I'm hoping fellow owners can help me in diagnosing this sound. I have not got the key in the ignition, doors are all closed as is the tailgate. When the car is locked I can still hear this sound from the outside. What have I left on? The sound is like if you were playing a key on a keyboard. The time in between each is about eight seconds. 

 

 

 

Welcome.

 

If the car was locked and sitting a few hours then when you open the drivers door the fuel pump primes. 

Assuming the 1.4 is similar to the 1.6, the electric water pump comes on after you have stopped the engine and runs for about 10 seconds in most instances. Its purpose is to avoid leaving hot spots in the engine.

The motor is quiet but can be heard with non noisy backgrounds.

 

Thank you for the replies. I don't think it is either of these pumps. It has also drained the battery on two occasions when it has not be driven for a number of days. 

 

If you listen to the clip on Lekky33 right at the very end is the sound that I'm hearing in my Octavia.