Thanks 33 it is. I have to hard reset the Pioneer head unit (Pioneer AVIC F88dab) every few months as the satnav stops picking up any GPS signals and this fixes it! Pioneer had it back but said it was working fine, came back to me and worked for a while but then lost gps signal again. It says is connected to gps and tried different gps antenna but the hard reset is the only way to get it working again.