1. Identify Your Transfer Case:
* Look for a lever: If you see a lever between the seats or near the gear shift, you have a manual transfer case.
* Look for a dial or buttons: If you see a dial or buttons near the gear shift that select 4WD (often marked 2HI, 4HI, 4LO), you have an automatic transfer case (though even then there might be an additional lever for the front axle disconnect).
2. Engaging 4WD (Manual Transfer Case):
* Stop the vehicle completely on a level surface. Never engage or disengage 4WD while the vehicle is moving.
* Shift the transmission into neutral (N).
* Engage the transfer case lever: Move the lever to the desired 4WD setting:
* 4HI (4 High): Use for driving on slippery surfaces like snow, ice, or mud. This gives you power to all four wheels at the same speed as the rear wheels.
* 4LO (4 Low): Use for extreme off-roading, steep inclines, or when extra torque is needed. This gives you power to all four wheels at a reduced speed. It's a much lower gear ratio for extra pulling power.
* Shift the transmission into gear (Drive or Reverse).
3. Engaging 4WD (Automatic Transfer Case):
* Stop the vehicle completely on a level surface.
* Shift the transmission into neutral (N).
* Select the desired 4WD setting: Use the dial or buttons to choose 4HI or 4LO. The exact labeling may vary slightly.
* Shift the transmission into gear (Drive or Reverse).
Important Considerations:
* Front Axle Disconnect: Some 1994 Wranglers (particularly those with manual transfer cases) might have a manually engaged front axle disconnect. This is a separate lever or knob, often under the dash or near the transfer case lever. You'll need to engage this *before* you select 4WD. Consult your owner's manual.
* Driving in 4WD on dry pavement: Avoid driving in 4WD High (4HI) on dry pavement for extended periods. It can cause binding and damage your drivetrain. 4LO should never be used on paved roads.
* Owner's Manual: The most accurate and detailed instructions are in your Jeep's owner's manual. It will specify the exact procedure for your specific model and transfer case.
If you are unsure about any part of this process, consult a qualified mechanic. Incorrectly engaging 4WD can damage your vehicle.