Let me guess you are having your Vehicle Information Center flash and chime "SERVICE 4WD SWITCH"? I have the same problem with my 95 Jeep Grand Cherokee and after much research I have discovered that the 4WD switch usually is not the problem but instead it is the VIC. From model years 94-98 the VIC ribbon wire is faulty in the VIC itself next time the message pops up tap the front of your VIC and see if it stops the message and chiming. If it does you need to repair or replace your VIC (new from dealership is about $600 - $800 depending on your location and their markup).
As for the location of the 4WD sensor it is located on top of the Transfer Case. It is awkward and difficult to get to.(the switch that is) Crawl under the drivers side of the Vehicle just behind the Drivers door there are three different sensors located on and around the transfer case the one you are looking for is located on top of the transfer case near your 4WD linkage it will have four wires going to the clip but in truth only two of those four wires are actually hooked up.(the extra wires and which ones are hooked up depend on your model of transfer case which you can find out by looking at the identification plate riveted to the back of the transfer case itself. You will need the model number when requesting the part. Unless your particular 4WD switch has Vacuum Lines running to it which you will be able to see) In total there are three different cases associated with the 95 model year Jeep Grand Cherokee. You should be able to identify the switch easily enough. There is another switch that is easier to get to located between the transfer case and the forward drive shaft THAT IS NOT THE 4WD SWITCH and the Speedo is located as the farthest back sensor on the transfer case just before the rear drive shaft. Sometimes just changing the fluid in your transfer case will be enough to get rid of that annoying message on your VIC.
As for my Jeep adding fluid did help a little bit but my VIC took a dump. I replaced it with one from the junkyard for $125 bucks no problems since. There is a way to repair the VIC by removing the front bezel carefully and then removing the 4 screws that hold it in place carefully pull it out of your center console and then disconnect the wire harness from it (disconnect your battery first) then remove the six torque screws from the back of the VIC unit and carefully pull the front face from the back piece you will see a ribbon wire not unlike what is in a computer and then shining a light into the spaces where the ribbon goes to the face look carefully at the solder points if any of them seem discolored or missing (they should look shiny and completely cover the wire they are placed on) just carefully add some solder to these points and put it back together again when you are finished reconnect the wire harness and replace it in the console then reattach your battery and start the vehicle it should work like new. (in my case i lost my temper with it before discovering this simple fix and broke the clear plastic front leaving me with no other choice but to replace it)
I hope this information helps!
Man, I cannot thank you enough for this post! OMG I have looked most of the day for information concerning this! Now the only thing to ponder is do I let my husband and son try to fix it or just go get one at the junk yard lol!
Man, I cannot thank you enough for this post! OMG I have looked most of the day for information concerning this! Now the only thing to ponder is do I let my husband and son try to fix it or just go get one at the junk yard lol!
omg.sounds more like a huge head ace, but yes thank you ... rsf
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SOURCE: 1995 Jeep Grand Cherokee keeps flashing "Service 4WD switch".
You will probably find the oil level in the exchange box is low and the sensor is activating.
SOURCE: 1995 Jeep Grand Cherokee problem
there is a wire harness on top of the transfercase check if its loose or clean the connection
SOURCE: 95 grand cherokee oil pressure switch
Use a deep well socket and extension, it lives by the distributor.
SOURCE: open rear window 1997 jeep grand cherokee lorado 4wd
There is a button above the license plate you have to push up on it make sure the door locks are unlocked.
SOURCE: 95 jeep grand cherokee 4wd heater problem
it cud be a vaume hous or the flap door is not working or the watre valve is not functioning
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