Did I damage my 4 wheel drive system ?

Well just back from a long weekend camping trip and looks like I forgot to take the 4x4 low off when I left the campsite...Had to deal with lots of gravel hills at the campsite so the 4x4 low came in very handy.

So it seems like I pulled my travel trailer home in 4x4 low on the hwy for a 3 hour drive. Had the trailer tow button on as usual but there was no funny gearing noises or even any noticeable difference in the drive home.
Usually when in 4x4 low its noticeable especially on turning corners.

Wondering if its possible that the 4x4 low disengages by default at higher speeds. any thought ?

....4x4 LOW the whole way.... wow.

Hard to say what could have happened. I would get the gearbox fluids changed to check for any damage. Im surprised your transmission didnt overheat hauling and highway speeds

Your fuel milage must have been AMAZING

Don't mind the RPMs screaming and bouncing off the limiter either...

Ouch. That cannot be good.

Holy Hell Dude!!! How you could you not tell it was in 4 Low? What's the speed limit there, 35 kmh? If it was running smooth at highway speeds and you couldn't tell that it was in 4 Low, I would say something is definitely broke now......


Good luck. If it's still under warranty, I would most definitely suggest NOT telling the service guy what really happened......

I don't think you were in 4Low. You would be screaming trying to get anywhere near highway speeds. It would have been extremely obvious. I just can't picture it happening.

And no, 4 Low doesn't and can't disengage automatically. You have to be at a stop for that since it has to switch gears in the T-case. Four High you can do that, but not Low.

From the owners manual:

In 4L (4X4 low), the electronic locking
differential will automatically
disengage at speeds above 62 mph
(100 km/h) and will automatically
reengage at speeds below 56 mph (90
km/h)