yep, if the AC clutch doesnt engage when you pull the pressure switch wire by the compressor, its probably the fuseable link INSIDE the clutch. its a PITA but can be done on the car, without opening the AC lines. there is a write up on here some place.

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2004 X5(E53) 3.0L
1999 M3(E36)
2003 Z4(E85) 3.0L