Fordman1981
Platinum Member
No, not the same thing. 4 wheel drive is actually kind of a myth. Remember the movie My Cousin Vinny? Remember how the car only spun one rear wheel? In most vehicle only one wheel spins on each axle. This is the "normal" setup. A vehicle with a limited slip differential or as some call it, posi-traction, can lock up both wheels to a point but use clutch packs that will release and engage depending on the situation. A e-locker actually mechanically locks the axle solid. Both wheels have to spin at the same rate. Because of this you get maximum traction but only works well in a straight line. There is an independent switch that engages a locker seperate and is an independent system from the 4x4 switch and system. In the case of my Nissan Titan the switch is on the dash. In the case of my F150 it's actually part of the 4x4 switch. You rotate the switch to do normal 4x4 operation and pull it out to engage the e-locker. I believe at this time Ford, Nissan, and Toyota are the only ones offering it. Nissan has had it on the trucks for about 10 years, Toyota followed, then Ford around 2008. Chris
True 4 wd is not a myth I have it on my power wagon. So you need to add ram to your list and they've had it since 2005.