When I turn on a/c I hear a rattling sound. Last about 20 sec.
Goes away.. a/c blows cold air no problems (so far) just
began last week. Is there an easy fix or will it get worse if I
There could be leaves and other stuff interfering with the unit; if present, clear this out. It's possible that this is a sign of the compressor beginning to go bad; but not likely in a car that's only 7 years old. If you're not careful about maintenance, a loose belt might cause this. You should have this looked at by an AC mechanic; maybe at your next tune-up.