09 E350 Strange sound from engine compartment
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09 E350 Strange sound from engine compartment
My car was parked in the garage with the engine off. I went out into the garage and about every 8 seconds I hear a high pitched sound coming from engine compartment that last about a second. Didn't know what to think so I went back inside. Couple hours later I went back out to check it and it was still doing it. Anyone know what this might be?