GA2004SC430

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About GA2004SC430

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  • First Name
    Dave

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  • Lexus Model
    SC430
  • Lexus Year
    2004

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  1. Yes, mine opens and the roof sits down into the trunk the way it should, but the black plastic part behind the back seat stays up and the trunk deck won't close. The rear windows have stayed down the entire time and the red light on the switch says the top is open and it doesn't latch when it comes back up.
  2. I will be able to take it to the local car parts stores in town next week for a diagnostic reading. This has been a tough month financially with all the doctor visits. But thank you so much for all the terrific information on our common problem. We will soon be in for cooler weather here and it is the best time of the year to drive with the top down. Thanks again for sharing you knowledge and information, you have been beyond helpful! Dave
  3. Hi Paul, That is great news! I am glad you were able to quickly and inexpensively repair your problem with the roof. I will be purchasing a scanner so I can determine where my problem is and hope to have similar results as you. Happy to hear you are back to enjoying her with the top down and returning back up when it is needed. Dave
  4. I also found this sequence of operation on the same forum post that looks like a great start! SC430 Sliding roof overview with trouble codes.pdf
  5. I found this diagram on another Lexus forum and thought you might be interested. I wasn't able to clean the limit switched yet, it was a bad weekend health wise for me and was in bed most of the time. Hopefully I will be able to get to cleaning them today. Hope this diagram helps in your documentation of the roof sequencing and operation.
  6. That is a great idea, I will do this later today. My wife keeps saying she is hoping it is just dirt on a track somewhere that is keep it from working correctly. One of the issues with my disability is being unable to sleep through the night so I have been up for the past couple of hours. I am turning 63 in November and have been battling health problems for the past several years so enjoy your good health while you are able. I head to Jacksonville, FL next week to have some tests done and see a couple of doctors concerning some recent developments. I think we have the identical cars at least cosmetically. I took this picture shortly after I bought the car in 2012. We have had problems with the clear coat going bad and had to repaint the drivers door a few years ago. To be honest the entire car needs a repaint at this point. We added the port so my wife could plug in her phone or ipod into the stereo which has worked out well. A couple of years back we had to replace all of the catalytic converters, which the dealer wanted nearly $5,000 to do. I took it to an exhaust shop and had it done for $1,200. She loves this car but at times it is a love/hate thing for me since I am the one taking care of the problems when they happen. Thanks again for the idea on the latching limit switches. I will let you know what happens.
  7. I agree with you, I think it is a limit switch that isn't recognizing the top being closed and therefore keeps the trunk deck up and the back windows down. The locks on the top never engage either and that is one of the big reasons that we can't be driving it on the road unless the top is down and then the trunk deck isn't locked down either. I can't physically do the work due to my disability. When I was younger I would have but now it goes to the mechanic, even for oil changes.
  8. Ok, inspired by your support I went to the garage and worked on her car this morning. The top will go up and down but something is telling the trunk deck and the windows that the top isn't closed. The red light on the top up/down switch stays red and the battery becomes drained. I probably need to invest in the code reader to see what it is saying, at least that would help narrow things down. Thanks again for your inspiration and encouragement!
  9. Wow, you have been busy. As you said there is a lot of engineering that went into lowering and raising that top!
  10. I agree 100%, knowing how something is supposed to work gets you more than half way to being able to fix the problem. I bought ours for my wife six years ago and she loves it and refuses to give it up for anything else. The size fits her perfectly as well as loving the hardtop/convertible feature. If I can fix this top issue and get her back on the road she will be one happy lady!
  11. Paul, Sounds good, I will try your fix and let you know if we have any luck. I probably need to invest in a code reader since she has many lights on as well. I need to put the battery charger on since the roof alarm has drained the battery! Thanks again, Dave
  12. Hi Paul, No I have not and because the top not closed alarm sounds continuously while driving, my car has been sitting in the garage for months. What you describe is exactly what happened with ours. My wife opened the top and she heard something and since then it hasn't worked properly. I will try what you describe here to see if it works for us. Thanks, Dave
  13. I have a 2004 SC430. I put the top down this spring for the first time this year two weeks ago and when I went to close it the top came up and closed but the rear trunk deck stayed up and I haven't been able to close it since. I have disconnected the battery hoping it would reset a switch but no luck. The open/close switch now stays red constantly when the car is running. I have used the manual trunk release to get into the trunk and check what I am able to there, still nothing, What else can I check before I take it to the dealer and pay an arm and a leg? Thanks for any assistance!