Just bought my first 4R few issues

silver2UZ

New member
Hi I just bought my first 4R , 2003 limited forum has been of great help so far in getting the first few projects completed but a few things bugging me still

Overall I love the vehicle but having a few issues. I had it inspected by a garage I thought I could trust they gave it the all clear other than needing some brake work which I could do myself.

Unfortunetly the 4R was not in the most fantastic shape underneath. My theory is that when they decided to sell it they took it out for one good mud run and got it very stuck or even submerged .
Everything on the on the underside is heavily caked it mud clay and sand. I have been blasting it with the pressure washer for almost two weeks before I discovered the only real way to get it all off is to wipe it down by hand. So needless to say I dont have a hoist so I have been lying under the truck wiping it by hand for the last few days now and almost have it totally clean.

I also took off wheel liners, fender flares , fenders, bumpers and washed out everything as there was mud inside everything ! But was a good time to get a small amount of rust off inside of fenders and painted them up with por15 anywhere that was affected inside the fender.

Stuff I have replaced so far
most of the brake lines were rotted out
changed a caliper that was seized, and all the rotors and pads.
Previous owner had already disconnected the Xreas suspension but the springs they had in there were not in great shape and the mount was noisy so replaced both up front with KYB quick struts
Also have changed all fluids , front and rear diff and transfer case, tranny fluid , and of course engine oil.

So now that the front has new struts, focusing on the rear which when I bought it I thought moved up and down like it should but now seems to be stuck in the high position. Wondering if I could have damaged something while pressure washing but cannot seem to find anything obvious like a hose or connector. Everything seems to be in place but the truck is def stuck in the high position.

Is there anyway to manually reset the height of the rear ? Is there anything that is common to get "stuck" ?
I cannot find much on the subject, searching just come up with threads about replacing the system nothing about resetting the height

Overall still love the truck just about to tow with it and it worries me that the rear is not at proper height included a few pics , one that shows the rear is soo high ( thinks its in neutral height ) you can see light above the frame
 

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Welcome to the forum! :)

I'm not sure from your post whether or not you have the optional RAS (rear air suspension) or not. if you do, you would have height control switches in the center console between the seats.

The 4Runner does have a factory rake (slanting towards the front) that makes it appear that the rear end is higher in the air than the front end.

From your pictures, it does not look too much different than mine.

If your RAS is indeed stuck in the high position, I imagine the ride is pretty stiff. My best guess will be that a height control sensor has failed if this is indeed the case.

As to your question of adjustment, here is a thread with a pdf that I posted:

http://www.toyota-4runner.org/4th-gen-t4rs/180384-ras-sensor-adjustment.html

Hope that helps!
 
Thanks for your reply yes I do have the RAS and was just reading that pdf actually great info but not sure it helps me with any sort or reset to the proper neutral height unless I am missing something

Couple more pics , my rear wheel gap is around 9inches , front is around 5 that is a pretty big difference.
The pics in first post where of when i bought the truck two weeks ago and when as far as I know the system was working and I did not have such a huge wheel gap ( I swear when I got I didn't think I could see the top of the frame tube inside the wheel well ? ) it has only recently become "stuck" when I was trying to pressure wash the underside
 
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Also worth mentioning the front struts have been replaced with non self levelling struts. The rear is still factory.
I understand this not to be an issue as the Rear height control and self levelleing xreas are not connected and run independently. Is that correct ?
 
Also worth mentioning the front struts have been replaced with non self levelling struts. The rear is still factory.
I understand this not to be an issue as the Rear height control and self levelleing xreas are not connected and run independently. Is that correct ?

There were never any leveling shocks in the front. It's a rear only option.
 
I think you may be confusing some of the terminology - at least it is confusing me :O

The RAS option takes the place of coils that would be in the back. You mentioned that you were doing some pressure washing on the underside - this could have gotten into the height control sensors - thus causing the rear end to "jack up." What does the height control display on your instrument cluster say? Does it read "normal" or "high"?

As for a reset of the RAS, I'd be going to a Toyota dealership for that if it was me. If water did get into the sensors they just may need to be dried out and reset.

The XREAS is a closed suspension system that is not at all connected to the RAS option. Good until it fails, then you basically have to take the whole thing out.
 
The display reads neutral but there is no way its in neutral is too high.
Hopefully its just a matter of drying out the sensors , anyone have a good picture of their location ?

I know soon enough I will just get rid of this system, especially if the sensors are bad, then I will just do it now.

Thought why not try to see if you can manually bring them back down by letting air out of the system or something along those lines but no one seems to have heard of that yet ?

On another note I have been trying to get a service manual but the links in the sticky no longer work , that would ofcourse help me find the sensor location as well
 

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