Just opening the door can wake up some microprocessors in some vehicles. That puts you in the awkward position of having to crawl in the window to pull fuses after you wait for everything to go asleep. 90-100 mA seems a bit high, but look at it this way. I presume that your TB has a pretty big battery. The reserve capacity might be 100 Ah. If you do the calculation it would take 500 hours to discharge the battery 50%. That is less than a month so it seems kind of high.
Are you sure that your ammeter is correct?