4x4 wont engage when shifter is put in all 4wheel positions drives fine in 2wheel drive

SOURCE: Shifting in drive from park position

that means the pin that the knob presses down is stuck on something. if you take the shifting panel off it showes everything. then there will be a plastic guide. see what the pin is sticking on and there you are.

SOURCE: 2002 kia 4x4 wont go into 4 wheel drive

Hello
A VERY COMMON FAULT!
Kia us a dim design that works on air, so the light on the dash may light up green...mine does...but no 4x4.
Test one, look inside the engine bay,(2Litre petrol) on your left hand side, to the left of the actual engine is the solenoid device that "switches on" the vacuum to the front hubs. This is easier that you would think. If you look at the left side of the engine, there are two pipes coming out (left side) one is thick (break system. DONT touch) one is thinner and soft rubber. Follow this tube, it goes into a small black cannister which is a resvoir and one way valve...the tube then outputs into another device (solenoid) which has 2 wires on. The tube then splits under this in two. The test is simple, with the engine running, and 4 wheel drive engaged pull the tube apart after the solenoid. Put your finger there you should feel a nice strong ****. If it does **** put it back on. If it does not **** it needs to be removed and cleaned. This is simple to unbolt and all you do is pull the rubber bung of the bottom, and the two tubes and spray break cleaner inside. reassamble until you get to feel the vaccum.

test 2 Now look behind each wheel, you will see a thick hose wrapped in a spring, this is the break system, do not touch this. There is a thinner flexible hose attached behind the wheel, you will notice that these have no securing system just push fit. Remove each of the in turn and test for vacuum.

Leaks here are common and easy to fix.

The bad news if you have vacuum, and still no 4 wheel drive one or both front wheel hubs has a leak, and the bad news is, it needs a garage to fix it, and to replace the seal a £5 part you have to ruin a £100 part.

Test the vaccum, pray. Otherwise ask, doe you really need to spend £250 to sort this?

Good luck

SOURCE: will not shift into 4wheel drive

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.