Yeah, I sure would. Or perhaps even talk to them before that visit. With the complexity of the battery management system, I'd expect there would at least be an error code appear or a failsafe reduction in charging power if the cooling was called but not responding. Definitely don't want to cook the batteries.
The previous problem of low regen is also interesting and I half wonder if there is a connection. But the correction after the contactor replacement would seem to suggest 'no'.
Still seems odd though. Have you looked at the charge rate in the other cars that are blowing and perhaps noted their battery version?
I just shot a note off to Service.
My gut says it probably has something to do with the fact that I have a 90 kW limited A-pack battery. I think most of the other cars I've seen, and other owners I've talked to, have newer cars. Even a few owners who got cars before me came with B or later packs. Mine was a bit of an anomaly coming in March 2013 with an A-pack.