So, I notice that sometimes when I make several trips in a day that at one point my car will not start. It's a 2001 9-5 4 cyl. turbo w/ 130,000 miles. When I go to start it there is absolutely no sound......no turnover or anything but all the electronics work perfectly. Maybe a little buzz for a second and I assume that is the battery working the electronics. If I leave the car alone for about 5-10 minutes she'll start right up but if I continue to try and start her it'll just delay the starting for up to 20 minutes. Any ideas of what this may be? Oh yeah, this problem has been going on for about a year which leads me to believe that it's not something wearing out because it probably would have gone by now. Also, it may not happen for months or it may happen several times per week.