Hi, i have a 99 S80 and i just had the battery and alternator replaced, but there seems to be something draining the power from my battery when the car sits overnight. I am wondering if anyone else has had this problem, and if so what was it? I am at a loss as to what it could be. any help would be greatly appreciated. Thanks, David

 

You will have to hook up with an Amp meter and watch the Amps and wait about 15-30 minutes for the car to go to sleep and start pulling fuses to see what system the draw is in.