A 90ma draw isn't enough to drain your battery in two weeks. Maybe two months. (I just did the math: 53 days, assuming a 100AH Group 49 in good shape. A 20ma drain would give you eight months.) There must be a larger drain.

Is the car locked when the battery drains? It could be that the alarm circuit accounts for the draw. Otherwise, it's probably going to be an intermittent problem. Glad I no longer own a 210.