In an effort to try and contribute to the most amazing vehicle forum ever which I've used extensively (mostly in the 80 Series forum). Here is a write up for how to replace the liftgate regulator assembly in a 2nd generation Sequoia (2008 Platinum).
My first clue that I had an issue going on was sound like coarse sand moving inside the lift gate when I'd open and close it. This was next followed by the liftgate window going down and not wanting to roll back up. The first time it did it I of course was on a family vacation and luckily by trying to "help" the window back up by pulling on the top while activating the motor was able to get it up and left it that way the rest of the trip. I used if fairly consistently after returning without the same issue again. That was until the night before we were leaving on another family trip with 6 people in the truck so not being able to roll down the window was going to be an extreme inconvenience. I opened up the liftgate the find the tracks that the window slides up and down on looked like they were from a 1988 truck, not a 2008. From what I read this is common on these as the metal the components of this assembly are non coated steel. Probably the worst designed part I've ever seen on my 25 years of owning almost exclusively Toyota and doing 99% of all the work needed on them.
If you don't have a problem yet I would highly advise opening the hatch and coating it with a corrosion inhibitor of your choice as a preventative measure since this is just a poor design choice of metal with all the moisture it is apparently exposed to at the bottom of the assembly. I coated mine in fluid film as mentioned later prior to installing the new regulator.
The issue stopping the window from coming back up was the thin part on the edge of the metal track that had completely rusted away leaving a part so thin it got caught and bent by the moving carriage that the window mounts to and stopping it from going past. I actually removed an inch or so length of that rust edge the fist time I was in and diagnosed the problem to be able to get the window to go up. You can see this area on this picture where the material is missing
It would advise after seeing the issue and researching online that if you have this problem to open it up and at least get the material out of the way and not force it back up. I got lucky but if you break the plastic mounting tabs off of the window you have to replace the whole glass as well.
So onto the write up.
Start by removing the plastic cover from the pull down handle by sliding it upward. Then remove the 10mm bolt and handle.
My first clue that I had an issue going on was sound like coarse sand moving inside the lift gate when I'd open and close it. This was next followed by the liftgate window going down and not wanting to roll back up. The first time it did it I of course was on a family vacation and luckily by trying to "help" the window back up by pulling on the top while activating the motor was able to get it up and left it that way the rest of the trip. I used if fairly consistently after returning without the same issue again. That was until the night before we were leaving on another family trip with 6 people in the truck so not being able to roll down the window was going to be an extreme inconvenience. I opened up the liftgate the find the tracks that the window slides up and down on looked like they were from a 1988 truck, not a 2008. From what I read this is common on these as the metal the components of this assembly are non coated steel. Probably the worst designed part I've ever seen on my 25 years of owning almost exclusively Toyota and doing 99% of all the work needed on them.
If you don't have a problem yet I would highly advise opening the hatch and coating it with a corrosion inhibitor of your choice as a preventative measure since this is just a poor design choice of metal with all the moisture it is apparently exposed to at the bottom of the assembly. I coated mine in fluid film as mentioned later prior to installing the new regulator.
The issue stopping the window from coming back up was the thin part on the edge of the metal track that had completely rusted away leaving a part so thin it got caught and bent by the moving carriage that the window mounts to and stopping it from going past. I actually removed an inch or so length of that rust edge the fist time I was in and diagnosed the problem to be able to get the window to go up. You can see this area on this picture where the material is missing
It would advise after seeing the issue and researching online that if you have this problem to open it up and at least get the material out of the way and not force it back up. I got lucky but if you break the plastic mounting tabs off of the window you have to replace the whole glass as well.
So onto the write up.
Start by removing the plastic cover from the pull down handle by sliding it upward. Then remove the 10mm bolt and handle.
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