Help! Water is getting into my car on the driver's side -- I've found standing water behind the driver's seat (floor mat area) and the driver's seat carpet (where the pedals are) is wet.
Thing is, water only seems to be accumulating if my car is stationary for a period of time. Initially, the dealer said that drainage holes in the door had been plugged (probably by the previous owner fitting after-market speakers) so they took apart the door panel and fixed that problem. However, water continued to collect over the weekend (I'm in Boston where it basically hasn't stopped raining for two weeks) so that clearly wasn't the issue. My car is now back at the dealership and they now think it might be caused by a missing "body plug" on the driver's side undercarriage and that water is coming into the car as I drive. I'm not convinced and am looking for advice.
Does anyone have any suggestions as to why this is happening?