My front park sensors have stopped working
They are totally dead but the rear ones
Are working fine any ideas anyone

Common fault - they are now 8 years old - battered by the elements - there are a few tricks to try & work out which have gone but the best is a diagnostic tool. Front bumper removal to replace the sensors - which sounds bad but can be done in 1 hour - the only problem you may come across is some of the bolts underneath tend to be a bit awkward & have been known to snap - then the fun really begins . 16MY Estoril Blue SVR.............
17MY Autobiography Dynamic - Corris Grey - WOW.
14MY Autobiography Dynamic - SDV6 - Fuji White
12MY Autobiography - SDV6 - Santorini Black - Dual View - Rear Entertainment - Sunroof.
12MY Autobiography - SDV6 - Orkney Grey - awesome ;(
2005 Java Black - 4.2 V8 Supercharged First Edition- will never be forgotten ;(

I've got a iid tool but it's not showing
Any fault so not got a clue

Not all IID tools pick up all the codes - Bodsy ( site sponsor ) located mine through a diagnostic tool. . Do you get any error messages along with a long bleep ? 16MY Estoril Blue SVR.............
17MY Autobiography Dynamic - Corris Grey - WOW.
14MY Autobiography Dynamic - SDV6 - Fuji White
12MY Autobiography - SDV6 - Santorini Black - Dual View - Rear Entertainment - Sunroof.
12MY Autobiography - SDV6 - Orkney Grey - awesome ;(
2005 Java Black - 4.2 V8 Supercharged First Edition- will never be forgotten ;(

No nothing no error massage no sound
No light on the button nothing at all just
Totally dead

Have you checked that the wiring serving the front sensors is still connected to the parking aid module? I think it's in the boot behind the near side trim panel. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed