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There is a curious design flaw in Boxsters wherein if you have locked the car, then the battery goes totally dead, there is no (easy) way to unlock the hood to jumpstart the car because you can't unlock it manually via the intended method. Thus, one of the options is to feed power into the car another way. By connecting power to the cigarette lighter receptacle, you can power up the car again and thus unlock the hood/trunk.
the problem is that if you get the polarity wrong, it can cause damage. you can also cause problems by turning the ignition key while doing this. thus, i cleared the data on my control unit. sadly, i had been warned of this but made the mistake anyway.
if you are going to leave your car sitting a long time, put on a battery tender, or disconnect the battery, or just leave it unlocked. i'm sure i'm about the 1000th person to go thru this ordeal.
does that explain it?
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