerts, or why an '11 and '13 would be that different. In other words, it sounds like a system fault, not a programming issue (unless it's programmed completely wrong).
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