4x4 low light on and also (ABS) light on too

Turn off 4 wheel drive. You can disengage the transfer case by selecting 2wheel drive then abs should function properly.

If the evap system is leaking then the overall vacuum pressure will be low. Had this same problem on my Dodge Ram 1500 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

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4X4 Truck makes roaring noise in the front end?

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

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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

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No 4x4 light on dash?

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

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4 wheel drive system will not disengage?

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

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

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

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2002 Jeep Wrangler: 4WD Idiot Light is ON?

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

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

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

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

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

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

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

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

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

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4x4 will not engage on Ford F150? http://technoanswers.blogspot.in/2012/02/4x4-will-not-engage-on-ford-f150.html

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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

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Ford 4x4 front wheels will not engage?

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

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These details will help.

Thanks.

The 4x4 will not engage unless the ABS is in proper order the reason being. ABS cannot operate in a 4x4 engagement,and in return the 4x4 will not hi or low without the ABS concerns corrected the solution fix ABS and the 4x4 switch goes back to normal operations

Check speed sensors on the front.Clean them with a non chlronated brake cleaner this most likely the problem.

Pulling code's from the 4X4 control module would point to a diagnostic procedure . Do you own a professional type scan tool that can read DTC'S - diagnostic trouble code's in the 4X4 control module ? Autozone , advance etc.... can not read these code's .
Which transfercase does it have ?
Transfer Case - BW 4482-NR4
Transfer Case - NVG 246-NP8

How many buttons for 4X4 three or four ?
The BW 4482 transfer case features a 3-button shift control switch located on the instrument panel
The NVG 246 EAU transfer case features a 4 button shift control switch located on the instrument panel
When the ignition key is in the RUN position, the transfer case shift control module monitors the transfer case shift control switch to determine if the driver desires a new mode/range position. At a single press of the transfer case shift control switch, the lamp of the new desired position will begin flashing to inform the driver that the transfer case shift control module has received the request for a new mode/range position. The lamp will continue to flash until all shifting criteria has been met and the new mode/range position has been reached, or has been engaged. Once the new mode/range position is fully active, the switch indicator lamp for the new position will remain ON constantly.The 4X4 system with four button shift control can set a number of DTC'S
DTC B0790
DTC B2725
DTC C0300
DTC C0305
DTC C0306
DTC C0321
DTC C0327
DTC C0359
DTC C0374
DTC C0379
DTC C0550
The three button switch can also set an store a few codes
DTC B0790
DTC B2725
DTC C0306
DTC C0327
DTC C0329
DTC C0359
DTC C0550
Without knowing if any of these DTC'S are stored can't suggest any type of repair .

you cannot run your truck normally in 4x4 low!!!! the low is designed to go slow slow.try shifting into neutral gear on column tap the high 4x4 then shift to reverse,back up 15feet then shift to drive.it should go into high 4x4 then if you want to go back to 2wheel high shift to neutral tap the 4x4 high until the light goes off,shift to reverse and back up 15feet then shift to drive and the 4wheel drive lights should all be off. then you'll be in 2x2 rear wheel drive. thank you for choosing fixya.com

does it have auto hubs, if so check the vacuum switch at tranny side

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_4c166ba81493f541

Your best bet , take it to a qualified repair shop . Service 4X4 light's blinking . DTC'S - diagnostic trouble code's stored in the 4X4 control module.

my4x4 is stuck and can't change back to 2w drive