Locking diff?

I've got a 2010 TRD offroad Tacoma, and it's been messed with... Alot. It doesn't have the diff lock button on the dash, it's missing altogether, but I see the wiring for it, and there is power in the plug. How can I tell if the truck has a locking diff or not? It also has an A-trac button, but looks like they just used the button as a filler since it's not plugged in and I don't see a plug for it anywhere. Is A-Trac a common option

 

I have a terrible suspicion that the truck you have is not a trd. What makes you think it is? Just the stickers? The easiest way to find out is to plug in your vin on Toyota.

https://www.toyota.com/owners/my-vehicle/vehicle-specification

 

Show what you got.

 

Crawl under the center truck.
Look back at the rear axle.
So you see something like this?

 

Nope, nothing like that attached to the diff. I guess that's my answer.

 

Does it have the 110v bed outlet? Does it have a hood scoop, color matched door handles, mirrors, and rear bumper?

 

No outlet in the bed, or hood scoop. It's interesting because it does have a color matched rear bumper, door handles and mirrors. Also has the TRD exhaust tip and gauge package.

 

So, it’s either a TRD sport that somebody removed some stuff, or a SR5 that somebody added TRD sport stuff to. I seriously doubt that it’s a TRD off road. Go to the link posted above and enter your VIN.

Also, look at the seats. These are the sport seats that came in the TRD sport and TRD off road. Notice the bulges that stick up on each side of the headrest. Only the sport seats have those bulges

 

Yeah it is an SR5 Sport wanna be. Sport didn't come with locker though.

 

I’m going with SR5 with Off-Road Decals.

Did the 10’ come with Auto-LSD?
If so, at least it isn’t too bad. Better than an open Diff.