This is getting annoying. When I take the battery off to recharge or replace as was the case today, I get the following message when I start the car afterwards: **WAIT** The System is acquiring its GPS Signal Leave the engine running Car stationary and parked away from buildings And so on... When it's done this before it's cleared after a few goes but not this time. I'm stuck on this screen, I've tried the three key combo and I've even followed the instructions on the screen but with no joy. Any one else had this or any advice? GRRRRRRRR.