Question about 2003 Ford Expedition

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I can't get the 4-wheel drive high to activate and when I put the vehicle in neutral and move switch to 4 low there is a clunk in the rear, the dash indicator for 4wd low comes on but there is no 4wd

I checked all fuses to the transmission, shifting, 4wd and none were blown but I installed new fuses anyway. Fuses 11 14 etc.

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  • 49 Answers

Ask your local shop tech if he has ran into this, thinking its an electronic switch, they will give you an idea of what it is and an estimate if they are an honest shop, they will have access to a database with detailed techinical information on how to test the electronic hubs or the electronic switch in the transmission, are you sure you checked all the fuses!!! and theres not one hiding in the wiring harness or under the hood?
if you find that fwd switch you can remove it and test it with a battery, should be a fairly cheap fix, worst case, tranaxle rebuild at a shop 2,0000 and a warraty for another 100,000 miles, sucks but at least it will be reliable again, if you want to go cheap try used parts search on www.car-part.com

Posted on Nov 26, 2014

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Posted on Jan 02, 2017

3dmaster
  • 183 Answers

SOURCE: 1998 Ford explorer transmission 4.0 L OHV Engine

Yes 1 more thing is here for you that can be don by you for activating you car on road,

1.check you battery have a suficiant voltages,
2.check your spark ignition kit,

THNX

Posted on May 17, 2008

  • 1 Answer

SOURCE: My 2004 F-150 Ford Truck will not engage into 4 wheel drive low.

I am going to ask a dumb question....do you have it in neutral and the brake mashed when you switch to 4WD LOW? I believe that is what my book says to do.

Posted on Oct 27, 2008

  • 1 Answer

SOURCE: 2002 ford explorer-no 4 wheel drive

wheel bearing

Posted on Jan 11, 2009

geraldo14200
  • 48 Answers

SOURCE: 2001 f250 4x4 stuck in low range

I have an 02 F250 4X4 Super Duty and I belong to a great Ford Message board, these guys are great, give them a try, here's the link which you will have to create a free account. http://www.ford-trucks.com/ Let me know what you find out okay? if you create an account, go to the forums list, scroll down to the Super Duty section and post your situation or questions there.

Posted on Apr 06, 2009

wyatt1582
  • 453 Answers

SOURCE: 4 wd will not engage ,indicator lights on dash do not light

If its not engaging into 4 WD the vaccum actulator is more than likely stuck. The actulator is located on the front of the axle next to the the front gear hub it will have a plastic cover over it. Unbolt the two 10mm bolts that hold the cover on and spray down with WD-40, also pull back the rubber cover thats on the actulator staff and spray it. You might have to hit the staff a few times to get it to move just make sure its in 4WD. I had the same problem, that part is exposed to alot of water, snow, salt and so on. Or you could just replace it but its cheaper to spray it down with WD-40

Posted on Apr 18, 2009

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2 Answers

How do i disengae from four wheel drive


At best as I know the 2005 Prado is all time 4WD vehicle.
Is the engine running ? Can you shift the gears ?
May be something is broken in the drive train...
As a suggestion you can go home by locking the centre differential, proceeding at low speed and checking for noises .
Pls. let me know if it helps...

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4X4 ok on drive position but disengage in rear


Regarding 4 Wheel Drive problems,
Always follow Owners Manual for when and how to utilize 4 Wheel Drive. In most cases it should not be activated when vehicle is moving. Automatic Transmissions with 4 Wheel Drive have a Transfer Case similar to that used with Manual Transmissions. Shifting between LOW 4WD and HIGH 4WD should be selected while the vehicle is stopped. Again, follow Owners Manual Instructions. If you hear strange Grinding Noises have a Certified Technician check out your vehicle immediately.

Sorry that you are having troubles but, it sounds like the problem is more than a simple fix to me. If your Vehicle has Manual Locking Hubs make sure they are in the correct position for use in 4WD.

Dec 20, 2011 | Dodge Ram Cars & Trucks

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I have a 2004 chevy tahoe and can't figure out how to put it in 4x4 during this bad weather!


Depending on if you have a push button, switch activated, or manual shift type 4x4 system they are generally the same. Transfer in 4x4 high can generally be made at any time that you're not traveling at highway speeds or faster by simply moving/pressing the selector switch/lever/button to the position indicated as 4x4 high. If you are wanting to use 4x4 low this transfer has to be made while the vehicle is stationary, wheels straight, vehicle in neutral and brake depressed. Note that the use of 4x4 low is only recommended for the most extreme driving conditions and should only be operated at low speeds.

Jan 26, 2011 | 2004 Chevrolet Tahoe

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My 2008 Kia Sorento is stuck in four wheel drive. How do I fix it? Thanks, Bill


I assume that the vehicle has a rotating knob on the left side of the dash for four wheel drive. It may have been put into 4 low by mistake. To get it out, start the vehicle and put it in drive, select 4 low on the 4 wheel drive selector, take your foot off the brake and get the vehicle rolling at a walking pace (1-2 m.p.h.) then move the selector to 4 high, stop the vehicle and move selector to 2 high.

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1 Answer

My kia soernto 4x4 light flishing


I assume that the vehicle has a rotating knob on the left side of the dash for four wheel drive. It may have been put into 4 low by mistake. To get it out, start the vehicle and put it in drive, select 4 low on the 4 wheel drive selector, take your foot off the brake and get the vehicle rolling at a walking pace (1-2 m.p.h.) then move the selector to 4 high, stop the vehicle and move selector to 2 high

Dec 12, 2010 | 2007 Kia Sorento 4x4

2 Answers

4wd does not work


Electronic Shift On the Fly (ESOF) Operation
The ESOF system is an electronic shift 4x4 system that allows the operator to choose between two different 4x4 modes as well as 2-wheel drive. The operator can switch between 2WD and 4WD HIGH mode at speed. To engage or disengage LOW Range, the vehicle speed must be less than 5 kph, the brake depressed, and the transmission must be in NEUTRAL.

The transfer case is equipped with an electromagnetic clutch which is located inside the case. This clutch is used to spin up the front drive-line when shifting from 2WD to 4x4 High mode at speed. When the control switch on the instrument panel is turned, the generic electronic module (GEM) recognizes that a shift has been requested and activates the electromagnetic clutch and the relays which power the transfer case shift motor. When the shift motor reaches the desired position as determined by the contact plate position inputs to the GEM, power to the shift relays and motors will be removed. When the transfer case front and rear output shafts are synchronized, the spring loaded lockup collar mechanically engages the main-shaft hub to the drive sprocket. Finally, the front axle collar is engaged and the electromagnetic clutch is deactivated.

Shift Between 2WD and 4x4 HIGH:
Shifts between 2WD and 4x4 HIGH can be made at speed. Listed below are the inputs and outputs needed by the GEM to execute a change between any of these modes.

Feature Inputs:
*4WD Mode Switch (Various resistances).
*Contact Plate Position Inputs A, B, C, D (grounded when closed, open circuit when open).

Feature Outputs:
*4x4 Shift Motor Relay Outputs
*Transfer Case Clutch Relay (grounded when relay is on, open circuit when relay is off).
*4x2/4x4 Vacuum Solenoid (grounded when activated, open circuit when deactivated).
*Cluster Indicators (ground when activated, open circuit when deactivated).

Shifting Into/Out of 4WD LOW:
When shifting into or out of 4WD LOW, the GEM requires that the vehicle speed be less than 5 kph, the brake is applied, and the transmission is in NEUTRAL.

Feature Inputs:
*4WD Mode Switch (Various resistances).
*Contact Plate Position Inputs A, B, C, D (grounded when closed, open circuit when open).
*VSS Sensor (Sinusoid Signal: 0.7V-20V, 2.2 Hz/mph).
Brake Input (battery voltage when brake is depress, open circuit when not activated).
*Transmission Range Sensor (grounded when transmission is in NEUTRAL, open circuit otherwise).
8Start/Clutch Depressed Input

Feature Outputs:
*4x4 Shift Motor Relay Outputs
*4x2/4x4 Vacuum Solenoid (grounded when activated, open circuit when deactivated).
*Cluster Indicators (grounded when activated, open circuit when deactivated).

4WD Mode Switch
A rotary switch allows the vehicle operator to choose between 2WD, 4WD HIGH, and 4WD LOW modes of 4x4 operation.

GEM Module
The Generic Electronic Module (GEM) controls the operation of the 4x4 system

Vehicle Speed Sensor
The vehicle speed sensor (VSS), mounted in the rear of the transfer case, informs the GEM of the vehicle speed.

Transfer Case Shift Motor Sense Plates

The shift motor sense plate, an integral part of the electric shift motor, informs the GEM to the positions of the transfer case

Transmission Range Sensor
Located on the left side of the transmission, this sensor informs the GEM when the transmission is in the NEUTRAL position.

Electric Shift Motor
The electric shift motor, mounted externally at the rear of the transfer case, drives a rotary cam which moves the mode fork and range fork within the transfer case to select between the 2WD, 4WD HIGH, and 4WD LOW positions.

4x4/4x2 Vacuum Solenoids
These two solenoids are attached to the upper RH side of the engine compartment dash, and alternately route vacuum to the vacuum motor which engages/disengages the center axle disconnect collar in the front axle assembly.

4x4 Shift Motor Relay
A module containing two relays which under the control of the GEM, shift the transfer case shift motor between the 2WD, 4WD HIGH, and 4WD LOW modes.

Transfer Case Clutch Relay
An electromechanical relay is used to activate the transfer case clutch within the transfer case.

Good luck and hope this helps,but start with the simple and check the fuses and wire harness. Both white/light blue stripe wires should have 12V in run. The GEM will ground the left side (closest to engine) solenoid to disengage the front axle. It will ground the the right side solenoid (closest to fender) to engage the front axle. If the GEM doesn't see Neutral it will not let the truck come out of 4Lo. If the GEM had water leaking on it it may well be the root of the problem. The shift motor only has power when the GEM sends it a signal to move the shift lever. Once the shift is completed the motor shuts off. There are 2 wires that control the shift motor. A yellow and an orange. The GEM alternates between 12v and Ground to these wires to control which way the motor turns. The GEM uses the transfer case shift relay module to control the power to the motor. There are contact plates inside the shift motor assembly that indicate the position that the shift lever is in. This is what the GEM used to know what the T-case is doing. Any one of these components can fail.







Jan 10, 2010 | 2002 Ford Explorer

1 Answer

4x4 problem


switch to the auto 4 wheel drive in park. reverse truck and then put it in neutral and try to switch back to 2 high

Dec 16, 2008 | 2003 GMC Sierra 1500

1 Answer

1990 Suzuki Escudo 4 wheel drive


As far as I know the procedure should go something like this...

Stop the vehicle, engage the parking brake and if applicable, get out and turn the hubs on the front wheels from Free, to Lock.(You may not have these on a Suzuki, they may be auto-lockers)

Get back in the vehicle and put the transmission shift selector into Neutral.

If you have a manual transfer case, move the selector-shaft to 4x4-High, or 4x4-Low -- whichever is desired. Now, putting the vehicle in gear with the transfer case is sometimes somewhat difficult. As long as the vehicle's transmission is in neutral, don't worry, the gears inside the transfer case are big and beefy -- Don't be afraid to be rough -- Again as long as the transmission is in neutral. You may also have to disengage the parking brake and slightly let the vehicle roll forward or back with your foot-brake to get the Transfer case to lock into place.

Once 4x4 of the selected High, Or Low range is selected, usually indicated by the vehicle jerking slightly with a slightly loud clank/thud. Move the Transmission selector out of neutral into your desired gear (Drive if Automatic, if Manual, whichever gear you pull out from). and voila! You should now be in 4-Wheel-Drive.

To disengage 4-Wheel-Drive. Just reverse the steps.

May 16, 2008 | 1990 Suzuki Sidekick

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