Originally Posted by zeus33
Please find new detailers. I probably now in excess of 100 and not one of them has EVER taken a pressure washer to the inside of a car. Can you? Sure. Should you? Absolutely not!
The fact is, it's a practice that does happen with no illeffects on the vehicle.
Further, I've seen recovery guys use pressure washers to wash out sludge from cars submerged in a flood. After expelling the water from the air system and changing the fluids, everything worked fine.
Do you know why most cars don't float? It's because there are drain holes in the floor. It's not because of vents or other things that would be above the surface if you drove into the water. Cars are designed to work even when flooded out as long as you keep water out of the air intake.
As someone else mentioned, you would ruin the speakers, the electronics on the dash, the power controls for windows, seats, etc. and you would have a serious mold and mildew problem.
You're wrong. Car electronics have no issues at all with water - even high pressure water unless something is loose or broken. All that stuff is far tougher than most people think - speakers included, which are pretty well protected from the force of pressurized water by the plastic grills and the coatings on the cones. They aren't simply construction paper with no protection on them.
Further, the gyst is to open up the car, vacuum out the water and dry what you can. Just the idea that you'd be sitting on a wet seat would make you do enough to avoid the issues.