Toyota Support Case No. 073530088 Issued For Sinking Seat Syndrome
dukeofjuke previously said:
My dealership was issued a Support Case Number by Toyota Motor Corporation based on my complaints about the driver's seat gradually sinking from its highest position to its lowest position.
When my FJ was new, I thought my sinking seat was merely an inconvenience, but it quickly progressed into an annoyance followed by a genuine concern for my safety and the well being of the occupants in my vehicle. I now realize that this situation may develop to a point where the driver's seat may suddenly and without warning drop from an elevated position while the vehicle is in motion.
My Southeast Toyota (SET) dealership and Toyota Corporation share my concern for the safe operation of my vehicle as evidenced by the issuance of a support case number. Now it's time for all FJ owners plagued by this problem to insist that their respective dealerships formally document their "sinking seat" problem by notifying Toyota Corporation. Please refer your Toyota Service Advisor to Toyota Support Case No. 073530088 and you can mention that this support case number was issued to Toyota Of Melbourne, 24 N. Harbour City Blvd., Melbourne, FL 32935 (321) 254-8888.
By the way, I know one forum member whose seat (refer to thread "Sinking Seat Syndrome" dated 07-24-07) was replaced under warranty by his dealership and sent to Toyota in California for evaluation. Hopefully, his defective seat, my Support Case Number and all forthcoming forum members' complaints will provide the impetus for Toyota to solve this problem and issue corrective action in the form of a Technical Service Bulletin (TSB).
I'm pleased to report that my dealership finally agreed to replace my sinking driver's seat after thirteen (13) months, five (5) service visits and 27,191 miles.
The proverbial "squeaky wheel" got the seat but I could not have done this without the help from all the forum members who posted their SSS (sinking seat syndrome) complaints. During every service visit, I gave my service advisor copies of all the recent posts regarding SSS. Finally, a post by forum member "bph" on 08-24-08 tipped the scale in my favor. bph reported that his driver's seat failed in a dangerous manner and his dealership replaced it under warranty.
Please be advised that a Technical Service Bulletin (TSB) has NOT been issued for this problem. My service advisor said that Toyota made a change to the driver's seat as evidenced by a revised part number 71020-3D032-B0 SEAT ASSY, FR LH. As the result of this part number change, my documented complaints and the help from my fellow forum members, my service advisor said the replacement of my seat was warranted.
I find this very interesting since the 2003 up 4runners still have seat problems with the manual versions of their drivers seats. I cannot believe Toyota has not fixed this yet!
Toyota - 4Runner . org Forum - Driver seat movement
Toyota - 4Runner . org Forum - Seat problem part 2
Toyota - 4Runner . org Forum - Seat Problem Part 3
Toyota - 4Runner . org Forum - Clunk/Loose Drivers Seat
Here is an older (2003) but very informative thread on the seat issues the 4runner has been seeing. The second page has the best information:
Toyota - 4Runner . org Forum - 03 4Runner seat rattle
Lastly, and most importantly, you need to make them aware that you are concerned for your welfare because this defective seat could potentially fail suddenly while driving and injure you, the occupants of your vehicle or any other vehicles in harm's way. Check out bph's post on 08-24-08 where he reported "my seat height adjuster completely failed today. It felt like I was going to fall into the back seat when it let go. A bit scary to say the least." This will get your dealership's attention.
The TSB for this appears to be 0334-08, according to my repair ticket.
The seat seems identical to the original. Well, maybe a bit harder
because I haven't had two years of breaking it in. The arm rest doesn't
feel like it pivots forward quite so much. Maybe 10 degrees less forward
pivoting. Not an issue for me since I always lift it up a bit. Otherwise,
no immediately obvious differences.
Your test for "sinking seat syndrome" aka SSS is straight forward. Elevate your seat to the highest adjustment possible and then wait at least five (5) days. After the fifth day, pull up on your seat adjuster lever. If the seat cannot be adjusted any higher, your seat is not sinking. If the seat is able to be pumped even one notch upward, then your seat suffers from SSS.
Note: Make sure that no one drives your FJ during the test period otherwise the adjustment my be compromised. Also, be aware when you enter and exit your vehicle that you don't accidentally catch the adjustment lever on your clothing.
By the way, my old seat sank faster as the FJ got older. My new seat does not sink at all.