Wally - 9-16-2012 at 09:31 AM
If you've got a 4Gen 4Runner you probably have this issue. Toyota issued a TSB for replacement a couple of weeks ago.
http://www.toyota120.com/forum/showthread.php?t=23297
David K - 9-16-2012 at 10:35 AM
Very nice of you to think of others...
For non-Toyota folks: A TSB is a Toyota (or Technical) Service Bulletin. It means that enough Toyotas have experienced an issue for Toyota to let
their service technicians know about it and provide a fix for it. TSBs are posted online by Toyota forums so you can print it out and take with you to
avoid any argument.
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My 2005 Tacoma had one for the 'Harsh Ride' as they called it, I called it 'too soft springs' so my truck would bottom out with any extra load in
back. Sadly, I did know about TSBs then nor did my service dept. offer to fix the issue when I complained... so I paid Off Road Warehouse to add Ride
Rite Air Bags and Bilstein 5100 shocks, problem solved! Toyota's free fix is to replace the three leaf springs with 4 leaf. From what I hear, my
solution works better.
(My 2010 Tacoma has never had that problem, even though it is still a 3 leaf spring... so better springs, I guess?)
jbcoug - 9-16-2012 at 11:21 AM
David, Why would Toyota need such a thing? 
John
Wally - 9-16-2012 at 11:25 AM
Not just Toyota. Every manufacturer issues them.
.