I've had the dreaded water ingress in the rear left hand compartment. Everything is still working but the Sat nav only comes on after about 15 - 30mins of me driving with a/c on.
Before this the computer screen doesn't show that there is any GPS there.
It is still a mk3 but does me for how often I use it.
Does anyone know why this is happening or how to sort it so the Sat nav is on when I get in the car.
Cheers Grant

i'd sort the water problem first....once thats done you might find the nav comes on sooner...