* No air conditioning: Obviously, you won't have cold air. This can be uncomfortable, especially in hot weather.
* Potential belt issues (depending on how it was disconnected): If the compressor was disconnected by simply removing the belt, the belt might be loose and could slip or even break. This is a more serious issue and could lead to other problems. A properly tensioned belt is important for alternator function (charging the battery) and power steering.
* Diagnostic Trouble Codes (DTCs): The car's computer may register a code indicating a problem with the AC system. This might illuminate the check engine light. While not directly unsafe, it's a signal that something needs attention.
In summary: It's not inherently dangerous to drive a short distance with the AC compressor disconnected, provided the belt is properly managed. However, it's not a long-term solution. You should have the AC system properly diagnosed and repaired to avoid potential problems with the belt and the possibility of more extensive AC system damage. Driving for extended periods with a loose belt is risky and could lead to a breakdown.
