KC98LS

Hi all,


I recently had an issue with my 1998 LS400's moonroof panel. The issue was the panel would rattle when it was hot outside, or when the sun was shining directly on it, causing it to heat up.

Generally this happened when it was around 70-80+ Fahrenheit outside, or hotter, and as I ran the AC in the car, it would stop making noise altogether.


I talked to an auto glass professional that I know. We found that the panel has a lot of play in it, when pressing up when the panel is in its fully closed position. He said to clean the panel +molding/seals with glass cleaner, and then apply silicone spray to the molding/seals, and lubricate the mechanism with multi purpose lubricant (WD40 style stuff).

I did that, and it seemed to help with the play in the panel slightly, but now my panel is rattling like crazy when I drive, and there is more wind noise. It gets worse as I go faster.





Any ideas on what to do? This is one of those situations where cleaning something seemed to have a detrimental effect. Should I just apply more silicone spray?

RA40

iTrader: (6)

This sunshade noise has existed in enough Toyota cars since the 80's. The simple fix is to wedge something into the shade to prevent it from rattling. There are a few threads about fixes I haven't reviewed them in some time and don't recall what part can be replaced.

billydpowe

iTrader: (1)

bottom line is, take your trim off and see the problem so you can fix it.... or, wedge it and forget it...

dicer

So is the rattle when it is closed? If so the seal is worn. You could do my wire tie shim deal to tighten it up.
If it is the movement mechanism that is allowing movement up and down, then the sliding roof guides could be worn ???
http://www.lexussouthatlantaparts.co...rimLevel=19107


And I would not use silicone spray. Use a rubber protectant or rubber lube.

KC98LS

Thanks for the responses everyone.

It rattles when it is in its fully closed position. Below is a video example of the movement in the rear of the panel. My phone's camera isn't very good so apologies in advance for the low quality.

Any ideas on where I would use a shim? I'd rather not take everything apart. I also checked all of the screws I could get to, and they all seemed perfectly tight.

https://www.dropbox.com/s/7g9rj1y429...04.07.mp4?dl=0

dicer

That is the track mechanism that has some wear that's what it looks like to me. I think, unless the nuts are loose. You can check by removing the plastic side covers. I use a plastic pry bar and carefully just hook the plastic cover and pry it about 2 inches from front and rear, that will expose the nuts.

valex

I have a 99LS, here's what worked for me - close completely (it rattles a bit in that position), them move it back 1" and the rattle stopped in that position.

Val

sha4000

iTrader: (1)

Mines has the same exact play and I've readjusted all the nuts extensively as well as applied some of that Honda lube. I just live with t for now.

yelloiroc

This thread is magic. I was also able to replace the seal without removing the sunroof (because I tripped one of the screws). Because of the clear direction and photos in this thread, I was able to complete the task at dusk into the night with the aid of a small lamp. Total time after giving up on removing the stripped screw was about 35 mins.

Purchased weather seal from Amazon for $35 shipped. However, I think they noticed their error and have now applied an exorbitant shipping fee.

r4nd0

<deleted> ... somehow posted to wrong thread

timmy0tool

iTrader: (7)

happens a lot because of the "related thread" that gets pasted at the bottom of your primary thread, which is suggested by the site algorithm.

4GS350

edited, wrong section

400fanboy

I disable that on every single forum I ever make an account and interact with.

One of the worst "on by default" features IMO.