Yes I did sir, you are correct...31 grueling days of driving Cavaliersand Kia Rio's sucked big time *LOL*!!!

DAN

 

FYI the lights typically will flash for ANY ECU error code. it's a sign that tells you to get the error codes read and find out what is wrong with your car.

 

I had the same problem, the lights came on a couple of hours later after I installed an alarm. I disco'd the negative line from the battery and it took care of the problem. It was something simple, but you guys have tons of stories on why it's been going on, wow.

 

Well, so far my xB has been through 3 mass airflow sensors in as many weeks. According to Don Jacobs Scion in Milwaukee (that's where I got the 3rd sensor installed while on a road trip, with the help of Scion Customer Assistance) the VSC and TRAC OFF lights come on whenever the Check Engine light comes on. They also replaced the AEM air filter, but the technician said that these oiled cloth air filters are notorious for knocking out mass airflow sensors, even if they're installed in a standard airbox. The engine code reads, 'System Too Lean'. The first item in the troubleshooting area of the shop manual is, 'Air induction system', then 'Injector blockage', then 'Mass airflow sensor'. I'm not convenced that my problem is truely solved, or that it's wholly caused by the the cold air intake system. This is a sensitive system, I'll keep you guys updated.
By the way, Scion Customer Assistance is fantastic!!!

 

I am currently having the same CEL indications.
Can't be my MAF sensor because I'm not running one (Using HKS VPC2).
The knock sensor sounds like a possibility, will have to replace it and see what happens.

I'm guessing that with the TRAC OFF indication it actually turns off the traction control reguardless of the switch position. I have gotten the wheels to spin (some) in first and second gear (automatic trans).

 

the same thing happened to our 4runner and the dealer told us it was going to cost more than $1000 to fix it......it still hasn't been fixed

 

Recently I had this problem, I had changed my gas cap to one that wasn't emissions correct. I recently read about this in this forum. after I put the oem cap back on and reset the lights by pulling the EFI fuse for a few seconds the lighs went out and haven't come back on.

 

I bought a used 04 XB AT, with 72K+ miles, on test drive the lights weren't on, but loud turbine sound from left rear. Used car dealer replaced left rear wheel spindle, sound went away, but now all 3 lights (TCS/VSC/CEL) were on and stayed on. He checked code, I don't know what it was, but he supposedly took it to a Toyota dealer, and they "fixed it". Except now, those lights don't come on at all when you first start the car, (owner's manual says they should) and the traction control button doesn't seem to do anything - no light on dash, no change in car performance. So I'm wondering, did they just disable the TCS/VSC?

 

damnb, my lights TOO have now come on.

Im just scared if it's a MAF sensor problem or my brakes. Seriously though, I don't hear the ABS clicking at the point where I'm in motion (which is just around 15mph). Im kind of scared, but it still runs. Nothing weird when I brake or what not, its just, them damnb lights on!

My lights that are on are of course VSC/ABS/TRAC OFF/Brake

: (

 

Okay, so all three of these lights came on my car yesterday. I have the exact same situation as the poster that started this. I have the AEM CAI from Scion, and about 21,000 miles on my car. Judging from what you guys are saying, I have a couple other things that may contribute:
I replaced the AEM filter with a K&N (which are oiled, the AEM filter is dry)
As for the VSC and TRAC OFF, I replaced my steering wheel and ripped out that wiring harness and I think that has something to do with those lights, because they come on when driving in neighborhoods (a lot of consecutive, tight turns) But now all three lights are on all the time. How much have you guys been spending to get this problem fixed? How much do they charge for diagnostics? I think AutoZone does it for free...

 

I had similar problems, the dealership replaced some kind of gear related to the timing and VVT and My problems are gone.

If you guys want details let me know and I can post everything when I get home and look back at my paperwork.

 

Here's what AutoZone's diagnostic thing had to say:

"The PCM has determined that the voltage signal from camshaft "A" position sensor in the bank 1 indicates a timing over retarded condition. (Bank 1 identifies the location of cylinder #1, while bank 2 identifies the cylinders on the opposite bank.)"

Anyways, after they did that, I drove off and my lights weren't on anymore...I'ma talk to the dealership about it tomorrow when I get my oil changed.

 

once the CEL is triggered, your VSC/TRAC OFF lights will AUTOMATICALLY come on, regardless of the problem. it will disengage those items
get it scanned, find the code to see the issue

 

That was the exact same reading I was getting. My little box went through hell before they replaced the right part... At first they said it was a VVT Valve but that didn't fix the problem... When they finally fixed the problem they replaced what they called the VVT Gear

***THIS WAS ALL COVERED BY WARRANTY****

My invoice said:

14064 Code P0012 Cam position over retarted tech line case TA061220151 Recomend Replace VVT gear removed timing chain timming working properly now cleared code returned to customer.

^I know this dosen't make much sense it's just what they typed up on my invoice.

This was about 2 months ago 2,500 miles. I have not had any problems since.

 

Here was my original post

https://www.scionlife.com/forums/vie...789&highlight=

 

the Tech line case # is with Toyota
they most likely were having troubles figuring out what to do and where to start, so most techs in that situation will call Toyotas Tech line and walk them through a step process to fix the issue. I guess first try (with tech line) was the solution, since you've had no issues since.

IMO they should have called toyota tech the first time on this, would have made things a little simpler

 

On my home from from work, driving a steady 7o mph for about 80 miles, the lights popped back ( Check Engine . VSC, Trac Off ) .... No weird noises and I could not tell a difference in the ride ....

Here is a strange kicker, when the error lights came on, I stopped several times to do some running and each time the XB got restarted, the lights still appeared, but after about an hour those error lights shut off ?

I have no idea, nor does the dealer what is the issue !

So, my same issue happened twice so far !

 

if you have an intake... its most obviously a dirty MAF..

I figured mine out. I just have to clean the small damn thing.

Hope you can fix it soon..

 

No intake - This one is bone stock !

Still a MAF Sensor ?

 

Can be... thats always the first problem... Check how much sut is on the sensor...

If not then it can be an ABS problem... or the stupid gas cap like everyone else had... ehhe.