I have a rangerover l322 2006 model the problem is my front parking sensors don't work tested the sensors all ok carried out a continuity test from sensor to module all ok now the rear are working fine so decided to check the front buzzer there isn't one my first thought was that the previous owner may have removed it but no there is no connector hanging anywhere so my question is where does the soud come from them eny help much appreciated. Oh I am new here still trying to find my way around thanks