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Old 10-06-2018, 12:45 PM #61
gigem891 gigem891 is offline
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My TRAC/VSC issue resolved

Wifeís 2001 Limited 2wd, 253k mi. now, has had regular TRAC/VSC Engine lights on issue for past couple of years. Pretty much just cleared codes with code reader from time-to-time, but they always came back within a day or two. Just returned from an out of state trip for wifeís motherís funeral, and some of the worst electrical problems all along the way. Had battery replaced under warranty, and replaced OEM alternator which finally died on the trip. After replacing recharged warranty battery following new alternator install, in Autozone parking lot no doubt with wife, 2 kids, dog, and cat in tow, all dash lights off and havenít returned in 4 days now. Me thinks faulty alternator was somehow tripping the PCM to throw the TRAC/VSC Engine lights. Will report back if they come back on.
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Old 12-08-2018, 09:15 AM #62
jhproctor jhproctor is offline
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VCS warning and tire pressure warning lights on solutions

VSC, track, engine, and tire pressure warning lights all on for recently-purchased 2006 limited edition 4runner.

Filling spare tire to 32 psi fixed the tire pressure light.

Disconnecting car battery for thirty minutes corrected the other warning lights.

Thanks for the advice!
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Old 01-18-2019, 09:23 AM #63
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Similar problem here. 2018 4Runner with 18,000 miles. Six weeks while driving on the interstate close to Memphis the check engine and trac off lights suddenly came on and the vehicle went into limp mode. After getting towed to a dealer in Memphis it was determined that water had gotten into the air injector system and all injectors and the pump had to be replaced. It was covered under warranty but I was out a hotel stay while it was repaired. This week while driving close to Knoxville the same thing happened. Got a tow to a Knoxville dealer and this time it was the emission valves and some other parts. Now I'm out another nights stay in a hotel plus overages on the tow. So far I'm out about $500 for warranty work on a new vehicle, and Toyota had invested over $4,500 in parts plus shop labor for the repairs. I plan to take this up with the dealer where I purchased the vehicle and see about some help on my expenses plus a possible extension of the warranty on these systems. We've had six Toyotas over the years with no major problems and now this new one is nothing but problems.
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Old 01-19-2019, 05:13 PM #64
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VSC off, trac off, check engine on

I had the same lights come on after I let my parents borrow my 02 4runner. At first I thought it was a loose gas cap. But the lights stayed on for a few days so I took it to my local firestone to get it scanned. They told me it was likely a faulty O2 sensor. So I purchased a new one and changed it out (a quick and cheap repair) and my lights never came on again.
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Old 06-28-2019, 11:09 AM #65
DevRose12 DevRose12 is offline
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vsc trac vsc off check engine 4runner

Have a 2005 Toyota 4runner Sport. I have been dealing with this issue for months now... No solution as of now. I bought a new gas cap and ensure the gas tank is sealed. I have unplugged the battery and it did make the lights away temporarily... but then 1-2 days later its right back on. I haven't changed the O2 sensor, maybe that is the answer? Everything drives fine, no issues at all. Just annoying and scary for others when they drive my car.
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Old 06-29-2019, 10:43 PM #66
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I got the same model. If youre getting a p0420 code it's likely an O2 sensor, you can get spark plug non-foulers and install them on the sensor to see if the code clears, then you know for sure before buying a new sensor. If you live in a place where they salt the roads you may have an exhaust leak so check your flanges. I bought mine in the northeast 3 years ago and recently heard a rattling near the back only to discover the tailpipe had rusted clean through just after the muffler, oh well who needs it.
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Old 08-03-2019, 02:02 PM #67
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2004 SR5 here same issue.
Cleared all the codes.
The trac lights came back on immediately but the check engine light stayed off for a couple days before coming back on.

I'm hoping the block isnt cracked but thats for another post.
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