Question about 2003 Toyota Highlander

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My check engine light and VSC light came on after a round trip total of 300 mile drive Autozone checked codes it was a P0135 and I had my brakes and rotors replaced 2 weeks prior.

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Your O2 sensor heater circuit is not working. Can be caused by wiring, including connector, or sensor. Check connector. If good, it's probably the sensor. You can troubleshoot the sensor if you have an ohmmeter. If you want to do this, please get back to me and I'll send instructions.
The sensor is screwed into the exhaust manifold on the front of the engine.

Posted on Oct 11, 2010

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2007. Why did check engine light and VSC message come on?


Your VSC system doesn't have anything to do with your gas cap, unfortunately. You're going to either need an OBD2 Scanner to read the messages for your check engine light or take it to a mechanic/dealership to read the code and reset that light. You can also go to Autozone if memory serves and borrow a scanner to see the codes. You can pick up scanners from amazon for 10-50 USD, or about 40 USD from Autozone. Your VSC system not working means that you're not going to have optimal stability while driving until you can get the system operational again. Note that since it's Toyota Proprietary, you will not be able to read the VSC codes with the scanner, just the standard check engine codes. If your vehicle's braking system still seems to work, it could be a sensor malfunction, but I would recommend you take your vehicle to a Toyota dealership (unfortunately) to see if they can find the fault. Don't let them BS you either... http://www.greenhybrid.com/forums/f49/check-vsc-system-warning-dealer-says-normal-display-20826/index2.html

Jul 31, 2015 | Toyota Camry Cars & Trucks

1 Answer

Car sat in parking lot for 3 days, with a lot of rain. Upon start up Check Engine & VSC began to flash. Car ran normally for 2 miles. Pulled over shut down car, waited 10 seconds re-started engine...


It likely had water on the ignition system. The check engine light will flash for misfire. The VSC light is on just because the check engine light is on. You likely have it dried out now and its fine. You just need to clear the codes. Autozone will do this for free.

May 30, 2011 | 2008 Lexus Rx 350

1 Answer

My toyota 4runner 2003 model, shows engine check light and vsc track light on . But mostly , my truck vibrates big time each time the brake is applied. Please what do I do? I need help. Thanks,...


This sounds like two problems, the virbrating brakes is due to plusating brakes and this is caused by out of round brake rotors, you will need to have the rotors machined down ture again and this will take care of the vibration when braking. the engine and vsc lights are on because the trucks computer picked up a problem. when everthe check engine light comes on the computer shuts down the vsc because if the engine is not running good then the vsc can not operate correctly and so the computer turns of that system and turns on the light and the engine light is turned on due to a problem. there are so many reasone the engine light could be on for, you will need to have the computer scanned for codes. when the computer detects a problem it stores a code that will tell you which part or sensor is failing or failed. this could be as simple as a loose gas cap or may be a sensor but without scanning its hard to know whats wrong. there are many autopart stores like autozone for example that will scan the codes and give you a print out of the codes. for example there may be a code like po301 cylinder 1 misfire detected, this would mean cylinder 1 is mis firing and then with a little checking you can find out why this is. if you could get the codes and let me know them i would be able to help you further, good luck and have a good day.

Mar 05, 2011 | 2003 Toyota 4Runner

2 Answers

The VSC and Check engine light turn on for lexus 1999 the cood is p0500


Toyotas and Lexus cars have some unique feaures. If your fuel cap is loose or the O2 sensors on the exhaust are faulty this results in an emission problem and the engine computer unit (ECU) engages the check engine light and disables the VSC (the VSC light comes on to warn you that it has been disabled). However you have p0500 code which says the car has no speed sensor signal. The seed sensor is located on the side of the final drive from the transmission and its job is to measure the speed of rotation of the output shaft. The ECU will compare the signals from this shaft along with the speed sensors in the wheel hubs. If there is a difference between these signals the VSC is engaged to apply braking effort to which ever wheel is slipping (running faster) than the other or that the transmission speed sensor would warrant.
So you either have an emission fault has fed back to the VSC and speed sensor missing (p0500) condition, or you have a faulty sped sensor which has tripped the VSC light and in turn the CEL.
Check your fuel filler cap is on tight, turn radio off and disconnect the negative lead to the battery for 5 minutes (this should clear the ECU memory of the code error). If p0500 error and CEL and VSC lights come back on then check the electrical connection to the speed sensor. Ensure it is clean and making a good contact, check the wiring for continuity. If everything else looks good consider changing the speed sensor.

Sep 14, 2010 | 1999 Lexus ES 300

2 Answers

Trac off, trac vsc and check engine engine lights


Battery was diconnected for 1 minute and then reconnected. All lights are off.

Mar 24, 2010 | 2002 Toyota 4Runner

1 Answer

Just got car service for 75,000 miles also had new


Sounds to me like someone has perhaps knocked the ABS sensor while working on the brakes. The ECU in these cars interlinks various stability and braking components. Go back to the service center and ask them to put a code reader on the car and get a read out. It may only require that they reset the fault codes, but do not delay. On some Lexus vehicles these lights will also come on when the battery has been disconnected and there will be a reset for the programs, but the TRAC off light has never come on on my 2001 when doing brakes or battery swap.
nice find an 02 with 75,000. My 2001 is over 160

Nov 18, 2009 | 2002 Lexus RX 300

1 Answer

My Toyota, 2001 4 Runner, has just had (within the last 45 miles driven) the VSC OFF light the VSC TRACTION light and the Check Engine light come on. What do I need to do and how did this...


any time your check engine light comes on it will turn off the vsc. you need to have your codes pulled for your check engine light and repair that issue then the vsc off light will go out as well. you can stop at your local parts store"autozone" and they will be able to pull your code once you have your code i can assist you in the proper repair

Jul 28, 2009 | Toyota 4Runner Cars & Trucks

1 Answer

Check engin light on and VSC on to Checked engin cod P0135


you should take your car to a shop where they will use and ob2 connector which will give you specifics on why the code has come up...you can also buy an ob2 connector at a store and try it yourself but it would probably be cheaper to take it to a shop

May 15, 2009 | 2003 Toyota Highlander

2 Answers

VSC/ Check Engine Light


My 2000 Lexus GS 400 just had the VSC/VSC off light and the check engine light come on. I would have to push the accelarator peddle all the way down to get it to go. Took it to the Toyota dealer and the code pulled up as the Throttle Position Sensor was out. Purchased one and having it put in. Will update if this fixes the problem.

Feb 23, 2009 | 2003 Lexus Gs 300

2 Answers

2004 toyota sienna engine and vsc light


well the check engine light on can mean many different issues its just a symbol telling you that your ecu (engine computer) has found an issue with your vehicle it is not a specific indicator of whats going on unless you get the codes pulled from your computer any autozone will pull the codes for free and some shops will also just call around they will not diagnose prob for free though it could be anything vacume leaks - o2 sensor bad ext....as far as your vsc being on most of the time when your check engine light comes on the vsc will light up also does not mean there is an issue with your vsc system....i work as a mechanic for a toyota dealer and see his all the time and check to make sure your gas cap is tight will set check eng and i see it all the time when custs forget to tighhten gas cap if its loose you can get the codes erased hope this helps!!!!

Jan 04, 2009 | 2004 Toyota Sienna

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