Hi, As a very new Volvo owner I am looking for experience of a minor issue, I have an issue with the high level brake light not working on my 2006 V50 estate, is there a common fault and/or fairly easy fix to rectify it?

 

assume you mean the center brake light, aka third brake light?

Did you check to see if it needs a new bulb? You should be able to find a how to vid by googling or searching on Youtube. Problem can also be the LEDs in the housing or a wiring issue. If its the LEDs you'd need to replace the third brake light ~60-75 USD