VSC OFF switch install.

[nitteo]

never been so happy to see a light

btw i gave myself a scare...crimping the ground wire to the ecu was such a bear i celebrated to early. as soon as i crimped i was likke yesssssss! started the car and saw brakes and abs lights. i was devastated then i remembered DUH connect the terminal to the ecu!

 

[Pyrenees]

I should add to my previous post a moment ago, I pulled the bulb so it didn't annoy me. Longer-term I'd like to wire a switch on the left panel, as others have done. For the moment, I'm just hopeful that this stops the unnecessary VSC interventions.

 

[TN03Cruiser]

never been so happy to see a light

btw i gave myself a scare...crimping the ground wire to the ecu was such a bear i celebrated to early. as soon as i crimped i was likke yesssssss! started the car and saw brakes and abs lights. i was devastated then i remembered DUH connect the terminal to the ecu!

View attachment 2024466

Now you just need to pull that bulb out.

 

[ponytl]

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

thank you my wife was going nuts with the beeping going around tight turns... thank you

 

[Pyrenees]

Have been driving around every day for the past week and it hasn't activated. This worked great.

 

[TN03Cruiser]

Have been driving around every day for the past week and it hasn't activated. This worked great.

It worked on mine.

 

[Gdub216]

I bought a on/off push switch from 4x4. I need some help figuring out how to wire this:

1-Green: power source w/ inline fuse
2-Red1: connect to relay or accessories
3-Red2'Normally connected to dash light circuit to be ON when your dash lights are ON.
4- Black: Ground

Please help me decipher. I would like to have a switch and rather not go nuclear and straight ground the pink wire.
1-connect to power source via something behind the switch panel. Self explanatory
2-connect to Pink wire from ECU?
3-connect to A43 ECU ?
4-Have a wire from the 'groudning' screw into 4?

Or do I need to set it up with a 5 pin relay like Africa?

 

[gmjsosa123]

I am interested in purchasing a 2003 LX470 but have been reading issues that they brake out of the blue on the highway and can an accident. I would like to know if I cancel the VCS and Atrac would this prevent from braking on the highway spontaneously? What are the cons of having a disabled VSC on the highway.

 

[Odyseuss]

I bought a on/off push switch from 4x4. I need some help figuring out how to wire this:

1-Green: power source w/ inline fuse
2-Red1: connect to relay or accessories
3-Red2'Normally connected to dash light circuit to be ON when your dash lights are ON.
4- Black: Ground

Please help me decipher. I would like to have a switch and rather not go nuclear and straight ground the pink wire.
1-connect to power source via something behind the switch panel. Self explanatory
2-connect to Pink wire from ECU?
3-connect to A43 ECU ?
4-Have a wire from the 'groudning' screw into 4?

Or do I need to set it up with a 5 pin relay like Africa?

It seems like you are over exaggerating the complexity of this. There isn't anything nuclear about grounding the pink wire, but you may be much more likely to have issues resulting in damage if you wire it up like you mentioned above. The switch could be used to ground the pink wire if you want a switch to control the circuit. A power source to the switch is not necessary, unless you really need to have the switch lighted, but your going to get a dash light on anyway.

 

[Odyseuss]

I am interested in purchasing a 2003 LX470 but have been reading issues that they brake out of the blue on the highway and can an accident. I would like to know if I cancel the VCS and Atrac would this prevent from braking on the highway spontaneously? What are the cons of having a disabled VSC on the highway.

If you turn the VSC off with this method, then the VSC will not operate at all. I don't see much reason to disable the Atrac, and that isn't really what this thread is about. The con would be that the VSC does not operate.

 

[ponytl]

Thanks again to all that contributed to this thread... did my second one today... in less than 5 min... 200 miles later all is good

 

[Pyrenees]

Mine is still holding steady. Great mod. It was the only thing I wasn’t so sure about with this vehicle and now it’s fixed.

 

[schlaker]

Can anybody confirm that this mod works on later models, 2007 to be specific? And that A43 (Pink/Blk) is correct for this year?

 

[nitteo]

Has anyone who has done this determined if it disables ATRAC also?

I have wheeled it since the vsc delete and can confirm that ATRAC is not affected by this.

I am planning to add a switch later on just for peace of mind / flexibility.

 

[KraziAzn]

So if I were to simply just cut Pink/Black pin 3 wire, this will permanently delete the VSC right? I no longer have a use for it since the trac / slip light came on 4 separate times the past 2 months. Don't feel safe driving the rig since it is so unpredictable.

 

[TN03Cruiser]

So if I were to simply just cut Pink/Black pin 3 wire, this will permanently delete the VSC right? I no longer have a use for it since the trac / slip light came on 4 separate times the past 2 months. Don't feel safe driving the rig since it is so unpredictable.

Turn the VSC off.

 

[abuck99]

Reading back through this thread seems that several people cited they had the VSC engage under similar circumstances: turning, sweeping turns, off camber turns etc. Brings the question; are all of these vehicles lifted: ie. larger than stock tires, aftermarket lift kit etc and had any ever performed a Zero Point Calibration after your lift? Anyone with a bone stock rig experiencing the intermittent VSC engagement? Its meant to be performed after an alignment, lift or any related work on the steering system. Pondering if the symptom on lifted rigs is corrected by performing the ZPC.

FWIW- my 05 is lifted, armored, larger tires and have not experienced the random VSC condition. But I have performed a ZPC after the lift and later after UCA install and subsequent alignments.

 

[KraziAzn]

Thanks forum members! I was able to turn off my VSC permanently. I just grounded the wire, didn't bother with switch.

I didn't bother to find out why the VSC was acting up since this was such a simple / cost-effective fix.

 

[nitteo]

Reading back through this thread seems that several people cited they had the VSC engage under similar circumstances: turning, sweeping turns, off camber turns etc. Brings the question; are all of these vehicles lifted: ie. larger than stock tires, aftermarket lift kit etc and had any ever performed a Zero Point Calibration after your lift? Anyone with a bone stock rig experiencing the intermittent VSC engagement? Its meant to be performed after an alignment, lift or any related work on the steering system. Pondering if the symptom on lifted rigs is corrected by performing the ZPC.

FWIW- my 05 is lifted, armored, larger tires and have not experienced the random VSC condition. But I have performed a ZPC after the lift and later after UCA install and subsequent alignments.

im gonna install a switch on my vsc delete and perform an experiment with ZPC

 

[uzj100]

Team 100. Safety guy coming in. VSC can save you and your families life in high speed "moose test" maneuvers. The VSC can easily out drive any human in most situations. I would recommend an on / off switch and try the ZPC after a lift. That is why some type of VSC is standard on almost every SUV and pickup out today. That is why it was added to the LC in 2000 because in the moose test the 1999 LC would come up on two wheels when the steering was jerked hard at speed. PSA over. ;<)