Re: Guess it was my lucky day.
+1 They aint cheap per CC's note above. Plus, I made the mistake of buying a cheaper used unit on ebay and ended up needing to have the dealer reprogram the passive entry system.
Check out the Fobik by prying it open. The buttons themselves are formed by a rubber sheet that keeps moisture and dirt from the battery and mini module, though a vigorous dunking would eventually fry the thing.
If one happens to submerge the Fobik, I'd suggest opening it up and drying it out to save it from damage and corrosion.
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