There appear to be two major causes for this mine had the more frequent of the two.
Water in back seat floor bmw.
Repeat for the other side.
Water in chassis pours into passenger rear footwell.
I ve had the car back to the dealer who kept it for 4 days over the weekend and apparently stripped the car back and water tested it twice but couldn t find where the water was coming from.
The seats are not at all wet just the floor.
The car is parked on a slight incline so that the driver side is higher than the passenger side.
At the same time pull up on the front lip of the seat.
The reasons they cannot find the leak is that they are focusing too much on the rear door.
Just push back slightly on the front edge of the cushion about 6 in from the door.
This happens after it rains.
Managed to get a bit of the trim off today.
Nathan s bmw workshop 144 350 views.
Turns out it was a blocked sunroof drain water was running down the headliner and along the front door rubber seal and then pooling in the front and rear passenger seat floor.
Pulled up a corner of the front carpet and managed to pump quite a bit of water out probably a few litres.
Sometimes i do it with my thigh with my knee on the floor but yours is wet.
After sitting in the back seat in rain to find the leak it seems that the water is seeping in through the top door seal down around the inside door frame an under the carpet in the rear left corner.
I m parked in a level driveway.
2002 bmw 530i 113 000 mi during a heavy or prolonged rain or carwash water collects on the rear interior floor boards.
What i have found is that the water leak is actually from the front door and under the side carpet there is a ledge and the water runs along this ledge and ends up pooling in the rear of the vehicle.
The floor behind the passenger seat is soaking wet.
Bmw seats are far easier to remove than most.
One is that the sunroof drains can get clogged.
I ve since collected it and driven it for a week.
Bmw wet carpet problem easy fix e39 e38 e53 e36 e65 e66 e60 e90 e92 e85 duration.
You don t want to remove the seat back just the cushion.