Forum Discussion

Tour1's avatar
Tour1
Explorer
Jul 27, 2015

Hacked jeep vs a tag axle hitch

Recently some computer hackers showed that they could invade a jeep's computer and remotely operate things, in particular the brakes. The short wheelbase jeep has an anti sway control that operates the left or right side brakes unequally to make it go straighter if it starts to do bad things. The hacker made it do a bad thing and of course if there was a mechanical or electrical problem.
The builder rates my Liberty at 2000 lbs towing without the anti sway or 5000 lbs with it factory installed. There is no dealer or home installed version.

So I am wondering if any of you have ever seen, heard of, or even thought about bolting a tag axle on to a short wheelbase tow vehicle to stabilize it and/or increase the rated tow?
The turning radius would change, I think, maybe front wheel alignment wouldneed adjustment on installation. Also since braking ability depends on tire loading, the axle would need coordinated brakes on it.

The load budget would go up by 3000 lbs so if the thing weighed 1000 it would still add a ton of tow, and it seems like the amenities increase dramaticly as trailers go over the 2000 lb mark. It would be best to have an easily dettached setup like maybe 3 or 4 reciever hitches but it would have to be proven workable first.
  • Never heard of it. On something like a Jeep Liberty, you'd need to essentially rebuild the entire rear half of the vehicle.

    The hack in question only applies to newer vehicles, and there is already a software update that can be applied by the dealer to resolve the issue. This won't fix the underlying problem of critical vehicle systems being connected to a cellular communication package (a profoundly stupid idea on the part of automakers, IMO), but welcome to the future I guess.

    It's going to take a few high profile incidents before manufacturers really address this problem, unfortunately. After all, the security researchers in question did this public demonstration for a journalist precisely because Chrysler wasn't listening to them when they said the system was insecure.
  • Not sure which Liberty you're talking about, but mine, without factory tow, can still tow 5000. Of course, weight isn't my issue, as much as aerodynamics. Still managing 15+ MPG at 60mph.