Question about 1993 Jeep Grand Cherokee

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93 jeep grand cherokee has error msg of 'service 4wd switch'.. need to know where switch is located and see if vacuum line is missing...

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There's a lever in the floor that switchs to 4X4 and out under the cover is the switch connected to the lever and it's got a drink or something poured in it and it's dirty. A new switch is fast and sure but cleaning carefully with soapy water then clear water then dry out with compressed air and reinstall may work too you'll save the price of the new switch and the work is about the same.

Posted on Aug 23, 2010

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Thanks for the help.. God bless'

Posted on Oct 30, 2012


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My 95 grand cherokee says service 4wd switch is this a problem

The 4wd switch is the indicator that tells the VIC (vehicle information center) if you are in 4 low or 4 high. Have it replaced, but first check wiring, that more likely the wiring from the switch to the VIC is damaged.

you could have a vacuum leak which would enable the transfer case to not recognize that the switch has been activated.

Keep us updated.

Feb 09, 2011 | 1995 Jeep Grand Cherokee

1 Answer

Where is the 4wd switch on a 95 jeep grand cherokee

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!

Sep 16, 2010 | 1995 Jeep Grand Cherokee

1 Answer

Computer says to check 4WD Switch on 93 Jeep Grand Cherokee.

I just fixed the same problem with my own GC Limited - and it WAS a dealer part (in my case). In order to get the correct switch you need to determine what type of transfer case you have. You can do this by crawling under the vehicle near the middle and look for a small round metal tag mounted on the back side of the transfer case. Once you have that number (new process type 231, 242, 249...) you can order the correct part.

If your local jeep dealer is of a friendly sort you may even be able to avoid all the crawling around and just tell the parts manager your VIN# and he will be able to tell you what type transfer case you have - provided that it is the factory installed original.

According to the mechanic who works on my 93 Jeep it's one of three things:
1) Corrosion on the connector to the switch (which is located on top of the transfer case).
2) A bad switch. Part cost about $22.00, or
3) A bad console display. he says they have had a fair number of console display units fail. That one runs about $240.
My Jeep display it only once in a while. I have checked the connections and they are fine so the switch replacement is next. If that doesn't fix it I will opt to ignore the error.

Hope this helped (remember comment and rated this).

Apr 21, 2010 | 1993 Jeep Grand Cherokee

1 Answer

Getting a 4 DD Switch Reading on my 1998 Jeep Cherokee. What is it trying to tell me.

Do you mean "4WD" not "4 DD"?
If so, then SEE info on "Service 4WD Switch" error posted here:

Good Luck!

Feb 04, 2010 | 1998 Jeep Grand Cherokee

1 Answer

My 93 jeep grand cherokee service 4wd switch is on. what does this mean ?

Hey there, The driver info center in the 93 grand cherokee's is notorious for this message. This switch is on the transfer case and its only purpose is to tell that display what 4 wheel drive mode you are in (eg. 2 wheel, 4 wheel high, 4 wheel low, etc.) This can mean the switch bad but is USUALLY cause by a short in the display module itself. This will not affect anything on your Jeep. It is merely for driver information only. This is a very common problem and if you have a 93 in which the display is working at all your are lucky. They are very bad about going completely out over time.

Jan 03, 2010 | 1993 Jeep Grand Cherokee

1 Answer

1990 grand wagoner fog lights have no power. looking for wiring manual how does the 4wd switch activate the drivel axle? (have some rubber lines that are cut and go to where? cruise control vacuum lines...

yes if the vacuum lines are cut missing and dry-rotted they need to be in place and you should obtain a schematic or compare it to one of the same style as a guide to what goes where

Sep 06, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Miss Firing

You might have a small leak in your vacuum system, check all of the hoses and plugged vacuum connections. Check your plugs and wires, distributor cap and rotor. Sometimes a crack in the distributor cap will cause carbon to build up. Since carbon is an electrical conductor it might be jumping from one cylinder to another that is not in line with the firing order.

Jul 10, 2009 | 1998 Jeep Grand Cherokee

1 Answer

4wd service

You can try a software called digilitemoto and the right cable...It needs a computerised car diagnostic test.

Jun 15, 2009 | 2005 Jeep Grand Cherokee

1 Answer

Service 4wd switch

I have the same problem the switch is on the transfer case! what your talking about is your vehicale information center. the stupid thing sucks I also replaced it but it only comes on some times now. dont know!

Sep 10, 2008 | 1993 Jeep Grand Cherokee

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