Hi \n\nAbove Tomtom slots into unit in Toyota Yaris Spirit, but can't get GPS signal, and will sometimes turn off. \nHave changed battery in above Tomtom. Worked in the car for the first time last week. Struggled to pick up GPS signal, but did eventually, then turn itself off. Works remotely fine.\n\nCould it be the unit in the car that is faulty? Was thinking of changing the whole unit?\n\nGrateful for any help. Able to connect to computer and update. Have a 2gb Sandisk SD Crd in it aswell. Not sure exactly is this correct.\n\nThanks for any help or answers. Much appreciated.