95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

Factory locker operation?

Old Dec 1, 2002 | 07:16 PM
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Factory locker operation?

Just purchased a 99 SR5 4runner with a V6, 5 speed and factory installed rear locker. I really love the vehicle but am unable (I think) to get the rear differential locked. I put the vehicle in 4 low then press the "RR DIFF LOCK" button on the dash, the ABS light comes on and the differential lock light starts to flash but never stops flashing. Am I missing something? Maybe I need to drive forward a bit? I hesitate to drive until the differential is locked. Any insight or advice would be appreciated.
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Old Dec 1, 2002 | 07:38 PM
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It's very rare that the locker engages right away. You have to drive forward a little bit for the splines to line up. It helps to drive in a "S" pattern.
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Old Dec 1, 2002 | 07:40 PM
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My abs light does not come on, but I am pretty sure that my "rear diff lock" light flashes the entire time it is engaged.
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Old Dec 1, 2002 | 07:47 PM
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Originally posted by PhxTRDRunner
My abs light does not come on, but I am pretty sure that my "rear diff lock" light flashes the entire time it is engaged.
The RR DIFF LOCK light should stay solid once the locker has successfully engaged.
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Old Dec 1, 2002 | 08:03 PM
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I just went out and checked, my rear diff light just flashes constantly, no matter what I do. I didn't know it had to be in 4wd to use it, so I haven't even tried to do it before correctly. But, is there something I can check to see why it doesn't work? I am already taking the truck in to Toyota for the gas gauge TSB, so I'll just have them look at that while its there. My 4wd engauges correctly and works, but my diff just flashes??

any ideas?
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Old Dec 1, 2002 | 08:08 PM
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Before you go running to the dealer, check it again. You have to be in 4WD-LOW for the locker to engage. That safety can be disabled with a little wiring if you want (instructions are on my page).
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Old Dec 1, 2002 | 08:09 PM
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Ahhh..I haven't even had my Runner in low range yet, hehe I'll go out right now and try it out!
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Old Dec 1, 2002 | 08:14 PM
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OK, nevermind, works perfectly. So I'm still learning about my newly aquired Runner!

I am curious though, is it safe to wire out the diff lock to work in 2wd mode and use it as such? Just sounds like there's some fun to be had in 2wd + TRD SC + rain I know, I know, dangerous...but surely sounds like fun doesn't it?
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Old Dec 1, 2002 | 08:26 PM
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Originally posted by PhxTRDRunner
I am curious though, is it safe to wire out the diff lock to work in 2wd mode and use it as such? Just sounds like there's some fun to be had in 2wd + TRD SC + rain I know, I know, dangerous...but surely sounds like fun doesn't it?
Yup, that's exactly why the factory wired it that way.
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Old Dec 2, 2002 | 06:14 PM
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Tried again to operate the locker, in 4L pressed the button and after moving about three feet I got a solid RR DIFF LOCK indication. Thanks!
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Old Dec 2, 2002 | 06:23 PM
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Tried again to operate the locker, in 4L pressed the button and after moving about three feet I got a solid RR DIFF LOCK indication. Thanks!
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