So does the noise come from the back seat area when the key is turned ON or does the noise come from the engine bay (like in the video link I supplied) when the key is turned to CRANK?
The fuel pump is located under the rear bench seat and can be quickly checked with a multimeter:
If the car is a TDi, then there will not be a fuel pump there.
Fuel pump priming is not always audible.
Try to record the sound and upload it to youtube (free) and then post the link here.
Saturday, July 27th, 2013 AT 3:41 PM