As above can anyone tell me what causes the whirring sound at the rear about 10 seconds after the car is switched off. Car is in park with electric park brake on. Switch engine off, about 10 sconds later, there is a whirring sound from the rear ( i thought near rear passnger side) for about 2-3 seconds. Sometimes it will do it again and then silence. Not 100% that its not central rear either, rather than the left. Only thing i can think off is EPB motor, haldex or fuel pump, unless anything else is lurking under there.