When you reconnect the battery, the DSC and ABS or BRAKE lights may be on all the time even after the engine is running.

To reset them, drive to the dealer and pay $150 for diagnostic fee
OR
Turn the steering wheel all the way to the left, then all the way to the right and the lights should go out. (I could not believe it when I found out this one 2 yrs ago when I had a dead battery)