Scion xB Warning Lights

The VSC and check engine light have gone on three times in the last week. The first time it happened, I called the dealer. They told me to tighten the gas cap and then turn the car on and off three to four times which would reset the computer. This worked for the first and second incidents. Unfortunately today this occurred again and the lights are still on. Worse yet, the vehicle started to exhibit SUDDEN ACCELERATION. Speed went from about 62mph to 67 mph. Waiting for dealer to call me back and repair. Vehicle has 30,000 miles on it.

#11 of 15 VSC and CHECK ENGINE LIGHTS by triste1

Aug 16, 2010 (11:01 pm)

i bought a 2009 scion xb 24000Miles (salvage title) two days ago i drove 120 miles first day, no problem second day i drove it to auto zone the VSC and Engine Light come on, so i unplug battery for reset and after 15miles of driving lights come on again.... need help....Scion dealer cover it with a salvage title or not? this problem it serious?

#13 of 15 My Experience with Warning Lights by lmichaud

May 28, 2011 (5:23 am)

We have a Scion XP that we bought new in 2005. It has been working great (knock on wood).

I have had similar experiences with the VSC, Traction and check engine lights all coming on for no apparent reason. At first I was very concerned, but now I believe it is related to the sudden changes in temperature, and it's effects on the pressure level in my gas tank.

The first time was two years ago, I reset the lights with my OBD-II diagnostic reader. It did not come back til the following year. And again, this past spring it occurred.

It usually happens in the spring, when (in northeast Ohio), the temperature can vary greatly over night.

Now, I just open and close my gas cover to remove any pressure (this part might be more of a superstition on my part) and the lights eventually go off on their own.

Regarding resetting the maintenance light, what works for me is to:

> Turn the ignition key forward two clicks (so the Odometer mileage is displayed)
> Make sure it is displaying overall mileage (not the TripA or TripB mileages)
> Turn the ignition off
> While pushing on the reset button,
> Turn the ignition key forward two clicks again (keep holding the reset button in)
> You should see a dashed line appear across the odometer display
> When the dashed line is complete, you can turn off the ignition
Note: You do not have to start the engine during any of these steps, just turn the ignition key two clicks.

Good luck.

#14 of 15 Re: Service lights on [chewbacha] by aej

Jun 07, 2011 (5:12 pm)

Replying to: chewbacha (Apr 24, 2009 8:29 pm)

i have a 2008 scion xb 40,000 miles. no problems so far. use full synethetic mobil1 oil in it. had at dealer for oil change last week. couple days later seat belt light comes on and beeps the seat is empty.no other lights come on. this has happened a couple more times since then. should i be concerned? thanks

#15 of 15 VSC, Trac, Check Engine by edjwl

Sep 26, 2012 (9:26 am)

For anyone getting the VSC, Trac, Check Engine combination, you need to plug it into a computer and pull the code. This is a very specific emissions leak for any one of I think 4 issues. I myself have had this come up on my 2005 scion xB and the error code was P0456 - Evap Emissions control - small leak. I found the leak and fixed it... the part I needed to replace was roughly $250 but that was for where mine was leaking... sometimes it's the filler neck, sometimes the charcoal canister. It COULD be as simple as tightening the gas cap but good luck with that one. This is a known issue for Scions. A lot of times this issue is cause by filling it too full with gas. How many of you have pumped in gas until it stops but then continue to "top it off" or "round out your dollar amount" ? That can cause problems as gas tends to be in places it shouldn't then it eats through the metal components, thus causing problems down the road with emissions leaks.

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