Question about 2004 Toyota Sienna

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2004 toyota sienna engine and vsc light

2004 toyota sienna engine and vsc

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  • Peter Castaldo
    Peter Castaldo May 11, 2010

    The VSC light will always come on with the check engine light, because VSC is telling you the ECM has a problem. You need to get the DTC code and I can help further.

  • Peter Antonelli May 11, 2010

    You have to find out what the engine light code is. the v.s.c. light will go out when you repair the check engine light.

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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!!!!

Posted on May 10, 2009

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  • 271 Answers

Get a diagnosis for ecm from service or dealer, if you have many miles it might be the canister which is located under the car about the rear seat area under a shield. You can drive with bad canister but cannot pass an EPA test if your state has one. Very expensive but get one from a junk yard cheap and replace it, might work and cost is minimal, new ones are $300 on-line.

Posted on Nov 11, 2014

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SOURCE: 2004 Sienna - VSC and TRAC OFF Lights are On

I have both lights on in my 2004 van also I have the engine light on. i took it to the dealer and they found the Yaw Rate Sensor (Vsc & TRAC) bad. The part is about$ 405 and is under the drivers seat. The other problems is the Catalyst System (engine light) about $1000 for parts.I have about 147,000 miles on my '04 and the problems started about 130,000.

Posted on Apr 12, 2010

dttech
  • 4803 Answers

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.

Posted on Jan 25, 2011

  • 1861 Answers

SOURCE: VSC and engine light on

The Trac light comes on automatically, in conjuction with the Check Engine Light. You need your vehicle scanned for DTC codes.

Posted on Sep 08, 2008

BD288
  • 4 Answers

SOURCE: I just changed my battery on my 04 Toyota Sienna

remove the negative terminal on the bat for 5 min and then replace it

Posted on Jun 27, 2009

  • 242 Answers

SOURCE: the vsc and no trac

That is a common problem, if somebody does an alignment, or rotation on old tires or you hit a sidewalk and damage a rim, anything that can alter the steering angles of the vehicle can trigger a red flag and set a code for steering angle sensor calibration, only dealers and shops with the right equipment can perform this inexpensive procedure

Posted on Jan 17, 2011

  • 21 Answers

SOURCE: 2004 Toyota 4Runner, Regarding The VSC TRAC and VSC OFF lights

Check your switches for the VSC, some get bumped on (due to their location) and some get stuck in the "on"position.

Posted on Aug 04, 2009

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2004 Sienna - VSC and TRAC OFF Lights are On


I have both lights on in my 2004 van also I have the engine light on. i took it to the dealer and they found the Yaw Rate Sensor (Vsc & TRAC) bad. The part is about$ 405 and is under the drivers seat. The other problems is the Catalyst System (engine light) about $1000 for parts.I have about 147,000 miles on my '04 and the problems started about 130,000.

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I have a 2004 Toyota Sienna. Had the oil and filter changed yesterday and brought the car home. When I started the car this morning, the check engiine light, VSC and Trac Control light came on. I have...


I'd get the car back to who changed the oil and have them run the check engine code. If they are interested in customer service, I'd think they'd do that for free.

With the code, can better determine the risk. While I'd not consider a VSC/Trac Control critical (we ahve all driven cars for years with out it), the addition of the check engine light could mean bigger problems. I'd also be more concerned if it was an ABS brake fault or brake light that was lit.

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The Trac light comes on automatically, in conjuction with the Check Engine Light. You need your vehicle scanned for DTC codes.

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