VSC TAC light and Engine Check light on

ROBERT GARCIA

• 926 Answers
• Posted on May 03, 2009

SOURCE: Why is the vsc light check engine light and trac

to reset for a momentany malfuntion,disconnect the negative battery terminal few minutes, reconnect,start engine and drive to check

SOURCE: LS430 check VSC light on after check engine light on

My car (06 GS430) began giving me more frequent "Check VSC" warnings. (Code P0455 in my case. Really glad I bought that OBDII tool--resetting the codes is a snap!)

I knew that a loose gas cap could cause this, so normally I just give it a twist and it tightens. Now I found that no matter how many "clicks" I tightened the gas cap, it would not cinch down snug. The lightest turn the opposite way would open it.

I was all set to head over to CarQuest for a replacement filler cap. But I thought I'd inspect mine first just to see why it stopped holding. Upon inspection, I saw that what holds the cap in place is compression of the rubber O-ring at the back of the cap, which compresses against the filler neck. That apparently was no longer happening.

I carefully removed the O-ring from the cap--using screwdrivers to lift it over the edge of the groove it sits in. Like removing a bike tire from the rim--work your way around. Then I cut a strip of electrical tape about 10" long, and 1/4" wide. I wound this into the curved groove where the O-ring normally sits, just to build up a little thickness. Put the O-ring back in place. Done.

Now the cap tightens like it's supposed to, and thus far, it has stopped the VSC error codes. Don't know if it will fix your issue or not, Good luck.

SOURCE: On my Toyota Sienna 2008, my check engine light,

On most Toyota's that are equipped with Cruise Control (Vehicle Speed Control or "VSC") and with Traction Control System (TCS or "Trac") all of these lights will come on at the same time if the Engine Control Module (ECM) determines that there is a fault in the engine management system that 1. Prevents the engine from being properly controlled. 2. Prevents the VSC from being properly controlled 3. Prevents the TCS from being properly controlled 4. Any combination of items 1,2, and 3.
Most of the time it is caused by a single fault in the engine management system. Fault codes are codes that are output by the ECM to let a diagnostician know which of the many systems, that are monitored by the ECM, is malfunctioning. To find out what the actual cause is, you must scan the ECM for fault codes then use this information to begin diagnosis of the system that the fault codes point to.

SOURCE: the tac is not working

ur amanti surely has some bad sensors. get them changed.

SOURCE: 2008 Toyota Sienna - To

I will assume you have no owners manual,no one does
& refuse to buy one

No one, after 30 years of having any kind of malfunction
indicator lamps on the dash ,of all vehicles, seems
to remember what they did last time they got one

VSC & Trac are to some extent part of your ABS Braking
System as well as stability control systems & on & on

So you check for any active codes that set those dash lights
You -- meaning a repair shop

Then diagnose the areas of the systems they point you to

Then come up with a solution ,only after component testing,
because you never replace any parts until you know how they
work & that they failed

Long story short,you can not work on todays vehicles anymore
The pros can barely do that

So your off to a repair shop or if you enjoy questionable
results and have lots of disposible income, a dealer will
be happy to ruin that experience