4WD issues?

DCrunit

New member
Hey guys -
I bought a black 02 T4r limited 4wd last summer with 92k miles and have loved it. It's been super reliable and a really fun drive. Im now running into my first issue - or at least I think I am but it could just be user error..

As you guys know the 02 has two gear shifters. the "small shifter" on the left with H-N-L and the bigger one wit P-N-D etc. I drive normally in 2wd-L as the manual recommends. To put the truck into 4wd I just press the button on the side of the "small shifter" and normally the light on the dash starts blinking and then it shifts into 4wd. I havent used the 4wd a lot (or as much as I'd like to) but have had no issues before shifting in and out. It definintely made a noise and you could feel the shift but thats it.

Yesterday I wanted to go into 4wd as we've had some snow. I pulled out of the lot at work and pressed the button going about 15 mph. The light started blinking but there was a rumbling/grinding noise and no shift. i kept driving like that thinking it would shift but the light kept blinking and my rpms just went up as i drove w/o shifting. i pulled off the road into a parking lot to try and sort it out. i clicked the 4wd button again to go back to 2wd and it still was making weird noises. I put it in reverse and it shifted back to 2wd finally. I checked the 4wd again and it made weird noises again and was jerky as i drove. it seemed like the 4wd was engaged but i never heard or felt the shift. I got it back into 2wd and went home.

This morning I tried again to put it in 4wd as we have snow on hte ground. It made the noise again but this time shifted into 4wd a little bit later than normal but much earlier than before.

So my question to you guys is.. is there an issue with the transmission/4wd system or is this just a function of not usin the 4wd enough or something like that? could it just be a lubrication issue? Any advice? I dont want to do any damage but I need the 4wd!

Thanks a ton.
 
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You're actually pretty fortunate that you got it back into 2WD. There is an issue with some actuator on the AWD models that ends up leaving some people stuck in 4WD without any way of getting out.

I would say since you're able to get it in and out using the button, it could simply be a lubrication issue. I'd try shifting it into 4HI and driving a bit, then 4LO and driving a bit, and then shifting back up to 2HI to make sure everything works ok. I'd do that a few times, actually, and make sure you're off-road when you do it. You don't want to be on pavement in 4LO.

Make sure you are in neutral when you do it, sitting still, and do it as seamlessly as possible. If it grinds a lot, you have problems.

Let us know what happens.
 
It's pretty common on these trucks, especially when you don't use 4wd much. Normally the actuator gets stuck or goes bad, but teres really no "lubrication" that can be done- the collar and the fork use gear oil from inside the diff.
How do I know? I just replaced mine last night :)
Keep an eye on it- start saving the $300-ish for an actuator and keep that 4wd exercised! Toyota recommends 10 miles of 4wd driving every month!
 

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