Air conditioning The front blowers blow hot air but the rear blowers work fine with obviously cooled air. We're in Mexico and have been driving cobblestone streets. Could something have come unattached?

Yes! You are absolutely right, sometimes when you drive on rough roads, the lines from the condenser(cold air module) may get loose and you lose your cold air. The fact that it's blowing in one part of the vehicle and not the other is a testament to that. The best advice is to get the air conditioning checked out. they do this really neat thing where they pressurize the line to find out where the leak is coming from. Hope this helped.