rear locking diff problems - Toyota Tundra Forums : Tundra Solutions Forum

rutridr · #1 (**permalink**) 02-16-2008, 11:04 AM

i have a 99 tacoma and i cant seam to get the rear diff to lock i know it has to be in 4low but the light just flashes when i press the button any ideas??

The Phoenix · #2 (**permalink**) 02-17-2008, 12:33 PM

Don't you have to be in neutral to lock the rear??

rutridr · #3 (**permalink**) 02-18-2008, 03:18 PM

i have tried that light still flashes, is it supposed to be on (not flashing) if the diff lock is engaged ?

Quote:

Originally Posted by The Phoenix

Don't you have to be in neutral to lock the rear??

The Phoenix · #4 (**permalink**) 02-18-2008, 05:30 PM

Quote:

Originally Posted by rutridr

i have tried that light still flashes, is it supposed to be on (not flashing) if the diff lock is engaged ?

Flashing means it is not engaged. To shift into 4low, you must be in neutral first, then press the button for it.

rutridr · #5 (**permalink**) 02-19-2008, 05:24 PM

then there is definatly something wrong with it any ideas were to get started ?

The Phoenix · #6 (**permalink**) 02-19-2008, 09:45 PM

Quote:

Originally Posted by rutridr

then there is definatly something wrong with it any ideas were to get started ?

RTFM!

But the truck must be in 4 high, then shifted into neutral, 4lo engaged, then put back intro drive before it will engage. Just the way I remember doing it.

If it continues to flash, you might have to go to the dealership.

sizzler · #7 (**permalink**) 02-22-2008, 04:52 PM

You should be in 4-low unless you've done the gray wire mod.
Then when it flashes you slowly move forward and turn the wheels a bit.
It should go in with a clunk.
Mine sometimes takes up to 30 seconds to engage.
If it still don't work then "The Phoenix" is right.
You could always try to fix it yourself.

TUNDRA786 · #8 (**permalink**) 02-27-2008, 06:01 PM

when trying to get in 4 lo you shouldnt move forward or anything you should be at a full stop on fairly level ground. you only roll it or put it in drive and go slightly forward in 4 Hi. In 4 hi you can be on the freeway where ever just hit the switch and keep it under ~60 (the speed is 62 or something on the Tundra im not sure what the speed is on the Tacoma.)

tundra05_trd · #9 (**permalink**) 03-01-2008, 09:39 AM

Quote:

Originally Posted by rutridr

i have a 99 tacoma and i cant seam to get the rear diff to lock i know it has to be in 4low but the light just flashes when i press the button any ideas??

Try putting it in 4low then push the locker button. Get on some dirt(or anything but pavement) and turn left and right a few times. Sometimes you need to get the axles turning different speeds to get it to engage.

I had a 99 taco and this worked every time. Hope this helps!