I have an '06 X5 3.0 I'll be replacing the compressor on shortly. I'm working on putting a part list together and wanted to see if anyone had any other suggestions on additional parts I should replace and any good DIY guides.

I am getting a code of "IHKA: Magnetic Coupling. A/C compressor"

I took it to a repair shop to validate the refrigerant was not low (just a general local place as I really just wanted to validate refrigerant levels) . They determined it was slightly low and I have slight leaks around both the low and high pressure service ports. They filled to the proper amount and verified the compressor received a signal to turn on, but would not engage, which confirms my idea to move forward with the compressor replacement (going to do the whole thing instead of dealing with just the clutch). I'm going to have them give me the car back with the system evacuated and replace the parts myself, then have them vacuum and refill once I am done.

So far I have this list for parts:

• Compressor
• Drier (Last time I fixed an AC leak, I didnt do this, but it is not too expensive so figured I might as well)
• High and Low side valves (should I replace the hoses the valves are on or just the valves?)

Should I replace the AC expansion valve too? The shop mentioned that.