Piston Slap: To Battle The Moonroof Rattle?

TTAC Commentator Sobro writes:

Hi Sajeev and your goateed evil twin Sanjeev!

Beige. We all know it, we all love it, especially when it comes in Lexus Pearl White as my wife’s 2003 ES 300 does. This vehicle has had exactly one non-maintenance item replaced since bought new: the A/C compressor relay. My wife installed it since her office is near the Toyota dealer. And it was July. In Nashville. It was my research in the Lexus forums which led to this fix for the flashing LED in the A/C button.

Which brings me to my question.

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