Command-Trac (Part-time 4WD): This system is only for use on low-traction surfaces like snow, mud, or ice. Do not use it on dry pavement. Using it on dry pavement can damage the drivetrain.
1. Bring the vehicle to a complete stop. This is crucial.
2. Shift the transfer case lever. This lever is usually located on the floor, near the gear shift. It will have positions like "2H" (2-wheel high), "4H" (4-wheel high), and "4L" (4-wheel low).
3. To engage 4H (4-wheel high): Shift the lever to the "4H" position.
4. To engage 4L (4-wheel low): Shift the lever to the "4L" position. This provides greater torque at lower speeds, ideal for difficult off-road situations.
Select-Trac (Full-time 4WD): This system was less common in 1993 Wranglers. It allows for 4WD use on both on and off-road surfaces.
1. Shift the transfer case lever. Similar to Command-Trac, it will have positions like "2H," "4H," and "Neutral." The Select-Trac system often doesn't have a dedicated 4L. Some variations may offer a low range gear through a separate low-range lever or electric actuator. Consult your owner's manual to be sure.
Important Considerations for Both Systems:
* Owner's Manual: Always consult your owner's manual for specific instructions and warnings. The location and operation of the transfer case lever might vary slightly depending on the trim level and options.
* Vehicle Speed: Never attempt to shift into 4WD while the vehicle is moving. This can severely damage the drivetrain.
* Driving on Pavement: Avoid driving in 4WD on dry pavement, especially in 4H, as this can cause binding and damage to the drivetrain. This applies *especially* to Command-Trac. Select-Trac is designed for use on paved roads in its "4H" setting (if equipped)
* Tire Pressure: Ensure your tire pressures are properly inflated for the driving conditions.
If you're unsure about how to engage 4WD on your specific 1993 Jeep Wrangler, consult your owner's manual or seek assistance from a qualified mechanic.
