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Old 03-22-2011, 10:27 PM #16
MJ Philbin MJ Philbin is offline
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I have had very similar issues with check engine lights. In the past, the check engine light would come on, and the code would only reveal a problem with one of the 02 sensors. After fixing that the last time, the traction control light wouldn't go away. Local guy was chalking it up to a wheel or abs sensor, which at this stage I refused to replace. My brother in law is a mercedes electronic specialist, and he borrowed my truck and came back within a couple hours with it fixed. No parts, and this was about 5K miles ago. He claims to have re-programmed a "yaw sensor" which evidently is something that tells the "rescue me" computer that the truck is not sitting level, or at risk of tipping over. I didn't realize that a part like that could be adjusted or repaired in any way. He didn't replace anything, though, and it's been perfect ever since. The traction control system does work now (think: Chicago winter), and life is good!
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Old 03-23-2011, 04:51 PM #17
toyotagirl22 toyotagirl22 is offline
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Ok, so I have a 2001 4-Runner with 275000 miles and my TRAC OFF, VSC OFF, and CHECK ENGINE lights have been on for over a year. Scans have pulled no codes, gas mileage hasn't changed and still runs great. Light are just annoying!
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Old 04-15-2011, 12:22 AM #18
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Check engine light and VSC off and Trac off lights on

Thanks forum guys! My 2004 4-Runner had the Check engine light and VSC off and Trac off lights on after a gas stop and wash. From the Forum I tightened the gas cap (it was not apparently loose) and after about the 4th start it went back to normal, no lights!
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Old 04-17-2011, 02:54 PM #19
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we have been having an issue with doing the 90L recall, zero point cali is needed everytime sometimes twice. weird we know we sent a product report in, this could be the problem too. at least you got a free cat out of it lol.
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Old 05-10-2011, 12:48 PM #20
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CEL, VSC Trac, Trac Off - start up shaking

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Originally Posted by Sgt. Boz View Post
I have a good one here.
I have an 04 SR5 V6 w/ 134,000 miles on it. I started it up one day and it shook pretty good for about 30 seconds and then went away. the CEL and VSC/TRAC off lights came on and stayed on. I drove it to work, everything was fine. Started it after 8 hrs. same thing shake for 30 sec. then runs fine. Pulled codes and had a #6 cylinder miss-fire. Changed Plugs. She ran fine for 2 days and then the same thing started. pulled code again , same thing. Swapped #6 coil pack with #4. ran for 2 days problem returned. pulled code #4 miss-fire!!!! yaa problem solved!! not quite. Put #4 pack back on #4 and changed #6 coil pack with new. Ran fine last night. Started it up this morning engine shake again for 30 seconds and CEL blinked for a couple of seconds and then went out, engine drove fine. What the heck??? Same exact problem. I will pull code again once it stays on. What would cause the eninge to shake (like a cylinder isn't firing) for 30 seconds (give or take a couple) and then run fine. No noticable loss of power. gas cap tight, just passed emmisions. I am lost on this one. ANY help would be greatly appreciated. Oh, one more thing. when the CEL was cleared why didn't the VSC/TRAC off light go out? Those are the only light that won't go out. Then come on as soon as the vehicle moves. It stays out for as long as the engine is running and you haven't moved when you first start it up. PLEASE HELP!!!

Sgt Boz & Grosse14 what were you able to find out about your problems. I'm having the same issue now with an 04 SR5 V6 w/ 125K miles. Engine shakes for a while when i start it up, and sometimes I notice after driving a while rpms go down to 500 on idle. CEL reader reported cylinder 6 misfire and I replaced all six plugs, it was good for a while but now it's happening again. I'm thinking it could be a bad distributor cap. Your input would help a lot.
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Old 09-30-2011, 11:12 AM #21
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Hello everyone,
I've had the check engine light, VSC, and TRAC light on for about a month now on my 03 4Runner with about 19,000 miles (It's my weekend vehicle and I take the train commuting to work ). Went to Autozone to get the codes read but they told me they don't offer that service anymore. Vehicle runs great and the gas mileage hasn't changed. I've tried the usual tightening the gas cap and resetting the computer. But, after driving for about 15 minutes, they all light up again. I did just read in some other forum that low brake fluid can also cause the lights to light up. I will have to check up on that once I get home from work. I'm really hoping there is something else I can do before I really have to take it to a mechanic.
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Old 11-10-2011, 01:04 PM #22
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Vsc , check engine, anti lock , low tire pressure

I had low tire light come on my 2005 4runner sport v8 4wheel drive. I did not take care of this right away, and it set off lights "vsc, anti lock brakes" . I solved it after proper air in all 5 tires including spare. The lights were still on, so disconnected battery waited 15 minutes, hooked battery up and all lights shut off.
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Old 11-13-2011, 09:26 PM #23
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Quote:
Originally Posted by Flo4Run View Post
Sgt Boz & Grosse14 what were you able to find out about your problems. I'm having the same issue now with an 04 SR5 V6 w/ 125K miles. Engine shakes for a while when i start it up, and sometimes I notice after driving a while rpms go down to 500 on idle. CEL reader reported cylinder 6 misfire and I replaced all six plugs, it was good for a while but now it's happening again. I'm thinking it could be a bad distributor cap. Your input would help a lot.
I have the same exact issue with my 2004 4Runner Limited v6 4x4. Except now my heater does not work. Has anyone resolved their issue yet? Any help would be greatly appreciated.
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Old 11-13-2011, 09:26 PM #24
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check engine

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Originally Posted by Flo4Run View Post
Sgt Boz & Grosse14 what were you able to find out about your problems. I'm having the same issue now with an 04 SR5 V6 w/ 125K miles. Engine shakes for a while when i start it up, and sometimes I notice after driving a while rpms go down to 500 on idle. CEL reader reported cylinder 6 misfire and I replaced all six plugs, it was good for a while but now it's happening again. I'm thinking it could be a bad distributor cap. Your input would help a lot.
I have the same exact issue with my 2004 4Runner Limited v6 4x4. Except now my heater does not work. Has anyone resolved their issue yet? Any help would be greatly appreciated.
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Old 12-02-2011, 12:12 PM #25
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engine shake

had same problem except when it was done shaking it sounded like water rushing into the dash for like 5 seconds. turns out i had a head gasket and water pump gone bad , that week was a pain in the ass
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Old 02-01-2012, 04:57 PM #26
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VSC Light and CEL fix

I had the same issues CEL and VSC light came on at the same time.
Took it to Autozone and code came in as exhaust/catalytic convertor code.

Autozone guy suggested possible hole in exhaust system. My mechanic wanted me to spend $900 to replace cc. When we put the car on the lift it was hard to see but the gasket just before the cc was leaking. We changed the gaskets on both sides...CEL cleared VSC no longer illuminated.
total cost $100
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Old 03-04-2012, 09:33 AM #27
AurelioDiez AurelioDiez is offline
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Smile VSC off, TRAC off and check engine light on!

Had a similar problem with my 2005 4 Runner. I fixed it by cleaning the battery poles from a greenish powder.
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Old 04-11-2012, 10:01 AM #28
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Smile 03 4runner CEL VSC TRAC OFF

Actron code reader said it was passenger side 0xygen sensor downstream(the one after the catalytic converter). I replaced it with OEM Denso and cleared the code. Two days later CEL and VSC TRAC OFF lights came back on. Checked with reader again and code came back as the same Oxygen sensor downstream on passenger side even though it was already replaced with new one. Any ideas anyone?
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Old 04-13-2012, 11:37 AM #29
4run4BuxandTako 4run4BuxandTako is offline
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That sounds like my problem...We have replaced all O2 sensors with factory parts now, at first we used after market (which I have heard that can trick the Codes to pull). Also new battery, MAF sensor...and my VSC Trac, VSC Off, and check engine lights are still on!! They are haunting me. I have noticed the exhaust has a bit of an eggy smell to it occasionally...gaskets sound like my next step ?
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Old 12-17-2012, 05:00 PM #30
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VCS off / track and check engine light on

Hey this just happened to me also. So; as many rational people do I scanned through my owner’s manual and as usual it suggested that "I SHOULD DRIVE STRAIGHT TO A DEALER!" "F that" so I googled my issue and found this sight after reading through a dozen of post ranging from bad cat's to lose gas caps I ventured out to my 2002 SR5 LTD 4WD and started the rounds as follows. I tightened my gas cap ...nope. Then I checked my abs fuse box...nope. I checked fluid levels all good...nope. Then I said what the Hey and opened up the old air cleaner box .....Guess what folks some damn rodent had stored at least 100 acorns in there via my air induction port on the passenger side wheel well...lol. Following a quick WAP VAC maneuver the lights went out. So, add this one to the possible fixes regarding warning lights.

Last edited by WJB75; 12-17-2012 at 05:03 PM.
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