in my car i like to have the a/c air recirculation switch on because it keeps the car cooler, uses the a/c less and saves fuel.

problem is, the switch is actually a button and the recirculation turns off when you turn the car off, so you have to hit the switch every time you start the car.

besides being annoying and a pain, the little picture on my recirc button is rubbing off!

i was wondering if anyone knows a way to keep it turned on. ive heard of people jamming something in the flap that it moves so that it stays closed to the outside, but i dont really want to do this and i dont even know how if i did.

i was wondering if it was possible to reverse the switch so that instead of starting out open, it starts out closed. maybe its possible to flip around some wiring to reverse the polarity to the servo that moves the flap.

has anyone done anything like this? please tell me if you know anything about how this flap works.

thanks

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1991 300 D 2.5 Turbo, 220k
also in the family:
1981 240 D 185k
1991 350 SD 185k
2006 S 500
2005 SLK 350