Is it possible to deactivate vgrs? (1 Viewer)

[VonclicasLX]

Hi guys,

Having a problem with the 2006 lx470 vgrs for months, since i replaced the steering rack, i reinstalled the original and got it rebuilt.

I also replaced the bottom steering knuckle.

Now when entering the highway and turning hard, the wheel gets uncentered, and the vgrs light turns on.
Mechanic recalibrated the steering, clears the codes, but the codes come on after sound a hard turn again.

Is there a safe way to turn off vgrs?
He quoted me 10k just in parts.

Thanks in advance

 

[hoser]

Search "zero point calibration"?

 

[VonclicasLX]

Search "zero point calibration"?

Done, problem keeps coming up

 

[Import Driver]

You can just unplug it from the VGRS computer. It will (should) then function like normal power steering. The VGRS light will stay on and there is no known solution for that. Although you could take the gauge cluster out, pull the cover off and block the light with back electrical tape.

There's a thread about unplugging it around here somewhere...

Anyway, I was having issues for awhile. It seems I wasn't doing the zero point calibration correctly the first couple times. All is well now though.

 

[VonclicasLX]

You can just unplug it from the VGRS computer. It will (should) then function like normal power steering. The VGRS light will stay on and there is no known solution for that. Although you could take the gauge cluster out, pull the cover off and block the light with back electrical tape.

There's a thread about unplugging it around here somewhere...

Anyway, I was having issues for awhile. It seems I wasn't doing the zero point calibration correctly the first couple times. All is well now though.

Thanx, I am just tired of the situation,
Tired of having to deal with mechanics that can't fix the issue and are just trying to guess like many of us.

I am not willing to waste money on this, so I am fine with having the light on.

 

[Import Driver]

Thanx, I am just tired of the situation,
Tired of having to deal with mechanics that can't fix the issue and are just trying to guess like many of us.

I am not willing to waste money on this, so I am fine with having the light on.

@VonclicasLX I feel your pain so I went back and checked my bookmarks...

2006 Lexus LX470 VGRS issues

Have the same issue , replaced alt and batt. Vgrs and vsc lights on. Iv driven it over 100 miles now and lights still on . . Update, it's been about 3k miles since those dredding lights came on . I finally got tech stream . Erased stored codes but c1289 and c1531 still active . After all...

forum.ih8mud.com

Post #86 on page 5 and read the following 8 or so posts. It's a quick read.

 

[VonclicasLX]

Thank you. Will do.

The mechanic just called me, he said even after disconnecting the vgrs plug, the steering gets disaligned right away . Does this make sense?

 

[Kabanstva]

Thank you. Will do.

The mechanic just called me, he said even after disconnecting the vgrs plug, the steering gets disaligned right away . Does this make sense?

Did he drive the vehicle a decent amount afterwards? VGRS will self adjust after you drive it around the block a few times from my experience. I used to disconnect my battery for winter storage which always triggered the VGRS system. Now last several years I just keep it on a battery tender.

 

[VonclicasLX]

I mean, after disconnecting the vgrs cable, Meaning no vgrs is active.

If there's no vgrs, nothing should work out be calibrated regarding vgrs.

 

[Import Driver]

I know this isn't helpful but it gets difficult when dealing with mechanics. Impossible for us to know if he has any clue what he's doing. Not even sure if he's using tech stream.

 

[VonclicasLX]

Yeah, several times I am the one that is researching all over the internet to figure what could be the causes of certain symptoms,
Even yesterday i had to refuse to replace rear springs for $1000, when we end up finding out, from a forum's tip, that the issue was with the rear ahc sensor that was loose. The tip pointed to rust in the sensor, but the sensor was actually loose and moving around.

Can't blame mechanics either, they can't be experts in every car models in the world, I just need to take the lead sometimes and at east to part of the research.

I hate doing the work, but i am
Not that bad doing some research and make some sense out of things

 

[2001LC]

There are a few possibilities.

ABS is kicking in very lightly. I've only seen this when AHC deleted and wiring messed with. AHC, VGRS and ABS along with many sensors all work together.

But this may be case of not clearing & centerning VGRS steering in proper sequence.

ZPC, ABS:

Not only must zero point calibration (ABS), not be undone (we get a DTC (AKA code) when undone), it should be calibrated. All DTC's, need to be cleared. In addition all Flags in VGRS history need to be cleared.

Then calibrator and center in tech stream, as normal.


VGRS actuator may have damaged during R&P removal. Unfortunately, many shop pound in direction of steering wheel, to remove union of intermediate shaft from pinion. Lexus has TSB, in it's snap ring recall TSB, warning to not do this. If actuator damaged, it is in failsafe now. Test is while idling and stopped in park. Turn steering wheel lock to lock. If VRGS working, we get ~2 1/3 turns. Not working we get closer to 3+ turns of steering wheel. like 98-02 LX or land cruiser.

There is the normal calibration & centering of steering wheel done with tech stream during alignment. There's also, a longer calibration. This is usually only needed, if VRGS CPU replaced. But in your case I'd do it also, above clearing and centering of steering, if it fails to correct issue. You'll find it deep in the Snap ring TSB I attached. It involves starting and stopping engine and turning steering wheel 15 times on level ground.


Also note, sometimes in VGRS is off. Yet we do not get a VGRS light.

TSB.

 

[VonclicasLX]

I actually have some sort of issue with the abs, let me talk with them again.

 

[CrowsFootSpanner]

Just jumping in on this thread.
My VGRS light has come one, my steering wheel is out about 70 degrees from centre. It's a 2003 4.7 RHD with 107K miles. I only have the very old, basic techstream. It gives me a code of C1289 which makes no sense as its' not related to VGRS as far as I can see. Wiser sages may know better.
I checked the steering angle and got 1150 and when on live data, it didn't change from that value even when turning the wheel. I'm experienced with lots of diagniostic tool, just not techstream. I'm assuming the value should change in a live chart feed.
This would suggest a steering angle sensor failure (or wiring) which , would obviously knock out the VGRS.
Any thoughts? do steering angle sensors go wrong? how easy are they to change?

 

[VonclicasLX]

Just jumping in on this thread.
My VGRS light has come one, my steering wheel is out about 70 degrees from centre. It's a 2003 4.7 RHD with 107K miles. I only have the very old, basic techstream. It gives me a code of C1289 which makes no sense as its' not related to VGRS as far as I can see. Wiser sages may know better.
I checked the steering angle and got 1150 and when on live data, it didn't change from that value even when turning the wheel. I'm experienced with lots of diagniostic tool, just not techstream. I'm assuming the value should change in a live chart feed.
This would suggest a steering angle sensor failure (or wiring) which , would obviously knock out the VGRS.
Any thoughts? do steering angle sensors go wrong? how easy are they to change?

Hi there , no worries jumping on the thread,

But i would suggest to create a new thread, if the symptoms are different from the original thread, so we can get proper organized questions and answers.

Next time guys have the same symptoms as yours, they can easily can find the resolution.

 

[captain wk]

i think you can delet it