where is the boot lid sensor . 2006 Our C3 tells us the boot lid is open after driving over cats eyes! we live on dartmoor and the Cattle grids o the same trick . bleep bleep "boot lid open" it is not open just rattled enough to set this thing off where is it ? can I do some thing to stop it going off every little bump ? . the rear wipers stop working while the warning light is on times out after 10 mins or so ready for the next bump ……^^ ….