4WD (low side) will not engage. Light blinks and buzzer sounds. Replaced the front actuator - did not correct. It is a 2007 Tacoma SR5 with a 6 speed standard transmission.

For your four wheel drive to engage, the front diff actuator has to go into 4wd and then sends confirmation to 4wd ecu which in turn engages ur transfer case (center lock) If frame was just replaced, i check the connector on top of your front diff and make sure its plugged in as this would be a definite cause. Let me know how you go.

check for 4wd actuator problem Check for power activation and check for vacuum line connection. Lastly check that the hubs are correctly selected as if one side has not properly engaged it will feel like there is no 4WD

4X4

On these issue, there are few solved help links for troubleshooting the issue easily.-------

Click the link below: ---

No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

-----------

4X4 Truck makes roaring noise in the front end?

http://schematicsdiagram.blogspot.com/2012/01/4x4-truck-makes-roaring-noise-in-front.html

-------------

Car will not go into 4WD high or 4WD low?

http://schematicsdiagram.blogspot.com/2011/12/car-will-not-go-into-4wd-high-or-4wd.html

--------------

No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

------------

4 wheel drive system will not disengage?

http://technoanswers.blogspot.com/2012/01/4-wheel-drive-system-will-not-disengage.html

----------

4WD light is flashing and beeping? NO 4WD high?

http://schematicsdiagram.blogspot.in/2012/02/4wd-light-is-flashing-and-beeping-no.html

----------

2002 Jeep Wrangler: 4WD Idiot Light is ON?

http://technoanswers.blogspot.in/2012/06/2002-jeep-wrangler-4wd-idiot-light-is.html

----------

Traction control switch will not engage on 4WD High or Low

http://whoisbyme.blogspot.com/2012/10/traction-control-switch-will-not-engage.html

-----------

4WD light flashing and 4WD will engage after few minutes

http://repairhelpcenter.blogspot.com/2012/10/4wd-light-flashing-and-4wd-will-engage.html

------------

2008 Toyota Tundra: 4x4 Wheel Drive Light is Flashing?

http://technoanswers.blogspot.in/2012/05/2008-toyota-tundra-4x4-wheel-drive.html

----------

4x4 front differential will not engage the axle on ford?

http://technoanswers.blogspot.in/2012/02/4x4-front-differential-will-not-engage.html

-------

4x4 will not engage on Ford F150?

http://technoanswers.blogspot.in/2012/02/4x4-will-not-engage-on-ford-f150.html

-------------

Dodge Ram 4x4 light keeps flashing

4X4 LOW LIGHT IS FLASHING ON DASH

http://technoanswers.blogspot.in/2012/09/dodge-ram-4x4-light-keeps-flashing.html

----------

Ford 4x4 front wheels will not engage?

http://technoanswers.blogspot.in/2012/02/ford-4x4-front-wheels-will-not-engage.html

-------------

These details will help.

Thanks.

try pushing button and then put in reverse back up a bit and then put in drive see if it goes in quicker. put truck in nuetral befor putting into 4 low

This sounds like the factory service light what is the mileage?

There are several actuators on a 4thGen 4Runner. They are expensive to replace. The 4WD high and low and difflock MUST be exercised or the actuators will get gummed up and not operate. A good rule is to run the 4WD (all modes) for a while every month.
If they fail, they have to be replaced. The front actuator at a dealership may cost $700 to $800. The actuator on the transfer case that switches it to 4-Low could be as much as $2500 as the whole transfer case has to be taken out and rebuilt.
I *strongly* suggest having this done by a mechanic that knows what they're doing with 4Runers.
You've probably already found this out.

Good Afternoon. We use these type trucks for our plowing during the winter so I am familiar with what you're going through. There is a fuse for the 4wd, and there is an actuator in the front differential. What you might try first is to get under the truck and pull out the actuator and then put it in 4wd if it moves out it is locking in your front end. Hope that helps.

You probably have a bad encoder motor.It is located on the side of the transfer case on the drivers side.It is black.The other problem they had with these was the switch but you have already replaced this so your next thing is the encoder motor.Hope this helps.Good luck.

the 4 wheel drive switch is an extremely high failure part. i would replace it and you should be ok! hope this info helps!

I had a prolem with my 1998 Ford Explorer XLT. The 4wd indicator light would randomly start to blink while moving and when I flipped the switch to 4wd hi or low it would engage but easily disengage and the indicator lights would not come on. I was hearing a grinding sound coming from my hubs so I replaced both front hub assemblies and the light stopped blinking and 4wd hi/low works great now. it was about 300 bucks for the hub assemblies and only took me an hour or two to change.