Could be the compressor/valve block, could be the control unit, etc. A good first step would be to check the fuses, if they are good and have voltage you may need to have the EHCII control unit faults read/analyzed and system tested. (would need GT1 equipped shop or dealer)

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"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

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X5 pics

RIP 4.6is.....

2003 4.6is