VSC OFF switch install.

[Dirt J]

Laziness? You priced a new rack lately? And BTW it takes more than 5 minutes to replace one.

Some of us with limited budgets and time, still need these vehicles to be drivable without being dangerous to the passengers and surrounding vehicles. This mod does that. No need to ascribe the intentions of others.

 

[100d ua]

Laziness? You priced a new rack lately? And BTW it takes more than 5 minutes to replace one.

Some of us with limited budgets and time, still need these vehicles to be drivable without being dangerous to the passengers and surrounding vehicles. This mod does that. No need to ascribe the intentions of others.

Land Cruiser is the wrong car for you if you’re on a budget. What next? Delete the brake booster warning because you can’t afford to replace it?

 

[Live to Ski]

bellows air on the fire....

 

[troopy27]

I thought I would add my install to this thread as I found it helpful but it seems like there was still some murkiness on the wiring of the on-off-on switch. I used a pre-wired one from amazon and it’s working flawlessly. I can now have all the Nannie’s on, vsc off or vsc and trac off.

From what I understand vsc is stability control and has so do with reducing vehicle yaw (like in a corner) and trac is traction control and regulates forward motion tire slip. It’s nice to have these individually as sometimes you need wheel flares to clean out tread in muddy conditions or just want to have fun in a snowy parking lot.

Either way I agree both of these are crucial safety features and I plan to keep them on for a majority of my driving, but I like to have the control to turn them off.

On a side note - I was having vsc interventions on winding roads and it is due to a failing steering rack (which was pointed out here). The rack is getting replaced, but I still like the ability to turn off systems when needed. So thank you to this thread for helping me diagnose that steering rack issue from those vsc interventions!

Anyways - here is my diagram and how I wired it:

Like the OP noted A43 pin from the connector at the ecu was connected to the middle wire. Ground to one and back to the pink/black wire for the other.

One thing I didn’t realize was that the on-off-on switch works opposite how I though (see below last photo) so when you have the switch depressed to “II” it connects the middle and the opposite wire (the one under the “I”). I had that backwards but hopefully the last image is helpful for those wiring it in.

Finally - confirmed that you can turn off vsc while driving. Then turn off track and vsc while driving but needs an engine key off and the switch back to vsc on to reset the system. Confirmed also that center diff lock and all other systems working as they should.

Thanks for all the help and I hope this helps any future installers!

 

[Freeride78]

Hi everyone...it's also valid for the 100 European...in the third connector I actually have the P/B wire...but if I look at the diagram taken from the internet it's all different..

 

[Freeride78]

I thought I would add my install to this thread as I found it helpful but it seems like there was still some murkiness on the wiring of the on-off-on switch. I used a pre-wired one from amazon and it’s working flawlessly. I can now have all the Nannie’s on, vsc off or vsc and trac off.

From what I understand vsc is stability control and has so do with reducing vehicle yaw (like in a corner) and trac is traction control and regulates forward motion tire slip. It’s nice to have these individually as sometimes you need wheel flares to clean out tread in muddy conditions or just want to have fun in a snowy parking lot.

Either way I agree both of these are crucial safety features and I plan to keep them on for a majority of my driving, but I like to have the control to turn them off.

On a side note - I was having vsc interventions on winding roads and it is due to a failing steering rack (which was pointed out here). The rack is getting replaced, but I still like the ability to turn off systems when needed. So thank you to this thread for helping me diagnose that steering rack issue from those vsc interventions!

Anyways - here is my diagram and how I wired it:

Like the OP noted A43 pin from the connector at the ecu was connected to the middle wire. Ground to one and back to the pink/black wire for the other.

One thing I didn’t realize was that the on-off-on switch works opposite how I though (see below last photo) so when you have the switch depressed to “II” it connects the middle and the opposite wire (the one under the “I”). I had that backwards but hopefully the last image is helpful for those wiring it in.

Finally - confirmed that you can turn off vsc while driving. Then turn off track and vsc while driving but needs an engine key off and the switch back to vsc on to reset the system. Confirmed also that center diff lock and all other systems working as they should.

Thanks for all the help and I hope this helps any future installers!

View attachment 3856030

View attachment 3856031

View attachment 3856032

View attachment 3856033

View attachment 3856034

this is not correct....vsc to ground you do nothing but make the light turn on..

 

[offoradjunkie]

The only times VSC has actually turned on for me have been around corners and sometimes on winding freeway exits. It really wakes you up and occasionally I need to change my pants after it happens. It once happened going up to big bear on icy roads… yeah I think I need to do this mod.

 

[offoradjunkie]

Could someone make a wiring diagram including the relay they used? I have small brain.

 

[aljordan]

I just did this mod after driving thru the mountains in Tennessee and the Carolinas. Sudden left front wheel braking at speed isn't something that I'm interested in. We are moving to Columbia SC and do not have a house to do the work. No time or place. Once we get into something I'll have a new rack installed. But this helps me out in the short term while I concentrate on other things.

Thanks for putting this together! Its saved me from more potential issues.

 

[diegus011]

I've had VSC braking engage probably about 8 to 10 times over the last six months. Always at freeway speeds and when the vehicle is climbing a highway slope. Last night was the worst one and almost sent me off the road. Crossed a lane, lost 40mph and scared the crap out of the family and I. I think it is more likely at this point that I will have this problem cause an accident before an accident occurs from a lack of VSC assistance in the moose avoidance maneuver. Have decided I will have to do the mod. By the way, mi rig is a stock 2000.

Just a follow up - this was eventually diagnosed (and confirmed fixed) as a worn out rack and pinion. Basically, it was loose so the you could turn the steering wheel a fair amount without registering wheel movement. This difference is what set the VSC. The system interpreted that as skidding.

 

[primeral]

Thanks for this Odysseus. VSC had made the 100 undrivable and this works so well. I finished my 3D printed switch cover today and right now I'm testing fitment. Lettering is debossed so it'll get filled with paint for better visibility. I'll update once everything's ironed out.

 

[scrt80]

Thanks for this Odysseus. VSC had made the 100 undrivable and this works so well. I finished my 3D printed switch cover today and right now I'm testing fitment. Lettering is debossed so it'll get filled with paint for better visibility. I'll update once everything's ironed out.

View attachment 4069176View attachment 4069177

View attachment 4069178

I look forward to your next posts! Just had the part time kit installed.

 

[primeral]

I look forward to your next posts! Just had the part time kit installed.

My redesign was successful. I recessed a proprietary 3-position rotary switch to be flush-mounted, rewired it so that it is On-Off-On, and for my prototype to have legible lettering. It looks like it could have come OEM.

* Caveat * In the Off position, where Pink-Black isn't connected to anything, triggering TRAC off, I find that you have to shut the engine off and back on to reenable TRAC. I don't think this is a good feature, so I'm abandoning On-Off-On and going with an On-On switch that simply enables VSC On or Off.

As promised, I made the files available for free download (both portrait and landscape versions). I'm not an official vendor so I don't want this to be an ad, but if you are interested in a pre-printed and pre-wired rotary switch, feel free to reach out.

Again, thanks to Odyseuss for making the wiring part accessible.

 

[primeral]

Just a note on my '07 I can press the button and disable everything with the vehicle running, but I can't turn it back on unless I restart the truck.

I'm experiencing the same behavior. My wiring scheme is attached.

When Pink/Black connects to nothing, TRAC does become disabled. In order to turn VSC back on, connecting Pink/Black to Pink/Black alone doesn't reenable VSC. The engine must be turned off and back on.

Because of this, I'll design a second version with a similar rotary switch that just has On-On positions. This version will just enable and disable VSC at will without affecting TRAC.

 

[rmk018]

Hello, can you please advise on which model this setup will work
also I you can send a short video showing the switch and the light on the dashboard once the VDC TRAC is ON would be appreciated

 

[brake checker]

Has anyone done this on a 2004 LC. Can't come up with a wiring diagram, just want to make sure I snip the right umbilical cord. Going to roll with male/female terminal ends in case I want to reconnect or add a switch later. Cheers.

 

[brake checker]

This is the easy/ghetto version. Obviously all credit to Odyseuss and LostAfrican.

I haven't quite made up my mind on my switch implementation, but that's the easy part and I wanted VSC off ASAP, so my mod focused on getting VSC disabled but leaving the door open for a switch install.

You can skip down to the pictures below.

1. Locate the connector, unplug, loosen tape to let me get at the wires. Locate #3, which was pink with a black stripe and grey bands.

2. Cut the wire, crimp on connectors. I used a male on signal in (top wire going into dash) and female on signal receive (bottom wire going into connector/ECU) because I think I'm funny and so that I could reconnect the cut wire if needed.

3. Ground was grabbed from the retainer screw LA mentioned and the corresponding connector put on it and then plugged directly into the ECU wire.

4. ECU #3 is grounded, VSC is disabled.

Connectors are in place and easily swapped out for a SPDT or even switch/relay or whatever I go with just by tapping the signal wire I left loose. I may just leave it like this. As someone else put it, VSC has tried to kill me more than it's tried to save me. Whether it's tire pressure, or bushings, or sensors, or bearings... these are all points of failure that I shouldn't have to monitor constantly. I've had VSC kick in while going 60mph on a curved slope and it's scary. Scary enough I've lost faith in the system and don't want to white-knuckle turns or have the wheel yanked out of my hands.

Hopefully this helps explain this excellent and useful mod for those who found the schematics daunting (like me) and needed the 'Basic' version. It took 10 very leisurely minutes. Probably could have done it in five if I didn't feel the need to walk around and cuss the cramped working space so often.

View attachment 1717768

What gauge did you use on your grounding wire?

 

[Blake1]

Many switches will work.. look for "DPDT

My redesign was successful. I recessed a proprietary 3-position rotary switch to be flush-mounted, rewired it so that it is On-Off-On, and for my prototype to have legible lettering. It looks like it could have come OEM.

* Caveat * In the Off position, where Pink-Black isn't connected to anything, triggering TRAC off, I find that you have to shut the engine off and back on to reenable TRAC. I don't think this is a good feature, so I'm abandoning On-Off-On and going with an On-On switch that simply enables VSC On or Off.

View attachment 4080284View attachment 4080285

As promised, I made the files available for free download (both portrait and landscape versions). I'm not an official vendor so I don't want this to be an ad, but if you are interested in a pre-printed and pre-wired rotary switch, feel free to reach out.

Again, thanks to Odyseuss for making the wiring part accessible.

Hi will you sell this? .. also thank you for advising not to a 3 way.. and to do the simple on / off. or alternatively.. how did you gt that little sliding decal?

 

[primeral]

Many switches will work.. look for "DPDT

Hi will you sell this? .. also thank you for advising not to a 3 way.. and to do the simple on / off. or alternatively.. how did you gt that little sliding decal?

I just found the industry standard traction control symbol and sketched it in Solidworks so it became a debossment. Reach out to me if you'd like one