I was looking at this same model I think, since it works with the stock fob and doesn't require much wiring. My only concern is that the factory keyless entry would be disabled with the truck running so I couldn't remotely cancel the start or remotely unlock the doors. Do you have to go out...
I've been considering installing something like this too even though I only have slightly oversize tires. There's a writeup on 4x4wire on the Dakota Digital unit that costs about $80 which is a lot cheaper than the Superlift box. Is there an advantage I'm not seeing that makes it worth $200?
Sounds like gear lube to me! That would make the likely culprit the rear axle seal that somebody mentioned above. I can't comment on price, but it shouldn't be too awful.
Does the 99 have a light flashing while the 4wd is engaging? If so, is your problem that the light just keeps flashing and doesn't indicate engaged or that you physically can't shift the transfer case into 4hi?
If it's the light flashing, it might be a problem with your ADD not engaging...
Here's the Edmunds link. The transfer case info is near the end under #6.
http://blogs.edmunds.com/straightline/2009/09/is-the-2010-4runner-trail-grade-the-best-4x4-package-sold-in-the-us.html
Multi-Mode is different but still there!
According to the Edmunds article, the torsen center diff is still standard on the SR5 and TE. It locks automatically somehow, which I'm curious to learn more about, but it can be driven in 4wd on dry pavement from the sound of it.
I can't wait until...
Are you trying to connect to the harness that plugs into the factory head unit? The harness you are looking for is actually the one that connects to the factory amp (no idea why they couldn't fit an amp in that enormous HU). It's mounted below and behind your head unit and can be removed if...