Sirius Sportster 4 SP4-TK1 Satellite Radio Receiver with Car Kit "causes car radio work cold" Questions

work continusley only when you don't leave it in the car.....i think they don't like the cold.... Unfortunatly I don't think it's the cold. I live in GA were it is hot in January. Not really, but it's

...car cradle or the home radio - but if i squeeze the top of the sportser the backlight comes on and sometimes stays on for a period of time. trying to take the back off having removed the 2 screws but ...