strange light showing

[skyway]

Hi Guys,

 

I have a 2002 Gs 300 90k miles which has now a VSC light coming on when I drive it but does not come on if I turn the engine off and on again until I drive.

The car was sat for 9 months gathering dust, It has a brand new Battery I have checked the Petrol cap sealing ok which it does. 

I have tried the VSC button on the centre console.

It was running great with no warning lights when I parked it many moons ago.

If anyone has any ideas they would be greatly appreciated.

Thanks for your time 

[The-Acre]

5 hours ago, skyway said:

Hi Guys,

 

I have a 2002 Gs 300 90k miles which has now a VSC light coming on when I drive it but does not come on if I turn the engine off and on again until I drive.

The car was sat for 9 months gathering dust, It has a brand new battery I have checked the Petrol cap sealing ok which it does. 

I have tried the VSC button on the centre console.

It was running great with no warning lights when I parked it many moons ago.

If anyone has any ideas they would be greatly appreciated.

Thanks for your time 

Have you got a cheap code reader? When the VSC light came on in my 2005 GS an eBay reader picked up an o2 sensor. Even a tiny hole in the exhaust can cause an o2 error.  It seems with a Lexus even looking at the car in the wrong way can trigger VSC!

[rich1068]

Hi Allen.

Is it VSC and VSC Off? As in, two warnings. One showing a VSC is faulty and one showing VSC is off? Have you or anyone else connected a code reader?

[skyway]

Hi sorry been away... yes it is both Vsc and vsc off..... It does not show any codes on my code reader and the warnings go away if i turn the car off but both come back on only as the car moves away.

 

[skyway]

On 12/7/2019 at 11:17 PM, The-Acre said:

Have you got a cheap code reader? When the VSC light came on in my 2005 GS an eBay reader picked up an o2 sensor. Even a tiny hole in the exhaust can cause an o2 error.  It seems with a Lexus even looking at the car in the wrong way can trigger VSC!

I will check under the car when it stops raining for an offending hole.... thanks Phil

[skyway]

I also changed the fuel filler cap .

[rich1068]

Your GS may have the same software glitch as mine. Just connecting an aftermarket code reader makes the VSC and VSC Off lights come on. So you may have connected a reader for something else and lo and behold you get this fault. This is a recognised fault with some GS and the only way to clear it is with Techstream.

If this is the problem when I get back in to work tomorrow I'll post up a fix.

[rich1068]

A bit more info.

If you have Techstream or use a garage that has you're looking for C1336 Zero Point Calibration Of Deceleration Sensor Undone in the ABS/VSC/TRC module. To fix it once you've found it go to Utility and then Test Mode. Follow the instructions for recalibration from there.

The fact that yours is a 2002 is what makes me think this is the issue. Every time a code reader (including those used by Lexus dealers) is connected the car will throw this code. It's a known issue from back in the day that was never fixed by Lexus. For example, I have an emissions warning light that occasionally comes on after a motorway run. If I connect my laptop to clear it I will also have to recalibrate once I've moved the vehicle a few yards. Crazy but that's how it is.

You're a long way from me but if you're ever Oop North I'm happy to look. I'm sure there are other members more local to you that would do the same.

[skyway]

Thanks for the information and offer Rich :)

it would be a shame to scrap the car... as its only got 90k on it..... its mot time also so I need to sort it before I can drive it

[TigerFish]

If the vsc has been triggered by the code reader, try the reset procedure described in the post I made before in the link below.


https://www.lexusownersclub.co.uk/forum/topic/83148-gs300-2002-vsc-vsc-lights-on/



Sent from my Iphone using Tapatalk Pro

[skyway]

Thanks RIck... 

The light does not stay on and clears as soon as I turn the key off and on again.

So I think its seeing a fault which then clears.

[Texas]

So would a soft reset ie disconnecting the vehicle negative Battery connection for a short time 10-15 mins be likely to resolve this as there is no real fault as such with the car?

paul m.

[skyway]

Thanks Paul I will try that this morning