Eirian

the 'screwing up' of the car electronics is due to the multiplex wiring system. this can be easily resolved with some understanding. the tomtom go system, im assuming is the bluetooth pda sat nav system. i have used this and found it to work well with an acceptable number of satellites online generally. although i would recommend the all in one sat nav systems such as medion and navman, these can be found at halfords and work much better in my opinion. Eirian

there should be a screw/bolt underneath the radiator. undo the cap off the coolant tank, then undo the screw at the bttom of the radiator. drain all the coolant out, then put screw back in, fill coolant back up to correct level. then run the engine on idle filling up the coolant tank if needed. than put the cap on, monitor the engine temp for the next few miles. job done :( Eirian