My 2007 Grand Cherokee's sat nav can locate the destination but once I click the route it tells me to 'Proceed to Location'. The display shows a location which is not where I am and no further instructions. Could it be a GPS antennae problem rather than the disc or radio unit. Help needed. Thank you
Found the problem myself, it was a faulty rear ABS sensor. apparently this can happen. Hope this may be of use to anybody else who has a similar problem.