* Automatic Transmission: Generally, these should be towed with the drive wheels off the ground. This is usually accomplished by using a dolly (supporting the rear wheels) or a flatbed tow truck. Towing it on its wheels with an automatic transmission can damage the transmission.
* Manual Transmission: A manual transmission *might* be towable with all four wheels on the ground, but this depends on the specific transmission and the distance being towed. Check your owner's manual for the manufacturer's recommendations. It's generally safer to tow it on a dolly or flatbed to avoid potential damage.
Crucially: The fact that it's electric 4-wheel drive doesn't change the basic towing rules for the transmission type. The electric portion is only for engaging and disengaging the front axle; the transmission is still the key factor in determining towing methods.
Always consult your 1994 Ford Explorer owner's manual. This manual will have the definitive answer on how to safely tow your vehicle. Improper towing can cause significant damage to your transmission and drivetrain.
