2000 dodge durango

If you are referring to your 4X4 shifter not engaging 4 wheel drive, then it could possibly be a blown fuse. Check your fuse box cover for the appropriate fuse and see if it's blown. If so, then go ahead and replace it with the correct fuse. Don't use a lower amperage fuse, it will probably blow even faster, and DO NOT use a higher amperage fuse, that can cause a fire. Then monitor it over the next week or so to see if it stops working again. If it does then it should be taken into your dealership for inspection and service. Fuses tend to blow for a reason, and if it's continually blowing a fuse, then there is probably a short in the system some place. Good luck with it.

Look under your truck and see if the shift lever is connected to the transfer case.
Quite often the cotter pin that holds that together comes out, if that's the case just put a new one in and it will engage and stay engaged.

1. • 1 Start your Dodge truck's engine.
     
   • 2 Turn the electronic transfer case from "2WD" to "4WD Lock" to engage the high range 4WD, if the dodge truck is equipped with an electronic transfer case; otherwise, shift the transfer case lever from "2H" to "4H." The electronic transfer case is located on the instrument panel and is marked with "2WD," "4WD Lock" and 4WD Low." The lever-equipped transfer case is located to the right of your leg and is marked with "2H," "4H" and "4L."
     
   • 3 Shift the transmission into "Neutral" while the vehicle is either stopped or rolling at 2 to 3 mph to begin engaging in the low range 4WD. Turn the electronic transfer case to "4WD Low," if the Dodge truck is equipped with an electronic transfer case; otherwise, shift the transfer case lever from "2H" or "4H" to "4L."
     
   Tips & Warnings
   • Indicator lights will come on and alert you that your vehicle is in either the high or low range of 4WD.
     
   • Do not engage in the low range of 4WD drive if the transmission is in gear; you must shift to "Neutral" first.
     
   • Many Dodge trucks allow you to shift from 2-wheel drive to the high range of 4WD at up to 55 mph--consult your truck's manual to ensure that this is possible. Do not exceed 55 mph while engaged in the high range of 4WD. Do not exceed 25 mph while engaged in the low range of 4WD.
     
   • Do not engage in 4WD unless you are on slipper or rocky roads.
     

That maybe the case however I would check to make sure the linkage from the 4wd shifter did not pop out from the transfer case first.

Very possibly your TCCM or Transfer Case Control Module is on the way out.

You can replace it yourself with a used one for less than $200. If you have it done, the new part and labor will prob run ~$400.

there are 2 systems.
one is a part time system only.the 4x4 locks and is for ice mud and snow.Driving full time will damage the transfer case.The other system is a full time system and the selector says 2wd,4wd part time ,4wd full time and 4 lo. if in full time,it can be driven all the time even on dry roads.The full time is really an all wheel drive system.
the 4low is a very low gear and the main shifter has to be put in neutral and then the transfer case put in 4 low.attempting to put it in 4 low while in "drive" will make a gear grinding noise.
getting out of 4 low is the opposite.shifter to neutral and then put it in 2wd and then in drive.The newer durango has an electronic transfer case with a dial on the dash.The 2002 was available with 2wd,4wd,awd and 4 lo on a switch.The 1999 has the lever on the floor .

check to see if you linkage coming from your selector lever to your transfer case is off. i also have a 2000 durango and the little gromlets (rubber bushings) that hold the linkage bar in place were warnout and i had to replace them. mine wouldn't go into 4 low because the gromlets were worn and alowed to much slack.

You need to get under the suv, there is a linkage under there that has 2 grommets. They dry rot and then fall out. Once that has happened the 2 pins that hold it together give way and the link is broken. If all you need are those 4 parts its $12 at the dealer. If you also need the adjustable metal linkage that joins the shifter to the transfer case you will have to order that too, sometimes it falls off when one end gets loose. It will swing around and hit the drive shaft and get yanked off. If you need more detail let me know.

It should be a linkage rod with nylon clips on each end

hi there, check the shift linkage on the transfer case, it has an adjustment. it might just need adjusting or it is jamed up against the tranny.