On a 2005 4runner 2wd, is the AUTO LSD switch a e-locker?. The guy at the Toyota dealer said it was an auto limited slip differential. A switch~able limited slip sounded goofy, but I didn't want to argue with the guy.
AUTO LSD switch (1 Viewer)
- Thread starter beaufort-fj60
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
I don't know about a 2005 4runner but....
True locker = mechanical engagement of both wheels LOCKED together to turn together.
Limited slip is NOT a true locker, but it is better than an open diff.
Limited slip limits the amount of wheel spin before transferring power to the other wheel, IIRC usually by a type of clutch pack.
Maybe someone else will chime in.....
True locker = mechanical engagement of both wheels LOCKED together to turn together.
Limited slip is NOT a true locker, but it is better than an open diff.
Limited slip limits the amount of wheel spin before transferring power to the other wheel, IIRC usually by a type of clutch pack.
Maybe someone else will chime in.....
- Thread starter
- #3
I thought limited slip diffs were "on" all the time. I had never heard of a limited slip that was selectable.
I thought they were "on" all the time too....but you know those crazy Japanese engineers, if there is a will there is a way (to make it turn on & off) 
HOWEVER i am no expert just having fun & putting in my .02.
HOWEVER i am no expert just having fun & putting in my .02.
on my 08 tundra when you select the auto LSD you are shutting off the LSD and a light comes on the dash that says auto LSD off. Probably similar
Y'all got to be talking about the traction control. There is NO way to switch off a LSD. And, there is a slew of miss-leading names and terms out there. It's a new trend with auto manufacturers...don't ask me why. oh yeah! it's called "sales"
Also, if its a 2WD or base model, I doubt Toyota wanted to spend the coin and put a LSD in it. It's far cheaper to add the traction control.
It works off wheel speed sensors and applies the brakes to which ever wheel is spinning....krappy way to do it, and can get you in trouble, but far FAR better than the alternative...an open diff...
Same system that's used for skid control and all the other stuff they cram in it cause people don't know how to drive.
Also, if its a 2WD or base model, I doubt Toyota wanted to spend the coin and put a LSD in it. It's far cheaper to add the traction control.
It works off wheel speed sensors and applies the brakes to which ever wheel is spinning....krappy way to do it, and can get you in trouble, but far FAR better than the alternative...an open diff...
Same system that's used for skid control and all the other stuff they cram in it cause people don't know how to drive.
Last edited:
ToyotaDon
I am here
If you had any trouble understanding Hilux, here's another explanation.
The "Auto LSD" is an electronic substitute for a mechanical LSD system. It works similarly to ATRAC except it uses only the brakes on the rear axle. When wheelspin is detected, the brakes are applied at that wheel, slowing it down and allowing the tire with more traction to receive power.
Remember the old-school trick of applying the e-brake on an open differential when one tire is spinning? Auto LSD is just a more sophisticated version of that.
The "Auto LSD" is an electronic substitute for a mechanical LSD system. It works similarly to ATRAC except it uses only the brakes on the rear axle. When wheelspin is detected, the brakes are applied at that wheel, slowing it down and allowing the tire with more traction to receive power.
Remember the old-school trick of applying the e-brake on an open differential when one tire is spinning? Auto LSD is just a more sophisticated version of that.