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Old 04-07-2018, 04:26 PM   #26
old911doc
Registered User
wet Box

Yup, highly likely a damaged immobilizer box. These evil devices should have been located on the rear compartment wall, where the engine control unit is. The immobilizer is encoded to match the ECU and the car's keys. There is an excellent repair service in Florida that can help you a great deal but you'll need to send the immobilizer, the ECU, and the keys to them.They make an aftermarket plastic box to replace the factory one, to improve the water resistance. I have fitted it to all three of my Boxsters after having one immobilizer box ruined.
Although much is made about water entry through the convertible top bay--clogged drain tubes-- that is not the only source of water entry.It can also enter through the front firewall cable entry grommets if the front compartment drain tubes are clogged, and through the doors if the door drain slots are clogged or the vapor barrier sheet is loose or damaged, as often happens during window regulator repairs.
Drying the carpet in the car is nigh upon impossible: the foam rubber holds water very well. The only solution I have found is to remove the carpet from the car, clean it front and back, wet-vacuum as much water as you can, and put the carpet away foam-side down, for a number of days in a well-ventilated area. Expect it to take a week in the summer, three weeks in the winter.
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