Has any one been experiencing battery or electronics problems with their XC60? Several times when we have left the car for more than 4 or 5 days, the battery is dead when we return. They have replaced the battery twice in the last 13 months (last time 10 months ago). The last time they claimed that it was drawing less than 0.25 amps which is normal, but the battery failed the hydrometer test, so they replaced it on their dime as it was only three months old. We're out of our warranty coverage now, so curious whether this is something others are seeing.