Bill's people dug into my failed A/C on my 540 BMW and determined the compressor had failed and contaminated the entire A/C system. I later determined this was still covered under the dealer's warranty and Bill's people "buttoned" it back up and very willingly let me take this multi-thousand dollar repair to the dealer (who confirmed the same problems). There was no charge for this beyond the agreed to troubleshooting charge, which I thought was reasonaable.
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