QUOTE (RX in NC @ Oct 30 2009, 07:19 AM)

I admit that the underbody covers are a hassle when you need to perform maintenance underneath the vehicle. However, they help to keep the engine bay much cleaner over time and they also prevent most road debris from kicking up and causing damage to the components on the underside of the vehicle. I recommend that you leave them in place.
Just do what I did to my wife's 2004 RX330 to make transmission fluid drain-and-fills much easier and faster. Cut a 3-inch diameter hole in the underbody cover directly underneath the transmission pan drain plug. I used my electric jigsaw and made the cut on the underbody cover without even removing it from the vehicle. The hole you create will allow you enough room to get your socket wrench to the drain plug as well as enough clearance to allow the old fluid to drain into your catch bucket without making a mess. Now my transmission fluid drain-and-fills (every 30,000 miles for our RX) are easy and take no more than 30 minutes with most of that time being allocated to allowing the old fluid to drain as much as possible....
Thanx NC,I have thought of doing what you suggested.The only part I`m not understanding is why didnt they use these on the early models? Better engineering I suppose right? BTW,did you drop your transmission pan yet? I`m curious as to what filter is in their metal or paper.