Great video! I had heard about this mod, so happy that I found your video showing how to do it. Can't wait to do it on my lifted '03 SG Forester.

I did this on my 06 outback, had to make some modifications but the test matched up to yours. Great video.

I appreciate this video so much! Have been waiting for a nice easy walk through step by step video for a while now as i wasnt to sure going of paper alone. Cheers!!

Carling makes that switch with a 12v powered illumination. Thanks for making this video. I'm almost at the end, and I hope you explain the technical aspect of this for those of us who can understand it. I'll check your channel out to see more. Great video.

This is great! I am going to do this mod on my Subaru soon.

I love your forester, it looks so nice!!! And this is a really cool feature you’ve set up for your car 😁

Thanks for the video! worked great on my xt.

I'm definitely doing this for my trip to the Arctic Circle.

What an awesome video. Thank you for this insight

thank you for this insight,is work good on my Forester 2008 no turbo 👌

Nice job, Charlie

Hey man. Just stumbled across this. Good to see you got it working nicely. Will have to link this vid when the next person comes to the forums asking about the centre diff lock👍

I would probably use crimp spade terminals for the wires going to the switch. This lets you rewire if you get the connections wrong, makes the connections easier, and makes it easier to replace the switch.

Take off the orange button cover from the base and put in same size 12v halogen or led bulb. 3-5 mm size bulb fits there.

17:30 bro that exhaust sounds so good lol

It was a pretty decent explanation of this mod, however you misspoke a bit in your initial description of the AWD system. Some older Subarus had a viscous coupling in the rear differential and all non-STi AWD manual transmission models have one in the center differential, but none of the automatic transmission models have a viscous center differential. The automatic transmissions use a multi-plate clutch pack to shift power front to back. The standard models have something like a 90/10 front to rear nominal torque split, with up to 50 percent of the power being sent to the back if the wheel speed sensors detect slipping at the front wheels. The automatics with the VTD system have a more performance oriented 45/55 front to rear nominal torque split and are capable of shifting more power back and forth as you accelerate and brake, as well as when the wheel speed sensors detect slipping. Basically this mod has you activating the clutch pack from the more common 90/10 system so that it sends as much power to the back as it can by locking that clutch pack together to give you a 50/50 torque split. While it has the same net effect, it is not the same as a true locking center differential as it relies on the friction of the clutch pack rather than actually mechanically locking the front and rear output shafts together. As such, the performance of this "locker" is entirely dependent on the health of that clutch pack and how well you maintain your automatic transmission. That said, it can be a useful mod in situations where you know you are going to have wheel spin since you can "lock" the center without having to wait for the front wheels to slip. Some people have done similar things in the past to completely disengage that clutch pack to make their Subarus FWD in an attempt to get better fuel efficiency. I personally saw this on an SVX once that I was considering buying, but changed my mind when the switch broke during the test drive.

Had this on a legacy sedan, we had crazy problem, had to go to two mechanics to figure out two shops ago put different sized tires on the back. Actually improved my mpg to leave the car in FWD, would just put my car in neutral, flip to AWD and i could climb the mountain that was my sister's washed out vertical churt driveway

Very innovative

Interesting video

I think I would take mine and have an ARB air locker installed in my 2002 outback all-wheel-drive this way I have full control when their rear-ends locked-in or unlocked it won't damage anything electrical or on the transfer case or possibly other important things

Oh! that purrs like a kitten!

Wondering if you could blow a fuse if you try using the lighter while the diff lock is engaged. Also a plug in spotlight could trip it. Cell phone charger probably not. Great mod! Can't wait to try it.

Subaru Forester 2009? will it work?

Go to a junkyard, and nab one of those factory fog light buttons and do the same

Great video! I have a 2014 Forester 2.5i Premium, will this work on my car? And if so, also change pin #4? Thank you.

That's alot of Tapes!

Hey! Could you tell me pls, what is the type of your AT, is it a one with VTD where the main torq comes to the rear wheels (TV)? Or a one where the main torq comes to the front wheels (TZ)? Mine is the last one, TZ1. Front wheels rotarte always, up to 100% of the torq is carried to the front. I was wondering if I can do the same with my Subaru as well...

Is this wire going to the Transfer Duty solenoid? I was looking for the Electrical Specification for TCM of my 2001 Subaru Outback H6 3.0 L.L.Bean, it has 4eat but doesn't have VDC. Is it still possible to do the same with it?

Does the diff lock work in while in Reverse gear? Or is that not advised??

A great tutorial is this would be the same as turning off the Vehicle Dynamic Contol? thanks

That wiring diagram is for a non illuminated switch. One would need an additional one or two additional contacts for the light ( one contact is automatically grounded through the existing contact that would be noted as ground). Any idea if there is power available on one of your contacts when switched on or if there is a contact that grounds when turned on. Either way you could wire an LED indicator and mount it to the blank panel next to the switch or perhaps hide it somewhere up in or on the instrument cluster. This reminds me of the mod I did to enable cruise control on my car. Two contacts are used to the steering column and running through several resistors. The resistors tell the ECU wether to engage or disengage cruise while the other two resistors control increase or decrease speed. One also needs to add the factory switch that enables either cruise control or speed minder as long as the factory harness has the contact assembly clipped behind the switch panel.

Thank you well made presentaion!1 Is the something similar or the CVT transmissions, OR those do NOT need this mod?

Will you make a video of you using this up hills to see how much of a difference of torque?

Hello, Looking at your hood you subaru is a turbo but you used the non turbo resistor. Also I can't find a 4 Ohm, 15 Watt resistor on amazon.

Hi do you know if it can be done on a 4 gen? the one after the one you use.

Will this affect the normal operation when it’s turned off? Will it never lock the diffs when off and only lock if on?

I just found your video!! So awesome!! Do you happen to know if I can do this to my 97 with a 4EAT?

Looking greeat!! I have a impreza b3 2L but manual dearbox , you know if can i do something like this ?

Do you have to turn the steering wheel all the way when turning it on to bind?

Will this work 9n the outback 2008 2005 with the 3.0 engine and at gearbox?

The way u explain things makes any idiot guy like me think I can do it 😂 awesome video!!

Thanks for sharing! Where can I find the 4ohm 15kW load resistor? Could not find it in Aliexpress or EBay..

Can this modification be made to a 2008 outback 2.5xt?

Great video imma do this on my 06 Outback tommrow does anybody know if it will go smoothly with my model

Well that locks the front to the back but does nada left to right. Subaru does that by using the abs system to apply the brakes of the wheel that is spinning to send power through the open diff to the other side. Subaru locks front to back when the fronts slip anyway so I guess your switch gets it a little earlier....

Question I noticed in my 05 foz XS auto that there’s a wire taped to the wire for my cruise/defogger buttons, is that a pre wire for something? Like if I put another button there?

I have a 2016 base Subaru forester standard. Would this work in this model? I know you talked about the 4 speed auto, but I'm still good old clutch and shift.

Can I do this to my 2017 crosstrek? Or do I have to buy lockers?

I have a 2012 subaru forester with a TCM, which says DT on it, which 2 wires are you cut into? Please see picture

Will this mod work on a 2003 JDM legacy wagon 2.0 turbo

On a non turbo 02 Impreza why would I install a 100 ohm resistor? Seems to me like I would just leave it open.

How does this compare to the snow/mud setting in newer Subaru's?

I wonder if this will work on a 2012 forester?

works on 2006 Subaru Outback non turbo automatic transmission

Its still an all time 4wd but with locked dif like tractors have. The whole point of having a subaru is to make the dif act like a tractor or like a Suzuki Jimny where you can have RWD or 4WD with a push of a button. Informative video though, well done

Do you have a wiring diagram for the mod for a non turbo engine. Thanks

Will this work on a 1999 Subaru Legacy L 30th Anniversary Edition Auto??

Will you please help us see if this will work for other cars, 2015 impreza here!

would this work on a 2015 subaru outback? and other than cost why do this as opposed to a actual rear diff locker?

My 2008 outback with 4eat has a different wiring configuration and no white and green wire do you know the correct wire to tap into.

Hi...it s the same for outback 2010 ?please can u help

Would this work on a 2016 Forester?

Hi, I have an xv 2019, the 4×4, the computer gives it power to whichever wheel it wants, and I had several situations where the computer decided not to let it give power to the rear wheels, and it only worked forward, and the car would sink in the sand in front, and the rear wheels did not work.I saw that a button can be made Give a physical command to the computer or to the chalk to let the mocks back work, have you done something like this, can it help me

Can i put on rx300 Awd?

Can this be done to a cvt equipped subaru?

Hi will this work on 2004 fxt????

can this be done in a 2021 outback CVT

I cant get it to work on my 2000 subaru outback. I wired it up just like in your video but it still doesnt work. could you help me?

What about a 03 forester with a 5speed

My 02 Forester S with 4EAT would lock front and rear if you manually selected 1st or 2nd gear without any mods. You really don't need a 50/50 split once you're at 3rd/4th gear speeds. Not sure how this works with a CVT.

can this cause any undue strain on other components?

Hello. i followed your instructions and i have this mod for a year now and it works flawlessly. The only thing that i wish is to be able to install a ligth on my dash when i have the switch to ON. I wonder if there is any way to do this on the existing setup

This sounds great, can i do this on my -08 na outback with manual gearbox..?

Posi Taps! Would make this a lot easier and cleaner! Great job!

Cool modification, if you lock the TCU into staying in that 50-50 mode won’t that cause premature wear on the center diff? I’ve noticed that Subaru has been listening to people like you. Newer cars that feature X-mode essential have something like this and more baked in. Also nice to see a Forester XT, I wish Subaru still made an XT version or at the very least put turbo in the Wilderness edition.

Will this work on. 1999 forester 4eat?

Can this mod be doable to the 2022 or 2023 Ascent? Thanks

will this work with any subaru

Video says 4ohm 15watt resistor but the link takes me to 3ohm 15 watt resistor. Very nicely done, will you be posting a video of your Subaru offroading with this mod active?

Is send prosece for 2009 subaru forester

Has anyone done this on a SGXT as I want to do it but cannot find that resistor in Australia only the USA. How important would it be to get the correct one? Any auto electricians here?

Does it work with manual transmissions.

Hii Thank you for the awesome Video. So can you tell me if this work on a 2005 2.5xt Manual? greetings

Can you do this with a manual transmission?

Hello, Could you tell me I own Subaru Baja 2003 Turbo AT with Sport Shift, it is kicking when shifting from 2nd to 3rd gear, master told me to replace Transmission Computer which I can't find, mine is 31711-AJ000 , Could you give me any advice which replacement TCU might work with my Baja, transmission code is : tv1b4mhfaa , and rear diff is 4.444 VISCOUS LSD. Thank you in advance

So can this setup be done on a 2006 Subaru Outback Sport

Interesting video! Do you think this would be possible on a 2014 outback 2.0D manual transmission? Best regards // Mikael

Please someone tell me why there is a resistor to ground? This i dont understand.

I have a standard 6 speed though.

I thought the "Hold" button on my '06 SG9 2.5 XT does that?

I’m wondering how long that computer module will last with a physical switch flipping current off and on.

Your FXT doesn't have a center differential. It runs a transfer clutch. For Foresters, only the 07/08 FXT Sports 4eat runs a center diff; VTD diff. I have a spare VTD conversion if you wanna buy. It's much better in driving performance and lockup with that switch mod. Video Demo on my KZfaq page.

From the looks of it, this would work with a 2016 manual Forester right?

I'm assuming this doesn't work for 2021 Forester with a CVT transmission

I hope this works on a 2012!

Does anyone know how to do this for the 5 speed?

Hey my men great job!!! Do you think that it would work with a 2022 CVT?? From my POV i really do think that it would as long as you keep your CVT on artificial paddle shifting in first or second gear. Please let me know what you think?? Thank's in advance for your answer.

Hello fella, I'm a UK 🇬🇧 guy and we get the 6 speed manual diesel. Is this only for automatic transmission models. Please advise???

I wonder how all this works with a manual? TCU is with automatics only right?

Has anyone tried this on a gen 4 ra WRX with the FA20? The thing I like least about this car is that unless you have snow tires it is garbage in any kind of snow. I want to be able to lock the diffs when stuck and raise the suspension a few inches, then it will actually be a good mountain car