Re: Charging system warning light came on right when I drove off the lot
If you have a digital volt meter, you could check the voltage of the battery with the engine off. It should be normally around the 12V. Then start the engine and check it again. If the charging system works, the voltage will show now around the 13V. When this is the case, at least you will not be stranded with a depleted battery somewhere along the road, but ofcourse you should take your car to the dealer.
When the voltage doesn't change between engine off and engine running, you can better not use your car, otherwise it can stop at any moment when the voltage gets too low.