Just wondering if anyone has had a problem with the SmartCar radio -- using too much battery. I have a Brabus and in July 2009 the car wouldn't start and turns out the battery was dead. Kept charging the battery and had to start the car every other day in order for the battery to be charged. We returned the car to the dealer a few times and dealer finally changed the battery. We again in December 2009 had the problem again. So we have now taken the car to a different dealer. This dealer now tells us that the radio is the problem. Anyone else out there with this issue?