On my 90 300te, I get a very unpleasant buzzing when I first start the car. I should be more exact, I get a sort of shreiking-buzzing when I first start the car. It then goes away after a a minute and doesn't return until the next time I start the car. Even when I've quickly fastened my sealt belt it still stays on for about one minute.

Air sampler fan? Seat belt warning buzzer?
Comments?

Thanx.

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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio