Water in carpert behind lhs seat

[Nedlands]

The boxes for the alarm ecu and drilling a hole are ok and all that but only address having a puddle in the car rather than avoiding getting one. Personally, I prefer a dry car which doesn't smell fousty and damp.
In addition to replacing my foam trays, I filled the extra space around the rear drains with expanding spray foam, trimmed it back and then sprayed the area under the trays with flex seal to give the poor design the best chance of working. New drip trays, then finished the job. A year later I have no leaks and dry carpets.
To find the source of the leak you need the carpet out. All of it! I then use talcum powder to coat the area and a water source to create a stream on the roof. The water will leave a trail on the talc coated surface which points to the source....
Good luck

[particlewave]

Originally Posted by Nedlands

The boxes for the alarm ecu and drilling a hole are ok and all that but only address having a puddle in the car rather than avoiding getting one. Personally, I prefer a dry car which doesn't smell fousty and damp.
In addition to replacing my foam trays, I filled the extra space around the rear drains with expanding spray foam

Expanding foam absorbs water like a sponge. It will mold and you'll never get it dry (flex seal won't keep the water out indefinitely, either). Then your car will really stink.

The best tried and true preventative measures are to check your drains once per year (more often if you park outside) and to put the immobilizer in a sealed container.
Always have a backup.