VT Calais "Trac Off" Light coming on

[stirringaxe]

PROBLEM SOLVED SEE BELOW!


Hi guys, I'm a newbe here.

I have the Trac Off light coming on sometimes & it will not go out unless I turn ign off & restart the engine.

This is an ittermittant fault happening every few days or so.

I have searched the threads & it sounds similar to the ABS Module faults listed by others.

Is this the case ??

If so where on the vehicle is the module mounted ?

(see 2 pics attached)

Are either of these it ?

[Optimus_Prime]

Do you have traction control?

Its supposed to only turn off when you manually switch it yourself, and will reset to default ON when you turn the ignition off & on again.

[stirringaxe]

Yep have definately got traction control.

When this problem happens the button has no effect on turning the trac off or on....

[WinterVX]

I had the same sort of issue a few months back, appart from the fact I just wasnt
able to turn trac control off or on manually. Might be worth asking Holden or a mecahnic
to check out the lines to your ABS module, they may have become worn or rusting out,
and shorting the switch out.

This is what happened with mine, Tech refreshed the connections and cleaned out
all the crap over the years, and works perfect again.

Worth a shot

[stirringaxe]

Thanks for the help & advice guys.

I still want to know where the ABS Module is mounted ?

(see 2 pics attached above)

Are either of these it ?

[accentstencil]

Thanks for the help & advice guys.

I still want to know where the ABS Module is mounted ?

(see 2 pics attached above)

Are either of these it ?

Picture 1 is your ABS module.

the easiest way to find out if it has a faulty ABS module is
start the car & when the lights come on, is the oil light on?
if so unplug the big connector on the ABS & see if the oil light goes off.
if it does it will need a new ABS module, now there have been a few people say to remove the connector & clean it will fix it, i have never seen this as a long term repair, the fault is a known electronic issue in the module & no amont of cleaning the connector will fix it permanently

Rob

[stirringaxe]

Thanks for the info

[WAGON MAN]

stirringaxe have a look at this thread

[stirringaxe]

Update....

I had this issue & checked out the ABS module & all sorts but, no faults were found. The local Holden mechanic said this to me after all the wasted effort:...

" When you start this model wait for at least 3-5 seconds after the engine is running before you engage drive or reverse because the ABS module takes a little bit of time to do its checks & be ready for work "

"If you move off too quickly the trac light will come on & can't be turned off till you restart the engine again"

Now I don't know if that is true or not, but since being told this & following his advice, my trac light has never come on again while driving........

[VTcalaiskerst]

I have the same problem with my VT calais. I have the abs and trac off lights come on but have noticed (sometimes) if I turn the car off then on again it wont come back on. I also noticed that if my petrol tank is full the lights dont come on till I have used at least half a tank?
I tried the 3-5 sec wait but they still stayed on.
I will have a look at the contacts and give them a clean to see if it helps.
Otherwise I am off to the mechanics.

[stirringaxe]

Frustrating aye. I have always loved the VT & I think it's a bloody good looking car. I wouldn't sell it, but boy do they get some werid stuff happening to them. LOL

[Sphinx]

had the same hassle in my '00 WH. Turned out to be a dodgy ABS component. replaced under warranty. first time they reset the computer and said all is ok, lights came back on, took it back again and they obviously looked harder and found it to be a hassle with the ABS.

[stirringaxe]

Hi guys, a follow up to this trac light coming on issue. Seems to have stopped happening now. ABS module checked but fine. The only comment I have got back which seems very plausable.

Holden dealer locally advised this senario. I have replaced all the factory stereo gear with custom system. Now this system isn't extremely flash compared to some I have seen but does have amps 15" sub etc etc. It is capable of flattening the cars standard battery in an hour or so if left on without the engine running.

They said if the battery is near flat or flattened by such a senario then I will be getting all sorts of ghost faults & messages. So to solve that I have fitted a much more capable battery with much more cranking amps & life. Seems to have cured the problems all together.

So before chasing ABS module faults it might be adviseable to check the charging of the battery or look at uprating it if you have stereo gear that can flatten it easily.