I believe I know that sound. I hear sometimes when I start my car and asked the dealer about it once. I was told it has something to do with the fuel pump priming up or something to that effect. SA said it's not anything to worry about but we'll see. I though it was from under the hood but it was from the backend but the sound seems to echo under the car.
2012 650-xDrive Convertible. Titanium Silver Metallic - M Package - Driver assist package- Cold weather package - luxury seating package - Bang & Oulfsen system.
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