Toyota Repair: A/C Compressor rely 2003 camey, magnetic clutch, receiver dryer

Question
I took my car to Toyota to get a diagnoses of my A/C.  They told me I have a Ac compressor and relay. It needs a AC compressor relay receiver dryer.  Now the question is; could I just have the relay switch change or is that switch inside the compressor? Is it vital that I get a new compressor and dryer, and relay switch?

Answer
What you could do is to just replace the magnetic clutch relay, it's located under the hood in the relay block near the battery, get the part from toyota and install it yourself, the relay is about $80 from the toyota dealer. The part number is  90987–02028.