1990LS400

What hump? (Why don't you look at a newer GS to see if that "hump" is acceptable to you. Others can't tell if it is acceptable to you.)

Have you check the fuses? There are usually two fuses for Toyota audio systems.

How many miles are on your RX? The reason I ask is that rotors can last way over 200,000 miles on most vehicles made by Toyota. For example, at 140,000 miles, the original front rotors on my 2000 LS400 are still at exactly the same thickness as when the car rolled out of the factory. I don't know where you live but here in the Midwest, my indie Lexus trained mechanic installed new front OEM brake pads and machined my rotors for about $225. That's so cheap and he does such a great job that it's not worth my time to do it myself. Some people say that it is not necessary to machine the rotors when doing a brake job. I say bullsh!t to that. Do the job right and avoid any hint of brake pulsing. Do your front brake pads need to be replaced? Are you getting a "low pad" warning or have you measured your brake pad thickness with a gauge? Minimum pad thickness on my car and most Toyota vehicles is just one millimeter and it's a waste of money to replace them prematurely.

That your transmission works OK some of the time is a good sign. The problem may be as simple as a bad transmission solenoid or switch. My suggestion is to take your RX to either a Lexus dealer or to a mechanic who specializes in Lexus for diagnosis. I recommend that you do NOT take your RX to one of the chain transmission repair shops like AAMCO!

I've long noticed that Toyota tends not to make as many changes to vehicle features on a running basis as many other car makers. Toyota is more likely to introduce new audio system features when a major model redesign is introduced ... as when an "Auxiliary iPod/MP3/Windows Media Audio (WMA) port" was added as standard equipment when the generation 3 2010 RX was introduced in 2009. Look on the bright side. There are a number of very nice, inexpensive aftermarket solutions available for your RX and for most 2001-up Lexus vehicles. I wish I had your aftermarket audio solution choices for my 2000 LS but I'm going to tough it out for a few more years.

jaswood is speculating that your transmission (gear box) is failing. He said that this is common on a 1999 and 2000 RX300. If jaswood is right, whether or not you can repair your transmission yourself depends on your mechanical skills.

I've never heard of Toyota putting an aux-in port on the back of any of their radios. There may be been a dealer installed option available but I don't see one in the official option list for a 2008 RX350. There are a number of aftermarket solutions including popular ones from http://www.vaistech.com/dev/home.php

You should be able to figure it out with the attached audio system diagram for the 1997 ES300. It's from the subscription based ARRC website which is available through many public libraries. 1997 ES300 audio diagram.pdf

If you are referring to part number 85720‑60080 (MOTOR ASSY, POWER WINDOW REGULATOR, REAR LH) I see one at http://www.lexuspartsnow.com/parts/lexus-motor-assy-power-window-regulator-rear-lh~85720-60080.html Attached is a diagram so you can verify if this is the part you are looking for.

I could be something else vibrating ... maybe remove the golf clubs, mother-in-law, etc. from the trunk and all the junk from inside the car and see if the rattle is still there. I had a nasty buzzing in my previous LS and looked all over trying to find it -- it was a loose setting in a ring I was wearing! If it's the subwoofer rattling, I think I remember a thread on this forum or ClubLexus about someone eliminating a subwoofer rattle with strategically placed superglue. There is zero rattling from the Nakamichi subwoofer in my 00 LS although I can sometimes feel the base through the seats and the steering wheel.

Is this situation new? Is your transmission in fourth gear? (i.e. count the shifts.) Are you detecting slippage?

The OP has an RX300 - not an RX350 which is what your TSIB is about.

If I remember correctly, the owners manual for my LS says only that a blinking A/C light indicates a problem and that the A/C system should be checked. Is your A/C still producing cold air? If the refrigerant level happens to be low, the compressor is supposed to automatically turn off. If it is low it may not be good to try to force it to run since the refigerant also lubricates the A/C system. Your RX probably has a "sight glass" at the front of the car near the condenser where one can get a ball park idea of the refrigerant level.

You should be able to find it in diagrams at http://lexus.sewellparts.com/oem-catalog/7503750288-Body-LS400-1998.html Be sure to register on Sewell's website if you buy from them ... you would get a significant discount off retail.

The tire speed rating you want for your car is "H" (130 mph) but the tire shop may have insisted on installing "V" rated (149 mph) tires due to your cars 137 mph electronically limited top speed. "H" rated tires often give a softer ride and usually last longer than "V" tires. I have H-rated Michelin Primacy MXV4 tires from Costco on my 149 mph LS400 and I certainly am never going to go that fast ... maybe 75 mph with the recent increase in Kansas speed limits. I strongly suggest than you buy a digital tire gauge and a cheap electric air pump made for airing up tires so you can check your tires when they are cold. Advance Auto would be a good place to look and it shouldn't cost you more than $30-$50 for both. It's handy to keep an air pump in the trunk and some will fit inside a pare tire.

Is it the door chime or the sunroof open chime? If it's a door chime it's probably a bad/stuck switch on the door. Is your interior light also staying on?

According to http://www.lexus.com/contact/pdf/1994/1994SCspecs.pdf , a rear spoiler was not an option on the 1994 SC300 - only on the SC400. The specs on the Lexus website, however, are usually accurate but I've seen at least one error. If your SC300 has a high mounted stop light or remnants of one in the rear window, then your spoiler is definitely aftermarket or maybe a dealer installed OEM one meant for the SC400. This is very common. My wife's Camry has a factory rear spoiler but I see lots of other Camrys that have an identical spoiler that I can tell is aftermarket due to there being a high mounted stop light in the rear window in addition to the LED brake light in the spoiler. Have you removed the trunk lid trim to look for bolts holding the spoiler on? If it is an aftermarket spoiler, the trunk lid will, of course, be painted under it although the paint under it may not match the rest of the car due to no sun exposure. I would be surprised if the trunk lid isn't fully painted even if your spoiler was factory installed.

Looking in the owners manual for the U.S. 2001 RX300, I don't see a fuse specifically for the seat memory -- only see one for the power seats. The repair manual set for my 2000 LS has an 18 page section devoted to diagnosing seat memory problems so I assume there is a similar diagnostic procedure for your RX. If you can't get hold of this information, you can download it and lots of other diagnostic and repair information for your RX from https://techinfo.toyota.com with a 2-day US$15 subscription.

You bought this P.O.S. without an inspection? :chairshot:

80' = 80 feet. Those are some long sticks! You mean 80" or 80 inches. I measured and am certain I could easily get 80" sticks or a few 2x4 boards inside our 98 Camry which has essentially the same interior space as your 2000 ES300. Move the passenger seat forward and recline the seat back as much as possible. From the back door put your "sticks" all the way into the passenger side foot well and lay them on the fully reclined passenger seat. You would probably want to use blankets or similar for padding so you don't trash your interior. My 205 mm snow skis easily fit inside our 98 Camry. 205 mm is equal to 80.7 inches.

The sender is less than $60 from http://lexus.sewellparts.com with a car forum discount. Is it harder to replace than it looks? Or I guess you could pretend that it's a 1950's VW Beetle that didn't come with a fuel gauge and use a stick to check fuel level.

Exactly what did you do to solve the problem?

Amazingly, some people modify leased vehicles with aftermarket parts. Many remove the aftermarket parts and reinstall the OEM ones but some don't bother. Not many people modify suspensions on the ES but Lexus forums are filled with mostly younger people who do. From my experience, "tire monkeys" rarely bother to put the correct amount of pressure in tires -- even at Lexus dealers. I rarely had very close to the correct amount of air put in a tire - typically the pressure is too high by at least 5 psi but I've had tires over-inflated by well over 10 psi. Tire pressure makes a big difference in ride quality. I can tell when my tires are too low or high by a couple of psi and even when one tire is lower than others ... but I'm a bit obsessive. And I carry digital tire gauge in the car and check the tires at least every two weeks or more often when there are significant day to day temperature changes. I even carry an electric air pump in the trunk and use it fairly often when driving a few hundred miles north in the winter where it can be cold enough that I need to add pressure to the tires. Be sure to check the lug nut torque after driving your new tires 100 miles or so. Whoever sold you the tires should have told you this and/or asked you to bring your car back in to have the lug nuts re-torqued. The lug nuts on most Toyota vehicles should be torqued to 76 ft. lbs. Unless I witness wheels being reinstalled on my car, I check the lug nut torque as soon as I get home since improperly torqued lug nuts can cause brake disk warping. I once had a Lexus dealer employee torque lug nuts to over 125 ft. lbs. and I had to use a "breaker bar" to loosen the lug nuts so I could torque them properly.

Blake bought a 2010 Prius around early September 2010. A photo of it is now his avatar on this forum.

Here is your previous thread about your A/C problem: http://us.lexusownersclub.com/forums/index.php?showtopic=70097&st=0&p=436923entry436923 It's better to keep all the posts regarding a problem with one thread rather than to start new ones for questions about the same problem. In your previous A/C thread, you said that your A/C was losing its refrigerant every 3 to 4 weeks. I don't understand how replacing a fuse can solve your A/C's leak problem. As I said your other thread, you need a competent mechanic to add dye to your A/C's refrigerant and check for leaks using a black light. That is the standard procedure. It should be easy to find a leak as severe as yours.