Your compressor must have been working overtime and eventually shut down from overheating. Check the bags all around...spray soapwater on them for leaks and go from there. The compressor won't come back on unless it's reset through a diagnostics tool, activating it like you did won't do anything as the whole system needs to be in sync.

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BMW X5 E53, 4.8iS - 2005
Professional Stereo/Nav with DSP (modified BM54 module) - Converted to Eonon GA5166X with Reverse cam
4-Corner Air Suspension - Converted to BC Coilovers