As I'm looking at the inside, it appears the only thing corroded was the 4Hi DC motor, but at least I know why it doesn't work now. Immediately I realized that the breather tube's hole allowed water in the last time I got into water and it has been in there since having no where to go. I then poured the rusty,dirty, water like substance in the actuator onto myself as I opened the case. I took off the bottom cover for the actuator. I hear the single click from the 4WD ECU in the vehicle trying but nothing is happening so I decided to get serious. About a month later the same things happens again with the same repair working, this time it took quite the few taps, a drive, a few more taps, then it all started working again.Ībout another month later it happens again and no amount of tapping, driving, twisting or turning will make it engage. I also noted the breather tube on top had a hole in it so I fixed it. I'm elated that it just seized a little and came right back. After finding out all sorts of things about the transfer case actuator, I go back out to my Runner to lightly tap on the actuator and within 10 taps or so it engages. So I get onto this outstanding website to troubleshoot. A few months later I try to engage the 4WD system to discover it is not operational. While out there I ran into some water obstacles that had some depth but not much difficulty. The story (skip if you just want the DIY part)Ībout 4-5 months ago I went off-roading like any good 4Runner owner. It can be repaired with no manual, no transfer case removal, and no "timing" required.
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