I was driving today with my automatic air conditioning set to manual on lowest fan speed when I hit a moderately sized bump and it switched to full blast. Anyone else had this happen before? It resumed normal operation after I set it back on low.

This wasn't even a very big jolt compared to some others. Oh, I drive over this unavoidable concrete slab unevenness daily and this is the first issue with it.

 

I think my auto AC went nuts a couple of times (but easily reset) in the first year or two but nothing in the last several years. Maybe one of the upgrades fixed it. Maybe it was just a fluke. My MCS was built in 10/2003.